JP7291977B2 - lighting equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a lighting device using an LED substrate as a light-emitting substrate, and is suitable for, for example, a lighting device mounted on a ceiling.

As a light emitting source used for lighting, a light emitting diode (hereinafter referred to as LED (Light Emitting Diode)) has attracted attention as a light emitting element, and an LED substrate having a plurality of LED elements arranged on the substrate has been developed as a light emitting substrate. Lighting devices using such LED substrates have been developed and are rapidly becoming popular. Some of such lighting devices have a so-called dimming function for adjusting the state of light. Dimming of lighting devices is often performed by receiving wireless signals, as described in Patent Document 1 below, for example. In Patent Document 1, a planar wireless antenna is attached to a reflector to constitute a lighting device with a dimming function.

Japanese Unexamined Patent Application Publication No. 2006-80007

In the lighting device with a dimming function as described above, if the position of the antenna with respect to the wireless module for receiving the wireless signal from the indoor side is uniquely fixed, the antenna arrangement in the lighting device will match the wireless module arrangement. However, the flexibility and degree of freedom of antenna tuning is poor due to the limited dependence on the antenna.

The present invention has been made with a focus on the above-mentioned problems, and is advantageous in ensuring the sensitivity of wireless communication even when an LED substrate is used as the light-emitting substrate and the antenna is embedded in the wireless module. It is an object of the present invention to provide a lighting device capable of

In order to solve the above problems, according to one aspect of the present invention, a plurality of LED substrates on which a plurality of LED elements are arranged, and a plate-like plate made of a square metal on one side of which the LED substrates are arranged are arranged. a heat sink, a power supply unit provided on the back surface side of the heat sink opposite to the one surface, and a wireless module provided on the back surface side of the heat sink, wherein the wireless module performs wireless communication A wireless circuit board having a function, an antenna, and a case accommodating the wireless circuit board and the antenna, wherein the case accommodates the wireless circuit board and is arranged on the back side of the heat sink. and an antenna case portion that houses at least part of the antenna and that is provided so that the portion housing the antenna protrudes from the body, wherein the heat sink comprises the antenna A lighting device is provided, wherein an antenna insertion hole is provided through which only a case portion is inserted, and the antenna insertion hole is positioned between the plurality of LED substrates.

In the lighting device of the present invention, since the antenna insertion hole through which the antenna is inserted is located between the plurality of LED substrates, it is advantageous in ensuring the sensitivity of wireless communication.

1 is an exploded perspective view of a square lighting device showing a first embodiment of the lighting device of the present invention; FIG. FIG. 2 is an exploded perspective view of a wireless module used in the lighting device of FIG. 1; FIG. 2 is a schematic diagram showing an example of antenna arrangement within a case of a wireless module used in the lighting device of FIG. 1; (a) is a schematic diagram showing a basic example of antenna arrangement. (b) is a schematic diagram showing an example of antenna arrangement in which the length of the antenna wire is adjusted. (c) is a schematic diagram showing an antenna arrangement example in which the length of the antenna wire is adjusted and the positions of the base point of the antenna and the end of the antenna are exchanged. 3 is a perspective view of a state in which the wireless module of FIG. 2 is attached to the lighting device of FIG. 1; FIG. Fig. 5 is a cross-sectional view of the lighting device of Fig. 4; 2 is a plan view of the side opposite to the indoor side of the heat sink of the lighting device of FIG. 1. FIG. FIG. 7 is a plan view of the heat sink of FIG. 6 in which a wireless module is arranged in a first direction; FIG. 7 is a plan view of the heat sink of FIG. 6 in which the wireless module is arranged in the second direction; It is a top view of the indoor side and the other side of the heat sink 5 in the modification of the illuminating device of FIG. FIG. 5 is an exploded perspective view of a grid-type lighting device showing a second embodiment of the lighting device of the present invention; 10B is an exploded perspective view showing an LED unit of the lighting device of FIG. 10A; FIG. FIG. 10B is a schematic diagram showing an example of antenna arrangement in a wireless module used in the LED unit of FIG. 10B; FIG. 12 is a schematic diagram showing an example of antenna arrangement in a wireless module showing an example of antenna arrangement different from that of the wireless module of FIG. 11; 12B is an exploded perspective view of the wireless module of FIG. 12A; FIG. 12B is a schematic diagram showing an example of antenna arrangement in which the length of the antenna wire of the wireless module of FIG. 12A is adjusted; FIG. 12B is a schematic diagram showing an antenna arrangement example in which the length of the antenna wire of the wireless module of FIG. 12A is adjusted and the positions of the antenna base point and the antenna end are exchanged; FIG. FIG. 15 is a perspective view of the LED unit of FIG. 10B attached with any one of the wireless modules of FIGS. 11 to 14; FIG. 15 is a plan view of the LED unit of FIG. 10B to which any one of the wireless modules of FIGS. 11 to 14 is attached; FIG. 17 is a cross-sectional view of the LED unit of FIG. 16; 12 is a schematic diagram showing another example of antenna arrangement within the case of the wireless module of FIG. 11; FIG. FIG. 19 is a perspective view of the LED unit of FIG. 10B attached with the wireless module of any one of FIGS. FIG. 20 is a cross-sectional view of the LED unit of FIG. 19;

The embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention. are not specific to the following: Various modifications can be made to the technical idea of the present invention within the technical scope defined by the claims.

<First embodiment>
EMBODIMENT OF THE INVENTION Below, it demonstrates, referring drawings for 1st Embodiment of the illuminating device of this invention.
(Square type lighting device)
FIG. 1 is an exploded perspective view of a lighting device 1 according to the first embodiment. The illuminating device 1 according to the first embodiment is a square-type illuminating device that has a rectangular flat plate shape when viewed from the inside of the room. The illumination device 1 according to the first embodiment is used, for example, by being attached to a ceiling position, and the lower part of the drawing corresponds to the indoor side. The illumination device 1 includes an LED unit 2, which is an example of a light-emitting unit, and a fixture body 3 that accommodates the LED unit 2 and is attached to a mounting portion such as a ceiling.

The LED unit 2 includes a housing 10 including a substantially plate-shaped heat sink 5 made of rectangular metal and side walls 10a made of resin or metal, a plurality of LED substrates 6 provided on the indoor side surface of the heat sink 5, and the heat sink 5. An LED lighting device 7 provided on the side opposite to the indoor side, a reflective sheet 8 provided on the indoor side of the plurality of LED boards 6, and a transparent panel provided on the indoor side of the reflective sheet 8 to cover the plurality of LED boards 6. A light cover panel 9 and a frame portion 18 connected to the housing 10 and supporting the cover panel 9 are provided.
As the metal forming the heat sink 5, for example, aluminum, stainless steel, or the like can be used.

As shown in FIG. 1, each of the plurality of LED substrates 6 is a long single LED substrate, and LED elements 4 are mounted in two rows in the longitudinal direction of the substrate. The light-emitting portion of the LED unit 2 is formed by arranging a plurality of LED substrates 6 in the width direction so that many rows of the LED elements 4 are arranged in parallel.
The reflective sheet 8 is arranged on the indoor side of the LED substrates 6 and is formed in a rectangular shape sized to cover all the LED substrates 6 attached to the heat sink 5 . An LED exposure hole 8a, which is a hole, is formed. When the LED substrate 6 and the reflection sheet 8 are superimposed on each other, the LED elements 4 and the LED exposure holes 8a are located at the same positions, and the LED elements 4 are exposed to the indoor side through the LED exposure holes 8a.
When the LED substrate 6 and the reflection sheet 8 are attached to the heat sink 5, they are in a superimposed state.

In the first embodiment, the heat sink 5 has a bottom surface 5c on which the LED substrate 6 is placed, and a side surface 5b that is bent from the end of the bottom surface 5c and extends into the room. A certain antenna insertion hole 5a is formed. The antenna insertion hole 5a is located in a gap between the LED boards 6 arranged in the width direction. In addition to the LED exposure hole 8a, the reflection sheet 8 arranged on the indoor side of the LED board 6 also has a through hole having the same shape as the antenna insertion hole 5a at a position corresponding to the antenna insertion hole 5a. An antenna insertion hole 8b is formed.
The antenna insertion hole 5a and the antenna insertion hole 8b will be described later.

