WO2015019854A1

WO2015019854A1 - Lighting device

Info

Publication number: WO2015019854A1
Application number: PCT/JP2014/069511
Authority: WO
Inventors: 篤司山下
Original assignee: シャープ株式会社
Priority date: 2013-08-09
Filing date: 2014-07-24
Publication date: 2015-02-12

Abstract

The purpose of the present invention is to provide a lighting device which can be adjusted to a required light output corresponding to the size of a room while achieving the uniformalization of light-emitting modules. To this end, a lighting device is provided with a plurality of light-emitting modules in which a plurality of light-emitting diodes are mounted on a substrate, and the light-emitting modules are of a plurality of types, and are configured such that the number of mounted light-emitting diodes differs from type to type.

Description

Lighting device

The present invention relates to an illuminating device, and more particularly to an illuminating device including a light emitting module having a light emitting diode mounted on a substrate.

In recent years, light emitting diodes (LEDs) have attracted attention as light sources for lighting devices. The LED has a configuration in which white LEDs are arranged to emit white light, or a configuration in which LEDs of three colors of R (red), G (green), and B (blue) are arranged to mix these light emission to obtain white light. There is something. In addition, the white LED includes a method of obtaining white light by combining a phosphor with a short wavelength LED and a method of obtaining white light by combining a phosphor with a blue LED.

On the other hand, conventional fluorescent lamps and incandescent lamps have the following problems. Fluorescent lamps require a high voltage when lit. In addition, if lighting and extinguishing of the fluorescent lamp are repeated in a complicated manner, the lifetime is shortened. Incandescent lamps have very high power consumption and short life.

On the other hand, an illumination device using LEDs as described above can be driven at a lower voltage than fluorescent lamps, and has superior performance such as low power consumption and long life. In addition, an illuminating device using an LED is characterized in that white light is obtained from wavelengths close to the three primary colors of light, so that the degree of freedom in color design is higher than that of a fluorescent lamp or an incandescent lamp. That is, it is possible to freely adjust the white point (white color) such as a light bulb color and a daylight color.

Next, a configuration example of a lighting device using LEDs will be given. Patent Document 1 discloses a lighting fixture in which a plurality of LED modules having a light output of 700 to 1300 lm are arranged. Patent Document 2 discloses a lighting fixture in which a long light emitting module having a slit is deformed into an annular shape or a spiral shape in accordance with the shape of the lighting fixture.

JP 2012-204020 A JP 2013-38018 A

Here, according to the display standard of the number of tatami mats applied to the LED ceiling light established by the Japan Lighting Equipment Manufacturers Association, the ranges of the standard fixture luminous flux and the rated luminous flux according to the size of the room are shown. When the applicable tatami number rank is ~ 4.5 tatami (about 7 m ² ), the standard instrument luminous flux is 2700 lm and the rated luminous flux range is 2200 to less than 3200 lm, and when the applied tatami number rank is ~ 6 tatami (about 10 m ² ) 3200 lm, rated luminous flux range is 2700 or more and less than 3700 lm, applicable tatami number rank is ~ 8 tatami (about 13 m ² ), standard instrument luminous flux is 3800 lm, rated luminous flux range is 3300 or more and less than 4300 lm, applicable tatami number rank is ~ 10 tatami (about 17m ²⁾ standard instrument light flux 4900lm less than the range of the rated luminous flux 3900 or more 4400Lm, applying tatami number of ranks is ~ 12 tatami mats (about 20 m ²⁾ in the range of the rated luminous flux over 4500 standard instrument light flux with 5000lm 5500lm less than, apply tatami number of ranks is to 14 tatami mats (about 23m ²⁾ range of the rated luminous flux in the standard instrument light beam by 5600lm There has been less than 5100 more than 6100lm.

However, in the lighting fixture of Patent Document 1, since the minimum value of the light output of one LED module is 700 lm, the light output cannot be adjusted at 700 lm or less, and illumination is performed for each applicable tatami number rank of the display standard. We cannot provide equipment.

