JP2013062108A - Light-emitting device and lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting device capable of simplifying connection of light-emitting elements themselves and improving uniformity with excellent color mixing, and a lighting device having the light-emitting device.SOLUTION: The light-emitting device is provided with a substrate 21 and light-emitting elements 22 which are mounted on the substrate 21 and are arranged in a plurality of rows having a plurality of emission colors on nearly concentric circles with different radii for every emission color or on the circumferences of polygons of different sizes with a nearly identical center, and are arranged with the positions in a circumference direction shifted for each of these rows, and have the same number of light-emitting elements 22 for each of emission colors.

Description

  Embodiments described herein relate generally to a light-emitting device using a light-emitting element such as a light-emitting diode (hereinafter referred to as LED) as a light source, and an illumination device including the light-emitting device.

  Recently, along with higher output and higher efficiency of LEDs, lighting devices that use LEDs as light sources and can be used indoors or outdoors can be expected. This illuminating device is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined brightness, and is used as, for example, base illumination attached to a ceiling surface or the like.

On the other hand, with the diversification of lifestyles, the functions required of these lighting devices include not only simply illuminating the surroundings brightly, but also considering the influence of the surrounding environment and light on the living body, etc. It is desired to produce an optical space that matches the living scene, such as satisfying comfort.
For this reason, for example, an attempt has been made to improve the rendering performance by sequentially arranging LEDs of a plurality of light emission colors on a substrate and mixing these light colors.

LED Ceiling Light “EVERLEDS” Series Released | Press Releases | News | Panasonic Corporate Information | panasonic [September 5, 2011 Internet Search] (http://panasonic.co.jp/corp/news/official.data/ data.dir / jn110126-2 / jn110126-2.html)

  However, in the above case, there is a possibility that the wiring pattern for connecting the LEDs of a plurality of emission colors on the substrate becomes complicated.

  The present invention has been made in view of the above problems, and a light-emitting device capable of simplifying the connection between light-emitting elements, having good color mixing and improving uniformity, and an illumination equipped with the light-emitting device An object is to provide an apparatus.

  A light-emitting device according to an embodiment of the present invention includes a substrate and a polygonal circumference that is mounted on the substrate and has a plurality of light-emitting colors, each having a substantially concentric circle having a different radius or a center having a different size for each light-emitting color. A plurality of light emitting elements having the same number of light emitting colors and arranged in a plurality of rows and arranged in such a manner that their circumferential positions are shifted from each other are provided.

  According to an embodiment of the present invention, a light-emitting device that can simplify the connection between light-emitting elements and can improve color uniformity and improve uniformity, and an illumination device including the light-emitting device are provided. It becomes possible.

It is a perspective view which shows the illuminating device which concerns on embodiment of this invention. It is a disassembled perspective view of the front side which shows the illuminating device. It is a disassembled perspective view of the back side which shows the illuminating device. In the same illuminating device, it is a top view which shows a shade and a light source part cover removed. It is a perspective view of the back side which shows the illuminating device. It is sectional drawing which shows the state which attached the lighting device to the ceiling surface. It is a top view which shows one board | substrate in a light source part. It is a top view which shows a part of wiring pattern layer of the board | substrate. It is a connection diagram which shows the connection state of a light emitting element.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. 1 to 6 show the lighting device, and FIGS. 7 and 8 show a part of the light source unit. FIG. 9 shows a connection state of the light source unit. In each drawing, the wiring connection relationship using lead wires or the like is omitted. In addition, the same code | symbol is attached | subjected to the same part and the overlapping description is abbreviate | omitted.

  The illuminating device of this embodiment is for a general house that is used by being attached to a hanging sealing body as a wiring device installed on the device mounting surface, and has a plurality of light emitting elements mounted on a substrate. The room is illuminated by light emitted from the section.

  The lighting device includes a device main body 1, a light source unit 2, a lighting device 3, a center member 4, and an attachment unit 5. Furthermore, the lighting device includes an optical sensor 6, a shade 7, a cover member 8, an indirect light source unit 9, and an auxiliary component unit 10. Moreover, the adapter A (refer FIG. 6) and infrared remote control transmitter Rc which are electrically and mechanically connected to the hooking sealing body Cb installed in the ceiling surface C as an apparatus attachment surface are provided. Such an illuminating device is formed in a round and circular appearance, and has a front side as a light irradiation surface and a back side as a mounting surface to the ceiling surface C. These components will be described sequentially.

