JP6760633B2 - Lighting device - Google Patents

Description

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 at a ceiling position.

A light emitting diode (hereinafter, LED (Light Emitting Diode)) is attracting attention as a light emitting element as a light emitting source used for illumination, and an LED substrate in which a plurality of LED elements are arranged on the substrate has been developed as a light emitting substrate. Then, a lighting device using such an LED substrate has been developed and is rapidly spreading. Some such lighting devices have a so-called dimming function that adjusts the state of light. Dimming of a lighting device is often performed by receiving a radio signal, for example, as described in Patent Document 1 below. In Patent Document 1, a planar wireless antenna is attached to a reflector to form a lighting device having a dimming function.

Japanese Unexamined Patent Publication No. 2006-80007

In the above-mentioned lighting device with a dimming function, 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 becomes the wireless module arrangement. Since it depends only on the antenna, there is a problem that the flexibility and freedom of antenna adjustment are reduced.

The present invention has been made by paying attention to the above-mentioned problems, and it is advantageous to secure the reception sensitivity of the wireless signal even when the LED substrate is used as the light emitting substrate and the antenna is built in the wireless module. It is an object of the present invention to provide a lighting device capable of being used.

In order to solve the above problems, according to one aspect of the present invention, the LED substrate on which the LED element is arranged, the box-shaped housing whose bottom surface is the surface on which the LED substrate is located, and the bottom surface of the housing are opposite to each other. It has a power supply unit located on the back side, which is the side, and a receiving module having a receiving function, which is also located on the back side. Further, it is electrically connected to the receiving module and is positioned with respect to the receiving module. A lighting device is provided characterized in that an optionally adjustable antenna is arranged.

In the lighting device of the present invention, even when an LED substrate is used as the light emitting substrate and an antenna is built in the wireless module, it is advantageous in ensuring the reception sensitivity of the wireless signal.

It is an exploded perspective view of the square type lighting apparatus which shows 1st Embodiment of the lighting apparatus of this invention. It is an exploded perspective view of the wireless module used for the lighting apparatus of FIG. It is a schematic diagram which shows the antenna arrangement example in the case of the wireless module used for the lighting apparatus of FIG. (A) is a schematic diagram showing a basic antenna arrangement example. (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 view showing an example of antenna arrangement in which the length of the antenna wire is adjusted and the positions of the antenna base point and the antenna end are exchanged. It is a perspective view of the state which attached the wireless module of FIG. 2 to the lighting apparatus of FIG. It is sectional drawing of the lighting apparatus of FIG. It is a top view of the side surface opposite to the indoor side of the heat sink of the lighting device of FIG. It is a top view in the state which the wireless module is arranged in the 1st direction on the heat sink of FIG. It is a top view in the state which the wireless module is arranged in the 2nd direction on the heat sink of FIG. It is a top view of the side surface opposite to the indoor side of the heat sink 5 in the modification of the lighting apparatus of FIG. It is an exploded perspective view of the grid type lighting apparatus which shows the 2nd Embodiment of the lighting apparatus of this invention. It is an exploded perspective view which shows the LED unit of the lighting apparatus of FIG. 10A. It is a schematic diagram which shows the antenna arrangement example in the wireless module used for the LED unit of FIG. 10B. It is a schematic diagram which shows the antenna arrangement example in the wireless module which shows the antenna arrangement example different from the wireless module of FIG. It is an exploded perspective view of the wireless module of FIG. 12A. It is a schematic diagram which shows the antenna arrangement example which adjusted the length of the antenna wire of the wireless module of FIG. 12A. It is a schematic diagram which shows the antenna arrangement example which adjusted the length of the antenna wire of the wireless module of FIG. 12A, and exchanged the position of the antenna base point and the antenna end part. It is a perspective view of the state in which any of the wireless modules of FIGS. 11 to 14 is attached to the LED unit of FIG. 10B. It is a top view of the state which attached any of the wireless modules of FIGS. 11 to 14 to the LED unit of FIG. 10B. It is sectional drawing of the LED unit of FIG. It is a schematic diagram which shows the other antenna arrangement example in the case of the wireless module of FIG. FIG. 5 is a perspective view showing a state in which the wireless module of any of FIGS. 11 to 14 and 18 is attached to the LED unit of FIG. 10B in the third embodiment of the lighting device of the present invention. It is sectional drawing of the LED unit of FIG.

The embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention includes materials, shapes, structures, arrangements, etc. of components. Is not specified as the following. The technical idea of the present invention can be modified in various ways within the technical scope specified by the claims stated in the claims.

<First Embodiment>
The first embodiment of the lighting device of the present invention will be described below with reference to the drawings.
(Square type lighting device)
FIG. 1 is an exploded perspective view of the lighting device 1 according to the first embodiment. The lighting device 1 according to the first embodiment is a flat plate-shaped square lighting device that is square when viewed from the indoor side. The lighting device 1 according to the first embodiment is used by being attached to, for example, a ceiling position, and the lower part of the figure corresponds to the indoor side. The lighting device 1 includes an LED unit 2 which is an example of a light emitting unit, and an instrument main body 3 which accommodates the LED unit 2 and is attached to a mounted portion such as a ceiling.

The LED unit 2 includes a housing 10 including a substantially plate-shaped heat sink 5 made of square metal and a side wall 10a made of resin or metal, a plurality of LED substrates 6 provided on the indoor side surface of the heat sink 5, and a 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 substrates 6, and a transparent sheet provided on the indoor side of the reflective sheet 8 to cover the plurality of LED substrates 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 two rows of LED elements 4 are mounted so as to form a row in the longitudinal direction of the substrate. Then, a plurality of LED substrates 6 are arranged in the width direction so that a large number of rows of the LED elements 4 are arranged in parallel to form a light emitting portion of the LED unit 2.
Further, the reflective sheet 8 is arranged on the indoor side of the LED substrate 6, is formed in a square shape having a size covering all the LED substrates 6 attached to the heat sink 5, and penetrates at a position corresponding to each LED element 4. An LED exposed hole 8a, which is a hole, is formed. When the LED substrate 6 and the reflective sheet 8 are overlapped with each other, the LED element 4 and the LED exposed hole 8a are at the same position, and the LED element 4 is exposed to the indoor side from the LED exposed hole 8a.
When the LED substrate 6 and the reflective sheet 8 are attached to the heat sink 5, they are in a superposed 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 to the indoor side, and the bottom surface 5c has a through hole. A certain antenna insertion hole 5a is formed. The antenna insertion holes 5a are located in the gaps between the LED substrates 6 arranged in the width direction. Further, the reflective sheet 8 arranged on the indoor side of the LED substrate 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, in addition to the LED exposure hole 8a described above. The antenna insertion hole 8b is formed.
The antenna insertion hole 5a and the antenna insertion hole 8b will be described later.

Further, the heat sink 5 is formed with a rectangular housing 10 by attaching a side wall 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. Then, the cover panel 9 is attached so as to cover the indoor opening of the housing 10. Further, the LED lighting device 7 is attached to the central portion of the side surface opposite to the indoor side of the heat sink 5, which is the bottom surface of the housing 10. The LED lighting device 7 accommodates a power supply circuit that distributes power supplied from an external power source to the lighting device 1 via an F cable or the like to a plurality of LED boards 6, and is mounted on each LED board 6. It has a light emitting state changing function for changing the light emitting state of the LED element 4. Examples of changing the light emitting state include toning, dimming, extinguishing, and lighting.