Moreover, in the lighting fixture of patent document 2, since one kind of light emitting module is used and the light output can be adjusted only in units of one light emitting module, a lighting fixture is provided for each applicable tatami number rank of the display standard. It is not possible.

An object of the present invention is to provide an illuminating device that can be adjusted to a necessary light output according to the size of a room while sharing a light emitting module.

In order to achieve the above object, the present invention provides a lighting device including a plurality of light emitting modules each including a plurality of light emitting diodes mounted on a substrate, wherein the light emitting modules include a plurality of types, and the number of the light emitting diodes mounted for each type. Are different from each other.

According to the present invention, a plurality of types of light emitting modules with different numbers of mounted light emitting diodes are used in appropriate combinations, so that the light output modules can be shared (standardized) and adjusted to the required light output according to the size of the room. can do. And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

It is a block diagram of the structure of the illuminating device common to each embodiment of this invention. It is a top view of the 1st light emitting module used for the illuminating device of 1st Embodiment. It is a top view of the 2nd light emitting module used for the illuminating device of 1st Embodiment. FIG. 3 is a wiring diagram of the first light emitting module of FIG. 2. FIG. 4 is a wiring diagram of the second light emitting module of FIG. 3. It is a top view of the illuminating device in case the magnitude | size of the room of 1st Embodiment is 4.5 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 1st Embodiment is 6 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 1st Embodiment is 8 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 1st Embodiment is 10 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 2nd Embodiment is 6 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 3rd Embodiment is 4.5 tatami. It is a top view of the 1st light emitting module used for the illuminating device of 4th Embodiment. It is a top view of the 2nd light emitting module used for the illuminating device of 4th Embodiment. It is an example of the wiring diagram of the 1st light emitting module of FIG. It is an example of the wiring diagram of the 1st light emitting module of FIG. It is an example of the wiring diagram of the 2nd light emitting module of FIG. It is an example of the wiring diagram of the 2nd light emitting module of FIG. It is a top view of the illuminating device in case the magnitude | size of the room of 4th Embodiment is 6 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 5th Embodiment is 4.5 tatami. It is a top view of the illuminating device in case the magnitude | size of the room of 6th Embodiment is 4.5 tatami. It is a top view of an example of the light emitting module in which the pitch of LED of the present invention is gradually narrowed.

Embodiments of the present invention will be described below with reference to the drawings. Members common to the embodiments are denoted by the same reference numerals, and redundant description is omitted. Further, the configurations of the respective embodiments may be appropriately combined within a possible range.

In the following description, a ceiling light that is attached to the ceiling of a building as an illumination device will be described as an example. The ceiling light is, for example, a disk-shaped chassis formed of aluminum or the like attached to the ceiling surface, a control board provided in the center of the chassis, a light emitting module provided in the chassis so as to surround the control board, The chassis includes a control board and a cover provided to surround the side on which the light emitting module is attached.

First, a configuration common to the embodiments will be described. FIG. 1 is a block diagram of a configuration of a lighting device common to the embodiments. The lighting device 10 includes a control board 11 and a light emitting module 12, and can be operated by a power switch 13 or a remote controller 14 provided on the wall of the room. The configuration of the light emitting module 12 will be described in each embodiment described later.

The control board 11 drives the light emitting module 12 and the night light 17 in accordance with a control signal from the power source 15 for supplying power to each part, a microcomputer 16 for controlling each part, a night light 17 including an orange LED, and the like. Driver 18, an infrared receiver 19 that receives an infrared signal from the remote controller 14, and a buzzer 20 that notifies the user by sound.

Next, the operation of the lighting device 10 will be described. When the power switch 13 is operated, the microcomputer 16 counts the number of times the power switch 13 is repeatedly turned on and off in a short time, and switches a plurality of operation modes according to the number of times. As an example, turning off → lighting (50% brightness) → lighting (100% brightness) → nightlight lighting is repeated. Further, depending on the configuration of the light emitting module 12, switching from the light bulb color to the daylight color can be made. However, switching too many operation modes is not preferable because it may increase the number of steps required to reach the desired operation mode (the number of times the power switch 13 is turned on / off).

