JP5063187B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device using a light emitting diode (hereinafter referred to as LED) as a light source.

  Blue LED development, which was said to be impossible during the 20th century, is a single-chip white LED composed of a blue LED and a phosphor that emits yellow light when excited by blue light, and more than two colors. The commercialization of multi-chip type white LED that utilizes the mixed light of the LED of this type was realized.

  Recently, the use of LEDs as lighting devices has been rapidly increasing due to the characteristics of LEDs that are small and power-saving. For example, the efficiency indicated by the luminous flux per 1W of power consumption (the amount of light from the light source) reaches 30 lm / W at maximum for white LEDs, and exhibits excellent efficiency exceeding 15 lm / W for incandescent bulbs and 20 lm / W for halogen bulbs. To do.

  As described above, various technologies have been proposed as LEDs are used in lighting devices. For example, Patent Document 1 proposes a light bulb-type light emitting diode lamp that is arranged so that a heat radiating portion is in contact with an LED arrangement surface on which a plurality of LEDs are arranged in consideration of a heat radiation problem associated with the use of a plurality of LEDs.

  Moreover, in patent document 2, it is equipped with LED which is a light source, and the metal body which has the support part which supports the board | substrate with which this LED was arrange | positioned, and the mounting cone-shaped reflection part which reflects the light from LED, LED Has proposed a lighting device that transfers heat generated by lighting from a substrate to a metal body, and further transfers heat to the lighting device body to dissipate heat.

  In conventional lamps such as incandescent bulbs and fluorescent lamps, the globe is filled with an inert gas or mercury gas according to the respective functions. Therefore, the glove, filament or base cannot be configured to be removable, and the glove or filament alone cannot be replaced when the glove breaks or the filament breaks. It was necessary to replace the entire incandescent bulb and fluorescent lamp.

On the other hand, when the LED is used as a light source for illumination as described above, it is not necessary to fill the inside of the glove with gas. Whether or not the light source is burned out, replacing the entire bulb is a waste of resources.
JP 2005-286267 A JP 2005-251637 A

  However, neither the light-emitting diode lamp of Patent Document 1 nor the illumination device of Patent Document 2 has a configuration that does not consider removal of a globe, a light source, or a heat dissipation unit, and any of the globe, the light source, or the heat dissipation unit is damaged. If so, it was still necessary to replace the entire light emitting diode lamp or lighting device.

  In addition, the light emitting diode lamp of Patent Document 1 and the lighting device of Patent Document 2 employ air-cooled heat radiation using outside air for heat radiation, and cope with the problem of heat radiation associated with the use of a plurality of LEDs. There is also a problem that sufficient consideration has not been given to securing the contact area with the outside air, which is important in the heat radiation of the type.

  This invention is made | formed in view of such a situation, The place made into the objective is to comprise a light source part, a thermal radiation part, a cover part, or a circuit part so that attachment or detachment is possible in the illuminating device which uses LED as a light source. Accordingly, an object of the present invention is to provide an illumination device that can perform maintenance such as replacement or cleaning for each light source, heat dissipation, cover, or circuit unit.

The lighting device according to the present invention includes a base having an LED on one side, a light source part having a columnar holding part provided on the other side of the base, and an outer peripheral surface of the holding part. a heat radiating portion of the tubular to radiate, covers the LED, a lighting device and a covering portion for transmitting light from the LED, the covering portion and the heat radiating portion is detachable from the light source unit It is possible to install .

  In the present invention, the light source part, the heat radiating part, or the cover part of the lighting device is detachably coupled, and if necessary, maintenance such as replacement or cleaning is performed by removing a necessary part.

  An illuminating device according to the present invention is an illuminating device including a light source unit having an LED and a heat radiating unit that radiates heat of the LED of the light source unit, wherein the heat radiating unit is detachably attached to the light source unit. It is characterized by being.

  In the present invention, the heat radiating portion is detachably attached to the light source portion of the lighting device, and if necessary, maintenance such as replacement or cleaning is performed by removing a necessary portion.

  An illuminating device according to the present invention is an illuminating device comprising: a light source unit having an LED; a heat radiating unit that radiates heat from the light source unit; and a cover unit that covers the light source unit and transmits light from the light source unit. The light source part is detachably attached to the heat radiating part or the cover part, or the heat radiating part is detachably attached to the cover part.

  In the present invention, the light source part of the lighting device is detachably attached to the heat radiating part or the cover part, or the heat radiating part is detachably attached to the cover part. Remove and replace, or perform maintenance such as cleaning.

The illumination device according to the present invention includes a circuit unit including a circuit for driving the LED, and the circuit unit is detachably attached to an end of the holding unit .

  In the present invention, the circuit unit is detachably attached to the light source unit or the heat radiating unit configured to be detachable, and a necessary part is removed and maintenance such as replacement or cleaning is performed as necessary. .

  The illuminating device according to the present invention is characterized in that the heat dissipating part includes corrugated heat dissipating fins.

