CN204403966U - Ligthing paraphernalia and secondary light source unit - Google Patents

Abstract

Ligthing paraphernalia possesses: the appliance body with the plate-like portion be made up of non-light transmittance material, be arranged at plate-like portion face side main light source unit, be arranged at plate-like portion rear side and possess the secondary light source unit of linear light source.Linear light source is configured in the position different from each other apart from the side-play amount (h1, h2) at the back side of plate-like portion (5).Each linear light source is made up of the arrangement of multiple light-emitting component.In addition, the linear light source of the larger side of side-play amount (h1) at the back side of distance plate-like portion, compared with the linear light source of a less side, comprises the highest light-emitting component of luminous efficiency more.

Description

Lighting fixtures and auxiliary light source units

technical field

The utility model relates to a lighting fixture equipped with light emitting elements such as LED (Light Emitting Diode) as a light source and an auxiliary light source unit, and relates to a technique for suppressing the decrease of brightness in a lighting fixture equipped with a main light source unit and an auxiliary light source unit.

Background technique

In recent years, lighting fixtures using light source units using light-emitting elements such as LEDs as light sources have become popular. On the other hand, lighting fixtures such as ceiling lamps in which a light source unit is accommodated in an area surrounded by a cover and a fixture main body are generally used as lighting fixtures for buildings.

For example, Patent Document 1 proposes a ceiling lamp-type lighting fixture including a light source unit including a light emitting element. FIG. 12 is a cross-sectional view of a lighting fixture described in Patent Document 1. As shown in FIG. The lighting fixture 900 includes a fixture main body 903 , a main light source unit 910 , a power supply unit 940 , and a cover 950 . The main light source unit 910 has: a main light emitting module 912 including a mounting substrate and LEDs, and a diffusion lens 911 disposed on the surface thereof. The main light emitting module 912 is arranged on the front side of the device main body 903 . The cover 950 is fixed to the device main body 903 in a state covering the main light source unit 910 . The material constituting the cover 950 is a translucent material.

The lighting fixture 900 is attached to the ceiling with the cover 950 facing downward. The emitted light from the main light emitting module 912 passes through the diffusion lens 911 and the cover 950 and is emitted to the outside of the lighting fixture 900 . When the lighting fixture 900 is installed on the ceiling indoors, the emitted light from the main light source unit 910 is diffused from directly below the lighting fixture 900 to below the wall.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2012-146441

Outline of utility model

Problems to be solved by utility models

However, when the above-mentioned conventional lighting fixture is installed on the ceiling indoors, there may be areas above the ceiling and walls where the emitted light from the main light source unit cannot reach. When there is a range in the room that the outgoing light cannot reach, generally speaking, the user will feel that the room is dark as a whole. In this regard, in addition to the structure of the conventional lighting fixture described above, there is also a method of providing an auxiliary light source unit that illuminates above the ceiling and the wall. In addition, it is also conceivable to dispose the auxiliary light source unit on the ceiling side, that is, the back side of the plate-shaped part, so that the light is emitted in a direction parallel to the back side of the plate-shaped part, and the back side of the plate-shaped part is the setting of the plate-shaped part. The side opposite to the side with the main light source unit.

However, in such a configuration, part of the emitted light from the auxiliary light source unit may be blocked by the back surface of the plate-like portion. As a result, the upper part of the wall is sometimes darkened.

Utility model content

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a lighting fixture including a main light source unit and an auxiliary light source unit, which suppresses a sense of brightness caused by the blocking of outgoing light from the auxiliary light source unit. decline.

The technical means used to solve the problem

In order to achieve the above object, a lighting fixture according to an aspect of the present invention is characterized by comprising: a fixture main body having a plate-like portion made of a light-impermeable material; and a main light source unit provided on the front of the plate-like portion. side; and an auxiliary light source unit disposed on the back side of the plate-shaped portion, the auxiliary light source unit is provided with a plurality of linear light sources, and the plurality of linear light sources make their respective longitudinal directions and the back surface of the plate-shaped portion parallel, and arranged at positions where the offsets of each linear light source from the back of the plate-shaped part are different from each other, each linear light source is composed of an arrangement of a plurality of light emitting elements, and among the plurality of linear light sources Including a plurality of light-emitting elements with different luminous efficiencies, among at least two linear light sources among the plurality of linear light sources, the linear light source with a larger offset from the back surface of the plate-shaped part has more Contains the type of light-emitting element with the highest luminous efficiency.