  As shown in FIGS. 2 to 6, the apparatus main body 1 is a chassis having a thermal conductivity formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel sheet, and a mounting portion described later at a substantially central portion. A circular opening 11 in which 5 is disposed is formed. The opening 11 is formed in a shape that is substantially equal to the outer shape of the mounting portion 5 with a part of a circular shape protruding outward.

  On the outer peripheral side of the opening 11, a projecting portion 12 having a quadrangular shape with a corner portion having an R shape and projecting to the back side is formed. Further, on the outer peripheral side of the apparatus main body 1, a circular annular protruding portion 13 that protrudes on the back side, in other words, forms a concave portion on the front side, is formed.

  In the recess formed by the protruding portion 13, a shade receiving bracket 75 to which the shade 7 is detachably attached is disposed. These protrusions 12 and 13 mainly function as attachment portions of members attached to the chassis, and also have a function of reinforcing the strength of the chassis and a function of increasing the heat radiation area.

  The apparatus main body 1 corresponds to a chassis in this embodiment, but may be referred to as a case, a reflector, or a base. In general, it means a member or a part where the light source unit 2 is directly or indirectly arranged, and is not interpreted in a particularly limited manner.

  As shown in FIGS. 2, 4, and 6, the light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21 to constitute a light emitting device. In addition, illustration of the light emitting element 22 is abbreviate | omitted in FIG. The substrate 21 has a substantially circular arc shape with a predetermined width dimension, and is arranged so that a plurality of, specifically, four substrates 21 having the same shape are joined together. It is formed in a circle shape. That is, the substrate 21 formed in a substantially circle shape as a whole is composed of four divided substrates 21.

By using the substrate 21 thus divided, it is possible to suppress the deformation of the substrate 21 by absorbing thermal contraction at the divided portion of the substrate 21. In addition, the material of the substrate member can be efficiently taken, which is advantageous in terms of cost, and the member is downsized, so that the handling becomes easy. Furthermore, the divided substrate 21 can be shared as a component.
In addition, although it is preferable to use the board | substrate 21 divided | segmented into plurality, you may make it use the board | substrate of 1 sheet integrally formed in the substantially circle shape.

  The board | substrate 21 consists of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and the wiring pattern layer is formed with the copper foil on the surface side. The light emitting element 22 is electrically connected to the wiring pattern layer. Further, a white resist layer acting as a reflective layer is formed on the wiring pattern layer, that is, on the surface of the substrate 21.

  The material of the substrate 21 can be a ceramic material or a synthetic resin material when an insulating material is used. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation can be applied.

  The light emitting element 22 is an LED, which is a surface mount type LED package. A plurality of LED packages are mounted in a plurality of rows along the circumferential direction of the circle-shaped substrate 21, in the present embodiment, in three rows on the circumference of substantially concentric circles having different radii. That is, it is mounted over the inner circumferential row, the outer circumferential row, and an intermediate row between the inner circumferential row and the outer circumferential row.

  The LED package is roughly composed of an LED chip disposed in a cavity formed of ceramics or synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip. It is configured.

  The LED packages mounted on the inner and outer rows are light bulb colors (L) and daylight colors (D), so-called white ones are used. These are arranged alternately on the circumference of substantially concentric circles at substantially equal intervals. The LED chip is an LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to be able to emit white light of light bulb color (L) and daylight color (D), the light-transmitting resin has a complementary color relationship mainly with blue light. Yellow phosphors that emit yellow light and red phosphors are used to supplement reddish components. The so-called white includes daylight color (D), daylight white (N), white (W), light bulb color (L), and the like.

  The LED packages mounted in the middle row use a plurality of light emission colors, specifically, those that emit light in red (R), green (G), and blue (B). Accordingly, the LED chips are LED chips that emit red, green, and blue light, respectively, and these LED chips are sealed with a translucent resin for molding.

  The LED packages that emit light in red (R), green (G), and blue (B) mounted in the middle row are sequentially red, red (R), green (G), and blue (B) in a substantially circular manner. Are arranged at regular intervals. The LED packages that emit red (R), green (G), and blue (B) light are used in the same number of light emission colors, and each light emitting color LED package is divided into one divided substrate 21. Eleven are implemented. Therefore, as a whole, 44 LED packages of each emission color are used.