  In the present invention, since the heat radiating portion includes corrugated heat radiating fins, the specific surface area of the heat radiating fins required for heat radiation is sufficiently ensured. The heat generated from the light source unit is transmitted to the heat radiating fins and released to the outside air through the surface of the heat radiating fins.

  An illuminating device according to the present invention includes a base connected to a power source, the heat radiating portion is disposed between the base and the light source, and the corrugated heat radiating fin includes the light source, It is characterized by a radial shape with the parallel arrangement direction of the heat dissipating part and the base part as an axis.

  In the present invention, the corrugated shape is arranged such that the heat radiating portion is disposed between the light source portion and the base portion, and the light source portion, the heat radiating portion, and the base portion are arranged in the radial direction. Provide heat dissipation fins. When the temperature of the light source unit rises due to the light emission of the light source unit, the corrugated radiating fins guide the flow of outside air from the high temperature light source unit to the low temperature base unit, improving the heat dissipation effect by the outside air Let

  The illumination device according to the present invention is characterized in that the heat dissipating part includes a plurality of mesh heat dissipating plates.

  In this invention, since the said heat radiating part is provided with a some mesh-shaped heat sink, the specific surface area of a heat sink required for heat radiation is increased greatly. Heat generated from the light source unit is transmitted to the heat radiating plate and released to the outside air flowing outside the heat radiating plate and between the meshes.

  The illuminating device according to the present invention is characterized in that the heat dissipating part includes a porous heat dissipating block.

  In the present invention, the heat radiating portion includes a porous heat radiating block. Since there are innumerable open pores and closed pores inside the porous heat dissipation block, the specific surface area of the heat dissipation block required for heat dissipation is greatly increased. Heat generated from the light source is transmitted to the heat radiating block, and is released to the surface of the heat radiating block and the outside air flowing through the open and closed pores inside.

The illuminating device according to the present invention is characterized in that the heat dissipating part includes a frustoconical heat dissipating shade.
Moreover, the illumination device according to the present invention is characterized in that the circuit section is divided into a part on the light source part side and a part on the base part side, and each of them is detachable.

  In the present invention, since the heat radiating portion includes a truncated cone-shaped heat radiating shade, the specific surface area of the heat radiating portion is greatly increased. Heat generated from the light source part is transmitted to the heat radiation shade and released into the outside air flowing outside and inside the heat radiation shade. In addition, the irradiation direction can be controlled by the truncated cone shape.

  According to the present invention, in the illumination device using an LED as a light source, the light source unit, the heat radiating unit, the cover unit, or the circuit unit are configured to be detachable. A necessary part can be removed for each part or circuit part, and maintenance such as replacement or cleaning can be performed.

  According to the present invention, the heat radiating part can sufficiently secure a heat radiating area in contact with the outside air for releasing the heat generated from the light source part into the outside air, and the heat radiating ability can be improved.

  According to the present invention, the heat dissipating part is disposed between the light source part and the base part, and the corrugated heat dissipating fins are provided radially about the parallel arrangement direction of the light source part, the heat dissipating part and the base part. Therefore, the flow of outside air from the high temperature light source unit to the low temperature base unit is induced, and the heat dissipation effect is improved.

(Embodiment 1)
Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic vertical sectional view showing a main part of the configuration of the lighting apparatus according to the first embodiment, and FIG. 2 is an exploded perspective view of the main part. FIG. 3 is an exploded perspective view showing a main part of the structure of the heat dissipating part 2 of the lighting apparatus according to Embodiment 1 of the present invention.

  The lighting device according to Embodiment 1 has a light bulb shape, for example, a light source unit 1 having a light source including a plurality of white LEDs 11, 11, 11,..., A dome-shaped cover unit 4 covering the light source unit 1, and a light source unit A heat radiating part 2 for radiating heat generated from 1, a circuit part 7 comprising a drive circuit part 3 for driving the light source and a circuit housing part 6 for housing the drive circuit part 3, and the drive circuit part 3 And a base part 5 connected to each other.

  The light source unit 1 includes an LED module 13 including a plurality of white LEDs 11, 11, 11,... And a disk-shaped LED substrate 12 having a plurality of white LEDs 11, 11, 11,. I have. The LED board 12 is mounted on a disk-like base 14 having a larger diameter than the LED board 12 by sandwiching an insulating material (not shown) by screwing or the like, so that the other surface of the LED board 12 and the base 14 are fixed. One surface on the cover 4 side is in thermal contact. The other surface of the base 14 is fixed to the side surface of the light source unit 1 of the columnar holding column 17 for holding the LED module 13, and the end 17 b side end 17 b of the holding column 17 is connected to the circuit housing unit 6. It is detachably screwed and held. On the edge of the base 14, a male screw part 15 for the cover part 4 to be detachably screwed is provided. Further, a cylindrical first pin plug 16 connected to the LED substrate 12 is projected on the side surface of the base portion 5 of the holding column 17 so that the drive circuit portion 3 and the light source portion 1 can be electrically connected and separated. ing. A male screw 17 c is provided on the outer peripheral surface of the intermediate portion 17 a of the holding column 17, and the heat radiating portion 2 is attached to and detached from the holding column 17 by constituting a second screwing mechanism with an inner holding cylinder 22 of the heat radiating portion 2 described later. It is screwed together. On the other hand, the base part 5 side end 17b of the holding column 17 has a diameter smaller than that of the intermediate part 17a, and a male screw 17d is provided on the outer peripheral surface of the base part 5 side end 17b. By constituting a third screwing mechanism with the hole 62, the holding column 17 is screwed to the circuit housing portion 6 in a detachable manner. Further, when the circuit housing portion 6 is detached from the holding pillar 17, the circuit portion 7 is detached from the retaining pillar 17. The base 14 and the holding column 17 are made of aluminum and are integrally formed. Moreover, the LED module 13, the base | substrate 14, and the holding pillar 17 are provided concentrically.

