Lighting device and method for manufacturing lighting device

Abstract

Provided are a lighting device and a method for manufacturing the lighting device, the lighting device being capable of exhibiting unbalanced, flowable, and jumping effects, the lighting device being provided with a light source unit (2) having a plurality of LED elements (21), the light source unit (2) having uneven brightness of an irradiation surface irradiated by the light source unit (2).

Description

Technical Field

[0001] The present invention relates to a lighting fixture and a method for manufacturing the lighting fixture, and in particular to a lighting fixture having a plurality of light sources and a method for manufacturing the lighting fixture. Background Art

[0002] Japanese Patent Publication No. 2014-170712 (hereinafter referred to as "Document 1") discloses a lighting device (lighting fixture) having a plurality of light sources. In the lighting device of Document 1, LEDs (LED elements) are arranged as light sources so that the light emission of the light sources rotates with respect to the rotation axis of the cover of the lighting device.

[0003] Recently, the brightness of the illuminated surface and space illuminated by the lighting fixture is controlled to achieve effects such as unevenness, fluidity, and dynamism. However, the lighting device of Document 1 may not achieve sufficient effects. Summary of the invention

[0004] Problems to be solved by the invention

[0005] An object of the present disclosure is to provide a lighting fixture and a method for manufacturing the lighting fixture that can achieve effects of imbalance, fluidity, and dynamism.

[0006] Means used to solve problems

[0007] A lighting fixture according to one aspect of the present disclosure includes a light source unit having a plurality of LED elements, and a surface illuminated by the light source unit has uneven brightness.

[0008] A method for manufacturing a lighting fixture according to a technical solution of the present disclosure includes a module manufacturing step and a module configuration step. In the module manufacturing step, a plurality of LED elements are unevenly configured on an arc-shaped substrate in at least one of the circumferential direction or radial direction of the arc to manufacture a plurality of light source modules. In the module configuration step, the plurality of light source modules manufactured in the module manufacturing step are configured in a circular shape.

[0009] Another technical solution of the present disclosure is a method for manufacturing a lighting fixture, which includes a module manufacturing step and a module configuration step. In the module manufacturing step, a plurality of LED elements are unevenly configured on a strip-shaped substrate along the long axis direction of the substrate to manufacture a plurality of light source modules. In the module configuration step, the plurality of light source modules manufactured in the module manufacturing step are arranged in the short axis direction of the substrate.

[0010] Effects of the Invention

[0011] According to a lighting fixture and a method for manufacturing the lighting fixture according to a technical solution of the present disclosure, it is possible to present effects for obtaining imbalance, fluidity, and a sense of dynamism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded perspective view of the lighting fixture according to Embodiment 1.

[0013] Figure 2 This is a plan view of a light source unit in the lighting fixture according to Embodiment 1.

[0014] Figure 3 This is a plan view of a light source unit in a lighting fixture according to Embodiment 3.

[0015] Figure 4 This is a plan view of a light source unit in a lighting fixture according to a modified example of Embodiment 3.

[0016] Figure 5 This is a plan view of a light source unit in a lighting fixture according to a fourth embodiment.

[0017] Figure 6 This is a plan view of a light source unit in a lighting fixture according to Embodiment 5.

[0018] Figure 7 This is a plan view of a light source unit in a lighting fixture according to Embodiment 6.

[0019] Figure 8 is a partial cross-sectional view of a light source unit in a lighting fixture according to Embodiment 6, and Figure 7 Corresponding to the X1-X1 section.

[0020] Description of the accompanying drawings

[0021] 100 lighting fixture; 2, 2a, 2b, 2c light source unit; 20, 20c, 20f, 20g, 20i, 25, 25c, 26, 26c, 26d, 27, 27a, 27b, 27c light source module; 20a, 20d, 20g, 25a, 26a light source module (first module); 20b, 20e, 20h, 25b, 26b light source module (second module); 21, 21e LED element (first LED element); 21a, 21c LED element (first color LED element); 21b, 21d LED element (second color LED element); 22, 22a mounting substrate (substrate); 24 LED element (second LED element); 41 lens; 41a lens (first lens); 41b lens (second lens); D2 direction (major axis direction); D3 direction (short axis direction). DETAILED DESCRIPTION

[0022] Hereinafter, lighting fixtures according to Embodiments 1 to 6 and their modifications will be described with reference to the accompanying drawings. In the following Embodiments 1 to 6 and their modifications, the drawings referred to are schematic drawings, and the sizes and thickness ratios of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0023] (Implementation Method 1)

[0024] 1. The overall structure of the lighting fixture

[0025] like Figure 1 As shown, the lighting fixture 100 according to the first embodiment includes a main body 1, a light source unit 2, and a cover 3. The lighting fixture 100 is installed on a ceiling, for example.