Moreover, the heat sink 5 forms a rectangular housing 10 by attaching side walls 10a made of resin or metal. The housing 10 has a bottom surface on the side opposite to the indoor side and an opening on the indoor side. A cover panel 9 is attached so as to cover the interior-side opening of the housing 10 . An LED lighting device 7 is attached to the central portion of the side surface of the heat sink 5 which is the bottom surface of the housing 10 and is opposite to the indoor side. The LED lighting device 7 accommodates a power supply circuit that distributes power supplied from an external power supply to the lighting device 1 via an F cable or the like to a plurality of LED substrates 6, and a plurality of LED lighting devices mounted on each LED substrate 6. It has a light emission state changing function for changing the light emission state of the LED element 4 . Examples of changing the light emission state include toning, dimming, extinguishing, and lighting.

Furthermore, the lighting device 1 according to the first embodiment receives a wireless signal including an instruction to change the light emitting state transmitted from, for example, a smartphone or a tablet terminal inside the room, and turns on the LED according to the received signal. A wireless module 12 is provided for transmitting signals to the device 7 to change the lighting state. The wireless module 12 may be connected to the LED lighting device 7 by at least one of wired connection and wireless connection. Moreover, it may be detachable from the lighting device 1 .
The LED lighting device 7 changes the light emission state of the plurality of LED elements 4 mounted on the LED board 6 according to the signal transmitted from the wireless module 12 .

(wireless module)
FIG. 2 is an exploded perspective view of the wireless module 12 according to the first embodiment. This wireless module 12 includes a wireless circuit board 14 on which elements for wireless communication are mounted in a resin case 13, and a shield for preventing the elements on the wireless circuit board 14 from being affected by noise. It has a member 15 , a connector 16 to which a connection harness for the LED lighting device 7 is connected, and a rod-shaped antenna 17 electrically connected to elements on the wireless circuit board 14 and extending from the wireless circuit board 14 .

A well-known radio circuit technology can be used for the radio circuit board 14 . The shield member 15 may be made of metal such as stainless steel, or may be a sheet or the like in which filler is dispersed to improve antenna sensitivity. Further, the antenna 17 can be folded back and its length can be adjusted by cutting or the like. For example, the antenna 17 is a flexible antenna capable of maintaining its shape to the extent that it can stand on its own without support.

In the first embodiment, the case 13 has an antenna case 13a that can accommodate at least a portion of the antenna 17, and a main body portion 13b that accommodates the radio circuit board . Antenna case 13 a is formed to protrude from body portion 13 b of case 13 . In this case, the body portion 13b of the case 13 may be made of metal, and only the antenna case 13a may be made of resin.

FIG. 3 is a schematic diagram showing an example of antenna arrangement within the case 13 of the wireless module 12 used in the illumination device 1 of FIG. This wireless module 12 is attached substantially parallel to the heat sink 5 which is the bottom surface of the housing 10 .
As shown in FIG. 3(a), in the first embodiment, the antenna 17 basically has an antenna base point 17a located inside the body portion 13b of the case 13, and an antenna end portion 17b located inside the antenna case 13a. are arranged to
As another antenna arrangement example, as shown in FIG. 3B, the length of the antenna wire may be adjusted so that the antenna end portion 17b is also positioned inside the main body portion 13b of the case 13. .
Further, as shown in FIG. 3(c), the length of the antenna wire may be adjusted within the body portion 13b of the case 13, and the positions of the antenna base point 17a and the antenna end portion 17b may be exchanged.
In this way, since the antenna 17 adjusts the reception sensitivity of radio signals, the position of the antenna 17 can be arbitrarily adjusted with respect to the radio circuit board 14 with the feeding point as a base point.

(Relationship between lighting device and wireless module)
4 is a perspective view of a state in which the wireless module 12 of FIG. 2 is attached to the lighting device of FIG. 1, and FIG. 5 is a sectional view of the lighting device of FIG. The wireless module 12 is attached to the opposite side of the heat sink 5 from the indoor side, like the LED lighting device 7, by inserting the antenna case 13a into the antenna insertion hole 5a of the heat sink 5 and the antenna insertion hole 8b of the reflection sheet 8. It is
In the first embodiment, the main body portion 13b of the case 13 of the wireless module 12 is arranged on the side opposite to the indoor side with respect to the heat sink 5, and the antenna case 13a has the antenna insertion hole 5a of the heat sink 5 and the antenna insertion hole of the reflection sheet 8. 8b is inserted to protrude into the room. As a result, the antenna 17 of the wireless module 12 is arranged on the indoor side of the heat sink 5 .
For example, when a radio signal is transmitted from the indoor side, if there is a metallic or conductive article near the antenna 17, especially on the indoor side of the antenna 17, the radio signal is absorbed by the metallic article, and the antenna 17 wireless signal reception sensitivity may be reduced.
In the lighting device 1 according to the first embodiment, by arranging the antenna 17 of the wireless module 12 closer to the indoor side than the heat sink 5, it is possible to prevent the wireless signal from being absorbed by the substantially plate-like heat sink 5 made of metal. , it is possible to easily and reliably ensure the reception sensitivity of radio signals from the indoor side.