  Inside the edge of the cover 4 that covers and protects the LED module 13 and the base 14, a female screw part 41 for screwing with the male screw part 15 of the base 14 is provided. The first screw mechanism formed by the male screw portion 15 and the female screw portion 41 of the cover 4 is detachably screwed. The cover 4 is made of milky white acrylic.

  The heat dissipating part 2 includes a cylindrical inner holding tube 22 provided inside with a female screw 221 for screwing with the holding column 17, a corrugated heat dissipating fin 21 provided on the outer peripheral surface of the inner holding tube 22, An outer holding cylinder 23 that holds the heat radiation fin 21 from the outside is provided. The corrugated radiating fins 21 are annular and radiate in the axial direction of the inner holding cylinder 22. Therefore, it is possible to guide the flow of outside air from the high temperature light source unit 1 to the low temperature base unit 5, that is, in the axial direction of the inner holding cylinder 22. The inner holding cylinder 22, the radiating fin 21 and the outer holding cylinder 23 are all made of aluminum and are provided concentrically. The heat generated from the LED module 13 is conducted in the order of the base 14, the holding column 17, the inner holding cylinder 22, and the radiation fins 21, and is released to the outside air by the radiation fins 21 through the surface of the radiation fins 21. The heat dissipating part 2 is provided by the second screwing mechanism constituted by the female screw 221 provided inside the inner holding cylinder 22 of the heat dissipating part 2 and the male screw 17c provided on the outer peripheral surface of the intermediate part 17a of the holding column 17. Is fixed to the holding column 17 in a detachable manner.

  The circuit housing portion 6 connected to one end side of the base portion 5 has a substantially cylindrical shape in which the end portion on the base portion 5 side is reduced in diameter toward the tip, and various types for driving the LED module 13. A drive circuit unit 3 including a drive circuit 31 made of circuit components and a circuit board 32 to which the drive circuit 31 is soldered on one surface is accommodated. The circuit housing portion 6 has a screw hole (internal thread) 62 into which the male screw 17d of the end portion 17b of the base portion 5 of the holding column 17 is screwed at the center of the side surface 63 of the light source portion 1, and the end portion on the base portion 5 side. The circuit housing portion 6 is detachably attached to the holding column 17 by a third screwing mechanism including the male screw 17d of the portion 17b and the screw hole 62. The circuit housing portion 6 is divided into a cylindrical portion 6A on the light source portion 1 side and a reduced diameter portion 6B on the base portion 5 side. A female screw 61A is provided inside the edge of the cylindrical portion 6A, and a male screw 61B that is screwed into the female screw 61A is provided outside the reduced diameter portion 6B. The female screw 61A and the male screw 61B constitute a fourth screwing mechanism. ing. The cylindrical portion 6A and the reduced diameter portion 6B are detachably screwed by the fourth screwing mechanism.

  On the other hand, a resilient latching member 64 protrudes from the inside of the light source unit 1 side surface 63 of the circuit housing unit 6, and the edge of the circuit board 32 of the drive circuit unit 3 is attached and detached by the latching member 64. It is hooked as possible. The other surface of the circuit board 32 is opposed to the side surface of the base portion 5 of the holding column 17 provided with the first pin plug 16, and mechanically and electrically connected in accordance with the shape of the first pin plug 16. One receptacle (not shown) is provided. In addition to the drive circuit 31, a second receptacle (not shown) is provided on one surface of the circuit board 32, and is mechanically or electrically separated from or connected to a second pin plug 51 of the base 5 described later. Is possible.

  The base portion 5 having a substantially cylindrical shape is threaded so that the outer peripheral surface is screwed with the light bulb socket, and has a bottom surface on the other end side. The outer peripheral surface of the cap 5 serves as a one-pole terminal 52, and an other-electrode terminal 53 projects from the bottom surface so as to be insulated from the one-pole terminal 52 of the outer peripheral surface. The other electrode terminal 53 and the one electrode terminal 52 are connected to a second pin plug 51 provided along the center of the base portion 5, and the second pin plug 51 is driven through the second receptacle (not shown). Connected to or separated from the circuit unit 3.

