JP6277482B2 - LED lighting fixtures - Google Patents

Description

  The present invention relates to an LED lighting apparatus having a main light source having a plurality of LEDs and an auxiliary light source.

Conventionally, LED lighting fixtures having a plurality of LEDs as a main light source and an auxiliary light source are known (see, for example, Patent Document 1).
As shown in FIG. 6, the lighting fixture (LED lighting fixture) 100 described in Patent Document 1 has a disc-shaped main body 101, and a light source unit 102 is attached to the lower surface of the main body 101.
The light source unit 102 includes a substrate 103 and a plurality of light emitting elements 104 as main light sources mounted on the substrate 103. The substrate 103 is electrically connected while four arcuate substrates 103 are joined together in a substantially circular shape as a whole. A plurality of light emitting elements 104 are mounted on the plurality of circle-shaped substrates 103 along the circumferential direction.
The predetermined substrate 103 is provided with a night light 105 as an auxiliary light source.

JP2012-160455A (FIG. 3)

In the conventional LED lighting apparatus as described in Patent Document 1 described above, the LED for the nightlight that is the auxiliary light source is generally mounted on the same substrate as the light emitting element of the light source section that is the main light source. .
For this reason, when the output of the auxiliary light source is increased, the amount of heat generated on the same substrate on which the LED of the main light source is mounted increases.

In addition, when the main light source and the auxiliary light source are mounted on the same substrate, the circuit board becomes large due to the structure. As described above, when the main light sources are arranged in an annular shape, it is common to use four circuit boards divided into four. Therefore, when a specific circuit board is enlarged, the other three boards are designed. The circuit board also needs to be enlarged in order to have the same shape, and there is a problem that the overall shape is increased.
In particular, when the auxiliary light source has a plurality of LEDs, it is conceivable that the LEDs are mounted on the circuit board separately from each other. In this case, however, a plurality of luminance points are generated, which causes design limitations.

  The present invention has been made to solve the conventional problems, and provides an LED lighting apparatus capable of suppressing the temperature rise of the circuit board of the main light source by the auxiliary light source and preventing the circuit board of the main light source from being enlarged. With the goal.

The LED lighting apparatus of the present invention includes an instrument main body, a power supply unit accommodated in the instrument main body, a first light source unit accommodated in the instrument main body and having a first LED mounted on a first circuit board, and the instrument main body. And a second light source part on which a second LED and a third LED are mounted on a second circuit board electrically connected to the first circuit board, wherein the second LED and the third LED are respectively as well as a different type, the first light source unit and the second light source unit is Ri exclusively illuminable der each other, the light flux of the first 3LED than the light flux of the first 2LED is high.

  In the LED lighting apparatus of the present invention, the first light source unit has a first circuit for lighting the first LED, and the second light source unit is a second circuit for lighting the second LED. And a third circuit for lighting the third LED, wherein the drive current of the second circuit and the drive current of the third circuit are different from each other.

  In the LED lighting apparatus of the present invention, the first light source unit has a first control unit on the first circuit board, and the second light source unit has a second control unit on the second circuit board. Is.

  In addition, the LED lighting apparatus of the present invention has a glove that is supported by the apparatus body and transmits light from the first light source unit, and the second light source unit is provided at a position where the light does not transmit light. It is what has been.

  In the present invention, by providing the first circuit board and the second circuit board separately, even if the second LED and the third LED of the second light source part are turned on, the temperature rise of the first circuit board of the first light source part is prevented. In addition, the first circuit board can be prevented from being enlarged even if the second circuit board is enlarged. In addition, since the first light source unit and the second light source unit can be turned on exclusively, the first light source unit can be used as a main light source, and the second light source unit can be used as an auxiliary light source for nightlights and emergency lights. Furthermore, since 2nd LED and 3rd LED are different types, the LED lighting fixture which has the effect that various light distribution can be performed by the combination of 2nd LED and 3rd LED can be provided.