Further, the lighting device 1 according to the first embodiment receives a radio signal including an instruction for changing the light emitting state transmitted from, for example, a smartphone or tablet terminal on the indoor side, and turns on the LED according to the received signal. The device 7 is provided with a wireless module 12 for transmitting a signal for changing the light emitting state. The wireless module 12 may be connected to the LED lighting device 7 by at least one of wired and wireless. Further, it may be detachable from the lighting device 1.
The LED lighting device 7 changes the light emitting state of the plurality of LED elements 4 mounted on the LED substrate 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. The wireless module 12 is a shield for preventing the wireless circuit board 14 on which an element for wireless communication is mounted and the element on the wireless circuit board 14 from being affected by noise in a resin case 13. It has a connector 16 to which a harness for connecting the member 15 and the LED lighting device 7 is connected, and a rod-shaped antenna 17 that is electrically connected to an element on the wireless circuit board 14 and extends from the wireless circuit board 14.

A well-known wireless circuit technique can be used for the wireless circuit board 14. Further, the shield member 15 may be a metal such as stainless steel, or may be a sheet or the like in which a filler is dispersed in order to improve the 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 that can maintain 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 capable of accommodating at least a part of the antenna 17, and a main body portion 13b accommodating the wireless circuit board 14. The antenna case 13a is formed so as to project from the main body 13b of the case 13. In this case, the main body 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 view showing an example of antenna arrangement in the case 13 of the wireless module 12 used for the lighting device 1 of FIG. The wireless module 12 is mounted substantially parallel to the heat sink 5 which is the bottom surface of the housing 10.
As shown in FIG. 3A, in the first embodiment, basically, in the antenna 17, the antenna base point 17a is located in the main body 13b of the case 13, and the antenna end 17b is located in the antenna case 13a. It is arranged to do.
As another example of antenna arrangement, as shown in FIG. 3B, the antenna end 17b may also be located inside the main body 13b of the case 13 by adjusting the length of the antenna wire. ..
Further, as shown in FIG. 3C, the length of the antenna wire may be adjusted and the positions of the antenna base point 17a and the antenna end portion 17b may be exchanged in the main body portion 13b of the case 13.
In this way, in order to adjust the reception sensitivity of the wireless signal, the position of the antenna 17 can be arbitrarily adjusted with respect to the wireless circuit board 14 with the feeding point as the base point.

(Relationship between lighting equipment and wireless modules)
FIG. 4 is a perspective view of the lighting device of FIG. 1 with the wireless module 12 of FIG. 2 attached, and FIG. 5 is a cross-sectional view of the lighting device of FIG. The wireless module 12 is attached to the side surface of the heat sink 5 opposite to the indoor side in the same manner as the LED lighting device 7 so that the antenna case 13a is inserted into the antenna insertion hole 5a of the heat sink 5 and the antenna insertion hole 8b of the reflection sheet 8. Has been done.
In the first embodiment, the main body 13b of the case 13 in 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 is the antenna insertion hole 5a of the heat sink 5 and the antenna insertion hole of the reflection sheet 8. 8b is inserted and protrudes to the indoor side. 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 wireless signal is transmitted from the indoor side, if there is a metal, that is, a conductive article, in the vicinity of the antenna 17, particularly on the indoor side of the antenna 17, the wireless signal is absorbed by the metal article, and the antenna 17 The reception sensitivity of the radio signal may decrease.
In the lighting device 1 according to the first embodiment, by arranging the antenna 17 of the wireless module 12 on the indoor side of the heat sink 5, it is possible to prevent the wireless signal from being absorbed by the substantially plate-shaped heat sink 5 made of metal. It is possible to easily and surely secure the reception sensitivity of the wireless signal from the indoor side.

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

As shown in FIG. 6, in the heat sink 5, an antenna insertion hole 5a, which is a slit-shaped through hole, is formed in the vicinity of the LED lighting device 7 along the longitudinal direction of the LED lighting device 7. It suffices that the antenna end 17b is arranged on the indoor side by inserting the antenna insertion hole 5a.

