JP5830678B2 - Lighting device and lighting fixture - Google Patents

Description

  The present invention relates to a lighting device and a lighting fixture that use an LED (light emitting diode) as a light source and are mainly mounted on a ceiling surface to illuminate the lower part.

Conventionally, an illumination device having an LED light source has been used (see, for example, Patent Document 1).
As illustrated in FIG. 13, the lighting device 100 described in Patent Literature 1 includes a casing 103, a lighting unit 101, and a cover 102.
The lighting unit 101 includes a substrate 104, a plurality of LED light sources 105, and a reflecting member 106, and the plurality of LED light sources 105 are mounted on the substrate 104 in a row. The reflection member 106 is provided on the substrate 104 and surrounds the plurality of LED light sources 105.
The cover 102 has translucency, is provided in front of the illumination unit 101 in the irradiation direction, and is fixed to the casing 103. The cover 102 has an end portion 102 </ b> A having a rough surface property, and scatters light emitted from the LED light source 105.
Thus, when a plurality of LED light sources 105 are mounted in a row, unevenness in illuminance at the end portion of the illumination device 100 is improved by providing undulations at the end portion 102A of the cover 102.

JP 2010-56045 A (FIG. 5)

However, in the illumination device 100 described in Patent Document 1 described above, the light at the end is scattered, but the brightness at the end is clearly lower than that at the center, and the problem regarding light distribution is fundamentally solved. Not.
Further, when the LED light sources 105 are arranged in a row on the substrate 104, there is a problem that light distribution variation of each LED light source 105 can be considered.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide an illuminating device and a luminaire that eliminate the uneven distribution of light from an LED light source with a simple configuration.

The lighting device of the present invention includes a plurality of first-type LED light sources connected in series, a second-type LED light sources connected in series, and a plurality of the first-type LED light sources on a mounting surface. And a substrate on which the plurality of LED light sources of the second type are mounted, each of the plurality of LED light sources of the first type and the plurality of LED light sources of the second type includes a lens, The plurality of LED light sources of the first type and the plurality of LED light sources of the second type are alternately arranged in even rows on the same straight line or the same circle every even number, and are connected in series. Each of the plurality of LED light sources of the first type is arranged so that the position of the anode and the position of the cathode are alternately switched , and each of the plurality of LED light sources of the second type connected in series is Anode position and cathode position Bets are intended to be arranged so as alternating.

The lighting device of the present invention includes a first connector connected to each anode side of the plurality of first type LED light sources and the second type LED light sources connected in series. A second connector connected to each cathode side of the plurality of LED light sources of the first type and the plurality of LED light sources of the second type connected in series. Each of the second connectors is disposed between one of the plurality of LED light sources of the first type and one of the plurality of LED light sources of the second type adjacent to the first connector. It is what is done.

  Furthermore, the lighting fixture of the present invention uses the lighting device described above.

  In the present invention, since the arrangement of at least a pair of adjacent LED light sources is arranged in such a direction that the positions of the anode and the cathode of each LED light source are alternately switched, it is possible to cancel out the light distribution deviation of each LED light source, It is possible to provide a lighting device and a lighting fixture that have an effect of preventing the light distribution of the device from being biased.

The whole perspective view which looked at the lighting fixture of 1st Embodiment from the downward direction The exploded perspective view which looked at the lighting fixture of 1st Embodiment from the downward direction Sectional drawing which passes along the center of the lighting fixture of 1st Embodiment The top view which looked at the lighting fixture of 1st Embodiment from upper direction The top view which shows the LED unit of 1st Embodiment The top view which shows the wiring of the LED unit of 1st Embodiment Enlarged plan view of portion A in FIG. FIG. 7 is a plan view corresponding to FIG. 7 showing the arrangement of LED units having a single LED light source. The fragmentary top view which shows the case where the LED unit of 1st Embodiment is connected and connected The top view which shows the LED unit of 2nd Embodiment FIG. 11 is an enlarged plan view of a portion B in FIG. 10 and an arrangement of LED units including two different types of LED light sources. FIG. 11 is a plan view plan view corresponding to FIG. 11 showing the arrangement of an LED unit including a single LED light source Exploded perspective view of a conventional lighting device

(First embodiment)
Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
In addition, in the following description, the case where a lighting fixture is attached to the ceiling surface which is a to-be-attached surface, and the downward direction is illuminated is demonstrated. Therefore, unless otherwise indicated, upper (upper, upper, etc.) means the ceiling surface side, and lower (lower, lower, etc.) means the floor surface side.