The side view of the LED lighting fixture of 1st Embodiment which concerns on this invention The bottom view which looked at the LED lighting fixture of 1st Embodiment which concerns on this invention from the downward direction Plan view of the second light source The side view of LED lighting fixture of 2nd Embodiment which concerns on this invention The side view of the LED lighting fixture of 3rd Embodiment which concerns on this invention Plan view of a conventional LED lighting fixture

(First embodiment)
Hereinafter, the LED lighting fixture of 1st Embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1, the LED lighting apparatus 10 </ b> A according to the first embodiment can be attached to, for example, a ceiling 11 and used to illuminate a room or the like.
In the following description, the ceiling 11 side will be described as “upper” and the floor (not shown) side as “lower” when attached to the ceiling 11.

  The LED lighting fixture 10A is a fixture main body 20 attached to the ceiling 11 or the like, a ring-shaped frame 30 provided along the outer periphery of the fixture main body 20, and a translucent attached detachably to the lower side of the fixture main body 20. It has sex glove 40. Therefore, the frame 30 is located outside the globe 40.

As shown in FIGS. 1 and 2, the instrument main body 20 is formed in a circular shape from a flat plate of a metal material, and is attached to a hooking sealing body (not shown) attached to the ceiling 11 at a substantially central portion. A circular mounting hole 21 is provided.
A plurality of elastic members 27 such as sponge and rubber are attached to the upper surface of the instrument body 20, and when the instrument body 20 is attached to the ceiling 11, it is elastically deformed so that the instrument body 20 does not wobble. Yes.

On the outer side of the attachment hole 21 on the lower surface 201 of the instrument main body 20, a power supply unit 26 connected to a commercial power supply is provided via a hooking sealing body.
A lower surface 201 of the instrument body 20 is provided with a first light source 22 that is a main light source near the outer periphery. In the 1st light source part 22, the four fan-shaped 1st circuit boards 23 which divided the circumference into four are arrange | positioned along the circumferential direction, and are arrange | positioned by the circumference shape as a whole.

A first circuit 241 is provided on a mounting surface 231 that is a lower surface of each first circuit board 23, and a plurality of first LEDs 24 are mounted along the circumferential direction of the first circuit board 23. In addition, connectors 25 are respectively attached to both longitudinal ends of the first circuit boards 23 to electrically connect the adjacent first circuit boards 23 to each other. Any one of the first circuit boards 23 is electrically connected to the power supply unit 26 and supplies lighting power to each first circuit board 23 via the connector 25.
A first control unit 28 is attached to each first circuit board 23. The first control unit 28 controls the lighting power supplied via the connector 25 to control the lighting of the first LED 24.

The frame 30 is a circular ring-shaped member attached to the outer periphery of the instrument body 20, and the lower surface 301 is exposed downward on the outer side of the globe 40.
On the lower surface 301 of the frame 30, a second light source unit 31, which is an auxiliary light source, is attached downward, and is electrically connected to the first circuit board 23 of the first light source unit 22 attached to the instrument main body 20 and a harness 36. Connected.
That is, the second light source unit 31 is disposed outside the globe 40 and directly irradiates light downward without passing through the globe 40.
The second light source unit 31 is controlled to be lit exclusively with the first light source unit 22 and can be turned on only when the first light source unit 22 is turned off.

As shown in FIG. 3, the second light source unit 31 includes one of the first circuit boards 23 and a second circuit board 32 that is electrically connected by a harness 36.
A plurality of second LEDs 33 and third LEDs 34 are mounted on the second circuit board 32. The second circuit board 32 is provided with a second circuit 331 for lighting the second LED 33 and a third circuit 341 for lighting the third LED 34. The drive current of the second circuit 331 and the drive current of the third circuit 341 are different from each other. For example, an LED having a higher color temperature that is easy to recognize a space is driven with a higher current.

Different types of the second LED 33 and the third LED 34 can be used, and a third LED 34 having a higher luminous flux than the luminous flux of the second LED 33 can be used.
Here, for example, two second LEDs 33 are mounted as an emergency light, and one third LED 34 brighter than the second LED 33 is mounted as a nightlight.
A second control unit 35 is attached to the second circuit board 32 and controls lighting of the second LED 33 and the third LED 34.