The effect of utility model

In the lighting fixture according to one aspect of the present invention, in the auxiliary light source unit, a plurality of linear light sources are arranged at positions at which offset amounts from the back surface of the plate-shaped portion are different from each other. For example, when the lighting fixture is installed indoors on the ceiling, the larger the linear light source with the larger offset from the back surface of the plate-shaped part, the more it is possible to suppress the leakage of the light-emitting elements included in the linear light source to the upper side of the wall. The emitted light is blocked by the back surface of the plate-shaped part. This is because, the greater the offset from the back surface of the plate-shaped portion, the more the limit of the emitted light from the light-emitting elements included is directed downward. side. In addition, in the lighting fixture according to one aspect of the present invention, when at least two linear light sources having different offset amounts from the rear surface of the plate-shaped portion in the auxiliary light source unit are observed, the amount of offset from the rear surface of the plate-shaped portion The larger linear light source contains more light emitting elements of the type with the highest luminous efficiency than the smaller linear light source. Therefore, the emitted light from the light emitting element with the highest luminous efficiency easily reaches the upper part of the wall, and the emitted light with high brightness is diffused above the wall. This is because, when the same power is supplied to the light-emitting elements, the light-emitting elements with higher luminous efficiency have higher luminance of emitted light. As a result, the upper part of the wall becomes brighter. As a result, the user feels that the brightness of the entire room is improved.

In this way, in the lighting fixture including the main light source unit and the auxiliary light source unit, it is possible to suppress a reduction in brightness due to the blocking of the outgoing light from the auxiliary light source unit.

Description of drawings

Fig. 1 is an exploded perspective view of the lighting fixture according to the embodiment seen from the front side.

Fig. 2 is an exploded perspective view of the lighting fixture shown in Fig. 1 viewed from the back side.

Fig. 3 is a cross-sectional view of the lighting fixture shown in Fig. 1 .

Fig. 4 is a partially enlarged view of a cross-sectional view of the lighting fixture shown in Fig. 3 .

Fig. 5 is an exploded perspective view of an auxiliary light source unit in the lighting fixture shown in Fig. 1 .

Fig. 6 is a circuit diagram of a light emitting module of an auxiliary light source unit in the lighting fixture shown in Fig. 1 .

Fig. 7 is a schematic diagram of a light emitting module of the auxiliary light source unit in the lighting fixture shown in Fig. 1 .

Fig. 8 is a cross-sectional view showing the effect of the lighting fixture shown in Fig. 1 .

FIG. 9 is a diagram showing the effect of the lighting fixture shown in FIG. 1 , FIG. 9( a ) is a diagram of a comparative example, and FIG. 9( b ) is a diagram of the lighting fixture shown in FIG. 1 .

Fig. 10 is a schematic diagram of a light-emitting module of an auxiliary light source unit in a lighting fixture according to a modified example. Fig. 10(a) shows a modified example of a linear light source, and Fig. 10(b) shows a modification in which the luminous efficiency of LEDs is two types. Example diagram.

Fig. 11 is a schematic diagram of the light-emitting module of the auxiliary light source unit in the lighting fixture of the modified example, (a) of Fig. 11 shows a modified example in which LEDs with the highest luminous efficiency are arranged in all linear light sources, and (b) of Fig. 11 shows an installation A diagram of a modified example in which the substrate has three arrangement regions.

Fig. 12 is a cross-sectional view of a conventional lighting fixture.

Detailed ways

<<implementation mode>>

A lighting fixture according to one aspect of the present invention will be described with reference to the drawings. Hereinafter, an embodiment in which an LED is used as a light-emitting element will be described.

Fig. 1 is an exploded perspective view of the lighting fixture according to the embodiment seen from the front side. Fig. 2 is an exploded perspective view of the lighting fixture viewed from the rear side.

1. Overall composition

As shown in FIG. 1 , the lighting fixture 1 includes a fixture main body 3 , a main light source unit 10 , a center light source unit 20 , an auxiliary light source unit 30 , a power supply unit 40 , a cover 50 , and a cover 60 . The lighting fixture 1 is a ceiling lamp installed on a ceiling.

