JP2013118149A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device that can smoothly perform a wiring operation.SOLUTION: The lighting device includes a mounting member 1 having a mounting part 4 for mounting on a device mounting surface C at an approximately central part, a light source part body 2 having a light source part 7 and mounted on a front side of the mounting member 1 in an opening and closing state, connection means Cn2, Cn3 for power supplying and power receiving for electrically connecting a mounting member 1 side and a light source part body 2 side, and a connection detection means 100 connected between the connection means Cn2, Cn3 and the light source part 7.

Description

  Embodiments of the present invention relate to an illuminating device including a connection unit that electrically connects an attachment member side attached to an apparatus attachment surface such as a ceiling surface and a light source unit main body side.

  Recently, along with higher output and higher efficiency of LEDs (light-emitting diodes), lighting devices that can be used indoors or outdoors using LEDs as light sources have been developed. This illuminating device is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined brightness, and is used as, for example, a ceiling light for a general house attached to a ceiling surface or the like.

  However, the light emitted from the LED has high directivity and is likely to cause glare, and uneven brightness tends to occur. Therefore, in order to suppress glare and improve the uniformity of the light emitting surface, a new illumination device that performs illumination using a light guide plate has been developed.

  In the case of such an illuminating device, for example, an adapter is electrically and mechanically connected to a hanging ceiling body that is a wiring device installed on a ceiling surface, and the illuminating device main body is attached to the adapter. Therefore, when attaching or removing the illuminating device main body, an opening corresponding to the adapter is formed in the central portion of the light guide plate so that the adapter can be operated.

  However, the opening in the central portion formed corresponding to the adapter is a portion where light is not guided, and this portion becomes dark and the central portion becomes a dark portion. For this reason, it can be considered that the light guide plate is configured without forming an opening.

  In this case, in order to enable operation of the adapter and the like, the mounting member attached to the device mounting surface such as the ceiling surface and the light source unit main body are configured to be separable, and the mounting member side and the light source unit main body side are separated by an electric wire or the like. Must be electrically connected.

JP 2009-283197 A International Publication No. 2011/081246

However, in the case of the above configuration, the electrical connection between the mounting member side and the light source unit main body side may be incompletely performed. In addition, there is a problem in that an electric wire having a predetermined length that connects the mounting member side and the light source unit main body side cannot be accommodated in the apparatus or is forcibly bent and cannot be smoothly processed. Arise.
Embodiments of the present invention have been made in view of the above-described problems, and an object of the present invention is to provide an illumination device that can be reliably connected.
Moreover, it aims at providing the illuminating device which can perform a wiring process smoothly.

  An illuminating device according to an embodiment of the present invention includes a mounting member having a mounting portion at a substantially central portion for mounting on a mounting surface of the device, a light source portion main body having a light source portion and attached to the front side of the mounting member so as to be opened and closed. It has.

  In addition, a power supply and power receiving connection means for electrically connecting the attachment member side and the light source section main body side, and a connection detection means connected between the connection means and the light source section are provided.

  According to the embodiment of the present invention, it is possible to provide an illuminating device that can securely connect the attachment member side and the light source unit main body side and ensure safety.

It is a perspective view which shows the illuminating device which concerns on embodiment of this invention. It is a perspective view which shows the back side of the same illuminating device. It is a top view which shows the back side of the same illuminating device. FIG. 3 is an exploded perspective view showing a light source unit main body in the illumination device. FIG. 4 is a cross-sectional view taken along line YY in FIG. FIG. 6 is an enlarged view showing a part A in FIG. 5. In the same illuminating device, the attachment procedure to a ceiling surface is shown, and it is sectional drawing which shows the state which attached the attachment member to the ceiling surface. Similarly, in the illuminating device, the attachment procedure to the ceiling surface is shown, and is a cross-sectional view showing a state in which the light source unit main body is supported by the attachment member. In the same illuminating device, it is a top view which removes a diffusion cover and a light-guide plate, and is seen from the front side. In the same illuminating device, it is a perspective view which shows an attachment member seen from the front side, in order to show the arrangement | positioning relationship of the electric wire derived | led-out from the light source part and to which the connector for power reception was connected. It is a schematic block block diagram in the illuminating device.