On the other hand, more detailed operation can be easily controlled by the operation by the remote controller 14. A control signal transmitted by infrared rays from the remote controller 14 is received by the infrared receiver 19 and transmitted to the microcomputer 16. The microcomputer 16 performs an operation according to the content of the control signal. This operation includes an operation for sounding the buzzer 20 during a specific operation, a power source 15 and a driver for adjusting on / off of the main illumination (illumination by the light emitting module 12) and the night light 17, brightness, color, and the like. 18 controls are included.

<First Embodiment>
In the first embodiment, the first and second light emitting modules are used as the light emitting module 12. 2 is a plan view of a first light emitting module used in the lighting device of the first embodiment, FIG. 3 is a plan view of a second light emitting module used in the lighting device of the first embodiment, and FIG. 4 is a plan view of FIG. FIG. 5 is a wiring diagram of the second light emitting module of FIG. 3.

As shown in FIG. 2, the first light emitting module 30 includes a rectangular substrate 31, four LEDs 32 mounted on the substrate 31, a light diffusion lens 33 that covers the light emitting surface side of each LED 32, and a driver 18. And a connector 34 for connecting to the cable.

The LEDs 32 are arranged at equal intervals in a line in the longitudinal direction of the substrate 31. The LED 32 is connected in series to a connector 34 as shown in FIG. The LED 32 is encapsulated with a yellow phosphor or a resin containing red and green phosphors on a blue LED chip, and emits white light.

The light diffusing lens 33 is formed of a transparent resin or transparent glass, and has a light distribution characteristic in which light emitted from the LEDs 32 is individually diffused so that the light intensity is uniform on the lens surface. The light diffusion lens 33 is a hemispherical lens in FIG. For example, the light diffusion lens 33 extends the directivity from the LED 32 to about 120 to 140 °. The light diffusing lens 33 may be included in the package of the LED 32.

As the connector 34, a connector directly soldered to the substrate 31, which is a printed circuit board, a card edge type in which electrodes are arranged on one side of the substrate, and the like can be used.

As shown in FIG. 3, the second light emitting module 40 includes a rectangular substrate 41 longer in the longitudinal direction than the substrate 31, five LEDs 32 mounted on the substrate 41, and light that covers the light emitting surface side of each LED 32. A diffusion lens 33 and a connector 34 for connecting to the driver 18 are provided.

The LEDs 32 are arranged at regular intervals in a line in the longitudinal direction of the substrate 41. This pitch may be the same as or different from the pitch in the first light emitting module 30. The LED 32 is connected in series to the connector 34 as shown in FIG.

Thus, the first light emitting module 30 and the second light emitting module 40 differ in the size (length) of the

substrates

31 and 41 and the number of LEDs 32. The substrates may be the same size as long as the number of LEDs 32 is different. Further, the number of LEDs 32 is not particularly limited. Further, the LEDs 32 may be arranged unevenly. Furthermore, the shape of the

substrates

31 and 41 is not limited to a rectangular shape, and may be another polygonal shape or a curved shape such as an arc shape.

Further, the LED 32 may be composed of two types having different color temperatures, and the same type of LED may be mounted on the same type of light emitting module. For example, the LED 32 mounted on the first light emitting module 30 may be a daylight color, and the LED 32 mounted on the second light emitting module 40 may be a light bulb color. In general, since the light emission efficiency is lowered and the brightness is lowered when the light bulb color is emitted, it is desirable that the second light emitting module 40 having a large number of LEDs 32 is used as the light bulb color. When LEDs having different color temperatures are used, it is desirable that light can be dimmed for each color. Therefore, it is desirable that the first and second

light emitting modules

30 and 40 be individually dimmable.

Next, a configuration example of the lighting device according to the first embodiment will be described. In the following, several lighting devices designed according to the size of the room will be described as an example in accordance with the display standard for the number of tatami mats applied to the LED ceiling light established by the Japan Lighting Equipment Manufacturers Association. Here, the LED 32 having a total luminous flux of 80 lm was used. As a result, the total total luminous flux of the first light emitting module 30 mounted with the four LEDs 32 is 320 lm, and the total total luminous flux of the second light emitting module 40 mounted with the five LEDs 32 is 400 lm.