  Specifically, as shown with reference to FIGS. 7 and 8, the LED packages emitting red (R), green (G), and blue (B) having different emission colors have different radii for each emission color. A plurality of rows (three rows) are arranged on the circumference of a substantially concentric circle, and the positions in the circumferential direction are shifted in each row.

  FIG. 7 shows one of the divided substrates 21, and FIG. 8 shows a part of the wiring pattern layer 12 a of the substrate 21. In FIG. 8, in order to show the positional relationship between the wiring pattern layer 12a and the light emitting element 22, a part of the light emitting element 22 is indicated by a broken line for the sake of explanation.

  As shown in FIG. 7, the LED package that emits red (R), green (G), and blue (B) emits light on a substantially concentric circle having a different radius for each emission color, that is, red (R). The LED package has a radius r1, the LED package that emits green light (G) has a radius r2, and the LED package that emits blue light (B) has a substantially concentric circle with a radius r3. The light emitting elements 22 in the row of LED packages emitting red (R), the row of LED packages emitting green (G), and the row of LED packages emitting blue (B) are positioned in the circumferential direction. They are shifted (indicated by d in the figure).

  The LED package has a substantially rectangular parallelepiped shape, and is provided with an anode-side electrode Ae on one short side and a cathode-side electrode Ce on the other short side. ing. For the sake of explanation, the short side of the cathode-side electrode Ce is indicated by a bold line.

  As shown in FIG. 8, the substrate 21 is formed by laminating a wiring pattern layer 21a on an insulating surface and further laminating a reflective layer 21b thereon. A plurality of surface-mount type LED packages, which are light emitting elements 22, are mounted on the substrate 21.

  The wiring pattern layer 21a has a copper foil pattern formed by etching, and is formed so as to cover substantially the entire surface of the substrate 21. The wiring pattern layer 21a is divided into a plurality of blocks corresponding to the number of mounted light emitting elements 22 by a linear insulating region i, and the anode side electrode Ae and the cathode side electrode Ce of the light emitting element 22 are arranged between the blocks. Are connected across a relatively narrow linear insulating region i.

  The wiring pattern layer 21 a is an electrical conduction path that supplies electric power to the light emitting element 22, and has a function as a heat spreader that diffuses heat generated from the light emitting element 22. Therefore, it is possible to improve heat dissipation by securing the wiring pattern layer 21a with a large area.

The reflective layer 21b is formed over substantially the entire surface except for the portion where each light emitting element 22 is mounted and the electrodes Ae and Ce are connected and the portion where the connector Cn is connected. That is, the portion where each light emitting element 22 is mounted and the electrodes Ae and Ce are connected and the portion where the connector is connected are in a state where the wiring pattern layer 21a is exposed on the surface, and the light emitting element 22 and the connector are connected. Will come to be.
Specifically, the reflective layer 21b is formed using a white photo solder type resist ink material, and is a white resist layer having a good light reflectance.

  Each light-emitting element 22 includes an anode-side electrode Ae and a cathode-side electrode Ce of the light-emitting element 22 across a relatively narrow linear insulating region i between a plurality of blocks partitioned by the linear insulating region i. The wiring pattern layer 21a is soldered and connected.

  More specifically, the area Sc on the wiring pattern layer 21a side to which the cathode electrode Ce is connected is larger than the area Sa on the wiring pattern layer 21a side to which the anode electrode Ae of the light emitting element 22 is connected. It is formed as follows. That is, it is formed so that Sa <Sc.

  In this type, the light-emitting element 22 generates heat mainly on the cathode side during light emission, and the temperature of the cathode-side electrode Ce increases. For this reason, by widening the region Sc on the side of the wiring pattern layer 21a to which the cathode-side electrode Ce is connected, the generated heat is effectively diffused over a wide area and radiated to suppress the temperature rise of the light emitting element 22. It becomes possible to do.

  Therefore, in the LED package with the light emission color (L) and daylight color (D) mounted on the inner circumferential side row, the wiring pattern layer to which the cathode side Ce is connected by alternately changing the direction of the electrodes A wide area Sc on the 21a side is secured.

  On the other hand, in the LED package with the light emission color (L) and daylight color (D) mounted on the outer peripheral side, the cathode-side electrode Ce is arranged facing outward. The outer side tends to have a higher heat dissipation effect than the inner side. For this reason, an improvement in heat dissipation can be expected by directing the cathode-side electrode Ce outward.