  The illuminating device of this embodiment is a type used by being attached to a hanging sealing body as a wiring fixture installed on the device attachment surface, and for example, illuminates a room using a light guide plate.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 11. In the figure, the wiring connection relationship such as electric wires may be omitted. In addition, the same code | symbol is attached | subjected to the same part and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1 to FIG. 5 and FIG. 7, the illumination device basically includes two members, an attachment member 1 and a light source unit main body 2. The attachment member 1 is provided with a lighting device 3, an adapter guide as the attachment portion 4, an indirect light source portion 5, and an auxiliary component unit 6 provided with a plurality of electrical auxiliary components. The light source unit body 2 includes a light source unit 7, a light guide plate 8, a frame member 9, and a diffusion cover 10.

  Further, the illuminating device is an infrared remote control transmitter Rc that controls the lighting state of the adapter A and the light source unit 2 that are electrically and mechanically connected to the hanging ceiling body Cb installed on the ceiling surface C as the device mounting surface. It has. Such an illuminating device is formed in a substantially square appearance, and the front side is a light irradiation surface, and the back side is a mounting surface to the ceiling surface C. These components will be described sequentially.

  The attachment member 1 is an apparatus main body formed in a substantially rectangular flat plate shape from a metal material such as a cold rolled steel plate. Specifically, it is a chassis, and a substantially circular opening 11 in which a hooking sealing body Cb installed on the ceiling surface C and a mounting portion 4 to be described later facing the adapter A are arranged is formed in a substantially central portion. Has been.

  Further, a locking bracket 12 bent in a key shape is attached to a substantially central portion on one side of the attachment member 1 facing in the longitudinal direction by a fixing means such as a screw. On the other hand, a pair of mounting brackets 13 that are bent in a substantially L shape and extend to the front side are similarly attached to the corners at both ends on the other side by fixing means such as screws.

  As representatively shown in FIG. 5, the lighting device 3 includes a circuit board and circuit components such as a control IC, a transformer, and a capacitor mounted on the circuit board. The circuit board is formed in a plate shape so as to surround the center portion, and circuit components are mounted on the surface side thereof.

  The circuit board is electrically connected to the adapter A side, and is connected to a commercial AC power source via the adapter A. Therefore, the lighting device 3 receives this AC power supply, generates a DC output, supplies the DC output to the light source unit 7 through the electric wire, and controls the light source unit 7 to be lit.

  For this reason, on the front side of the mounting member 1, as shown in FIGS. 5, 7, 9, and 10, a power feeding connector Cn3 is disposed as power feeding connecting means connected to the lighting device 3. The power feeding connector Cn3 has a substantially box-like outer shape, and a connection port P is formed as a connection portion on one side surface side.

  More specifically, the connection port P has a concave shape, and a power receiving connector Cn2 as a power receiving connecting means is inserted and can be electrically connected. The connection port P is arranged in a direction substantially orthogonal to the front side direction, that is, in a substantially horizontal direction and in an inward direction.

  Such a lighting device 3 is attached to and covered with the lighting device cover 35 and disposed on the back side of the mounting member 1 as shown in FIG. 2 and FIG. In this case, the circuit board is attached with the circuit components facing the front side (the lower side in the drawing). In addition, you may make it mount components with comparatively small height dimensions, such as a switching element and a surface mounting component, on the back surface side of a circuit board.

The lighting device cover 35 is formed in a substantially rectangular short cylinder shape by a metal material such as a cold rolled steel plate, and the side wall 35a is inclined so as to expand toward the front surface side. An opening 35c is formed at the center.
The lighting device cover 35 is mounted with a front flange mounted on the mounting member 1 and screwed.

  An elastic member 36 is attached to the back side of the lighting device cover 35. The elastic member 36 is a metal spring member made of a material such as stainless steel, and is attached corresponding to each side of the lighting device cover 35, and extends to the back side so that the pair of distal end sides expands. ing.