Table 1 shows the number of first and second

light emitting modules

30 and 40 according to the size of the room (the number of tatami mats). When designing the number of the first and second

light emitting modules

30 and 40, the efficiency of light that can be effectively used was calculated as 80%. This is because the emitted light from the LED 32 is partially absorbed by a cover or the like and therefore does not reach the whole room.

As shown in Table 1, when the size of the room is 4.5 tatami mats and 5 each of the first and second

light emitting modules

30 and 40 are used, the total total luminous flux is 3600 lm, which is 2880 lm with 80% efficiency. Achieve 2700 lm of standard instrument luminous flux.

Similarly, in the case of 6 tatami mats, 6 each of the first and second

light emitting modules

30 and 40 are used, 7 in the case of 8 tatami mats, 8 in the case of 10 tatami mats, and 9 each in the case of 12 tatami mats. In the case of 14 tatami mats, the use of 10 pieces each achieves the standard instrument luminous flux.

6 is a plan view of the lighting device when the room size is 4.5 tatami, FIG. 7 is a plan view of the lighting device when the room size is 6 tatami, and FIG. 8 is a room size. FIG. 9 is a plan view of the lighting device when the room size is 10 tatami.

In the illuminating device 101 shown in FIG. 6, the first and second

light emitting modules

30 and 40 are arranged so as to form pentagonal sides with the center of the illuminating device 101 as the center. A control board 11 is disposed in the center of the illumination device 101. Here, by arranging the long second light emitting module 40 on the outside and the short first light emitting module 30 on the inside, it can be arranged in a space-saving manner.

Similarly, in the lighting device 102 shown in FIG. 7, the first and second

light emitting modules

30 and 40 are hexagonal, and in the lighting device 103 shown in FIG. 8, the first and second

light emitting modules

30 and 40 are heptagonal. Furthermore, in the illuminating device 104 shown in FIG. 9, the 1st and 2nd

light emitting modules

30 and 40 are arrange | positioned at octagon shape.

6 to 9, the light emitting modules 12 (first and second light emitting modules 30 and 40) form the same polygonal sides centering on the center of the lighting device for each type. Is arranged and configured.

Table 2 shows the number of the first and second light emitting modules according to the size of the room (the number of tatami mats) when other first and second light emitting modules are used. It is assumed that the first light emitting module is equipped with five LEDs, and the second light emitting module is equipped with six LEDs. An LED having a total luminous flux of 65 lm was used. As a result, the total total luminous flux of the first light emitting module is 325 lm, and the total total luminous flux of the second light emitting module is 390 lm. In the case of the configuration shown in Table 2, the first and second light emitting modules can be arranged in the same manner as in FIGS.

As described above, according to the lighting device of the present embodiment, by combining two types of light emitting modules having different numbers of LEDs as appropriate, the light emitting modules can be shared (standardized), and the size of the room can be increased. The required light output can be adjusted accordingly. And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

Second Embodiment
The second embodiment is different from the first embodiment in that three types of light emitting modules having different numbers of LEDs are used, and other configurations are the same as those of the first embodiment. For example, the first and second light emitting modules use the

light emitting modules

30 and 40 shown in FIGS. 2 and 3, and the third light emitting module includes six LEDs 32 mounted on a substrate longer than the substrate 41.

Table 3 shows the number of first to third light emitting modules according to the size of the room (the number of tatami mats). Here, an LED having a total luminous flux of 50 lm was used. Accordingly, the total total luminous flux of the first light emitting module is 200 lm, the total total luminous flux of the second light emitting module is 250 lm, and the total total luminous flux of the third light emitting module is 300 lm.

As shown in Table 3, when the room size is 4.5 tatami mats and 5 each of the first to third light emitting modules are used, the total total luminous flux is 3750 lm, which is 3000 lm with 80% efficiency. Achieve 2700 lm of luminous flux.