The different types of LEDs refer to, for example, SMD (Surface Mount Device) having different chromaticity coordinates, or a single COB (Chip On Board) in which a plurality of light color circuits are configured.
The different chromaticity coordinates are 2700K and 6500K, blue and red and green, 2000K and 8000K, etc. Combination of color temperature and color light on the black body locus, and bluish white and strong reddish white off the black body locus The color of the bulb is considered.

Accordingly, the first light source unit 22 used during normal illumination is turned on when power is supplied from the commercial power source wired inside the ceiling 11 to the power source unit 26. The first light source unit 22 is supplied with power from the power supply unit 26 to the first circuit board 23, and turns on the first LED 24 under the control of the first control unit 28.
For example, the brightness can be adjusted by lighting a desired number of the plurality of first LEDs 24. In addition, in the case where LEDs having different colors are mixed in the first LED 24, illumination light of a desired color can be irradiated by lighting only the LED of the desired color.
At this time, the second light source unit 31 is not lit.

On the other hand, when the first light source unit 22 is turned off, the second light source unit 31 can be turned on. The second light source unit 31 is supplied with power to the second circuit board 32 from a power source such as a battery or a capacitor charged by a commercial power source, for example.
The second control unit 35 provided on the second circuit board 32 supplies power to the second circuit 331 to light the second LED 33. Further, the second control unit 35 supplies power to the third circuit 341 to light the third LED 34.

Since the second light source unit 31 that is an auxiliary light source is provided outside the globe 40, the light of the second LED 33 and the third LED 34 is directly irradiated downward without passing through the globe 40.
For this reason, it is suitable when, for example, white and highly directional light is required in the event of an emergency, where it is desired to illuminate the entrance / exit with the second LED 33 that is an emergency light.
Also, the second LED 33 that is an emergency light and the third LED 34 that is a nightlight are controlled separately and can be lit separately or simultaneously.
In addition, the 1st light source part 22 and the 2nd light source part 31 cannot be lighted simultaneously.

Next, the effect of LED lighting fixture 10A is demonstrated.
The instrument body 20 that houses the power supply unit 26 is provided with a first light source unit 22 and a second light source unit 31. In the first light source unit 22, the first LED 24 is mounted on the first circuit board 23. In the second light source unit 31, the second LED 33 and the third LED 34 are mounted on the second circuit board 32 that is electrically connected to the first circuit board 23.
Accordingly, since the first circuit board 23 and the second circuit board 32 are separately provided, even if the second LED 33 and the third LED 34 of the second light source unit 31 are turned on, the first circuit board 23 of the first light source unit 22 Temperature rise can be prevented.

In addition, since the first circuit board 23 and the second circuit board 32 are provided separately, even if the second circuit board 32 is enlarged, the first circuit board 23 is not affected. Can be prevented.
Since the first light source unit 22 and the second light source unit 31 can be turned on exclusively, the first light source unit 22 is used as a main light source, and the second light source unit 31 is used as an auxiliary light source for nightlights and emergency lights. Can do.
In addition, since the second LED 33 and the third LED 34 are different types, various light distribution controls can be performed by combining the second LED 33 and the third LED 34.

In the first light source unit 22, the first circuit 241 for lighting the first LED 24 is connected to the commercial power supply via the power supply unit 26. In the second light source unit 31, the second circuit 331 for lighting the second LED 33 and the third circuit 341 for lighting the third LED 34 can be connected to another power source such as a battery.
Further, since the drive current of the second circuit 331 and the drive current of the third circuit 341 are different from each other, the light color can be properly used or set to an arbitrary brightness.

The first light source unit 22 is controlled by a first control unit 28 provided on the first circuit board 23, and the second light source unit 31 is controlled by a second control unit 35 provided on the second circuit board 32. Is done.
Thereby, 2nd LED33 and 3rdLED34 can be controlled and various light distribution control can be performed.