  The elastic member 36 is a member disposed so as to be interposed with elastic deformation between the lighting device and the ceiling surface C in a state where the lighting device is attached to the ceiling surface C as the device mounting surface. It acts to securely hold the ceiling surface C.

  The attachment portion 4 is an adapter guide, a member through which the adapter A is inserted and engaged, and a member for attaching the lighting device to the ceiling surface C. As shown in FIGS. 2, 3 and 5, the adapter guide is formed in a substantially cylindrical shape, and a circular engagement port 41 through which the adapter A is inserted and engaged is provided at the center. Yes. The adapter guide is disposed corresponding to the opening 11 formed in the substantially central portion of the mounting member 1.

  Note that the attachment portion 4 is not necessarily a member referred to as an adapter guide or the like. For example, it may be an opening formed in a chassis or the like, and means a member or a portion that is opposed to the hooking sealing body Cb as a wiring device and to which the adapter A is engaged. The point is a member or part for attaching the lighting device to the ceiling surface C.

The indirect light source unit 5 is disposed on the back side of the mounting member 1 and mainly has a function of illuminating the ceiling surface C brightly. As shown in FIGS. 2 to 5, a plurality of indirect light source parts 5 are arranged around the attachment part 4, and a substrate 51 and a plurality of light emitting elements 52 mounted on the substrate 51 are provided. And.
The substrate 51 is formed in a substantially rectangular flat plate, and the light emitting elements 52 are mounted in a line along the longitudinal direction of the substrate 51.

  Substrates 51 on which the light emitting elements 52 are mounted are attached to four locations on the side wall 35 a of the lighting device cover 35. In this case, the lighting device cover 35 is formed in a substantially square shape, and the substrate 51 is attached to the linear flat surface of the side wall 35a, so that the attachment is stably performed.

  Moreover, since the side wall 35a which forms the attachment part of the board | substrate 51 is formed in the inclined shape which expands toward the front side, the board | substrate 51 will be turned to diagonally upward, ie, the ceiling surface C direction, and light emission is carried out. The light emitted from the element 52 is effectively irradiated toward the ceiling surface C direction.

  Furthermore, each indirect light source unit 5 is covered with a translucent cover 53 formed in an inclined shape such that the cross section expands toward the back side. For this reason, when the lighting device is attached to the ceiling surface C and the side portion of the lighting device is viewed from below, it is possible to make it difficult to visually recognize the elastic member 36 attached to the back side of the lighting device cover 35. Become.

  The light emitting element 52 is an LED, which is a surface-mount type LED package, and has an emission color of a light bulb color (L). The light emitting element 52 is connected to the lighting device 3 and controlled to be turned on.

The auxiliary component unit 6 is disposed in the central portion on the other side of the mounting member 1. The auxiliary component unit 6 includes a unit board and a plurality of electrical auxiliary parts mounted on the board in a horizontally long box-like case. The electrical auxiliary components in this embodiment are an infrared remote control signal receiver, a nightlight, a channel setting switch, and the like.
Next, the light source unit body 2 includes a light source unit 7, a light guide plate 8, a frame member 9, and a diffusion cover 10.
As shown in FIGS. 4 to 6, the light source unit 7 includes a substrate 71 and a light emitting element 72 mounted on the substrate 71.

  As representatively shown in FIG. 4, the substrate 71 is formed in a horizontally long rectangular shape and is made of a flat plate of glass epoxy resin (FR-4) as an insulating material, and is formed of a copper foil on the surface side. A wiring pattern is applied. Further, a resist layer is appropriately laminated on the wiring pattern. The material of the substrate 71 can be a ceramic material or a synthetic resin material when an insulating material is used. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation may be applied.

  The light emitting element 72 is an LED, which is a surface mount type LED package. A plurality of the LED packages are mounted and arranged in a straight line along the longitudinal direction of the substrate 71. The LED package is roughly composed of an LED chip disposed in a cavity formed of ceramics or synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip. It is configured.