  FIG. 4 is a main circuit diagram of the main part of the lighting apparatus according to Embodiment 1 of the present invention. One end of the drive circuit unit 3 is electrically connected to the LED module 13 and the other end is electrically connected to the base unit 5 via a current fuse 5a. The drive circuit unit 3 and the LED module 13 are energized by electrical connection of the first pin plug 16 and a first receptacle 3g described later. The drive circuit unit 3 and the base unit 5 are energized by electrical connection of the second pin plug 51 and a second receptacle 3h described later. When an overcurrent occurs, the current fuse 5a between the drive circuit unit 3 and the base unit 5 is quickly blown and cuts off the circuit so that no smoke or fire occurs.

  The drive circuit unit 3 includes a thermal fuse (or a protector that repeatedly cuts off and joins) 3a that blows and shuts off the power when heat of a certain temperature is applied, a varistor 3b that absorbs overvoltage, and a commercial AC voltage. The LED is driven by a diode bridge 3c for full-wave rectification, a smoothing capacitor (electrolytic capacitor) 3d for converting a current (pulsating flow) from the diode bridge 3c into a flatter DC, and a smoothed high DC voltage. DC-DC converter circuit 3e that can be directly connected to a commercial AC power source composed of a power supply module (for example, HIC (Hybrid Integrated Circuit)) for stepping down to a direct current low voltage (for example, DC12V) for detecting the voltage of LED module 13 A capacitor (ceramic capacitor) 3f, a voltage detection circuit comprising a direct circuit of a resistor R2, and an LED module. A first receptacle 3g that is mechanically and electrically connected to the first pin plug 16 of the handle 13, a second receptacle 3h that is mechanically and electrically connected to the second pin plug 51 of the base part 5, and a voltage stabilizing resistor. R1 and an output current setting resistor R2 are provided.

  As described above, the cover 4, the light source unit 1, the heat radiating unit 2, and the circuit unit 7 are detachably attached by the first screwing mechanism, the second screwing mechanism, and the third screwing mechanism, respectively. Therefore, only necessary portions can be removed, replaced, maintained, etc., as necessary. For example, when the cover part 4 is cracked, the cover part 4 is rotated clockwise to release the screwing of the first screwing mechanism to separate the cover part 4 from the base 14, so that a new cover part 4 is formed. It is possible to replace it. Further, when the light source unit 1 is disconnected, or when dust accumulates on the radiating fins 21 of the radiating unit 2, the cover 4 is removed as described above, and the holding column 17 is rotated clockwise. After the screwing of the third screwing mechanism is released and the light source unit 1 and the heat radiating unit 2 are separated from the circuit unit 7, the heat radiation unit 2 is further rotated in the clockwise direction, thereby screwing the second screwing mechanism. Is released, the heat radiating part 2 is separated from the holding part 17 of the light source part 1, and the light source part 1 can be replaced and the radiating fins 21 can be cleaned.

  In addition, when a disconnection occurs in the drive circuit unit 3 housed in the circuit housing unit 6 of the circuit unit 7, the reduced diameter portion 6B of the circuit housing unit 6 is rotated clockwise to perform the fourth screwing. It is also possible to separate the drive circuit unit 3 from the latch member 64 and replace only the drive circuit unit 3 after releasing the screwing of the mechanism and removing the reduced diameter portion 6B and the cap portion 5. Therefore, since only the drive circuit part 3 can be replaced from the base part 5 side without removing the entire circuit part 7 from the holding column 17, it is simple and the circuit housing part 6 can be used as it is.

  In the above-described example, the case where each screwing mechanism is released by rotating clockwise is described as an example. However, the present invention is not limited to this, and when the screwing mechanism is rotated counterclockwise, You may comprise so that screwing may be cancelled | released.

  In the above-described example, the cover 4 is provided in the first screwing mechanism, the holding part 17 is provided in the second screwing mechanism, the heat dissipating part 2 is provided in the third screwing mechanism, and the fourth screwing mechanism. In the above description, an example has been described in which each screwing mechanism is released by rotating the reduced diameter portion 6B in the same direction, but the present invention is not limited thereto. For example, the rotational directions for releasing at least one screwing mechanism and other screwing mechanisms may be different. In this case, it is possible to prevent the release of another screwing mechanism that is not intended to be released.

  The lighting device according to Embodiment 1 of the present invention is not limited to the above description. For example, it is possible to use one lighting device as an individual lighting device with different power consumption. That is, when the 20 W type, 40 W type or 60 W type light source unit 1 is attached by providing the DC-DC converter and the drive circuit unit 3 so as to be compatible with the 60 W type, the 20 W type, It can be used as a 40W type and 60W type lighting device.

  In Embodiment 1 of the present invention, the case where the drive circuit unit 3 and the base unit 5 are energized by the second pin plug and the second receptacle has been described as an example, but the present invention is not limited to this. For example, you may energize with a lead wire. In this case, the drive circuit unit 3 and the base unit 5 are difficult to attach and detach, but the relationship between the circuit unit 7 and the light source unit 1, the heat radiating unit 2, and the cover unit 4 does not change, and the configuration is detachable from each other Therefore, there is no problem.