FIG. 6 is a plan view of the side opposite to the indoor side of the heat sink 5 according to the first embodiment. FIG. 7 is a plan view of the heat sink 5 of FIG. 6 with the wireless module 12 arranged in the first direction. FIG. 8 is a plan view of the heat sink 5 of FIG. 6 with the wireless module 12 arranged in the second direction.

As shown in FIG. 6, the heat sink 5 is formed with an antenna insertion hole 5a, which is a slit-shaped through hole, near the LED lighting device 7 along the longitudinal direction of the LED lighting device 7. As shown in FIG. The antenna end portion 17b should be placed on the indoor side by inserting the antenna insertion hole 5a.

For example, as shown in FIG. 7, on the side opposite to the indoor side of the heat sink 5, the antenna case 13a is closer to the LED lighting device 7 than the body portion 13b of the case 13. You may attach the wireless module 12 along. In this case, the main body portion 13b of the case 13 is separated from the LED lighting device 7 having the power supply circuit more than the antenna case 13a.

Alternatively, as shown in FIG. 8, on the side opposite to the indoor side of the heat sink 5, the main body portion 13b of the case 13 is closer to the LED lighting device 7 than the antenna case 13a. You may attach the wireless module 12 along. In this case, the antenna case 13a is spaced apart from the main body portion 13b of the case 13 with respect to the LED lighting device 7 having the power supply circuit.

In the first embodiment, as shown in FIGS. 7 and 8, it is possible to attach the wireless module 12 to the side of the heat sink 5 opposite to the indoor side in consideration of the distance between the LED lighting device 7 and the antenna case 13a. be. As a result, a wireless module 12 that employs a suitable antenna arrangement example among those shown in FIGS. Then, the mounting direction of the wireless module 12 can be determined as shown in FIG. 7 or FIG. Therefore, the flexibility and freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

The instrument body 3 has a rectangular recess surrounded by a bottom surface and side walls. This recess is a space for accommodating the LED unit 2 . When the LED unit 2 is housed in this recess, for example, a spring receiving metal fitting is attached to the engaging portion facing the inside of the recess. Moreover, on the outer side surface of the heat sink 5 of the LED unit 2, a spring metal fitting is attached so that the two arm portions spread laterally and in opposite directions by the elastic force of the spring. When the LED unit 2 is accommodated in the recess of the fixture main body 3 in a state in which the spring receiving metal fitting and the spring metal fitting are attached to a predetermined position and the back surface of the heat sink 5 of the LED unit 2 faces the recess of the fixture main body 3, the spring metal fitting is installed. The two arms spread laterally due to their elastic force and are engaged with the spring receiving metal fittings. As a result, the LED unit 2 is accommodated and fixed in the recess of the fixture body 3 . Since the LED unit 2 can be attached to and detached from the fixture main body 3 by widening or narrowing the two arm portions of the spring fitting, for example, each LED unit 2 can be replaced.

(Effect of the first embodiment)
As described above, in the illumination device 1 according to the first embodiment, the LED substrates 6 on which the LED elements 4 are mounted in rows in the prescribed direction are arranged so that the rows of the LED elements 4 are arranged in parallel. A metal heat sink 5 large enough to cover the LED elements 4 is arranged on the opposite side of the LED substrate 6 from the indoor side. A wireless module 12 that receives wireless signals from the indoor side has a rod-shaped antenna 17 inside an antenna case 13a. Then, the main body portion 13b of the case 13 of the wireless module 12 is arranged on the opposite side of the heat sink 5 from the inside of the room so that the antenna 17 is arranged on the indoor side of the heat sink 5 . As a result, the antenna 17 is spaced from the heat sink 5 made of metal toward the indoor side, which is advantageous in ensuring the reception sensitivity of radio signals from the indoor side. Furthermore, since the position of the antenna 17 can be arbitrarily adjusted with respect to the LED lighting device 7 and the wireless module 12, the flexibility and degree of freedom in adjusting the antenna when installing the lighting device 1 is dramatically improved.