Similarly, in the case of 6 tatami mats, 6 each of the first to third light emitting modules are used, 7 for 8 tatami mats, 8 for 10 tatami mats, 9 for 12 tatami mats, 14 tatami mats. In the case of, use of 10 each achieves the standard instrument luminous flux.

FIG. 10 shows a plan view of the lighting device when the room size is 6 tatami. The first to third

light emitting modules

30, 40, 50 are arranged so as to form hexagonal sides centering on the center of the lighting device 105. A control board 11 is disposed in the center of the illumination device 105. Here, the third light emitting module 50 with the longest substrate is arranged on the outside, the second light emitting module 40 is arranged on the inside, and the first light emitting module 30 with the shortest substrate is further arranged on the inside, so that they are arranged in a space-saving manner. be able to.

Although not shown in the drawings, similarly, in the lighting device in the case of 4.5 tatami mats, the first to third light emitting modules are respectively pentagonal, in the lighting device in the case of 8 tatami mats in the heptagon shape, and in the lighting device in the case of 10 tatami mats. Then, it is arranged in an octagonal shape, in a nine-corner shape in a lighting device in the case of 12 tatami mats and in a decagonal shape in a lighting device in the case of 14 tatami mats. That is, the light emitting modules 12 (first to third

light emitting modules

30, 40, 50) are arranged and configured so as to form the same polygonal sides centering on the center of the lighting device for each type.

As described above, according to the illumination device of the present embodiment, the light emitting modules can be shared (standardized) while appropriately combining three types of light emitting modules with different numbers of LEDs, and the size of the room can be increased. The required light output can be adjusted accordingly. And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

<Third Embodiment>
The third embodiment differs from the first embodiment in that the number of first light emitting modules and the number of second light emitting modules used in the lighting device are different, and the arrangement shape of the first and second light emitting modules is different. The configuration is the same as in the first embodiment. For example, the first light emitting module having five LEDs 32 and the second light emitting module having six LEDs 32 are used.

Table 4 shows the number of first and second light emitting modules according to the size of the room (the number of tatami mats). Here, an LED having a total luminous flux of 70 lm was used. As a result, the total total luminous flux of the first light emitting module on which five LEDs are mounted is 350 lm, and the total total luminous flux of the second light emitting module on which six LEDs are mounted is 420 lm.

As shown in Table 4, when the size of the room is 4.5 tatami mats, if four first light emitting modules and five second light emitting modules are used, the total luminous flux is 3500 lm, which is 2800 lm with 80% efficiency. The standard instrument luminous flux of 2700 lm is achieved.

Similarly, in the case of 6 tatami mats, 5 first light emitting modules and 6 second light emitting modules are used. In the case of 8 tatami mats, 6 first light emitting modules, 7 second light emitting modules, 10 tatami mats are used. Is seven first light emitting modules, eight second light emitting modules, eight first light emitting modules in the case of 12 tatami mats, nine second light emitting modules, and nine first light emitting modules in the case of 14 tatami mats When ten second light emitting modules are used, the standard instrument luminous flux is achieved.

FIG. 11 shows a plan view of the lighting device when the room size is 4.5 tatami. The first light emitting module 30 ′ is arranged to form a quadrangular side centered on the center of the lighting device 106, and the second light emitting module 40 ′ forms a pentagonal side centered on the center of the lighting device 106 Are arranged to be. A control board 11 is disposed in the center of the illumination device 106. Here, by arranging the longer second light emitting module 40 ′ on the outer side and the shorter first light emitting module 30 ′ on the inner side, the space-saving arrangement can be achieved.

Although not illustrated, similarly, in the lighting device in the case of 6 tatami mats, the first light emitting module has a pentagonal shape, the second light emitting module has a hexagonal shape, and in the lighting device in the case of 8 tatami mats, the first light emitting module has a hexagonal shape, second The light emitting module has a heptagon shape, the lighting device in the case of 10 tatami mats has the first light emitting module in the heptagon shape, the second light emitting module has the octagon shape, and the lighting device in the case of 12 tatami mats has the first light emitting module in the octagon shape, In the lighting device in the case of a 14 tatami mat, the first light emitting module is arranged in a nine-sided shape, and the second light-emitting module is arranged in a ten-sided shape. That is, the light emitting modules 12 (first and second light emitting modules 30 ′ and 40 ′) are arranged and configured so as to form irregularly shaped polygonal sides centering on the center of the lighting device for each type.