  In the first embodiment of the present invention, the case where the cover 4 is milky white has been described as an example, but the present invention is not limited to this. For example, by coloring the cover 4, it is possible to produce various colors of light that cannot be expressed only from the white LEDs 11, 11, 11,.

  In Embodiment 1 of the present invention, the heat radiation portion 2 is configured by providing the corrugated heat radiation fin 21 between the inner holding cylinder 22 and the outer holding cylinder 23, but is not limited thereto. For example, the same effect can be obtained by providing a plurality of plate-like fins radially between the inner holding cylinder 22 and the outer holding cylinder 23.

  In Embodiment 1 of the present invention, the case where the heat radiating part 2 and the cover part 4 are detachably attached to the light source part 1 has been described as an example, but the present invention is not limited to this. For example, even if the heat dissipating part 2 and the cover part 4 are detachably mounted, the same effect can be obtained.

  In Embodiment 1 of the present invention, the heat dissipating part 2 is screwed to the outer peripheral surface of the intermediate part 17a of the holding column 17 of the light source unit 1 by the second screwing mechanism, and the holding column 17 is connected to the end of the base part 5 side. The case where the heat radiating unit 2 and the light source unit 1 are configured to be detachable by using the screwing mechanism by the portion 17b being screwed to the circuit housing unit 6 by the third screwing mechanism has been described as an example. However, the present invention is not limited to this, and the holding column 17 (light source unit 1) and the heat radiation unit 2 may be configured to be detachable. For example, an engagement hole may be provided in the holding column 17, and an engagement piece that engages with the engagement hole may be configured to be detachable by an engagement mechanism provided in the heat radiating unit 2. Conversely, an engagement hole may be provided in the heat radiating portion 2 and an engagement piece may be provided in the holding column 17. Moreover, although the heat radiating portion 2 has been described as including the outer holding cylinder 23, the heat dissipation section 2 may be configured not to include the outer holding cylinder 23, or may be configured to be detachable by the radiation fin 21 alone. In any case, the heat radiation efficiency can be maintained regardless of the installation direction of the lighting apparatus according to Embodiment 1 of the present invention.

(Embodiment 2)
FIG. 5 is an exploded perspective view showing a main part of the configuration of the lighting apparatus according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heat dissipating part 2 of the lighting device according to Embodiment 2 of the present invention is held by a cylindrical inner holding cylinder 22 provided with an internal thread 221 for screwing with the holding column 17 and an inner holding cylinder 22. And a heat radiating disk group 21A composed of a plurality of mesh-shaped heat radiating disks. The heat radiating disk is annular and has an outer diameter substantially equal to the diameter of the base 14. In addition, a through hole having an inner diameter through which the inner holding cylinder 22 can pass is provided at the center of the heat radiating disk so that the inner diameter of the inner holding cylinder 22 is substantially equal to the outer diameter of the inner holding cylinder 22. It is fixed to the surface. The plurality of heat radiating disks are arranged (stacked) in the axial direction along the outer peripheral surface of the inner holding cylinder 22 to form a heat radiating disk group 21A. Both the inner holding cylinder 22 and the heat radiating disk group 21A are made of aluminum.

  In the second embodiment, heat generated from the LED module 13 is conducted in the order of the base 14, the holding pillar 17, the inner holding cylinder 22, and the heat dissipation disk group 21 </ b> A. Thereafter, the heat generated from the LED module 13 is released by the outside of the heat dissipation disk group 21A and the outside air flowing between the meshes. Since the heat dissipation disk of the lighting device according to Embodiment 2 of the present invention is mesh-shaped, a sufficient heat dissipation area is ensured. The heat radiation part 2 is detachably screwed to the holding column 17 by the second screwing mechanism similar to that of the first embodiment. When removing the heat dissipating part 2, after removing the light source part 1 and the heat dissipating part 2 as described in the first embodiment, the heat dissipating part 2 is rotated in the clockwise direction so that the second screwing mechanism is screwed. Is released, and the heat radiating unit 2 is separated from the holding unit 17 of the light source unit 1. In addition, it is not restricted to such an example, You may comprise a screwing mechanism so that the rotation direction for cancellation | release of a screwing mechanism may be counterclockwise.

  In the second embodiment, the case where the heat radiating disk group 21A is made of aluminum has been described as an example. However, the present invention is not limited to this. For example, a material having high thermal conductivity such as copper may be used.

(Embodiment 3)
FIG. 6 is an exploded perspective view showing a main part of the configuration of the lighting apparatus according to Embodiment 3 of the present invention. The same parts as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The heat dissipating part 2 of the lighting device according to Embodiment 3 of the present invention is fixed to a cylindrical inner holding cylinder 22 provided with a female screw 221 for screwing with the holding column 17 and an inner holding cylinder 22. And a porous heat dissipation block 21B. The heat dissipating block 21B has a cylindrical shape having a diameter substantially equal to the diameter of the base 14, and is provided with a through hole having an inner diameter through which the inner holding cylinder 22 can penetrate, in the center. ing. With the inner holding cylinder 22 inserted in the through hole, the inner surface of the through hole of the heat dissipation block 21B is fixed to the outer peripheral surface of the inner holding cylinder 22. Both the inner holding cylinder 22 and the heat dissipation block 21B are made of aluminum.