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

Alternatively, as shown in FIG. 8, in the longitudinal direction of the LED lighting device 7 so that the main body 13b of the case 13 is closer to the LED lighting device 7 than the antenna case 13a on the side surface opposite to the indoor side of the heat sink 5. The wireless module 12 may be attached along the above. In this case, the antenna case 13a is separated from the main body 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, the wireless module 12 can be mounted on the side surface 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. is there. As a result, the wireless module 12 that employs the most suitable antenna arrangement example shown in FIGS. 3A to 3C is selected according to the measured value of the reception sensitivity of the wireless signal when the lighting device 1 is installed. Then, as shown in FIG. 7 or 8, the direction in which the wireless module 12 is attached can be determined. Therefore, the flexibility and the degree of 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 a side wall. 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 a locking portion facing the inside of the recess. Further, a spring fitting is attached to the outer side surface of the heat sink 5 of the LED unit 2 so that the two arm portions expand in the lateral direction and in opposite directions due to the elastic force of the spring. When the spring bracket and the spring bracket are attached at a predetermined position and the LED unit 2 is housed in the recess of the appliance body 3 with the back surface of the heat sink 5 of the LED unit 2 facing the recess of the appliance body 3, the spring bracket The two arm portions expand laterally by elastic force and are locked to the spring receiving metal fittings. As a result, the LED unit 2 is housed and fixed in the recess of the instrument body 3. Since the LED unit 2 can be attached to and detached from the instrument main body 3 by expanding or narrowing the two arm portions of the spring metal fitting in the lateral direction, for example, each LED unit 2 can be replaced.

(Effect of the first embodiment)
As described above, in the lighting device 1 according to the first embodiment, the LED substrates 6 on which the LED elements 4 are mounted are arranged in rows in a predetermined direction so that the rows of the LED elements 4 are arranged in parallel. A metal heat sink 5 having a size covering the LED element 4 of the above is arranged on the side opposite to the indoor side with respect to the LED substrate 6. The wireless module 12 that receives the wireless signal from the indoor side has a rod-shaped antenna 17 mounted in the antenna case 13a. Then, the antenna 17 is arranged closer to the room than the heat sink 5, and the main body 13b of the case 13 in the wireless module 12 is arranged at a position opposite to the indoor side with respect to the heat sink 5. As a result, the antenna 17 is separated from the metal heat sink 5 on the indoor side, which is advantageous in ensuring the reception sensitivity of the radio signal from the indoor side. Further, 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 the degree of freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

(Modification example)
FIG. 9 is a plan view of the side surface of the heat sink 5 of the modified example according to the first embodiment, which is opposite to the indoor side. In the heat sink 5 of the modified example, a large number of candidates for the antenna insertion hole 5a are prepared.
All of the candidates for the antenna insertion holes 5a may be opened in advance. Alternatively, it may be prepared in a state in which all of them are closed in advance, 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 the degree of freedom of the wireless module 12 are dramatically improved, so that the flexibility and the degree of freedom of antenna adjustment when installing the lighting device can be further dramatically improved.

<Second Embodiment>
Next, a second embodiment of the lighting 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. FIG. 10B is an exploded perspective view showing the LED unit 2 of the lighting device 1 of FIG. 10A. The lighting device 1 according to the second embodiment is a rectangular long grid type lighting device mounted between two pairs of bars arranged in the ceiling. In the second embodiment, the lighting device 1 according to the first embodiment is provided with a component having the same function even if the shape is different. Therefore, the same reference numerals are given to the components having the same functions. For example, the lighting device 1 according to the second embodiment is also used by being attached to, for example, a ceiling position, like the lighting device 1 according to the first embodiment, and the lower part of the figure corresponds to the indoor side. The lighting device 1 also includes an LED unit 2 and an instrument main body 3 that accommodates the LED unit 2 and attaches the LED unit 2 to the attached portion.

Similar to the LED unit 2 according to the first embodiment, the LED unit 2 according to the second embodiment also has 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 that covers the substrate 6 is provided. The LED lighting device 7 of the lighting device 1 according to the second embodiment also accommodates the power supply circuit and has a light emitting state changing function, like the lighting device 1 according to the first embodiment.