Further, the light from the first light source unit 22 is irradiated through the globe 40 supported by the instrument body 20.
On the other hand, the second light source unit 31 is provided at a position where the light emitted from the second light source unit 31 does not pass through the globe 40.
For this reason, it can avoid that the light from the 2nd light source part 31 becomes dark by transmitting the globe 40. FIG.

  Furthermore, in the second light source unit 31, since the light flux of the third LED 34 is higher than the light flux of the second LED 33, the brightness can be changed by combining the light of different light fluxes.

(Second Embodiment)
Next, the LED lighting fixture of 2nd Embodiment is demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in LEDA lighting fixture 10A of 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIG. 4, in the LED lighting apparatus 10 </ b> B of the second embodiment, the second light source unit 31 is attached to the upper surface 302 of the frame 30 upward.

For this reason, the light emitted from the second LED 33 and the third LED 34 of the second light source unit 31 is irradiated upward and is reflected by the ceiling 11 to indirectly illuminate the lower part.
Thereby, it can illuminate with soft light.
In addition, since the 2nd light source part 31 is connected with the 1st circuit board 23 with the harness 36, it can change and change the direction and arrangement | positioning of the 2nd light source part 31, and, therefore, the freedom degree of lamp design Can be improved.

(Third embodiment)
Next, the LED lighting fixture of 3rd Embodiment is demonstrated.
In addition, the same code | symbol shall be attached | subjected to the site | part which is common in LED lighting fixture 10A of 1st Embodiment mentioned above, or LED lighting fixture 10B of 2nd Embodiment, and the overlapping description shall be abbreviate | omitted.
As shown in FIG. 5, in the LED lighting apparatus 10 </ b> C of the third embodiment, the second light source unit 31 is attached to the frame 30 outward.

For this reason, the light emitted from the second LED 33 and the third LED 34 of the second light source unit 31 is irradiated toward the side, hits the ceiling 11 or a wall (not shown), and is reflected to indirectly illuminate the room.
Thereby, it can illuminate with soft light. Further, it is possible to directly irradiate a specific illumination target such as an emergency exit.
In addition, since the 2nd light source part 31 is connected with the 1st circuit board 23 by the harness 36, it can change the direction of the 2nd light source part 31, and can be attached easily.

The LED lighting apparatus of the present invention is not limited to the above-described embodiments, and appropriate modifications and improvements can be made.
For example, in each of the above-described embodiments, the first light source unit and the second light source unit are referred to. However, the present invention also includes an LED lighting apparatus including the third light source unit and the fourth light source unit.
Moreover, the present invention includes, for example, a wall-mounted luminaire other than the ceiling luminaire attached to the ceiling.

10A, 10B, 10C LED lighting fixture 20 fixture body 22 first light source 23 first circuit board 24 first LED
241 1st circuit 26 Power supply part 28 1st control part 31 2nd light source part 32 2nd circuit board 33 2nd LED
331 Second circuit 34 Third LED
341 Third circuit 35 Second control unit 40 Globe

Claims (4)

An instrument body;
A power supply unit housed in the instrument body;
A first light source unit housed in the instrument body and having a first LED mounted on a first circuit board;
A second light source part in which a second LED and a third LED are mounted on a second circuit board housed in the instrument body and electrically connected to the first circuit board,
Wherein together with the 2LED and the second 3LED are different types each Ri said first light source unit and the second light source unit is exclusively illuminable der each other,
The LED lighting fixture whose luminous flux of said 3rd LED is higher than the luminous flux of said 2nd LED . In the LED lighting fixture of Claim 1,
The first light source unit has a first circuit for lighting the first LED,
The second light source unit includes a second circuit for lighting the second LED and a third circuit for lighting the third LED,
The LED lighting apparatus in which the drive current of the second circuit and the drive current of the third circuit are different from each other. In the LED lighting fixture of Claim 1 or Claim 2,
The first light source unit has a first control unit on the first circuit board,
The second light source unit is an LED lighting apparatus having a second control unit on the second circuit board. In the LED lighting fixture of any one of Claim 1- Claim 3,
A glove that is supported by the instrument body and transmits light from the first light source unit;
The second light source unit is an LED lighting apparatus provided at a position where light does not pass through the globe.

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