  Next, the LED packages that emit light in red (R), green (G), and blue (B) mounted in the middle row are arranged on the circumference of substantially concentric circles having different radii as described above. The positions in the circumferential direction are shifted in each row. For this reason, when LED packages having the same emission color are connected in series as in the present embodiment, the connection, specifically, the wiring pattern layer 21a for connecting the electrodes can be simplified.

  If LED packages that emit light in red (R), green (G), and blue (B) are arranged on the same circumference, it is essential to bend and wire to avoid adjacent LED packages. In this way, an intricate wiring pattern layer is formed.

  However, as in this embodiment, the LED packages of the respective emission colors are arranged on the circumference of substantially concentric circles having different radii by shifting the positions in the circumferential direction. It is possible to connect along the top, that is, in a circular arc shape (substantially straight line), so that the connection can be simplified, and for example, a heat spreader with a predetermined margin in a space-constrained region. It becomes possible to connect while ensuring a large area of the wiring pattern layer 21a functioning as a.

  In addition, as a whole, the LED packages of the respective emission colors are arranged with a predetermined width in the radial direction and are arranged so as to be continuous in the circumferential direction, so that the color mixture is good and the uniformity is improved. Is possible. In addition, with respect to the radial direction, the LED package is arranged so as to be close to the white LED package mounted on the inner and outer rows, so that the effect of improving the light mixture with these can be expected. .

  Further, an area in which a space is secured in the radial direction is generated between the LED package of each light emitting color and the LED package mounted on the inner peripheral row and the outer peripheral row. Spaces can be effectively utilized by arranging components such as the connector Cn.

  The region Sc on the wiring pattern layer 21a side to which the anode-side electrode Ae of the light emitting element 22 is connected and the region Sc on the wiring pattern layer 21a side to which the cathode-side electrode Ce is connected are wide. If it can form in this way, the shape etc. will not be exceptionally limited.

  FIG. 9 shows a connection state of each light emitting element 22 on one substrate 21. Specifically, the light-emitting elements 22 mounted on the inner and outer rows are composed of two lines connected to four series circuits each having six light-emitting elements 22 connected in series. Has been. Therefore, a total of 24 light emitting elements 22 are connected to one line. In addition, these series circuits are connected by being divided into a light emitting element group having a light emission color (L) and a light emitting element group having a daylight color (D). That is, the light emitting elements 22 of the light bulb color (L) and the daylight color (D) are not mixed in one series circuit.

On the other hand, 11 light emitting elements 22 that emit light of red (R), green (G), and blue (B) mounted in the middle row are connected in series. Similarly, red (R), green (G), and blue (B) light emitting elements 22 are not mixed in these series circuits.
The end of such a connection circuit is connected to the connector Cn so that it can be connected to the connector of the adjacent substrate 21 or the connector on the power source side.

  As described above, the light source unit 2 emits a plurality of light emitting elements 22 having different emission colors, that is, light bulb colors (L), daylight colors (D), red (R), green (G), and blue (B). Since the light emitting element 22 is disposed, the range of light colors that can be expressed by mixing these is wide, and the light color can be adjusted by adjusting the light output of the light emitting element 22. Become.

  In addition, LED may be made to mount an LED chip directly on the board | substrate 21, and you may make it mount a bullet-type LED, and a mounting system and a format are not exceptionally limited.

  In the light source unit 2 configured as described above, the substrate 21 is mounted on the front side of the apparatus main body 1 and around the opening 11 as shown in FIGS. The surface is disposed so as to face the front side, that is, the lower irradiation direction. Further, the substrate 21 is attached by a fixing means such as a screw so that the back surface side of the substrate 21 is in close contact with the inner surface side of the apparatus main body 1. Therefore, the substrate 21 is thermally coupled to the apparatus main body 1, and heat from the substrate 21 is conducted from the back side to the apparatus main body 1 to be radiated.

  As shown in FIGS. 2 and 6, a light source unit cover 25 is disposed on the front side of the light source unit 2. The light source cover 25 is made of, for example, a transparent synthetic resin having an insulating property such as polycarbonate or acrylic resin, and is integrally formed in a substantially circle shape along the arrangement of the light emitting elements 22, and includes the light emitting elements 22. Are arranged so as to cover the entire surface of the substrate 21.

  Therefore, the light emitted from the light emitting element 22 passes through the light source unit cover 25. Further, since the entire surface of the substrate 21 is covered, the charging unit is covered with the light source unit cover 25 to ensure insulation.