Two rows of LED elements 4 are mounted on the long LED substrate 6 so as to form a row in the longitudinal direction of the substrate. Then, in the second embodiment, the light emitting portion is formed by arranging the two LED substrates 6 in the width direction so that the rows of the LED elements 4 are arranged in parallel in four rows. The reflective sheet 8 arranged on the indoor side of the LED substrate 6 is formed in a square shape having a size covering all the LED substrates 6 attached to the heat sink 5, and a large number of through holes through which the LED element 4 penetrates are formed. ing. The LED substrate 6 and the reflective sheet 8 are attached to a substantially plate-shaped heat sink 5 made of a square metal having a size that covers all the LED elements 4. The heat sink 5 according to the second embodiment is attached to a frame made of a square resin to form a housing 10. The 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, the cover panel 9 is attached so as to cover the indoor opening of the housing 10.

Further, 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 opposite to the indoor side, 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 from the appliance main body 3 fixed to the ceiling, and the LED unit 2 is placed on the ceiling side in a state where the spring is hooked on the spring receiving member 11. When pushed up, the spring is locked to the spring receiving member 11 and the LED unit 2 is fixed to the instrument body 3.

(Wireless module)
FIG. 11 is a schematic view showing an example of antenna arrangement in the wireless module 12 used for the LED unit 2 of FIG. 10B. FIG. 12A is a schematic view 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 view 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 view 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 17b are exchanged.
As shown in FIG. 12B, the wireless module 12 according to the second embodiment also basically has an element for wireless communication mounted in the resin case 13 like 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, and a connector 16 to which a harness for connecting the LED lighting device 7 is connected. It has a rod-shaped antenna 17 that is electrically connected to an element on the wireless circuit board 14 and extends from the wireless 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 separately located in the main body 13b of the case 13 at a position where the antenna case 13a does not exist. , The antenna accommodating groove 13c is provided. Here, the antenna case 13a is provided along the first side of the main body 13b of the square case 13, and the antenna accommodating groove 13c is provided along the second side facing the first side. There is.

As shown in FIG. 11, in the second embodiment as well, basically, as in the first embodiment, the antenna base point 17a is located in the main body 13b of the case 13, and the antenna end 17b is the antenna. It is arranged so as to be located in the case 13a. In this case, the same antenna arrangement example as in 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 accommodating groove 13c in the main body 13b of the case 13. 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 so as to fit in the main body 13b of the case 13 along the antenna accommodating groove 13c.
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 accommodating groove 13c that is separated and substantially parallel to the antenna case 13a. The end portion 17b may be located in the middle of the portion of the antenna accommodating groove 13c that is substantially orthogonal to the antenna case 13a.
Further, as shown in FIG. 14, the length of the antenna wire may be adjusted and the positions of the antenna base point 17a and the antenna end portion 17b may be exchanged in the main body portion 13b of the case 13. That is, the antenna base point 17a is located in the middle of the portion of the antenna accommodating groove 13c that is substantially orthogonal to the antenna case 13a, and the antenna end 17b is separated and substantially parallel to the antenna case 13a of the antenna accommodating groove 13c. It may be located in the middle of the antenna.
Here, the antenna accommodating groove 13c preferably has an opening at a position where the antenna end portion 17b is located, from the viewpoint of ensuring the reception sensitivity of the radio signal of the antenna 17.
Further, although not shown, it is also possible to arrange the antenna 17 in both the antenna case 13a and the antenna accommodating groove 13c.
In this way, in order to adjust the reception sensitivity of the wireless signal, the position of the antenna 17 can be arbitrarily adjusted with respect to the wireless circuit board 14 with the feeding point as the base point.

Further, the wireless module 12 according to the second embodiment is compared with the wireless module 12 according to the first embodiment because one of the cover-shaped cases 13 is open and the main body 13b of the case 13 has only one side. And the thickness is small.