2. Composition of each department

(apparatus body)

The instrument main body 3 has a plate-shaped portion 5 and a crown portion 7 provided on the back side of the plate-shaped portion 5 . The plate-shaped part 5 is a disc shape provided with a through-hole 5a in the center, and has an annular flat part 5b, an annular central part 5c extending inside the flat part 5b and raised by a section, and An annular outer peripheral portion 5d that extends outside the portion 5b and is slightly lower. The crown portion 7 is a flat square tube (the side surface of the tube is indicated by 7 a ), the lower end of the square tube extends outward, and the outline of the extended end is formed into a circular shape. Hereinafter, the inside of the extension end is referred to as a flat portion 7b, and the contour portion of the extension end is referred to as a flange portion 7c. The upper end of the square tube is closed by a top plate 7e provided with a through hole 7d. The cover 50 is fixed to the outer peripheral portion 5 d of the plate-like portion 5 . The fixing of the cover 50 to the plate-shaped part 5 is performed by being sandwiched by the receiver 51 .

As shown in FIG. 2 , four spacers 61 are provided at equal intervals on the top plate 7 e of the crown portion 7 . The gasket 61 prevents the cover 60 and the like from coming into direct contact with the ceiling. The material constituting the spacer 61 is, for example, a light-transmitting silicone resin. Referring back to FIG. 1 , the crown portion 7 is fixed to the plate portion 5 by screwing the screw holes provided on the outer peripheral portion 5 d of the plate portion 5 and the flange portion 7 c of the crown portion 7 . A power supply unit 40 is accommodated in a space surrounded by the plate portion 5 and the crown portion 7 . The material constituting the plate portion 5 and the crown portion 7 is, for example, a non-translucent material such as iron alloy or aluminum. When forming the plate-like portion 5 and the crown portion 7 from aluminum, they may be formed by pressing, for example. The materials constituting the plate-shaped portion 5 and the crown portion 7 may be the same or different.

(main light source unit)

The main light source unit 10 is composed of a main light emitting module 12 and a main light source lens 11 disposed on its surface. The main light emitting module 12 is formed by arranging four subunits 13. Each subunit 13 includes a quarter-arc-shaped mounting substrate 13a and a plurality of LEDs 13b arranged on the surface of the mounting substrate 13a. Since four 1/4 arc-shaped mounting substrates 13a are arranged in a row and constituted, the shape of the main light source unit 10 is annular as a whole. The emission color of each LED13b is white, for example. The main light source lens 11 is a lens that diffuses light emitted from the main light emitting module 12 . The shape of the main light source lens 11 is a partially convex ring shape located above the LED 13b. The material constituting the main light source lens 11 is, for example, a translucent material such as acrylic resin, polycarbonate resin, or glass. The main light-emitting module 12 is clamped by the main light source lens 11 and the plate-shaped part 5 , and is fixed to the main light source lens 11 and the plate-shaped part 5 by screwing through the screw holes provided on the inner and outer circumferences of the main light source lens 11 .

The main light source units 10 are arranged so as to overlap each other in the Z-axis direction shown in FIG. 1 on the front side of the flat plate portion 5 b of the plate-like portion 5 . Thereby, as shown in FIG. 3 , the center light source unit 20 is provided on the front side of the flat plate portion 5 b of the plate portion 5 so that the main emission direction becomes a direction perpendicular to the plate portion 5 .

(center light source unit)

Referring back to FIG. 1 , the central light source unit 20 is composed of a central light emitting module 22 and a central lens 21 disposed on its surface. The center light emitting module 22 includes an annular mounting substrate 22a and a plurality of LEDs 22b arranged in a circumferential shape. The emission color of each LED22b is white, for example. The center lens 21 is a lens that diffuses light emitted from the center light emitting module 22 . The shape of the center lens 21 is the same as the shape of the main light source lens 11, and the part located above LED22b is convex ring shape. The material constituting the center lens 21 is, for example, a light-transmitting material such as acrylic resin, polycarbonate resin, or glass.

The central light source units 20 are arranged so as to overlap each other in the Z-axis direction shown in FIG. 1 on the front side of the central portion 5 c of the plate-like portion 5 . Thereby, as shown in FIG. 3 , the main light source unit 10 is provided on the front side of the central portion 5 c of the plate-shaped portion 5 so that the main emission direction is a direction perpendicular to the plate-shaped portion 5 .