(Modification)
FIG. 9 is a plan view of the side surface opposite to the indoor side of the heat sink 5 of the modification according to the first embodiment. In the heat sink 5 of the modified example, many candidates for the antenna insertion hole 5a are prepared.
All of these candidates for the antenna insertion hole 5a may be opened in advance. Alternatively, it may be prepared in advance in a completely closed state, and only a portion selected from these candidates may be opened and used as the antenna insertion hole 5a.
As a result, the flexibility and degree of freedom of the wireless module 12 are dramatically improved, so that the flexibility and degree of freedom in adjusting the antenna when installing the lighting device can be further dramatically improved.

<Second embodiment>
Next, a second embodiment of the illumination device of the present invention will be described with reference to the drawings.
(grid type lighting device)
FIG. 10A is an exploded perspective view showing the lighting device 1 according to the second embodiment. 10B is an exploded perspective view showing the LED unit 2 of the illumination device 1 of FIG. 10A. The illumination device 1 according to the second embodiment is a long rectangular grid-type illumination device attached between a pair of two bars arranged in the ceiling. In addition, in 2nd Embodiment, although the shape differs with respect to the illuminating device 1 which concerns on 1st Embodiment, the structural member which has an equivalent function is provided. Therefore, the same reference numerals are given to constituent members having equivalent functions. For example, similarly to the lighting device 1 according to the first embodiment, the lighting device 1 according to the second embodiment is used by being attached to a ceiling position, for example, and the lower part of the drawing corresponds to the indoor side. This illumination device 1 also includes an LED unit 2 and a fixture body 3 that accommodates the LED unit 2 and is attached to a mounting portion.

Similarly to the LED unit 2 according to the first embodiment, the LED unit 2 according to the second embodiment includes a substantially plate-shaped heat sink 5 made of metal and a plurality of LED substrates 6 provided on the indoor side surface of the heat sink 5. , an LED lighting device 7 provided on the side opposite to the indoor side of the heat sink 5, a reflective sheet 8 provided on the indoor side of the plurality of LED substrates 6, and a plurality of LEDs provided on the indoor side of the reflective sheet 8 A translucent cover panel 9 covering the substrate 6 is provided. Note that the LED lighting device 7 of the lighting device 1 according to the second embodiment also accommodates a power supply circuit and has a light emission state changing function, like the lighting device 1 according to the first embodiment.

Two rows of LED elements 4 are mounted on the elongated LED substrate 6 so as to form rows in the longitudinal direction of the substrate. In the second embodiment, the light-emitting portion is formed by arranging two LED substrates 6 in the width direction so that four rows of LED elements 4 are arranged in parallel. A reflective sheet 8 disposed on the indoor side of the LED substrates 6 is formed in a rectangular shape sized to cover all the LED substrates 6 attached to the heat sink 5, and has a large number of through holes through which the LED elements 4 pass. ing. The LED substrate 6 and the reflective sheet 8 are attached to a substantially plate-like heat sink 5 made of rectangular metal and large enough to cover all the LED elements 4 . The heat sink 5 according to the second embodiment forms a housing 10 by being attached to a rectangular frame made of resin. This housing 10 has a bottom surface on the side opposite to the indoor side, and an opening on the indoor side. On the other hand, a cover panel 9 is attached so as to cover the interior-side opening of the housing 10 .

An LED lighting device 7 is attached to the central portion of the side surface of the heat sink 5 opposite to the indoor side, which is the bottom surface of the housing 10 , and spring receiving members 11 are attached to both ends of the heat sink 5 in the longitudinal direction. The spring receiving member 11 is configured to hook a spring hanging down from the fixture main body 3 fixed to the ceiling. When pushed up, the spring engages with the spring receiving member 11 to fix the LED unit 2 to the fixture main body 3 .

(wireless module)
FIG. 11 is a schematic diagram showing an example of antenna arrangement in the wireless module 12 used in the LED unit 2 of FIG. 10B. FIG. 12A is a schematic diagram showing an example of antenna arrangement in the wireless module 12 showing an example of antenna arrangement different from that of the wireless module 12 of FIG. 12B is an exploded perspective view of the wireless module of FIG. 12A. FIG. 13 is a schematic diagram showing an example of antenna arrangement in which the length of the antenna wire of the wireless module of FIG. 12A is adjusted. FIG. 14 is a schematic diagram showing an example of antenna arrangement in which the length of the antenna wire of the wireless module of FIG. 12A is adjusted and the positions of the antenna base point 17a and the antenna end portion 17b are exchanged.
As shown in FIG. 12B, the wireless module 12 according to the second embodiment is basically similar to the wireless module 12 according to the first embodiment. a wireless circuit board 14, a shield member 15 for preventing the elements on the wireless circuit board 14 from being affected by noise, a connector 16 to which a connection harness for connecting the LED lighting device 7 is connected, It has a rod-shaped antenna 17 electrically connected to elements on the radio circuit board 14 and extending from the radio circuit board 14 .