  The LED package uses light bulb colors (L) and daylight colors (D), so-called white ones, which are alternately linear along the longitudinal direction. They are arranged side by side. The LED chip is an LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light of light bulb color (L) and daylight color (D), the light-transmitting resin has a complementary color relationship mainly with blue light. Yellow phosphors that emit yellow light and red phosphors are used to supplement reddish components. The so-called white includes daylight color (D), daylight white (N), white (W), light bulb color (L), and the like.

In addition, LED may be made to mount an LED chip directly on the board | substrate 71, and you may make it mount a bullet-type LED, and a mounting system and a format are not exceptionally limited.
The board | substrate 71 of such a light source part 7 is attached to the attachment board 73 as a heat radiating member.

  The mounting plate 73 is made of a material having good heat conduction, such as aluminum or galvanized steel plate, and is horizontally long and has a substantially C-shaped channel shape. The board 71 is attached to the inner wall of the mounting plate 73 by screwing or the like so that the back side thereof is in close contact. Therefore, the light emitting element 72 is thermally coupled to the mounting plate 73 via the substrate 71, and the light source unit 7 is unitized by mounting the substrate 71 on the mounting plate 73.

In this embodiment, as shown mainly in FIG. 4, four unitized light source sections 7 are used, and are arranged corresponding to each side of the light guide plate 8. The unitized light source sections 7 are electrically connected to each other by a connector.
The unitized light source unit 7 may be disposed on two opposite sides of the light guide plate 8 and can be appropriately selected according to the design.

  The mounting plate 73 as such a heat radiating member is disposed outside the mounting member 1 so as to be exposed to the outside, as representatively shown in FIGS. That is, each mounting plate 73 is disposed in a square shape so as to surround the mounting member 1 with the mounting member 1 facing inward.

  Further, as shown in FIGS. 2, 3, 5, 9, and 10, a power receiving connector Cn2 as a power receiving connecting means led out by an electric wire is provided from one end of the light source section 7. .

  Specifically, the power receiving connector Cn2 is electrically connected to the light emitting element 72 via the substrate 71 in the light source unit 7, and is in the vicinity of the corner of the mounting member 1 having a rectangular shape, in other words, a rectangular shape. From the vicinity of the corner portion of the light guide plate 8 forming the above, the electric wire is led out in the direction along the inner side in the longitudinal direction of the mounting member 1. The power receiving connector Cn2 is formed in a substantially rectangular parallelepiped shape and includes an insertion portion protruding forward. The insertion portion is a portion to be inserted into the connection port P of the power feeding connector Cn3, and electrical connection is made by inserting the power receiving connector Cn2 into the power feeding connector Cn3.

  In this relationship with the power receiving connector Cn2, the power feeding connector Cn3 is arranged such that the connection port P of the power feeding connector Cn3 is directed in a direction not facing the direction in which the power receiving connector Cn2 is led out. . In other words, the connection port P of the power feeding connector Cn3 is arranged so as to face away from the direction in which the power receiving connector Cn2 is led out.

  With such a configuration, in a state where the power receiving connector Cn2 is connected to the power feeding connector Cn3, the wire of the power receiving connector Cn2 has a predetermined length from the lead-out end along the inside of the mounting member 1, and thereafter the power feeding connector. A diverted form is formed that is oriented to wind around Cn3. Therefore, the long electric wire is accommodated and held in the apparatus without inadvertently protruding.

  A connection detecting means 100 is provided near the corner of the mounting member 1. The connection detecting means 100 has a function of detecting the connection state between the power receiving connector Cn2 and the power feeding connector Cn3 and stopping the supply of power to the light source unit 7 when the connection is incomplete.

  The connection detection unit 100 includes a circuit board 101 and circuit components mounted on the circuit board 101, and is covered and accommodated in a metal box-like case. Furthermore, it is electrically connected between the light source unit 7 and connection means (power receiving connector Cn2 and power feeding connector Cn3).