(auxiliary light source unit)

The components constituting the auxiliary light source unit 30 will be described below using the exploded perspective view of FIG. 5 . The auxiliary light source unit 30 includes a base body 31 , a light emitting module 30 a disposed on the base body 31 , and a translucent cover 35 covering the light emitting module 30 a. In order to assemble the auxiliary light source unit 30, first, the mounting substrate 32 is attached to the mounting portion 31a of the base body 31 with an adhesive. Then, what is necessary is just to screw and fix the base body 31 and the translucent cover 35 to which the mounting board|substrate 32 was pasted.

The base body 31 has a mounting portion 31a on which the mounting substrate 32 is mounted, and a fixing portion 31b extending from the mounting portion 31a. The mounting part 31a is provided so as to stand upright on the fixing part 31b. The light emitting module 30 a includes a mounting substrate 32 , two linear light sources 32 a 1 and 32 b 1 provided on the surface of the mounting substrate 32 , and two connectors 34 . The shape of the mounting substrate 32 is a rectangle. In linear light source 32a1, 32b1, 12 LED33 are arrange|positioned in 1 linear form, respectively. That is, each linear light source 32a1, 32b1 is comprised by the arrangement of 12 LED33, respectively. The regions where the linear light sources 32a1 and 32b1 are arranged in the mounting substrate 32 are defined as the arrangement regions 32a and 32b. The material constituting the translucent cover 35 is, for example, a translucent material such as silicone resin, acrylic resin, polycarbonate resin, or glass. The translucent cover 35 has light diffusing properties. Therefore, the emitted light emitted from the LED 33 and transmitted through the translucent cover 35 spreads over a wider range. In order to impart light diffusing properties to the translucent cover 35 , similarly to the inner surface of the cover 50 , the inner surface may be subjected to a diffusion treatment for diffusing light emitted from the light source, for example, a diffusion treatment with silica gel or white paint.

LED33 is comprised by LED chip and the sealing member which consists of resin materials, for example. In addition, mounting of LED chips is performed by SMD (Surface Mount Device), for example. Although not shown in FIG. 5 , the 24 LEDs 33 included in the linear light sources 32 a 1 and 32 b 1 each include six white LEDs 33 a , bulb color LEDs 33 b , orange LEDs 33 d , and blue LEDs 33 c. Therefore, the emission color of the light emitted from the auxiliary light source unit 30 is, for example, white, light bulb color, orange, blue, and a mixture thereof. The connector 34 receives power from wiring (not shown) drawn from the power supply unit 40 , and supplies it to the wiring pattern formed on the mounting substrate 32 .

LED33 is connected in series for every LED33 with the same light emission color. Terminals are drawn from the LEDs 33 connected in series, and the terminals are individually connected to corresponding terminals of the connector 34 . Specifically, white LED33a, bulb color LED33b, orange LED33d, and blue LED33c are electrically connected in series, respectively. And the four LED33 groups electrically connected in series are mutually electrically connected in parallel. Thereby, LED33 with a different light emission color can be turned on individually. As a result, the output light of the auxiliary light source unit 30 can be toned. For example, in order to make a room brighter, what is necessary is just to supply large electric current to white LED33a. Figure 6 shows its circuit diagram.

Next, the arrangement of the auxiliary light source unit 30 will be described using FIG. 2 and FIG. 4 , wherein FIG. 4 is an enlarged view of a region α surrounded by a two-dot chain line in the cross-sectional view of FIG. 3 . The crown portion 7 provided with the auxiliary light source unit 30 is arranged to overlap in the Z-axis direction shown in FIG. 2 on the back side of the plate-like portion 5 . Thereby, as shown in FIG. 4 , on the back side of the plate-shaped portion 5, the auxiliary light source unit 30 is arranged so that the main emission direction becomes a direction parallel to the plate-shaped portion 5. More specifically, the auxiliary light source unit 30 is fixed to the crown portion 7 by screwing the flat portion 7 b of the crown portion 7 through the screw holes provided in the fixing portion 31 b of the base body 31 . As a result, the mounting substrate 32 is fixed to the crown portion 7 in a state of standing on the plate portion 5 .