(Relationship between lighting equipment and wireless modules)
15 is a perspective view of the LED unit 2 of FIG. 10B with any of the wireless modules 12 of FIGS. 11 to 14 attached, and FIG. 16 is any of FIGS. 11 to 14 of the LED unit 2 of FIG. 10B. A plan view of the state in which the wireless module 12 is attached, FIG. 17 is a cross-sectional view of the LED unit 2 of FIG. In the second embodiment, the wireless module 12 is attached to the outside of the housing 10 on the side opposite to the side on which the LED substrate 6 is located, with the side wall 10a of the housing 10 interposed therebetween. The side wall 10a of the housing 10 is provided with a folded wall 10b that is folded back from the indoor side to the bottom surface side of the housing 10 on the outside thereof. The frame portion 18 in FIGS. 15 and 17 is attached to the housing 10 to support the cover panel 9.
In the second embodiment, the wireless module 12 is attached between the side wall 10a of the housing 10 and the folded wall 10b, for example, 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, a recess is formed between the side wall 10a of the housing 10 and the folded wall 10b, which is elongated in the longitudinal direction of the main body and is recessed on the indoor side. The wireless module 12 having a small thickness is fitted into the recess from the side opposite to the inside.

When the wireless module 12 is mounted in the recess, it is arbitrary whether the antenna 17 is closest to the indoor side or the side opposite to the indoor side, that is, the farthest from the indoor side. Therefore, also in the second embodiment, as in the first embodiment, the antenna arrangement examples shown in FIGS. 11 to 14 are preferable according to the measured value of the reception sensitivity of the radio signal when the lighting device 1 is installed. It is possible to select a wireless module 12 that employs a new one and determine the direction in which the wireless module 12 is attached. Therefore, the flexibility and the degree of freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

As for the fixture main body 3 of the second embodiment, the existing equipment can be diverted and may be the same as the fixture main body of the existing grid type lighting device. Further, although the appearance 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 the second embodiment)
As described above, in the lighting device 1 according to the second embodiment, since the antenna 17 of the wireless module 12 is arranged outside the metal heat sink 5 when viewed from the indoor side, the reception sensitivity of the wireless signal from the indoor side It is advantageous in securing. Further, 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 the degree of freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

(Modification example)
FIG. 18 is a schematic view showing another antenna arrangement example in the case 13 of the wireless module 12 of FIG. As shown in FIG. 18, in this modified example, the antenna accommodating groove 13c is provided at the inner edge and the vicinity of the center of the main body 13b of the case 13 of the wireless module 12.
Specifically, the antenna accommodating groove 13c includes an antenna accommodating groove 13c1 provided along a first edge parallel to the antenna case 13a and an antenna provided on a second edge facing the first edge. It has an accommodation groove 13c2, an antenna accommodation groove 13c3 provided in a direction substantially orthogonal to the antenna accommodation groove 13c1 and the antenna accommodation groove 13c2, an antenna accommodation groove 13c4, and an antenna accommodation groove 13c5.
Here, the antenna accommodating groove 13c3 and the antenna accommodating groove 13c4 are a third in a direction substantially orthogonal to the inner edge of the main body 13b of the case 13, for example, the first edge and the second edge so as to face each other. It is provided along the edge and the fourth edge. The antenna accommodating groove 13c5 is provided near the center inside the main body 13b of the case 13.
The antenna 17 can be arranged with respect to such an antenna accommodating groove 13c as shown in any of FIGS. 18A to 18D. 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 accommodating groove 13c1 and the antenna accommodating groove 13c4.
Further, as shown in FIG. 18B, the antenna 17 may be arranged so as to be accommodated in the antenna accommodating groove 13c1 and the antenna accommodating groove 13c3.
Further, as shown in FIG. 18C, the antenna 17 may be arranged so as to be accommodated in the antenna accommodating groove 13c1 and the antenna accommodating groove 13c5.
Further, as shown in FIG. 18D, the antenna 17 may be arranged so as to be accommodated in the antenna accommodating groove 13c2 and the antenna accommodating groove 13c5.
The illustrated antenna arrangement example is only an example. Actually, if it can be arranged in the antenna accommodating groove 13c, other antenna arrangement examples (not shown) are allowed. If necessary, the antenna 17 can be arranged in all of the antenna accommodating grooves 13c1 to the antenna accommodating groove 13c5.
Further, although the positions of the antenna base point 17a and the antenna end portion 17b are not shown, the positions of the antenna base point 17a and the antenna end portion 17b can be interchanged as in the antenna arrangement example of FIG. And.