[0026] The lighting fixture 100 is, for example, circular. Hereinafter, the direction in which the lighting fixture 100 is mounted on the ceiling is referred to as direction D1. In addition, when viewed from the direction D1, the lighting fixture 100 is oriented with the central axis A1 (see Figure 2 ) is rotationally symmetric with respect to the reference.

[0027] 2. Structure of each part of the lighting fixture

[0028] (1) Main body and cover

[0029] The main body 1 is formed into a disk shape by, for example, a metal plate. A power supply unit that can be electrically and mechanically detachably connected to a ceiling light cord box is disposed in the central portion of the main body 1. The power supply unit has a function of converting the AC power supplied from the power cord via the ceiling light cord box into DC power supplied to the light source unit. The light source unit 2 is mounted on the lower surface of the main body 1. The light source unit 2 is centered on a central axis A1 (refer to Figure 2 ) is a hollow disk centered on the

[0030] The cover 3 is formed of a light-transmitting synthetic resin such as acrylic resin or polycarbonate resin into a cylindrical shape with an upper opening. The cover 3 accommodates the light source unit 2 inside and is detachably mounted on the lower surface of the main body 1 .

[0031] (2) Light source unit and light source module

[0032] like Figure 2 As shown, the light source unit 2 has multiple (in Figure 2 Each of the light source modules 20 has a plurality of (in Figure 2 The light source unit 2 includes a plurality of LED elements 21 (24 in the example) and a mounting substrate 22 bent into an arc shape. Each of the plurality of LED elements 21 is, for example, a packaged white LED for lighting. That is, the light source unit 2 includes a plurality of LED elements 21. The plurality of light source modules 20 are arranged on a circle centered on the central axis A1.

[0033] The light source modules 20 a to 20 c include the same number of LED elements 21 as each other, and the arrangements of the LED elements 21 are different.

[0034] (2.1) Circuit structure of light source module

[0035] The light source module 20 includes a plurality of LED elements 21. More specifically, the light source module 20 includes a light emitting circuit including a plurality of LED elements 21. The light emitting circuit includes, for example, two or more series circuits connected in parallel. Each of the two or more series circuits includes two or more LED elements 21 connected in series. For example, the light emitting circuit of the light source module 20b includes, for example, a series circuit 23a in which nine LED elements 21 are connected in series, a series circuit 23b in which eight LED elements 21 are connected in series, and a series circuit 23c in which seven LED elements 21 are connected in series. The series circuit 23a, the series circuit 23b, and the series circuit 23c are connected in parallel with each other.

[0036] Hereinafter, the connection form of the plurality of LED elements 21 in the light-emitting circuit of the light source module 20b as described above is referred to as the circuit structure of the light-emitting circuit of the light source module 20b. The light source modules 20a, 20b, and 20c, for example, have the same circuit structure of the light-emitting circuit. That is, the light-emitting circuits of the light source modules 20a, 20b, and 20c have the same electrical characteristics. Here, the same electrical characteristics of the light-emitting circuits of the plurality of light source modules 20 means that the plurality of light source modules 20 can be exchanged in the lighting fixture 100.

[0037] (2.2) LED component configuration

[0038] In the light source module 20, the plurality of LED elements 21 are unevenly arranged. Here, the plurality of LED elements 21 are unevenly arranged, which means that the light source module 20 is divided into a plurality of (in Figure 2 In the case where there are three regions AR1, AR2 and AR3 in the light source module 20a, each of the plurality of regions AR1 to AR3 includes at least one LED element 21, and the number of the plurality of LED elements 21 included in each of the plurality of regions AR1 to AR3 is inconsistent. Figure 2The regions AR1, AR2, and AR3 shown are identical in shape and area. Here, dividing the light source module 20 into a plurality of regions AR1 to AR3 means that the plurality of regions AR1 to AR3 are arranged in such a manner that any position in the light source module 20 belongs to any one of the regions AR1 to AR3. The plurality of regions AR1 to AR3 are arranged, for example, in a circumferential direction centered on the central axis A1. Here, the number of LED elements 21 included in each of the regions AR1, AR2, and AR3 is inconsistent, which means that the number of LED elements 21 included in the region AR1 is different from at least one of the number of LED elements 21 included in the region AR2 and the number of LED elements 21 included in the region AR3. That is, in the light source module 20, when the light source module 20 is divided into a plurality of regions of the same shape including one or more LED elements 21, the density of the LED elements 21 in at least one region is different from the density of the LED elements 21 in the other regions.