Next, the arrangement of the linear light sources 32a1 and 32b1 will be described. The linear light sources 32 a 1 , 32 b 1 are arranged on the surface of the mounting board 32 fixed upright on the plate-shaped portion 5 , and are arranged at positions with different offsets from the rear surface of the plate-shaped portion 5 . The offset amounts of the linear light sources 32a1, 32b1 from the back surface of the plate-shaped part 5 are h1, h2, respectively. The offset h1 of the linear light source 32a1 is larger than the offset h2 of the linear light source 32b1. The respective longitudinal directions of the linear light sources 32 a 1 and 32 b 1 are parallel to the back surface of the plate-like portion 5 . With such an arrangement relationship, the main emission direction of the linear light sources 32 a 1 and 32 b 1 becomes a direction parallel to the back surface of the plate-like portion 5 .

(power supply unit)

Returning to FIG. 1 , the power supply unit 40 includes a control block 42 , a power supply block 43 , and the like that are provided on the surface of an insulating plate 41 . A control substrate is housed in the housing of the control block 42 . The control board and the power supply block 43 are connected by a flat wire 42a. The control block 42 receives, for example, a lighting signal and a non-lighting signal output from a remote controller operable by a user, and outputs a control signal to the power supply block 43 . The power supply block 43 is composed of a substrate and various electronic components mounted on the substrate. The circuit included in the power supply block 43 converts the supplied AC current into a desired DC current. Moreover, the power cord 42b drawn out from the power block 43 is connected to the socket for electric power supply through the through-hole 7d of the crown part 7, and the through-hole 60a of the cover 60. FIG.

(cover)

The cover 50 is formed in a bottomed cylindrical shape that covers the plate-like portion 5 . The material constituting the cover 50 is, for example, a light-transmitting material such as silicone resin, acrylic resin, polycarbonate resin, or glass. The inner surface of the cover 50 is subjected to a diffusion treatment for diffusing the emitted light from the center light source unit 20 and the main light source unit 10 , for example, a diffusion treatment with silica gel or white paint.

The cover 60 is provided with a through hole 60 a at the center, and is formed in a disk shape covering the auxiliary light source unit 30 . The material constituting the cover 60 is, for example, a light-transmitting material such as acrylic resin, polycarbonate resin, or glass.

(Summarize)

With this configuration, the emitted light from the center light source unit 20 and the main light source unit 10 passes through the cover 50 and is emitted to the outside of the lighting fixture 1 . In addition, by disposing the center light source unit 20 inside the annular main light source unit 10, uneven brightness of the lighting fixture 1 is suppressed. Furthermore, by disposing the auxiliary light source unit 30 on the back side of the plate-like portion, it is possible to irradiate above the ceiling or the wall where the emitted light from the main light source unit 10 cannot reach.

The light emitting module 30a of the auxiliary light source unit 30 which is the main structure of this invention is demonstrated in detail below.

2. Detailed composition of the light emitting module 30a

(LED configuration)

Fig. 7 is a schematic diagram of a light emitting module of the auxiliary light source unit in the lighting fixture shown in Fig. 1 .

Linear light source 32a1 includes six white LED33a and blue LED33c each. The linear light source 32b1 includes six bulb color LED33b and orange LED33d each. In this way, the light emission colors of LED33 contained in the light emitting module 30a are four types. The luminous efficiency of white LED33a, bulb color LED33b, blue LED33c, and orange LED33d is 118lm/W, 97lm/W, 26lm/W, 80lm/W, for example. The kind with the highest luminous efficiency among LED33 is white LED33a. Among the linear light sources 32a1 and 32b1 , the linear light source 32a1 whose offset amount from the back surface of the plate-shaped part 5 is larger includes all of the white LEDs 33a with the highest luminous efficiency.

Moreover, the light emission color of the adjacent LED33 contained in each linear light source 32a1, 32b1 differs. Thereby, when adjacent LED33 is turned on simultaneously, the emitted light from the different emission color emitted from adjacent LED33 mixes easily. Therefore, color unevenness of light emitted from the auxiliary light source unit 30 can be suppressed.