  As shown in FIGS. 3 and 6, the lighting device 3 includes a circuit board and circuit components such as a control IC, a transformer, and a capacitor mounted on the circuit board. The circuit board is formed in a plate shape so as to surround the center portion, and circuit components are mounted on the surface side thereof.

  The circuit board is electrically connected to the adapter A side, and is connected to a commercial AC power source via the adapter A. Therefore, the lighting device 3 receives this AC power supply, generates a DC output, supplies the DC output to the light emitting element 22 via the lead wire, and controls the lighting of the light emitting element 22.

  Such a lighting device 3 is attached to and covered with the lighting device cover 35 and arranged on the back side of the device body 1 as shown in FIG. In this case, the circuit board is attached with the circuit components facing the front side (the lower side in the drawing).

The lighting device cover 35 is formed in a substantially rectangular short cylinder shape by a metal material such as a cold rolled steel plate, and the side wall 35a is inclined so as to expand toward the front surface side. An opening 35c is formed at the center.
As shown in FIGS. 5 and 6, the lighting device cover 35 is mounted with a front flange mounted on the projecting portion 12 of the chassis and screwed.

  An elastic member 36 is attached to the back side of the lighting device cover 35. The elastic member 36 is attached in the vicinity of the attachment position of each of the plurality of indirect light source units 9. The elastic member 36 is attached with the tip side directed toward the central portion.

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

  As shown in FIGS. 2, 4 and 6, the center member 4 is made of a synthetic resin material such as PBT resin, is formed in a substantially short cylindrical shape, and is hooked at the center to face the sealing body Cb. An opening 41 is provided. An annular space 42 is formed around the opening 41, and the optical sensor 6 described later is disposed in the space 42. Further, a light receiving window 43 that faces the light receiving portion of the optical sensor 6 is formed on the front wall of the center member 4.

  As shown mainly in FIG. 6, the center member 4 configured in this way is attached to the chassis with a flange on the rear side screwed to the chassis via the light source cover 25. The center member 4 can be directly or indirectly attached to the chassis, and its specific attachment configuration is not limited.

  The attachment portion 5 is an adapter guide, a member through which the adapter A is inserted and engaged, and a member for attaching the lighting device to the ceiling surface C. As shown in FIGS. 3 and 6, the adapter guide is formed in a substantially cylindrical shape, and an engagement port 51 through which the adapter A is inserted and engaged is provided at the center. The adapter guide is disposed corresponding to the opening 11 formed in the central portion of the main body 1.

  Note that the attachment portion 5 is not necessarily a member referred to as an adapter guide or the like. For example, it may be an opening formed in the apparatus main body 1 or the like, and in essence, it means a member or part that is opposed to the hooking sealing body Cb as a wiring device and to which the adapter A is engaged.

  As shown in FIG. 6, the optical sensor 6 is mounted on a substrate 61 and is disposed and attached in the space portion 42 of the center member 4 so that the light receiving portion thereof faces the light receiving window 43. The optical sensor 6 is an illuminance sensor, and includes a sensor element such as a photodiode, and operates to detect ambient brightness and output a detection signal. Thereby, when the surroundings are bright, the light source unit 2, that is, the light emitting element 22 is controlled to be dimmed (dimmed) and lit.

  The shade 7 is formed in a substantially circular shape from a material having translucency such as acrylic resin and having a milky white diffusivity, and a circular opening 71 is formed in the central portion. A shade decorative frame 7a is attached to the outer periphery of the shade 7, and the shade decorative frame 7a is formed of a transparent material made of acrylic resin or the like.

  The shade 7 is detachably attached to the outer peripheral edge of the main body 1 so as to cover the front side of the main body 1 including the light source section 2. Specifically, by rotating the shade 7, the shade mounting bracket 74 provided on the shade 7 is engaged with the shade receiving bracket 75 provided in the recess formed by the protruding portion 13 of the apparatus body 1. Can be installed.

  Further, when removing the shade 7, it can be removed by rotating the shade 7 in the direction opposite to that at the time of attachment and releasing the engagement between the shade attachment fitting 74 and the shade receiving fitting 75.