As shown in FIGS. 11, 12A, 12B, 13 and 14, in the wireless module 12 according to the second embodiment, the antenna case 13a is not present inside the main body 13b of the case 13. , an antenna housing groove 13c is provided. Here, an antenna case 13a is provided along a first side of a body portion 13b of a rectangular case 13, and an antenna housing groove 13c is provided along a second side opposite to the first side. there is

As shown in FIG. 11, in the second embodiment, basically, similarly to the first embodiment, the antenna base point 17a of the antenna 17 is located inside the body portion 13b of the case 13, and the antenna end portion 17b is located inside the antenna body portion 13b. It is arranged so as to be located inside the case 13a. In this case, an antenna arrangement example similar to that of the first embodiment as shown in FIG. 3 can be applied.

Further, as shown in FIGS. 12A, 12B, 13 and 14, the antenna 17 may be arranged along the antenna housing groove 13c inside the main body portion 13b of the case 13. FIG. In this case, the antenna case 13a is not used at all.

For example, as shown in FIGS. 12A and 12B, the antenna 17 may be arranged along the antenna housing groove 13c so as to be accommodated within the body portion 13b of the case 13. FIG.
Further, as shown in FIG. 13, by adjusting the length of the antenna wire, the antenna base point 17a is located in the middle of the portion of the antenna housing groove 13c that is spaced apart from and substantially parallel to the antenna case 13a. The end portion 17b may be positioned in the middle of the portion of the antenna housing groove 13c substantially orthogonal to the antenna case 13a.
Further, as shown in FIG. 14, the length of the antenna wire may be adjusted in the body portion 13b of the case 13, and the positions of the antenna base point 17a and the antenna end portion 17b may be exchanged. That is, the antenna base point 17a is positioned in the middle of the portion of the antenna housing groove 13c substantially orthogonal to the antenna case 13a, and the antenna end portion 17b is spaced apart from and substantially parallel to the antenna case 13a in the antenna housing groove 13c. It may be located in the middle of the large portion.
Here, from the viewpoint of securing the radio signal reception sensitivity of the antenna 17, the antenna housing groove 13c preferably has an opening at a location where the antenna end 17b is positioned.
Also, although not shown, it is possible to dispose the antenna 17 in both the antenna case 13a and the antenna housing groove 13c.
In this way, since the antenna 17 adjusts the reception sensitivity of radio signals, the position of the antenna 17 can be arbitrarily adjusted with respect to the radio circuit board 14 with the feeding point as a base point.

Further, in the wireless module 12 according to the second embodiment, one side of the cover-shaped case 13 is open, and the body portion 13b of the case 13 is only on one side. and small thickness.

(Relationship between lighting device and wireless module)
15 is a perspective view of the LED unit 2 of FIG. 10B to which the wireless module 12 of any one of FIGS. 11 to 14 is attached, and FIG. 16 is the LED unit 2 of FIG. 17 is a cross-sectional view of the LED unit 2 of FIG. 16. FIG. In the second embodiment, the wireless module 12 is attached to the outside of the housing 10 across the side wall 10a, which is the side opposite to the side where the LED board 6 is located. In addition, the side wall 10a of the housing 10 is provided with a folded wall 10b that is folded back from the inside of the room to the bottom side of the housing 10 on the outside thereof. 15 and 17 is attached to the housing 10 to support the cover panel 9. As shown in FIG.
In the second embodiment, the wireless module 12 is attached between the side wall 10a and the folded wall 10b of the housing 10, for example, on the "outer wall" of the side wall 10a of the housing 10 or the "inner wall" of the folded wall 10b. That is, the wireless module 12 is attached “outside” the side wall 10a of the housing 10 and “inside” the folded wall 10b.
Specifically, as shown in FIGS. 15 to 17, between the side wall 10a and the folded wall 10b of the housing 10, a concave portion extending in the longitudinal direction of the main body and recessed toward the inside of the room is formed. A wireless module 12 having a small thickness is fitted into the recess from the side opposite to the inner side.