<Fourth embodiment>
The fourth embodiment is different from the first embodiment in that two types of light emitting modules in which LEDs are mounted in a plurality of rows are used, and other configurations are the same as those of the first embodiment. FIG. 12 is a plan view of a first light emitting module used in the lighting device of the fourth embodiment, FIG. 13 is a plan view of a second light emitting module used in the lighting device of the fourth embodiment, and FIGS. 14A and 14B are diagrams. FIG. 15A and FIG. 15B are examples of wiring diagrams of the second light emitting module of FIG. 13.

As shown in FIG. 12, the first light emitting module 60 includes a rectangular substrate 61, eight LEDs 32 mounted on the substrate 61, a light diffusion lens 33 covering the light emitting surface side of each LED 32, and the driver 18. And a connector 34 for connecting to the cable.

The LEDs 32 are arranged in two rows at equal intervals in the longitudinal direction of the substrate 61. That is, four are arranged in a line. The LEDs 32 may all be connected in series to the connector 34 as shown in FIG. 14A, or may be connected in series to the connector 34 one line at a time as shown in FIG. 14B.

As shown in FIG. 13, the second light emitting module 70 includes a rectangular substrate 71 that is longer in the longitudinal direction than the substrate 61, ten LEDs 32 mounted on the substrate 71, and light that covers the light emitting surface side of each LED 32. A diffusion lens 33 and a connector 34 for connecting to the driver 18 are provided.

The LEDs 32 are arranged in two rows at equal intervals in the longitudinal direction of the substrate 71. This pitch may be the same as or different from the pitch in the first light emitting module 60. The LEDs 32 may be all connected in series to the connector 34 as shown in FIG. 15A, or may be connected in series to the connector 34 one by one as shown in FIG. 15B.

As described above, the first light emitting module 60 and the second light emitting module 70 are different in the size (length) of the

substrates

61 and 71 and the number of the LEDs 32. The substrates may be the same size as long as the number of LEDs 32 is different. Further, the number of LEDs 32 and the number of arrays are not particularly limited. Moreover, the arrangement of the LEDs 32 may be a staggered arrangement or an uneven arrangement. Furthermore, the shape of the

substrates

61 and 71 is not limited to a rectangular shape, and may be another polygonal shape or a curved shape such as an arc shape.

Table 5 shows the number of first and second light emitting modules according to the size of the room (the number of tatami mats). Here, an LED having a total luminous flux of 40 lm was used. As a result, the total total luminous flux of the first light emitting module is 320 lm, and the total total luminous flux of the second light emitting module is 400 lm.

As shown in Table 5, when the size of the room is 4.5 tatami mats, if 5 each of the first and second light emitting modules are used, the total total luminous flux is 3600 lm, which is 2880 lm with 80% efficiency. Achieve 2700 lm of luminous flux.

Similarly, in the case of 6 tatami mats, 6 each of the first and second light emitting modules are used, in the case of 8 tatami mats, 7 in each case, in the case of 10 tatami mats, in the case of 8 tatami mats, in the case of 12 tatami mats, in each case of 9 tatami mats, 14 tatami mats. In the case of, use of 10 each achieves the standard instrument luminous flux.

FIG. 16 shows a plan view of the lighting device when the room size is 6 tatami. The first and second

light emitting modules

60 and 70 are arranged so as to form hexagonal sides with the center of the lighting device 107 as the center. A control board 11 is disposed in the center of the lighting device 107. Here, by arranging the longer second light emitting module 70 on the outer side and the shorter first light emitting module 60 on the inner side, the second light emitting module 70 can be arranged in a space-saving manner.