  The cover member 8 is formed in a circular shape from a material such as a transparent acrylic resin. The cover member 8 corresponds to the opening 71 of the shade 7, is attached to the front wall of the center member 4, and is disposed so as to cover and close the opening 41 of the center member 4. The cover member 8 is formed with a transmission portion 81 that faces the light receiving window 43 of the optical sensor 6.

The indirect light source unit 9 is disposed on the back side of the apparatus main body 1 and mainly has a function of illuminating the ceiling surface brightly. As shown in FIGS. 3, 5, and 6, a plurality of indirect light source portions 9 are disposed around the mounting portion 5, and a substrate 91 and a plurality of indirect light source portions 9 mounted on the substrate 91 are disposed. And a light emitting element 92.
The substrate 91 is formed in a substantially rectangular flat plate, and the light emitting elements 92 are mounted in a line along the longitudinal direction of the substrate 91.

  Substrates 91 on which the light emitting elements 92 are mounted are attached to four locations on the side wall 35 a of the lighting device cover 35. In this case, the lighting device cover 35 is formed in a substantially square shape, and the substrate 91 is attached to the linear flat surface of the side wall 35a, so that the attachment is stably performed.

  Further, since the side wall 35a that forms the mounting portion of the substrate 91 is formed in an inclined shape that expands toward the front side, the substrate 91 is directed obliquely upward, that is, in the ceiling surface direction, and the light emitting element The light emitted from 92 is effectively irradiated toward the ceiling surface direction.

  Furthermore, as shown mainly in FIG. 6, each indirect light source section 9 is covered with a translucent cover 93 formed in an inclined shape so that its cross section expands toward the back side. . For this reason, when the lighting device is attached to the ceiling surface C and the side portion of the lighting device is viewed from below, it is possible to make it difficult to visually recognize the elastic member 36 attached to the back side of the lighting device cover 35. Become.

  Further, the cover 93 is formed and disposed in an inclined manner so that the back side of the substrate 21 does not cover the corresponding part of the apparatus body 1 from the outside. Therefore, it is possible to suppress the heat dissipation action from the apparatus main body 1 from being inhibited.

  The light emitting element 92 is an LED, like the light source unit 2, and is a surface mount type LED package, and the light emitting color is a light bulb color (L). The light emitting element 92 has the same specifications as the light emitting element 22 that emits light of the light bulb color (L) of the light source unit 2. The light emitting element 92 is connected to the lighting device 3 and is controlled to be turned on.

  As shown in FIGS. 2 to 4 and 6, the auxiliary component unit 10 includes a unit substrate 101 and a plurality of electrical auxiliary components mounted on the substrate 101. The electrical auxiliary components in this embodiment are an infrared remote control signal receiving unit 102, a night light emitting element 103, a channel setting switch 104, and the like. The auxiliary component unit 10 is disposed on the front side of the apparatus main body 1 and inside the light source unit 2.

  By the way, the unit substrate 101 of the auxiliary component unit 10 is a separate substrate from the substrate 61 on which the optical sensor 6 is mounted. The substrate 61 on which the optical sensor 6 is mounted includes an infrared remote control signal receiving unit 102 and a nightlight. The light emitting element 103 is not mounted. The reason is that the optical sensor 6 has a function of automatically detecting the ambient brightness and automatically controlling the light emitting state of the light emitting element 22. This is because it is easy to realize provision of two types of lighting devices with lighting devices that are not provided.

  That is, when developing an illumination device that does not have a function of automatically controlling the light emission state, the light sensor 6 and the center member 4 can be easily omitted.

  As shown in FIG. 6, the adapter A is electrically and mechanically connected to a hooking sealing body Cb installed on the ceiling surface C by a hooking blade provided on the upper surface side, and has a substantially cylindrical shape. A pair of locking portions A1 are provided on both sides of the peripheral wall so as to always protrude to the outer peripheral side by a built-in spring. The locking portion A1 is immersed by operating a lever provided on the lower surface side. Further, a power cord (not shown) connected to the lighting device 3 is led out from the adapter A, and is connected to the lighting device 3 via a connector.

  The infrared remote control transmitter Rc transmits, for example, a specific coded infrared remote control signal in the form of a pulse having a frequency of 38 kHz. For example, a mode switching button, an all-light button, a dimming button, a nightlight button, An off button is provided. By operating the remote control transmitter Rc toward the auxiliary component unit 10, that is, the infrared remote control signal receiving unit 102, the illumination state of the light source unit 2 and the indirect light source unit 9 can be controlled.