When installing the wireless module 12 in the recess, it is optional whether the antenna 17 is closest to the indoor side or closest to the side opposite to the indoor side, that is, is the farthest from the indoor side. Therefore, in the second embodiment, as in the first embodiment, according to the actual measurement value of the reception sensitivity of the wireless signal when the lighting device 1 is installed, the antenna arrangement examples shown in FIGS. It is possible to select a wireless module 12 that employs one, and determine the mounting direction of that wireless module 12 . Therefore, the flexibility and freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

The fixture main body 3 of the second embodiment can be diverted from existing equipment, and may be the same as the fixture main body of the existing grid-type lighting device. Also, although the external shape is different, the mounting method of the LED unit 2 can be the same as that of the fixture main body 3 of the first embodiment.

(Effect of Second Embodiment)
As described above, in the illumination device 1 according to the second embodiment, the antenna 17 of the wireless module 12 is arranged outside the metal heat sink 5 when viewed from the inside of the room. is advantageous in ensuring Furthermore, since the position of the antenna 17 can be arbitrarily adjusted with respect to the LED lighting device 7 and the wireless module 12, the flexibility and degree of freedom in adjusting the antenna when installing the lighting device 1 is dramatically improved.

(Modification)
FIG. 18 is a schematic diagram showing another antenna arrangement example within the case 13 of the wireless module 12 of FIG. As shown in FIG. 18, in this modification, an antenna housing groove 13c is provided at the inner edge and near the center of the body portion 13b of the case 13 of the wireless module 12. As shown in FIG.
Specifically, the antenna housing groove 13c includes an antenna housing groove 13c1 provided along a first edge parallel to the antenna case 13a and an antenna housing groove 13c1 provided along a second edge opposite to the first edge. It has a housing groove 13c2, and an antenna housing groove 13c3, an antenna housing groove 13c4, and an antenna housing groove 13c5 provided in a direction substantially orthogonal to the antenna housing grooves 13c1 and 13c2.
Here, the antenna housing groove 13c3 and the antenna housing groove 13c4 are arranged in a direction substantially orthogonal to the inner edge of the main body portion 13b of the case 13, for example, the first edge and the second edge so as to face each other. Along the edge and the fourth edge. The antenna housing groove 13c5 is provided near the center inside the body portion 13b of the case 13. As shown in FIG.
The antenna 17 can be arranged as shown in any one of FIGS. In this modification, the antenna 17 is not arranged in the antenna case 13a.
For example, as shown in FIG. 18A, the antenna 17 may be arranged so as to be accommodated in the antenna accommodation groove 13c1 and the antenna accommodation groove 13c4.
Further, as shown in FIG. 18B, the antenna 17 may be arranged so as to be accommodated in the antenna accommodation groove 13c1 and the antenna accommodation groove 13c3.
Further, as shown in FIG. 18(c), the antenna 17 may be arranged so as to be accommodated in the antenna accommodation groove 13c1 and the antenna accommodation groove 13c5.
Further, as shown in FIG. 18(d), the antenna 17 may be arranged so as to be accommodated in the antenna accommodation groove 13c2 and the antenna accommodation groove 13c5.
Note that the illustrated antenna arrangement example is merely an example. Actually, other antenna arrangement examples (not shown) are permitted as long as they can be arranged in the antenna housing groove 13c. If necessary, it is possible to dispose the antenna 17 in all of the antenna housing grooves 13c1 to 13c5.
Further, the positions of the antenna base point 17a and the antenna end portion 17b are omitted from the drawing, but the positions of the antenna base point 17a and the antenna end portion 17b can be interchanged in the same manner as the antenna arrangement example of FIG. and

<Third Embodiment>
(Grid type lighting device)
The lighting device 1 and the LED unit 2 themselves according to the third embodiment are the same as the lighting device 1 and the LED unit 2 according to the second embodiment shown in FIG. 10A.

(wireless module)
The wireless module 12 itself according to the third embodiment is similar to the wireless module 12 according to the second embodiment shown in FIGS. 11 to 14 and the like.