  Thus, since the connection detecting means 100 is disposed in the vicinity of the corner portion of the mounting member 1 and the power receiving connector Cn2 is led out from the vicinity of the corner portion by the electric wire, an effect of simplifying the wiring can be expected.

  A locking metal fitting 75 bent in a key shape is attached to the center of the opposite side of the mounting plate 73 by a fixing means such as a screw. On the other hand, a pair of attachment fittings 76 are attached to the other side of the attachment plate 73 by fixing means such as screws (see FIG. 4).

  Such locking metal fittings 75 and mounting metal fittings 76 are disposed so as to face the locking metal fittings 12 and the mounting metal fittings 13 provided on the mounting member 1 described above, and will be described in detail later. It is locked and fixed to the receiving metal 12 and the mounting metal 13.

  In the present embodiment, the locking receiving bracket 12 and the mounting bracket 13, the locking bracket 75 and the mounting bracket 76 constitute locking and coupling means between the mounting member 1 and the light source unit body 2.

  The light guide plate 8 is formed in a polygonal shape using a material having high transmittance such as acrylic resin. Specifically, it is formed in a rectangular flat plate shape, and a dot pattern consisting of a large number of white reflective dots that diffuse light is formed on the entire back side by printing and a reflective sheet is provided. Further, a diffusion sheet is provided on the entire front side. Further, the side end face of each side of the quadrilateral shape that is the outer peripheral portion of the light guide plate 8 functions as a light incident end face 81 through which light emitted from the light emitting element 72 enters and travels in the light guide plate 8. ing.

  On the light incident end face 81 of the light guide plate 8, the substrate 71 of the light source unit 7 is disposed. That is, as shown mainly in FIG. 6, the plurality of light emitting elements 72 are arranged in a straight line on the substrate 71 so that light is incident on the light incident end face 81 of the light guide plate 8. Further, the light guide plate 8 covers the front surface side of the mounting member 1 including the mounting portion 4.

  The frame member 9 is a member that constitutes the outer peripheral portion of the light source unit main body 2, and includes an outer frame 91, a front frame 92, and a translucent frame 93. The outer frame 91 is made of a synthetic resin material such as ABS resin or polycarbonate, and has a side wall that rises and has a substantially square frame shape. The front frame 92 is made of a synthetic resin material exhibiting white color, and is formed in a substantially square frame shape in a plate shape.

Similarly, the translucent frame 93 is formed in a substantially square frame shape by a translucent material such as acrylic resin. As shown in FIG. 6, the outer frame 91 and the front frame 9 Between the two. The translucent frame 93 has a function of guiding light emitted from the light guide plate 8 to brighten the side of the light source unit body 2.
These frame members 9 are attached to the mounting plate 73 side by mounting brackets whose detailed configuration is omitted.
The diffusion cover 10 is formed in a substantially square shape by performing a diffusion process on a light-transmitting material such as an acrylic resin, and is disposed so as to cover the front side of the light guide plate 8.

  Further, a diffusion member 85 is arranged on the front surface side of the light guide plate 8 and on the outer peripheral edge portion. The diffusing member 85 has a substantially triangular cross section and an elongated shape, and is formed by performing a diffusion treatment on a light-transmitting material such as an acrylic resin. By disposing the diffusing member 85 at the outer peripheral edge of the light guide plate 8, it is possible to suppress luminance unevenness and color unevenness that are likely to occur in the light incident end surface 81 of the light guide plate 8.

  As shown in FIG. 5, the adapter A is electrically and mechanically connected to a hooking sealing body Cb installed on the ceiling surface C by a hooking blade provided on the upper surface side, and has a substantially cylindrical shape. A pair of locking portions A1 are provided on both sides of the peripheral wall so as to always protrude to the outer peripheral side by a built-in spring. The locking portion A1 is immersed by operating a lever provided on the lower surface side.

  Further, as shown in FIG. 7, a power cord connected to the lighting device 3 is led out from the adapter A, and a power connector Cn1 is connected to the tip portion thereof. The power connector Cn1 is connected to a power receiving connector Cn0 provided on the lighting device 3 side (see FIGS. 9 and 10).