Next, the attachment state to the ceiling surface C of an illuminating device is demonstrated with reference to FIG. First, the adapter A is electrically and mechanically connected to the hanging sealing body Cb installed on the ceiling surface C in advance. With the cover member 8 of the illuminating device removed, the apparatus main body 1 is held until the engaging portion 51 of the adapter A is securely engaged with the engaging port 51 of the adapter guide while the engaging port 51 of the adapter guide is aligned with the adapter A. The mounting operation is performed by pushing up the elastic member 36 manually from below against the elastic force of the elastic member 36.
Next, the cover member 8 is attached, and the cover member 8 is closed and covered with the opening 41 in the center portion of the center member 4 facing the hooking sealing body Cb.

  Further, when removing the lighting device, the cover member 8 is removed, and the lever provided on the adapter A is operated through the opening 41 of the center member 4 to disengage the engaging portion A1 of the adapter A to remove it. be able to.

  When power is supplied to the lighting device 3 in a state where the lighting device is attached to the ceiling surface C, the light emitting elements 22 are energized through the substrate 21 in the light source unit 2, and each light emitting element 22 is lit. The light emitted from the light emitting element 22 to the front side is transmitted through the light source cover 25, diffused by the shade 7, and transmitted to be emitted outward. Therefore, the lower part is illuminated within a predetermined light distribution range.

  At the same time, when the indirect light source unit 9 is energized, each light emitting element 92 is turned on, and the light emitted obliquely upward from the light emitting element 92 is transmitted through the translucent cover 93 and the adapter guide 5 The ceiling surface is mainly irradiated so as to be emitted from the surroundings. Therefore, the ceiling surface becomes bright and the feeling of brightness in the space can be improved.

  The heat generated from the light emitting element 22 is effectively conducted to the apparatus main body 1 and is dissipated over a wide area because the back side of the substrate 21 is thermally coupled to the apparatus main body 1.

  As described above, according to the present embodiment, the LED packages of a plurality of emission colors that emit red (R), green (G), and blue (B) are arranged on the circumference of substantially concentric circles having different radii. The positions in the circumferential direction are shifted in each row. For this reason, it becomes possible to simplify the connection between the light emitting elements 22, and to provide an illuminating device capable of improving color uniformity and improving uniformity.

  In the above embodiment, a plurality of light emitting elements 22 that emit red (R), green (G), and blue (B) light are arranged in a plurality of rows on the circumference of substantially concentric circles having different radii. However, it may be arranged in a polygon having different sizes, for example, arranged in a plurality of rows on the circumference of a hexagon and shifted in the circumferential direction between these rows. .

  Further, the light emitting elements 22 that emit white light are mounted in a row on the outer circumference and the inner side of the rows of the light emitting elements 22 of the plurality of light emitting colors and on the circumference of a polygon that is substantially the same as the polygon. You may make it do. Even in such a form, the same effect as described above can be obtained.

  The present invention is not limited to the configuration of the embodiment described above, and various modifications can be made without departing from the spirit of the invention. Moreover, the said embodiment is shown as an example and is not intending limiting the range of invention.

DESCRIPTION OF SYMBOLS 1 ... Apparatus main body (chassis), 2 ... Light source part,
3 ... lighting device, 4 ... center member,
5 ... Mounting part (adapter guide), 6 ... Optical sensor,
7 ... sade, 8 ... cover member,
9 ... Indirect light source unit, 10 ... Auxiliary component unit,
21 ... substrate, 22 ... light emitting element (LED),
25 ... light source cover,
A ... Adapter, C ... Device mounting surface (ceiling surface),
Cb ... Wiring device (hook ceiling body), Rc ... Infrared remote control transmitter

Claims (3)

A substrate;
A plurality of luminescent colors mounted on a substrate and arranged in a plurality of rows on a circumference of a polygon having substantially the same concentric circles with different radii or different sizes for each of the luminescent colors. The same number of light-emitting elements as the respective emission colors, which are arranged with their circumferential positions shifted from each other;
A light-emitting device comprising:   Emits white light that is arranged outside and inside the row of the light emitting elements of the plurality of light emitting colors and arranged in a row on the circumference of a circle or polygon having substantially the same center as the circle or polygon. The light emitting device according to claim 1, further comprising: A light emitting device according to claim 1 or 2;
A lighting device for controlling lighting of the light emitting element in the light emitting device;
An illumination device comprising:

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