<Third Embodiment>
(Grid type lighting device)
The lighting device 1 and the LED unit 2 itself 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 the same as the wireless module 12 according to the second embodiment shown in FIGS. 11 to 14 and the like.

(Relationship between lighting equipment and wireless modules)
19 is a perspective view showing a state in which the wireless module 12 of any of FIGS. 11 to 14 and 18 is attached to the LED unit 2 of FIG. 10B in the third embodiment, and FIG. 20 is a perspective view of the LED unit 2 of FIG. It is a cross-sectional view of. The third embodiment is also the same as the second embodiment in that the wireless module 12 is attached to the outside of the housing 10 on the side opposite to the side where the LED substrate 6 is located, with the side wall 10a of the housing 10 interposed therebetween. The side wall 10a of the housing 10 is provided with a folded wall 10b that is folded back from the indoor side to the bottom surface side of the housing 10 on the outside thereof.
However, in the third embodiment, unlike the second embodiment, the wireless module 12 is attached to the "outer wall" of the folded wall 10b of the housing 10. That is, the wireless module 12 is attached "outside" of the folded wall 10b 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 folded wall 10b of the housing 10 from the side opposite to the indoor side.

When the wireless module 12 is attached to the outside of the folded wall 10b of the housing 10, it is optional whether the antenna 17 is closest to the indoor side or the side opposite to the indoor side, that is, the farthest from the indoor side. is there. Therefore, also in the third embodiment, as in the second embodiment, the antenna arrangement examples shown in FIGS. 11 to 14 are preferable according to the measured value of the reception sensitivity of the radio signal when the lighting device 1 is installed. It is possible to select a wireless module 12 that employs a new one and determine the direction in which the wireless module 12 is attached. Therefore, the flexibility and the degree of freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

(Effect of Third Embodiment)
As described above, in the lighting device 1 according to the third embodiment, since the antenna 17 of the wireless module 12 is arranged outside the metal heat sink 5 when viewed from the indoor side, the reception sensitivity of the wireless signal from the indoor side It is advantageous in securing. Further, 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 the degree of freedom of antenna adjustment when installing the lighting device 1 are dramatically improved.

Although the present invention has been described above with reference to specific embodiments, it is not intended to limit the invention by these explanations. By referring to the description of the present invention, other embodiments of the present invention will be apparent to those skilled in the art as well as various variations of the disclosed embodiments. Therefore, it should be understood that the scope of claims also covers these modifications or embodiments included in the scope and gist of the present invention.

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

Claims (5)

An LED substrate on which LED elements are arranged and
A box-shaped housing whose bottom surface is the surface on which the LED substrate is located,
A power supply unit located on the back surface side opposite to the bottom surface of the housing,
A receiving module located on the back surface side of the housing and having a receiving function,
An antenna that is electrically connected to the receiving module
A case that houses the antenna and
Have,
The case is provided with a plurality of grooves for accommodating the antenna, and by selectively accommodating the antenna in at least one of the plurality of grooves, the position of the antenna with respect to the receiving module can be adjusted. A lighting device characterized by being <br />. A through hole is provided on the bottom surface.
The lighting device according to claim 1, wherein at least a part of the antenna is located in the through hole. The lighting device according to claim 1, wherein the receiving module is located on the outer side of the side wall of the housing, which is opposite to the side on which the LED substrate is located. The side wall is provided with a folded wall that is folded back toward the bottom surface on the outside of the side wall.
The lighting device according to claim 3, wherein the receiving module is located in an accommodation space formed by the side wall and the folded wall. The lighting device according to claim 4, wherein the antenna is separated from the receiving module with respect to the power supply unit.

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