(Outgoing light from LED)

However, the emitted light from the LED33 contained in linear light source 32a1, 32b1 differs in irradiation range by the difference of the offset amount from the back surface of the plate-shaped part 5. As shown in FIG. This will be described using a cross-sectional view showing the effect of the lighting fixture. La and Lb in FIG. 8 represent the limit outgoing light which is not blocked by the back surface of the plate-shaped part 5 among the outgoing light from white LED33a and bulb color LED33b, respectively. The white LED 33a is included in the linear light source 32a1 with a larger offset from the back surface of the plate-like portion 5, and the bulb color LED 33b is included in the linear light source 32b1 with a smaller offset. The emitted light La from the white LED 33a is directed to the lower side than the emitted light Lb from the bulb color LED 33b. Therefore, the emitted light La from the white LED 33a reaches the upper lower side of the wall 70 than the emitted light Lb from the bulb color LED 33b. In this way, the larger the linear light source 32a1 offset from the back surface of the plate-shaped portion 5, the more the light emitted from the included LEDs 33 toward the top of the wall 70 can be prevented from being blocked by the back surface of the plate-shaped portion 5. In addition, the greater the distance between the lighting fixture 1 and the wall 70 , the more conspicuous this effect becomes. The effects of this configuration will be described in detail below.

3. Effect

Fig. 9 is a diagram showing effects of the lighting fixture shown in Fig. 1 , showing a case where the lighting fixture is attached to a ceiling indoors. (a) of FIG. 9 is a diagram of a comparative example. (b) of FIG. 9 is a figure of the lighting fixture shown in FIG. 1. In the lighting fixture 1000 in the comparative example, in the auxiliary light source unit 1040 , the white LED 33 a is included only in the linear light source 32 b 1 whose offset from the back surface of the plate-like portion 5 is small. In the lighting fixture 1 of the present invention, the white LED 33 a is included only in the linear light source 32 a 1 whose displacement from the back surface of the plate-like portion 5 is large. Except for this point, the lighting fixtures 1 and 1000 have the same configuration.

As shown in (a) of FIG. 9 , in the lighting fixture 1000 , the emitted light from the auxiliary light source unit 1040 reaches the ceiling 71 to the upper end of the wall 70 indicated by L1000 . In addition, the emitted light from the central light emitting module 22 and the main light emitting module 12 reaches the bottom of the wall 70 indicated by L2 to the ground 72 . On the other hand, as shown in FIG. 9( b ), in the lighting fixture 1, the emitted light from the central light emitting module 22 and the main light emitting module 12 reaches the bottom of the wall 70 indicated by L2 as in the case of the lighting fixture 1000. to ground 72. However, the emitted light from the auxiliary light source unit 30 reaches above the ceiling 71 to the wall 70 indicated by L1 over a wider range than that of the lighting fixture 1000 .

As described above, the larger the offset from the rear surface of the plate-shaped portion 5 , the more the linear light source 32 a 1 can suppress the light emitted from the included LED 33 to the upper side of the wall from being blocked by the rear surface of the plate-shaped portion 5 . Specifically, the lower limit of the emitted light from the white LED 33a becomes La shown in FIG. 8 . Here, when the same electric power is supplied to LED33, the brightness|luminance of emitted light becomes large so that white LED33a with high luminous efficiency is high. Therefore, by including the white LED 33a in the linear light source 32a1 with a larger offset from the back surface of the plate-shaped part 5, the brightness of the emitted light from the auxiliary light source unit 30 in the region L1a above the wall in L1 can be improved. get bigger. That is, in the lighting fixture 1, the upper part L1a of the wall 70 can be made brighter. As a result, the user can feel that the brightness of the entire room is improved.

In this way, in the lighting fixture 1 including the main light source unit 10 and the auxiliary light source unit 30 , it is possible to suppress a decrease in brightness due to the blocking of the emitted light from the auxiliary light source unit 30 .

<<Modification>>

A modified example of the auxiliary light source unit of the present invention will be described below using FIGS. 10 and 11 . For modified examples, only the differences between the two will be described, and for common configurations, the same symbols will be used and descriptions will be omitted.

10 and 11 are schematic diagrams of the light emitting module of the auxiliary light source unit in the lighting fixture of the modified example.

1. Composition of linear light source

As shown in (a) of FIG. 10, in the light emitting module 130a, linear light sources 132a1, 132b1 composed of two LED33 groups arranged linearly can be arranged in each arrangement area 132a, 132b. Here, all the white LEDs 33 a are included in the linear light source 132 a 1 whose offset amount from the back surface of the plate-like portion 5 is larger. With this configuration, also in the lighting fixture including the main light-emitting module and the auxiliary light source unit, it is possible to suppress a reduction in brightness due to the blocking of emitted light from the auxiliary light source unit.