The infrared remote control transmitter Rc transmits, for example, a specific coded infrared remote control signal in the form of a pulse with a frequency of 38 kHz, and is provided with an all-lighting button, a dimming lighting button, a nightlight button, an off button, and the like. ing. By operating the remote control transmitter Rc toward the auxiliary component unit 6, that is, the infrared remote control signal receiving unit, the light emission state of the light emitting element 72 in the light source unit 7, that is, control of all-light lighting, dimming lighting, extinction, etc. It can be performed.
Next, a procedure for attaching the lighting device configured as described above to the ceiling surface C will be described with reference to FIGS. 5, 7, and 8.

  First, as shown in FIG. 7, the hanging ceiling body Cb is installed on the ceiling surface C. The adapter A is electrically and mechanically connected to the hooking sealing body Cb.

  In this state, the attachment member 1 side is attached to the adapter A as shown in the figure. Specifically, the fitting member 41 is engaged until the engagement portion A1 of the adapter A is securely engaged with the engagement port 41 of the adapter guide while the engagement portion 41 of the adapter guide as the attachment portion 4 in the attachment member 1 is aligned with the adapter A. 1 is pushed up from below by hand to perform the mounting operation. In this state, the power connector Cn1 led out from the adapter A is connected to the power receiving connector Cn0 on the lighting device 3 side.

  Next, the light source unit main body 2 side is attached to the mounting member 1. As shown in FIG. 8, the locking bracket 75 provided on the light source unit body 2 side is hooked on the locking bracket 12 on the mounting member 1 side to support the light source unit body 2, and the mounting member 1 side and the light source The light source unit main body 2 is supported in a suspended state by connecting the unit main body 2 side with a chain Ch. The chain Ch has a function of preventing the light source unit body 2 from dropping and improving safety.

  Thereafter, the power receiving connector Cn2 led out from one end of the light source unit 7 is connected to the power supply connector Cn3 on the lighting device 3 side disposed on the front surface side of the mounting member 1. In this case, since the power receiving connector Cn2 is led out from the light source part 7 with a sufficient length by an electric wire, the connecting operation to the power feeding connector Cn3 on the lighting device 3 side becomes easy and the power receiving connector Cn2 or The tension applied to the electric wire can be reduced. As described above, the attachment member 1 side and the light source unit main body 2 side are connected to each other by the power receiving connector Cn2 and the power feeding connector Cn3 so as to be electrically connected and separated.

  Subsequently, the light source unit body 2 is rotated with the locking metal fitting 75 side as a fulcrum, and is closed so as to cover the front surface side of the mounting member 1. In this state, the light source unit body 2 is mounted by the mounting screws S that pass through the through holes of the mounting bracket 13 provided in the mounting member 1 and are screwed into the screw holes of the mounting bracket 76 provided on the light source unit body 2 side. It is securely attached to the front side of the member 1. This state is an attachment completion state (refer FIG. 5).

  In the mounted state of the lighting device, the adapter A is inserted through the opening 35c of the lighting device cover 35, and the locking portion A1 of the adapter A is locked to the engaging port 41 of the adapter guide and is provided on the back side of the lighting device cover 35. The elastic member 36 is elastically deformed and is interposed between the back side of the lighting device cover 35 and the ceiling surface C in a compressed state. Therefore, the lighting device is firmly engaged with the adapter A without being rattled, and the mounting state is stably maintained.

When removing the illumination device, schematically, the mounting screw S is removed, the light source unit body 2 is rotated in the opening direction with the locking bracket 75 side as a fulcrum, and then the light source unit body 2 is mounted. Remove from the member 1 and open the front side of the mounting member 1. Then, the attachment member 1 can be removed by operating the lever provided on the adapter A to release the engagement of the locking portion A1 of the adapter A.
As described above, the light source unit main body 2 can be attached to the front side of the attachment member 1 so as to be openable and detachable.