  When a metal powder shaped body (metal powder) having the shape of a so-called deformed powder or spherical powder is heated at a temperature around the melting point of the metal, a liquid phase is formed only on the surface of the metal powder particles. A so-called necking is formed at the contact portion between the metal particles, but a void between the metal particles is formed at the remaining portion of the contact portion. Accordingly, the metal powder (sintered metal) subjected to the heat treatment is improved in durability (strength) by the necking and becomes porous including innumerable open pores or closed pores composed of the voids. The heat dissipating block 21B made of such porous sintered metal can secure a sufficient heat dissipating area.

  In the third embodiment, heat generated from the LED module 13 is conducted in the order of the base 14, the holding column 17, the inner holding cylinder 22, and the heat dissipation block 21B. Thereafter, the heat generated from the LED module 13 is released into the outside air through the outer surface of the heat dissipation block 21B and the inner surface of the internal open hole. The heat radiation part 2 is detachably screwed to the holding column 17 by the second screwing mechanism similar to that of the first embodiment. When removing the heat dissipating part 2, after removing the light source part 1 and the heat dissipating part 2 as described in the first embodiment, the heat dissipating part 2 is rotated in the clockwise direction, thereby screwing the second screw structure. The heat dissipation part 2 is separated from the holding part 17 of the light source part 1. In addition, it is not restricted to such an example, You may comprise a screwing mechanism so that the rotation direction for cancellation | release of a screwing mechanism may be counterclockwise.

  In the third embodiment, the case where the inner holding cylinder 22 and the heat dissipation block 21B are made of aluminum has been described as an example. However, the present invention is not limited to this. For example, a metal or ceramic having good heat dissipation such as bronze or stainless steel A material that can be sintered may be used.

(Embodiment 4)
FIG. 7 is a main part plan view of the illumination device according to Embodiment 4 of the present invention as viewed from the cover part 4 side, and FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. The same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The illumination device according to Embodiment 4 of the present invention includes a cylindrical circuit housing portion 6 having a screw hole (internal thread) 68 for screwing the holding column 17 of the light source portion 1 inside, the drive circuit portion 3, and the like. The holding portion 17 is provided with a male screw 171 for screwing onto the circuit accommodating portion side wall 67. The screw hole 68 and the male screw 171 constitute a fifth screwing mechanism, and the light source unit 1 is detachably attached to the circuit housing portion side wall 67 by the fifth screwing mechanism. The edge of one end of the circuit accommodating portion side wall 67 is in contact with the base 14. The circuit housing portion 6 is made of aluminum and is connected to the base portion 5 via an insulating member (not shown).

  The circuit housing 6 includes a drive circuit 31 including various circuit components for driving the LED module 13 and a disk-shaped circuit board 32 on which the drive circuit 31 is soldered to one surface. The circuit unit 3 is accommodated. The circuit board 32 has a diameter substantially equal to the inner diameter of the circuit housing portion 6, and the drive circuit portion 3 is inserted into the circuit housing portion 6. The other surface of the circuit board 32 faces the side surface of the base portion 5 of the holding pillar 17 provided with the first pin plug 16, and a first receptacle (not shown) corresponding to the first pin plug 16 is provided. Yes.

  On the outer peripheral surface of the circuit housing portion 6, a male screw 65 for removably screwing the heat radiating portion 2 is provided. The edge of one end of the circuit housing portion 6 is in contact with the base 14, and the other end side. Has a bottom surface 66. A base portion 5 having a substantially cylindrical shape is provided at an outer central portion of the bottom surface 66 via an insulating member (not shown), and a second pin plug 51 connected to the base portion 5 is provided at an inner central portion of the bottom surface 66. Is provided. The drive circuit unit 3 is provided with a second receptacle (not shown) corresponding to the second pin plug 51, and the base unit 5 is connected to the drive circuit unit 3 via the second pin plug 51.

  The heat dissipating part 2 includes a cylindrical held cylinder 27 provided inside with a female screw 271 for screwing with a male screw 65 of the circuit housing part 6, and a connecting plate 26 arranged in parallel in the circumferential direction of the held cylinder 27. And a frustoconical heat radiation shade 25 connected to the held cylinder 27 via connecting plates 26, 26, 26,. The female screw 271 of the held cylinder 27 and the male screw 65 of the circuit housing portion 6 constitute a sixth screwing mechanism, and the heat radiating portion 2 is detachably fixed to the circuit housing portion 6 by the sixth screwing mechanism. .