Although not shown in the drawings, similarly, in the lighting device in the case of 4.5 tatami, the first and second light emitting modules are pentagonal, in the case of 8-tatami in the heptagon shape, and in the case of 10 tatami. Then, it is arranged in an octagonal shape, in a nine-corner shape in a lighting device in the case of 12 tatami mats and in a decagonal shape in a lighting device in the case of 14 tatami mats. That is, the light emitting modules 12 (first and second light emitting modules 60 and 70) are arranged and configured so as to form the same polygonal sides centering on the center of the lighting device for each type.

<Fifth Embodiment>
The fifth embodiment is different from the first embodiment in that the light emitting module is arranged so as to extend radially outward from the vicinity of the center of the lighting device, and is different from the first embodiment in the other configuration. It is the same as the form.

FIG. 17 shows a plan view of the lighting device when the room size is 4.5 tatami. In the illuminating device 108 shown in FIG. 17, the first and second

light emitting modules

30 and 40 are radially arranged so as to extend outward from the vicinity of the center of the illuminating device 108 in the radial direction. A control board 11 is disposed in the center of the illumination device 108. In FIG. 17, the pair of first and second

light emitting modules

30 and 40 are arranged side by side, but the present invention is not limited to this configuration. For example, the first and second

light emitting modules

30 and 40 are further separated and separated. May be arranged radially.

Thus, according to the illuminating device of the present embodiment, the light emitting module 12 (first and second light emitting modules 30, 40) is arranged so as to extend outward in the radial direction from the vicinity of the center of the illuminating device. Composed. Therefore, by using two types of light emitting modules with different numbers of mounted LEDs as appropriate, the light output modules can be adjusted to the required light output according to the size of the room while standardizing the light emitting modules. . And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

<Sixth Embodiment>
The sixth embodiment is different from the first embodiment in that the light emitting module is arranged so as to extend outward from the vicinity of the center of the lighting device in a direction other than the radial direction. This is the same as in the first embodiment.

FIG. 18 shows a plan view of the lighting device when the room size is 4.5 tatami. In the illumination device 109 shown in FIG. 18, the first and second

light emitting modules

30 and 40 are radially arranged so as to extend outward from the vicinity of the center of the illumination device 109 in the radial direction. A control board 11 is disposed in the center of the illumination device 109. In FIG. 18, the pair of first and second

light emitting modules

30 and 40 are arranged side by side, but the present invention is not limited to this form. For example, the first and second

light emitting modules

30 and 40 are further separated and separated. It may be arranged in a windmill shape.

Such a windmill-like arrangement is effective when the light-emitting module is too long to fit in the lighting device in the radial arrangement. Further, since the arrangement of the light emitting modules is more uniform in the windmill arrangement than in the radial arrangement, more uniform illumination can be obtained.

Thus, according to the illuminating device of the present embodiment, the light emitting module 12 (the first and second light emitting modules 30 and 40) is arranged so as to extend outward from the vicinity of the center of the illuminating device except in the radial direction. Configured. Therefore, by using two types of light emitting modules with different numbers of mounted LEDs as appropriate, the light output modules can be adjusted to the required light output according to the size of the room while standardizing the light emitting modules. . And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

In the fifth and sixth embodiments described above, the

light emitting modules

30 and 40 in which the LEDs 32 are arranged at equal intervals are described. However, the pitch of the LEDs 32 is narrower toward the outside of the lighting device. Also good. FIG. 19 shows a plan view of an example of the light emitting module 80 in which the pitch of the LEDs 32 is gradually narrowed. FIG. 19 shows an example in which the pitch of the innermost LEDs 32 is 100 mm, and gradually decreases toward 100, 80, 60, 50, and 40 mm toward the outside.

By obtaining the lighting device of the fifth or sixth embodiment using such a light emitting module 80, the density of the LEDs 32 is reduced near the center of the lighting device where the interval between the light emitting modules is narrow, and the interval between the light emitting modules is wide. Near the outside of the illumination device, the density of the LEDs 32 can be increased, and more uniform illumination can be obtained.