As shown in FIG. 1, the lighting fixture 10 of embodiment which concerns on this invention is suitable for attaching to the ceiling surface 11 grade | etc., Which is a to-be-attached surface, and mainly illuminating below.
As shown in FIG. 2 and FIG. 3, the lighting fixture 10 has, for example, a square plate-like fixture main body 20 having a fitting 21 for attachment to the hook ceiling 12 attached to the ceiling surface 11.

An upper unit 30A, which is an illumination device 30 (hereinafter referred to as an LED unit 30), an upper frame 23, and an upper panel 22 are provided on the upper side of the instrument body 20 (that is, on the ceiling surface 11 side). Further, a lower unit 30B that is an LED unit 30 and a reflecting plate 24 that is a reflecting member are provided on the lower side of the instrument body 20 (that is, on the illumination direction side). A translucent panel 25 that diffuses light is attached.
The panel 25 has a square shape, for example, and a panel cover 251 that does not transmit light is provided at opposite ends.

Next, the LED unit 30 used for the upper unit 30A and the lower unit 30B will be described.
In the following description, the LED unit 30 will be described unless the upper unit 30A and the lower unit 30B are particularly distinguished.
As shown in FIG. 4, the upper unit 30 </ b> A is provided outward in all directions on the upper side of the instrument body 20. Further, the lower unit 30B is provided at two places on the lower side of the instrument body 20, and radiates light inward.

As shown in FIG. 3, in the lighting fixture 10 using the LED unit 30 described above, the light L1 emitted toward the inside of the lighting fixture 10 from the lower unit 30B provided on the lower side of the fixture main body 20 is The light is reflected downward by the reflecting plate 24 and is incident on the panel 25 and diffuses. Thereby, the whole panel 25 becomes a light source and illuminates the lower part.
On the other hand, light L <b> 2 emitted from the upper unit 30 </ b> A provided on the upper side of the fixture body 20 to the outside of the lighting fixture 10 is irradiated to the ceiling surface 11.

As shown in FIGS. 5 and 6, the LED unit 30 includes, for example, an elongated rectangular substrate 31, and the mounting surface 311 includes a plurality of first LED light sources 32 </ b> A of different types and a plurality of first LED light sources 32 </ b> A. Two LED light sources 32B are mounted. In addition, when naming two types of LED light sources 32A and 32B generically, "LED light source 32" is displayed.
On the mounting surface 311, a connector 33 is attached as an electrical connection portion to which electric wiring is connected and supplied with electric power at a position inside the LED light source 32 at the end portion as viewed from both ends of the substrate in the longitudinal direction.
The plurality of first LED light sources 32A are connected in series by the first circuit 34A, and the plurality of second LED light sources 32B are separate from the first LED light source 32A, and the second circuit 34B. Are connected in series.

Therefore, the first LED light source 32A and the second LED light source 32B can be individually controlled.
Further, the first circuit 34A and the second circuit 34B are separate and can be wired in a crank shape, for example. At this time, wiring is performed so that the crank shapes of the first circuit 34A and the second circuit 34B are parallel to each other.

The first LED light source 32A and the second LED light source 32B are alternately arranged with a group of even numbers (here, for example, two) except for a part. And in the edge part, the LED light source 32 of a kind different from the LED light source 32 arrange | positioned next (inner side) is arrange | positioned.
For example, in FIG. 5, since the first LED light source 32A is arranged at the lower end portion, a different type of second LED light source 32B is arranged next to the lower end portion.