  Eight connecting plates 26, 26, 26,... Are equally arranged on the outer peripheral surface of the held cylinder 27 with an air passage C therebetween. The heat radiation shade 25 is disposed so as to surround the cover 4, the light source unit 1, and the circuit housing unit 6, and is coupled to the coupling plates 26, 26, 26,. Further, the diameter of the heat radiation shade 25 is increased as the distance from the held cylinder 27 increases. The held cylinder 27, the connecting plates 26, 26, 26,... And the heat radiation shade 25 are all made of aluminum and integrally formed.

  In the fourth embodiment, the heat generated from the LED module 13 is conducted in the order of the base 14, the holding pillar 17, the circuit housing side wall 67, the held cylinder 27, the connecting plates 26, 26, 26,. Is done. At this time, the heat generated from the LED module 13 is released into the outside air by the outside air passing through the inside of the heat radiation shade 25 and the outside air flowing outside the heat radiation shade 25 through the air path C. In addition, the heat radiation shade 25 is enlarged in diameter as it moves away from the cylinder 27 to be held, and has a function of adjusting the irradiation angle.

  In the fourth embodiment, the case where the held cylinder 27, the connecting plates 26, 26, 26,..., And the heat radiation shade 25 are made of aluminum has been described as an example, but the present invention is not limited to this. It may be a material such as a metal with good heat dissipation such as ceramics or resin with good heat conductivity.

  On the other hand, a male screw part 15 for removably screwing the cover part 4 is provided at the edge of the base 14, and a female screw part 41 for screwing the male screw part 15 inside the edge part of the cover part 4. Is provided. Therefore, when the cover part 4 is cracked, the cover part 4 can be separated from the base 14 by rotating the cover part 4 in the clockwise direction, and can be replaced with a new cover part 4. When the light source unit 1 is disconnected, the cover 4 is removed as described above, and the holding unit 17 is rotated in the clockwise direction to release the screwing of the fifth screwing mechanism. It is possible to replace the light source unit 1 by separating from the housing unit 6. On the other hand, when cleaning the dust outside and inside the heat dissipation cap 25 of the heat dissipating part 2, the heat dissipating part 2 is rotated clockwise to release the screwing of the sixth screwing mechanism to dissipate the heat dissipating part 2. Can be separated from the circuit housing portion 6 and the heat radiation shade 25 can be cleaned. Further, when a disconnection occurs in the drive circuit unit 3, the drive circuit unit 3 is removed from the second pin plug 51 by removing the light source unit 1 and removing the drive circuit unit 3 as described above. The drive circuit unit 3 can be replaced.

  Note that a knob may be provided on the other surface of the drive circuit unit 3 in order to facilitate the extraction of the drive circuit unit 3. In the above-described example, the case where the fifth screwing mechanism and the sixth screwing mechanism are released by rotating in the clockwise direction has been described as an example. In such a case, each screwing mechanism may be unscrewed.

  In the fourth embodiment, the fifth screwing mechanism is configured by a male screw 171 provided on the outer peripheral surface of the holding column 17 of the light source unit 1 and a screw hole (female screw) 68 provided on the inner side of the circuit accommodating portion side wall 67. However, it is not limited to this. The screw mechanism may be configured by providing a female screw at a position where the male screw is provided and a male screw at a position where the female screw is provided.

(Embodiment 5)
FIG. 9 is a block diagram illustrating the configuration of the illumination apparatus according to Embodiment 5 of the present invention. The same parts as those in Embodiments 1 to 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The lighting device according to Embodiment 5 includes a drive circuit unit 3 connected to the LED module 13 via the first pin plug 16, and includes a control unit 70 that controls the drive circuit unit 3 and the temperature of the LED module 13. And a lighting control unit 8 for turning on or off the white LEDs 11, 11, 11,... Of the LED module 13 based on the detection result of the temperature detecting unit 9.

  When a plurality of white LEDs 11, 11, 11,... Are used, the temperature generated from the LED module 13 may reach 100 degrees Celsius or more. However, it is also assumed that the replacement work by the user is performed with bare hands. Therefore, it is necessary to control the temperature of the part (for example, the cover part 4 and the heat radiating part 2) in contact with the user's bare hands so that the user does not get burned during the replacement work during use. Further, if the LED is continuously controlled at a high temperature, it may cause a short life. In consideration of such circumstances, it is desirable to control the temperature generated from the LED module 13 to 90 degrees Celsius (safety limit temperature) or less.

  The temperature detector 9 is provided on the LED substrate 12 and detects the temperature generated from the LED module 13. For example, when the detection result of the temperature detection unit 9 is equal to or higher than the safety limit, the control unit 70 instructs the lighting control unit 8 to turn off the white LEDs 11, 11, 11,. The white LEDs 11, 11, 11,. After that, when the temperature of the LED module 13 decreases and the detection result of the temperature detection unit 9 is below the safety limit, the control unit 70 instructs the lighting control unit 8 to turn on the white LEDs 11, 11, 11,. The control unit 8 turns on the white LEDs 11, 11, 11,.

  In the fifth embodiment of the present invention, the case where the safety limit temperature is set to 90 degrees Celsius has been described as an example. However, the present invention is not limited to this, and the safety limit temperature can be freely set as necessary. good.