  In the mounting state of the lighting device as described above, the electric wire of the power receiving connector Cn2 is accommodated and held in the device without inadvertently protruding, and the wiring process can be performed smoothly.

The lighting device 3 is disposed on the mounting member 1 side. For this reason, the weight on the light source unit main body 2 side coupled to the mounting member 1 is reduced, and the load applied to the locking bracket 12 and the mounting bracket 13, the locking bracket 75 and the mounting bracket 76 constituting the locking coupling means. Is reduced, which is advantageous in terms of strength.
Next, the connection detection unit 100 will be described with reference to FIG. FIG. 11 shows a schematic block diagram.

  The lighting device 3 includes a lighting circuit 31 and a control circuit 32. This lighting device 3 is connected to a power feeding connector Cn3. Further, as described above, a plurality of light emitting elements 72 are connected to the light source unit 7, and the light source unit 7 is connected to the power receiving connector Cn 2 via the connection detecting means 100.

  The connection detection means 100 is a connector connection detection means, and detects whether the connection between the power receiving connector Cn2 and the power feeding connector Cn3 is performed normally or incompletely.

  In this way, the lighting device 3 on the mounting member 1 side and the light source unit 7 on the light source unit main body 2 side are connected via the connection means (the power receiving connector Cn2 and the power feeding connector Cn3) and the connection detecting means 100.

  The connection detection means 100 is provided with a voltage monitoring circuit so as to monitor the potential at both ends of the connection means. That is, when the potential of the connection means is high, it is determined that the connection between the power receiving connector Cn2 and the power feeding connector Cn3 is incomplete, and the state signal is transmitted to the control circuit 32. The control circuit 32 receives a status signal and sends a signal for stopping the supply of power to the lighting circuit 31. Thereby, supply of the electric power to the light source part 7 is stopped.

On the other hand, when the potential of the connecting means is low, it is determined that the connection between the power receiving connector Cn2 and the power feeding connector Cn3 is normal, and processing for continuing the supply of power to the light source unit 7 is executed.
When the connection between the power receiving connector Cn2 and the power feeding connector Cn3 is performed in an incomplete state, there is a problem that heat is generated at the connection portion.
However, according to the above configuration, heat generation at the connection portion can be avoided, and safety can be ensured.

  For example, a temperature detection element may be used to detect heat generation at the connection portion and detect the connection state between the power receiving connector Cn2 and the power feeding connector Cn3. It is not limited to those.

  For example, when power is supplied to the lighting device 3 by operating the infrared remote control transmitter Rc in the mounted state of the lighting device, the light emitting element 72 is energized through the substrate 71, and each light emitting element 72 is turned on by the lighting device 3. Lighting control is performed. The light emitted from the light emitting element 72 enters the light incident end face 61 of the light guide plate 8, and this incident light is totally reflected within the light guide plate 8 and spreads over the entire light guide plate 8, and is formed on the back side. The light is reflected and diffused by a dot pattern made of reflective dots or a reflective sheet, and further diffused and homogenized by the diffusion cover 10 is emitted from the front side.

  In this case, the light guide plate 8 covers the front side of the mounting member 1 including the mounting portion 4. That is, the light guide plate 8 is not formed with a central opening for enabling the adapter A to be operated. For this reason, it is possible to make the luminance of the light emitting surface uniform without generating a dark portion at the center of the light guide plate 8, realize a good light distribution state, and improve the feeling of brightness.

  If an opening is formed in the central portion of the light guide plate 8, the opening is a portion where light is not guided, and this portion becomes dark and a phenomenon occurs in which the central portion becomes a dark portion.

  In addition, when the indirect light source unit 5 is energized, each light emitting element 52 is turned on, and light emitted obliquely upward from the light emitting element 52 is transmitted through the translucent cover 53 and from around the mounting unit 4. The ceiling surface is mainly irradiated so as to be emitted. Therefore, the ceiling surface becomes bright and the feeling of brightness in the space can be improved.