Here, as shown in FIG. 7 in which the A portion in FIG. 5 and the A portion in FIG. 6 are enlarged, the LED light source 32 has a lens 321 made of silicon resin. The lens 321 may be attached with being shifted in one direction due to variations in manufacturing. For example, as shown in FIG. 7, when the lens 321 is shifted to the cathode mark 322A side (right side in FIG. 7), the light distribution of the LED light source 32 is shifted to the cathode 322 side.
Therefore, as shown in FIG. 7, in the LED unit 30, each LED light source 32 is arranged on the same line ST and the position of the anode 323 of at least a pair of LED light sources 32 adjacent to the same line ST. The positions of the cathodes 322 are arranged and connected in such a direction that they are alternately switched left and right (left and right in FIG. 7). Thereby, the light distribution deviation of each LED light source 32 is canceled.

As mentioned above, according to the illuminating device 30 of 1st Embodiment which concerns on this invention demonstrated, arrangement | positioning of at least a pair of adjacent LED light source 32 among the several LED light sources 32 mounted in the board | substrate 31 is made into each LED light source 32. The position of the anode 323 and the position of the cathode 322 are alternately arranged.
For this reason, the light distribution deviation of each LED light source 32 can be canceled and the light distribution of the LED unit 30 can be prevented from being biased.

  A plurality of LED light sources 32 are arranged on the same line ST, and are arranged in such a direction that the positions of the anode 323 and the cathode 322 of the LED light source 32 are alternately switched to the left and right with respect to the same line ST along the same line ST. did. For this reason, the light distribution deviation of each LED light source 32 can be canceled and the light distribution of the LED unit 30 can be prevented from being biased.

  Since the connector 33 is arranged on the inner side of the LED light source 32 when viewed from the end of the substrate 31, when the LED unit 30 is connected, the brightness of the joint can be prevented from being reduced, and the brightness unevenness can be further reduced, thereby distributing the light. Can be prevented.

  As mentioned above, according to the lighting fixture 10 of 1st Embodiment which concerns on this invention demonstrated, the LED unit 30 mentioned above was used. That is, at least a pair of adjacent LED light sources 32 among the plurality of LED light sources 32 mounted on the substrate 31 are arranged in directions in which the positions of the anodes 323 and the cathodes 322 of the LED light sources 32 are alternately switched. did. For this reason, the light distribution deviation of each LED light source 32 can be canceled and the light distribution of the LED unit 30 can be prevented from being biased.

Moreover, since the even numbered first LED light sources 32A and the even numbered second LED light sources 32B are alternately arranged, the pattern wiring in the LED unit 30 can be shortened and connected.
Further, since components such as a chip jumper resistor can be reduced, it is possible to avoid an increase in cost, and it is not necessary to use both the front and back surfaces of the substrate 31 for pattern printing as the LED unit 30, so that the LED unit 30 is opposite to the mounting surface 311. The surface can be used for heat dissipation.

The LED unit 30 of the present invention is not limited to the case where a plurality of first LED light sources 32A and a plurality of second LED light sources 32B of different types are mounted, but as shown in FIG. The present invention can also be applied to a case where only a plurality of first LED light sources 32A are configured.
Further, as shown in FIG. 9, the connector 33 is disposed at a position inside the LED light source 32 when viewed from both ends in the longitudinal direction of the substrate 31. For this reason, when the lower unit 30B is provided at two locations on the lower side of the instrument main body 20, it is possible to prevent the brightness of the joint from being reduced, the brightness unevenness is further reduced, and the effect of preventing the uneven distribution of light. There is.

(Second Embodiment)
Next, a second embodiment according to the present invention will be described.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the illuminating device (LED unit) 30 and the lighting fixture 10 which concern on 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIG. 10, the LED unit 35 has a substantially circular shape, and a plurality of first LED light sources 32A and a plurality of second LED light sources 32B of different types are mounted on the mounting surface 311. In addition, when naming two types of LED light sources 32A and 32B generically, "LED light source 32" is displayed.