As another configuration of the linear light source, each linear light source may be constituted by, for example, three or more linear LED groups. In addition, the arrangement|positioning of LED33 is not limited to linear form, For example, zigzag form, curved form, etc. may be sufficient. In addition, in the above-described embodiments and the like, the linear light sources are arranged on the mounting substrate so that the longitudinal direction of the plurality of linear light sources is parallel to the back surface of the plate-like portion. The "parallel to the back surface of the plate-shaped part" referred to here does not necessarily have to be completely parallel, and it may not be parallel as long as it is within the range of manufacturing errors.

2. Types of LEDs

As shown in (b) of FIG. 10, in the light emitting module 230a, 24 LED33 are comprised by each 12 white LED33a and lightbulb color LED33b. Here, all the white LEDs 33 a are included in the linear light source 232 a 1 whose offset amount from the back surface of the plate-like portion 5 is larger. All of the bulb color LEDs 33b are included in the linear light source 232b1 whose offset amount from the back surface of the plate-like portion 5 is smaller. With this configuration, also in the lighting fixture including the main light-emitting module and the auxiliary light source unit, it is possible to suppress a reduction in brightness due to the blocking of emitted light from the auxiliary light source unit. In this way, the present invention can be applied as long as there are plural types of luminous efficiency of LEDs.

3. The configuration of the LED with the highest luminous efficiency

As shown in (a) of FIG. 11 , in the light emitting module 330a, six white LEDs 33a are included in the linear light source 332a1 whose offset from the rear surface of the plate-shaped part 5 is larger. Moreover, three white LED33a are included in the linear light source 332b1 whose offset amount from the back surface of the plate-shaped part 5 is small. In this way, among the linear light sources 332a1 and 332b1 , the linear light source 332a1 with a larger offset from the rear surface of the plate-like portion 5 contains more white LEDs 33a than the linear light source 332b1 with a smaller offset. . Therefore, with this configuration, in the lighting fixture including the main light emitting module and the auxiliary light source unit, it is also possible to suppress the decrease in brightness caused by the blocking of the emitted light from the auxiliary light source unit.

4. More than two configuration areas

As shown in (b) of FIG. 11 , the light-emitting module 430a has three linear light sources 432a1, 432b1, and 432c1 in descending order of the offset from the back surface of the plate-shaped part 5. Six white LEDs 33a are included in the offset. Among the linear light sources 432a1 with the largest displacement. Moreover, three white LED33a are contained in the center linear light source 432b1. In addition, one white LED 33a is included in the linear light source 432c1 with the smallest shift amount. In this way, among the linear light sources 432a1, 432b1, and 432c1, the larger the offset amount from the back surface of the plate-shaped part 5, the more white LEDs 33a are arranged. Therefore, with this configuration, in a lighting fixture including the main light-emitting module and the auxiliary light source unit, it is possible to provide a lighting device that suppresses reduction in brightness due to blocking of emitted light from the auxiliary light source unit.

In addition, the effect of the present invention is most remarkable in a configuration in which the linear light source with a larger offset from the back surface of the plate-like portion 5 includes more white LEDs. However, the structure of the lighting fixture of this invention is not limited to this. For example, among at least one group of adjacent linear light sources among the three linear light sources, more white LEDs 33a are included in the linear light sources whose offset from the back surface of the plate-like portion 5 is larger, and white LEDs 33a are included in the remaining linear light sources. The same number of white LEDs 33a is included in the adjacent linear light sources of the same group, so that the above-mentioned effect can also be achieved.

5. Installation substrate and configuration area

In the above-described embodiments and the like, the mounting substrate has a rectangular shape. However, it is not limited to this, and other shapes such as elliptical shapes or other polygonal shapes may be used. In addition, the arrangement area is not limited to a rectangular shape, and may be in another shape such as an oval shape or another polygonal shape. The shape of the mounting substrate and the shape of the placement substrate can be combined arbitrarily. In addition, the number of arrangement areas is not limited to 2 or 3, as long as it is plural.

6. Other

As mentioned above, although the structure of the lighting fixture of this invention was demonstrated based on embodiment and a modification, this invention is not limited to said embodiment and its modification. For example, partial configurations of the above-described embodiments and modifications thereof may be appropriately combined. In addition, the material, numerical value, etc. which were described in the above-mentioned embodiment have shown the preferable example, and are not limited to this. Furthermore, the structure can be suitably changed in the range which does not deviate from the technical idea of this invention.