  When each light emitting element 72 in the light source unit 7 is turned on, heat is generated from each light emitting element 72. The heat generated from each light emitting element 72 is mainly conducted from the back surface side of the substrate 71 to the mounting plate 73 which is a heat radiating member, and is radiated. In this case, the mounting plate 73 is disposed outside the mounting member 1 so as to be exposed to the outside, so that it is easily cooled by the outside air and is effectively radiated.

  As described above, according to the present embodiment, the electrical connection between the attachment member 1 side and the light source unit main body 2 side can be reliably performed, and safety can be ensured. Moreover, it becomes possible to provide the illuminating device which can perform a wiring process smoothly, without an electric wire protruding carelessly.

  In the above embodiment, as the locking and coupling means, a hinge structure may be applied, and the light source unit main body may be attached to the front side of the attachment member so as to be opened and closed. Furthermore, for example, the light source unit body may be attached to and detached from the mounting member by providing clamp fittings on opposite sides of the outer frame. Also in this case, the front side of the mounting member can be opened and closed by the light source body. Thus, various structures can be applied to the locking and coupling means, and the locking and coupling means is not limited to a specific one.

  The present invention is not limited to the configuration of the embodiment described above, and various modifications can be made without departing from the spirit of the invention. The above embodiment is presented as an example, and is not intended to limit the scope of the invention.

  In the above embodiment, the case where the light guide plate formed in a rectangular shape is used and the light emitting surface is formed in a substantially square shape has been described. For example, the light guide plate is formed in a hexagonal shape, an octagonal shape, etc. A light emitting element is arranged corresponding to each side, the front frame is formed in a circular shape, and the light emitting surface of the light guide plate is exposed in a circular shape so that a circular light emitting surface is formed. You can also

  Moreover, although the said embodiment is suitable for the illuminating device which performs illumination using a light-guide plate, it is not restricted to this. It is applicable also to the illuminating device which does not use a light-guide plate. Furthermore, the light source is suitable when a light emitting element such as an LED is used, but is not particularly limited. A fluorescent lamp or the like may be used.

DESCRIPTION OF SYMBOLS 1 ... Mounting member, 2 ... Light source part main body,
3 ... lighting device, 4 ... mounting part (adapter guide),
5 ... Indirect light source unit, 6 ... Auxiliary component unit,
7 ... light source unit, 8 ... light guide plate,
9 ... Frame member, 10 ... Diffusion cover,
71 ... Substrate, 72 ... Light emitting element (LED),
73 ... Radiating member (mounting plate), 81 ... Light incident end face,
100: Connection detection means,
A ... Adapter, C ... Device mounting surface (ceiling surface),
Cb ... Wiring device (hook ceiling body),
Cn2 ... connection means for power reception (connector for power reception),
Cn3: Connection means for power supply (connector for power supply),
P: Connection part (connection port for power supply connector Cn3)
Rc: Infrared remote control transmitter

Claims (3)

An attachment member having an attachment portion for attachment to the device attachment surface at a substantially central portion;
A light source unit main body having a light source unit and attached to the front side of the mounting member so as to be openable and closable;
Power supply and power receiving connection means for electrically connecting the attachment member side and the light source unit main body side;
Connection detection means connected between the connection means and the light source unit;
An illumination device comprising: An attachment member having an attachment portion for attachment to the device attachment surface at a substantially central portion;
A light source unit main body having a light source unit and attached to the front side of the mounting member so as to be openable and closable;
Power receiving connection means connected to the light source unit and led out from the light source unit main body by an electric wire;
Power supply connection means disposed on the attachment member so that the connection portion is in a direction substantially orthogonal to the front surface side direction and is not opposed to the direction in which the power reception connection means is led out;
An illumination device comprising:   The light source main body includes a polygonal light guide plate having a light incident end surface on an outer peripheral portion, and a light emitting element disposed so that outgoing light is incident on the light incident end surface of the light guide plate, The lighting device according to claim 2, wherein the power receiving connection means is led out from the vicinity of a corner of the polygonal light guide plate by an electric wire.

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