In addition, a pair of connectors 33 to which electric wiring is connected and supplied with electric power are attached to the mounting surface 311.
The plurality of first LED light sources 32A are connected in series by a first circuit 34A (see FIG. 11), and the plurality of second LED light sources 32B are separate from the first LED light source 32A. They are connected in series by the second circuit 34B (see FIG. 11).
Therefore, the first LED light source 32A and the second LED light source 32B can be individually controlled.

The first LED light source 32A and the second LED light source 32B are alternately arranged with a group of even numbers (here, for example, two) except for a part.
As shown in FIG. 11 in which the portion B in FIG. 10 is enlarged, the LED light source 32 includes a lens 321 made of silicon resin, and the lens 321 is attached so as to be shifted in one direction due to variations in manufacturing. There is.
For example, as shown in FIG. 11, when the lens 321 is shifted to the cathode mark 322A side, the light distribution of the LED light source 32 is shifted to the cathode 322 side.

Therefore, in the LED unit 35 having the first LED light source 32A and the second LED light source 32B of different types, the plurality of first LED light sources 32A are connected in series and the plurality of second LED light sources 32B are connected to the second LED light source 32B. The LED light source 32A is connected in series with a separate system.
Then, the LED light sources 32 are arranged on the same circle R1, and the positions of the anodes 323 and the cathodes 322 of at least a pair of LED light sources 32 adjacent to the same circle R1 are alternately switched in the left and right directions. Place and connect. Thereby, the light distribution deviation of each LED light source 32 is canceled.
Note that the LED unit 35 is not limited to a case where a plurality of first LED light sources 32A and a plurality of second LED light sources 32B of different types are mounted, but as shown in FIG. The present invention can also be applied to a case where only one LED light source 32A is configured.

As mentioned above, according to the illuminating device 35 and the lighting fixture 10 of 2nd Embodiment which concern on this invention demonstrated, the some LED light source 32 is arrange | positioned on the same circle R1, and the LED light source 32 of this LED light source 32 is along this same circle R1. The position of the anode 323 and the position of the cathode 322 are arranged so as to be alternately switched to the left and right with respect to the same circle R1.
For this reason, the light distribution shift of each LED light source 32 can be canceled and the light distribution of the illuminating device 35 can be prevented from being biased.

  In addition, the illuminating device and the luminaire of the present invention are not limited to the above-described embodiments, and appropriate modifications and improvements can be made.

10 Lighting fixtures 30, 35 LED units (lighting devices)
31 Substrate 32 LED light source 322 Cathode 323 Anode 33 Connector (electrical connection)
ST Same line R1 Same circle

Claims (3)

A plurality of LED light sources of a first type connected in series and a plurality of LED light sources of a second type connected in series;
A mounting surface on which the plurality of LED light sources of the first type and the plurality of LED light sources of the second type are mounted ;
Each of the plurality of LED light sources of the first type and the plurality of LED light sources of the second type includes a lens,
The plurality of LED light sources of the first type and the plurality of LED light sources of the second type are alternately arranged in even rows on the same straight line or the same circle every even number,
Each of the plurality of LED light sources of the first type connected in series is arranged such that the position of the anode and the position of the cathode are alternately switched ,
Each of the plurality of LED light sources of the second type connected in series is an illuminating device arranged so that the position of the anode and the position of the cathode are alternately switched . The lighting device according to claim 1 .
The first connector connected in series to the first connector of the plurality of LED light sources of the first type and the plurality of LED light sources of the second type connected in series, and the first connector connected in series. A plurality of LED light sources of the above type and a second connector connected to each cathode side of the plurality of LED light sources of the second type,
Each of the first and second connectors includes one of the plurality of LED light sources of the first type and one of the plurality of LED light sources of the second type adjacent to the one. A lighting device placed between them . The lighting fixture using the illuminating device of Claim 1 or Claim 2 .

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