(auxiliary light source unit)

In the above-described embodiment and the like, four auxiliary light source units are provided. However, it is not limited thereto, and the number of auxiliary light source units is not limited to four, and any number can be provided.

(light emitting element)

In the above-described embodiments and the like, white LEDs have been mentioned as LEDs having the highest luminous efficiency, and the arrangement of white LEDs has been described. However, it is not limited to white LEDs, and the present invention can be applied to the arrangement of LEDs with the highest luminous efficiency. In addition, the light-emitting element of the present invention is not limited to LEDs. The light emitting element may also be, for example, an LD (laser diode) or an EL element (electroluminescent element).

(electrical connection)

In the above-mentioned embodiments, the LEDs are connected in series according to the emitted light colors, but the present invention is not limited thereto. For example, if a plurality of linearly arranged LEDs included in each linear light source are respectively electrically connected in series, and each linear light source is electrically connected in parallel to each other, the LEDs can be individually made to emit light in each arrangement area.

(lighting fixtures)

In the said embodiment etc., the ceiling lamp is used as a lighting fixture. However, it is not limited thereto, and the present invention can be applied to, for example, lighting fixtures for buildings other than ceiling lamps such as downlights, and lighting fixtures other than lighting fixtures for buildings such as backlights.

Explanation of symbols

1. 900, 1000 lighting fixtures

3 appliance body

5 plates

7 crown

10 main light source unit

20 center light source unit

30 auxiliary light source units

33 LEDs

33a White LED

33b bulb color LED

33c blue LED

33d orange LED

Claims (8)

1. A lighting fixture, characterized in that it has: The main body of the appliance has a plate-like portion made of non-translucent material; a main light source unit disposed on the front side of the plate-like portion; and an auxiliary light source unit disposed on the back side of the plate-like portion, The auxiliary light source unit has a plurality of linear light sources, The plurality of linear light sources have their respective longitudinal directions parallel to the back surface of the plate-shaped portion, and are arranged at positions where the offset amounts of the linear light sources from the back surface of the plate-shaped portion are different from each other, Each of the linear light sources is composed of an arrangement of a plurality of light emitting elements, and the plurality of linear light sources include various light emitting elements with different luminous efficiencies, Of the at least two linear light sources among the plurality of linear light sources, the linear light source having a larger offset from the rear surface of the plate-shaped portion contains more light-emitting elements of the highest light-emitting efficiency type. 2. The lighting fixture according to claim 1, Among the plurality of linear light sources, the linear light source having the largest offset from the back surface of the plate-like portion includes the most light-emitting elements of the type with the highest luminous efficiency. 3. The lighting fixture according to claim 1, Among all the plurality of linear light sources, the linear light source having a greater offset from the back surface of the plate-shaped portion contains more light-emitting elements of the type with the highest luminous efficiency. 4. The lighting fixture according to claim 1, Adjacent light-emitting elements included in each of the linear light sources have different light-emitting colors. 5. The lighting fixture according to claim 1, The plurality of light emitting elements contained in each of the linear light sources are respectively electrically connected in series, The linear light sources are electrically connected in parallel with each other. 6. The lighting fixture as claimed in claim 1, The luminous color of the light-emitting element with the highest luminous efficiency is white. 7. The lighting fixture of claim 1, The auxiliary light source unit includes a cover provided to cover the plurality of linear light sources and having light diffusing properties. 8. An auxiliary light source unit used in a lighting fixture provided on the back side of the plate-shaped portion in a state in which its longitudinal direction is parallel to the back surface of the plate-shaped portion, the lighting fixture comprising: a fixture main body having a non-transparent The plate-shaped part made of optical material; and the main light source unit, arranged on the front side of the plate-shaped part, The auxiliary light source unit is characterized in that, With multiple linear light sources, The plurality of linear light sources are arranged at positions with different offsets between the linear power sources and the back surface of the plate-shaped part, Each of the linear light sources is composed of an arrangement of a plurality of light emitting elements, and the plurality of linear light sources include various light emitting elements with different luminous efficiencies, Of the at least two linear light sources among the plurality of linear light sources, the linear light source having a larger offset from the back surface of the plate-shaped portion contains more light-emitting elements of the type with the highest luminous efficiency. .