  In the fifth embodiment of the present invention, the example in which the lighting control unit 8 is provided and the white LEDs 11, 11, 11,... Are turned off when the temperature generated from the LED module 13 is equal to or higher than the safety limit temperature has been described. It is not limited to. For example, current control means for controlling the amount of current supplied to the white LEDs 11, 11, 11,... Of the LED module 13 is provided, and the white LEDs 11, 11, 11 when the temperature generated from the LED module 13 is equal to or higher than the safety limit temperature. ,... May be configured to reduce the amount of current supplied.

(Embodiment 6)
FIG. 10 is a configuration block diagram for explaining the operation of lighting apparatus 100 according to Embodiment 6 of the present invention. The illumination device 100 according to Embodiment 6 of the present invention is remotely operated by the remote operation device A. The same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  The lighting device 100 according to the sixth embodiment includes a drive circuit unit 3 connected to the LED module 13 via the first pin plug 16, and includes a control unit 70 that controls the drive circuit 3 and instructions from the control unit 70. .., A current control unit 18 that increases / decreases and interrupts the amount of current supplied to the white LEDs 11, 11, 11,... Of the LED module 13, and a receiving unit 10 that receives a signal from the remote control device A. .

  By operating the remote control device A, the user can remotely control the brightness of the lighting device 100 and turning on or off. For example, when an instruction signal for increasing the brightness by operating the remote operation device A by the user is transmitted from the remote operation device A, the receiving unit 10 receives the signal. The control unit 70 instructs the current control unit 18 to control (increase) the current amount based on the signal received by the receiving unit 10. In accordance with the instruction from the control unit 70, the current control unit 18 increases the amount of current supplied to the white LEDs 11, 11, 11,.

  As described above, the sixth embodiment of the present invention includes the current control unit 18 and controls the amount of current that the current control unit 18 supplies to the white LEDs 11, 11, 11,... Based on the signal from the remote operation device A. And although the case where the brightness of lighting apparatus 100 and lighting or light extinction was adjusted was explained as an example, it is not restricted to this. For example, each white LED 11, 11, 11,... Can be controlled to be turned on or off, and the white LED 11, 11, 11,. You may make it adjust lighting or light extinction.

  As described above, in the first to sixth embodiments, the light source unit 1, the heat radiating unit 2, the cover unit 4, and the circuit unit 7 have been described as being detachable individually. If at least one is detachable, the effect of the present application that maintenance such as replacement or cleaning can be easily performed can be enjoyed. That is, for example, only the circuit unit 7 is detachable, and the other light source unit 1, the heat radiating unit 2, and the cover unit 4 are integrally formed, or the cover unit 4 and the light source unit 1 that are integrally formed. Even if the two parts are detachable and the other heat radiation part 2 and the circuit part 7 are integrally formed, maintenance such as replacement or cleaning of the detachable part can be easily performed.

  It should be understood that the embodiment disclosed this time is illustrative in all respects and not restrictive. The technical scope of the present invention is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims and the like.

It is a schematic principal part longitudinal cross-sectional view which shows the structure of the illuminating device which concerns on Embodiment 1 of this invention. It is a principal part disassembled perspective view of the illuminating device which concerns on Embodiment 1 of this invention. It is a principal part disassembled perspective view which shows the structure of the thermal radiation part of the illuminating device which concerns on Embodiment 1 of this invention. It is a principal part electric circuit diagram of the illuminating device which concerns on Embodiment 1 of this invention. It is a principal part disassembled perspective view which shows the structure of the illuminating device which concerns on Embodiment 2 of this invention. It is a principal part disassembled perspective view which shows the structure of the illuminating device which concerns on Embodiment 3 of this invention. It is the principal part top view which looked at the illuminating device which concerns on Embodiment 4 of this invention from the cover part side. It is sectional drawing by the VIII-VIII line of FIG. It is a block diagram explaining the structure of the illuminating device which concerns on Embodiment 5 of this invention. It is a block diagram for demonstrating the effect | action of the illuminating device which concerns on Embodiment 6 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light source part 2 Heat radiation part 3 Drive circuit part 4 Cover part 5 Base part 11 White LED
21 Heat radiation fin 21A Heat radiation disk group (heat radiation plate)
21B Heat radiation block 100 Illumination device A Remote control device

Claims (3)

A base having LEDs on one side, and a light source part having a columnar holding part provided on the other side of the base ;
A cylindrical heat radiating part that is held on the outer peripheral surface of the holding part and radiates heat from the LED, and
Covering the LED, a lighting device and a covering portion for transmitting light from the LED,
The said cover part and the said thermal radiation part are attached with respect to the said light source part so that attachment or detachment is possible, The illuminating device characterized by the above-mentioned . A circuit unit including a circuit for driving the LED;
The lighting device according to claim 1, wherein the circuit unit is detachably attached to an end of the holding unit . The lighting device according to claim 2, wherein the circuit part is divided into a part on the light source part side and a part on the base part side, and each part is detachable.

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