Further, in FIG. 19, the connector 34 is provided at an end portion disposed on the inner side in the longitudinal direction of the substrate 81. Thereby, according to arrangement | positioning of the light emitting module of 5th and 6th embodiment, it becomes possible to connect the connector 34 to the control board 11 with a direct connection or a short line, and can simplify a connection.

The embodiments of the present invention will be summarized below. The lighting device 10 according to an embodiment of the present invention is a lighting device including a plurality of light emitting modules 12 each having a plurality of light emitting diodes mounted on a substrate. The light emitting module 12 includes a plurality of types, and the light emitting diodes for each type. It is assumed that the number of installed is different.

According to this configuration, a plurality of types of light emitting modules having different numbers of mounted light emitting diodes are used in appropriate combination, so that the light output modules can be used in common (standardized) and the required light output according to the size of the room can be achieved. Can be adjusted. And the common use of light emitting modules leads to cost reduction, shortened development period, and reduced inventory of light emitting modules.

In the above lighting device, it is preferable that the plurality of types is three or less from the viewpoint of sharing the light emitting module.

Further, in the above illuminating device, in order to embody the arrangement of the light emitting modules, the plurality of types of light emitting modules are such that the substrate has a rectangular shape with a different size for each type, and the light emitting modules are illuminating devices for each type. It is good also as arrange | positioning so that the polygonal side centering on the center of may be comprised.

Further, in the above lighting device, in order to embody the arrangement of the light emitting modules, the plurality of types of light emitting modules are such that the substrate has a rectangular shape with a different size for each type, and the light emitting modules are near the center of the lighting device. It is good also as extending from the radial direction outward.

Further, in the above lighting device, in order to embody the arrangement of the light emitting modules, the plurality of types of light emitting modules are such that the substrate has a rectangular shape with a different size for each type, and the light emitting modules are near the center of the lighting device. It is good also as extending to outer sides other than radial direction.

Further, in the lighting device in which the light emitting module is arranged in the radial direction or in the outer direction other than the radial direction, the pitch of the light emitting diodes in the light emitting module may be narrowed toward the outside of the lighting device. With this configuration, the density of the light emitting diodes can be reduced near the center of the lighting device where the distance between the light emitting modules is narrow, and the density of the light emitting diodes can be increased near the outside of the lighting device where the distance between the light emitting modules is wide. Lighting is obtained.

Further, in the above illumination device, the light emitting diode may be of two types having different color temperatures, and the same type of the light emitting diode may be mounted on the same type of the light emitting module. With this configuration, if it is controlled for each type of light emitting module, the light can be dimmed for each color.

In the above illumination device, it is preferable to provide a light diffusion lens that covers the light emitting surface side of the light emitting diode in order to obtain uniform emitted light.

In the illumination device, it is desirable that the light diffusing lens has a light distribution characteristic in which light emitted from the light emitting diodes is individually diffused so that the light intensity is uniform on the lens surface.

The lighting device of the present invention is attached to a ceiling of a living room or the like and can be used for various lighting fixtures including a ceiling light that irradiates light to the whole.

10, 101 to 109

Illumination device

31, 41, 61, 71, 81 Substrate 32 LED (light emitting diode)
12 Light emitting module 33 Light diffusion lens

Claims

A lighting device including a plurality of light emitting modules each having a plurality of light emitting diodes mounted on a substrate,
There are a plurality of types of the light emitting modules, and the number of mounted light emitting diodes is different for each type.
The lighting device according to claim 1, wherein the plurality of types is three or less.
In the plurality of types of light emitting modules, the substrate has a rectangular shape with a different size for each type,
3. The lighting device according to claim 1, wherein the light emitting modules are arranged so as to form a polygonal side centering on a center of the lighting device for each type.
In the plurality of types of light emitting modules, the substrate has a rectangular shape with a different size for each type,
The lighting device according to claim 1, wherein the light emitting module extends radially outward from a vicinity of a center of the lighting device.
In the plurality of types of light emitting modules, the substrate has a rectangular shape with a different size for each type,
The lighting device according to claim 1, wherein the light emitting module extends outward from the vicinity of the center of the lighting device in a direction other than the radial direction.