(Relationship between lighting device and wireless module)
19 is a perspective view of the LED unit 2 of FIG. 10B attached with the wireless module 12 of any one of FIGS. 11 to 14 and 18, and FIG. 20 is the LED unit 2 of FIG. is a cross-sectional view of. The third embodiment is similar to the second embodiment in that the wireless module 12 is attached to the outside of the housing 10 on the side opposite to the LED board 6 with the side wall 10a interposed therebetween. In addition, the side wall 10a of the housing 10 is provided with a folded wall 10b that is folded back from the inside of the room to the bottom side of the housing 10 on the outside thereof.
However, in the third embodiment, the wireless module 12 is attached to the "outer wall" of the folded wall 10b of the housing 10, unlike the second embodiment. That is, the wireless module 12 is attached “outside” the folded wall 10 b of the housing 10 .
Specifically, as shown in FIGS. 19 and 20, the wireless module 12 having a small thickness is attached to the outside of the folding wall 10b of the housing 10 from the side opposite to the indoor side.

When attaching the wireless module 12 to the outside of the folding wall 10b of the housing 10, it is optional whether the antenna 17 is closest to the indoor side or closest to the opposite side of the room, that is, is the farthest from the indoor side. be. Therefore, in the third embodiment, as in the second embodiment, according to the actual measurement value of the radio signal reception sensitivity when installing the lighting device 1, the antenna arrangement examples shown in FIGS. 11 to 14 are preferably selected. It is possible to select a wireless module 12 that employs one, and determine the mounting direction of that wireless module 12 . Therefore, the flexibility and freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

(Effect of the third embodiment)
As described above, in the lighting device 1 according to the third embodiment, the antenna 17 of the wireless module 12 is arranged outside the metal heat sink 5 when viewed from the indoor side. is advantageous in ensuring Furthermore, since the position of the antenna 17 can be arbitrarily adjusted with respect to the LED lighting device 7 and the wireless module 12, the flexibility and degree of freedom in adjusting the antenna when installing the lighting device 1 is dramatically improved.

Although the invention has been described with reference to particular embodiments, it is not intended that the invention be limited by these descriptions. Various modifications of the disclosed embodiments, as well as other embodiments of the invention, will be apparent to persons skilled in the art upon reference to the description of the invention. Therefore, the claims should be construed to cover those variations or embodiments that fall within the scope and spirit of the invention.

1 lighting device 2 LED unit 3 fixture body 4 LED element 5 heat sink 5a antenna insertion hole 6 LED substrate 7 LED lighting device 8 reflection sheet 8a LED exposure hole 8b antenna insertion hole 9 cover panel 10 housing 10a side wall 10b folding wall 11 spring receiving member 12 radio module 13 case 13a antenna case 13b main body 13c antenna housing groove 14 radio circuit board 15 shielding member 16 connector 17 antenna , 18 frame

Claims (5)

a plurality of LED substrates on which a plurality of LED elements are arranged;
a plate-like heat sink made of a square metal on one side of which the LED substrate is arranged;
a power supply unit provided on the back surface side opposite to the one surface of the heat sink;
a wireless module provided on the back side of the heat sink;
has
The wireless module is
a wireless circuit board having a wireless communication function;
an antenna extending from the radio circuit board to the one surface ;
a case that houses the wireless circuit board and the antenna;
has
Said case is
a main body housing the radio circuit board and the first portion of the antenna and arranged on the rear surface side of the heat sink;
an antenna case portion that accommodates a second portion of the antenna and is provided so that the portion that accommodates the second portion of the antenna protrudes from the main body portion;
has
The heat sink is provided with an antenna insertion hole through which only the antenna case portion is inserted,
the antenna insertion hole is located between the plurality of LED substrates ,
The wireless circuit board is arranged parallel to the heat sink,
A lighting device characterized by: A base point of the antenna is located on the main body,
an end of the antenna is located in the antenna case;
The lighting device according to claim 1 . The power supply unit has an elongated shape,
The antenna insertion hole is provided along the longitudinal direction of the power supply unit,
The case is attached to the heat sink such that the main body is closer to the power supply than the antenna case is.
3. A lighting device according to claim 1 or 2. Having a harness connected to the power supply unit,
The wireless circuit board has a connector to which the harness is connected,
the main body of the case accommodates the connector therein ;
The lighting device according to any one of claims 1 to 3 . Having a translucent cover panel covering the plurality of LED substrates,
The antenna insertion hole and the antenna case are covered with the cover panel,
The lighting device according to any one of claims 1 to 4 .

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