[0039] In addition, in the light source module 20, the configuration of the LED elements 21 is not symmetrical and periodic. Here, in the light source module 20, the configuration of the LED elements 21 is not symmetrical, which means that the configuration of all the LED elements 21 in the light source module 20 is neither linearly symmetrical nor rotationally symmetrical, and does not exclude the case where a part of the configuration of the LED elements 21 is linearly symmetrical or rotationally symmetrical. In other words, the configuration of the LED elements 21 is not symmetrical, which means that a part of the configuration of the LED elements 21 is allowed to be linearly symmetrical or rotationally symmetrical. Similarly, in the light source module 20, the configuration of the LED elements 21 is not periodic, which means that the configuration of all the LED elements 21 in the light source module 20 cannot be expressed by the repetition of one pattern, and does not exclude the case where a part of the configuration of the LED elements 21 is periodic.

[0040] Thus, in the light source unit 2, the plurality of LED elements 21 are arranged unevenly. Thus, the brightness of the illuminated surface illuminated by the light source unit 2 can be made uneven. Therefore, by making the brightness of the space illuminated by the lighting fixture 100 uneven, an effect of providing imbalance, fluidity, and a sense of dynamism can be presented.

[0041] Hereinafter, a specific example in which the LED elements 21 are arranged unevenly will be described in more detail.

[0042] For example, in the light source module 20, a portion of the plurality of LED elements 21 is arranged on imaginary arcs C1, C2, and C3 centered on the central axis A1. In addition, in the light source module 20, the remaining portion of the plurality of LED elements 21 is not located at any position on the imaginary arcs C1, C2, and C3. Thus, in the light source module 20, when the light source module 20 is divided into a plurality of regions of the same shape including one or more LED elements 21, the density of the LED elements 21 in at least one region is different from the density of the LED elements 21 in the other regions.

[0043] Furthermore, for example, the spacing between the plurality of LED elements 21 located on the imaginary arc C1 is uneven. In other words, among the plurality of LED elements 21 arranged on the imaginary arc C1, the angle formed by two line segments connecting two adjacent LED elements 21 in the extension direction of the imaginary arc C1 with the central axis A1 (hereinafter referred to as the "central angle") is not certain. Similarly, the spacing between the plurality of LED elements 21 located on the imaginary arc C2 is uneven. Furthermore, the spacing between the plurality of LED elements 21 located on the imaginary arc C3 is also uneven. Thus, in the light source module 20, when the light source module 20 is divided into a plurality of regions of the same shape including one or more LED elements 21, the density of the LED elements 21 in at least one region is different from the density of the LED elements 21 in other regions.

[0044] In addition, the configurations of the LED elements 21 of the light source modules 20a to 20c are different from each other. Here, "the configurations of the LED elements 21 are different between the two light source modules 20" means that when the mounting substrates 22 are overlapped in the two light source modules 20, there is at least one non-overlapping LED element 21. One module among the light source modules 20a to 20c corresponds to the first module, and the other module among the light source modules 20a to 20c corresponds to the second module. As a result, the possibility of regularity in the configuration of the plurality of LED elements 21 in the light source unit 2 is reduced, and the configuration of the LED elements 21 can be easily made uneven. In addition, by changing the configuration of the light source modules 20a to 20c in the light source unit 2, it becomes easy to implement a light source unit 2 having a different configuration of the LED elements 21.

[0045] 3. Manufacturing method of lighting fixture

[0046] Hereinafter, a method for manufacturing the lighting fixture 100 will be described.

[0047] The method for manufacturing the lighting fixture 100 includes a mounting substrate preparing step, a module manufacturing step, a module configuring step, and a lighting fixture assembling step.

[0048] In the mounting substrate preparation step, mounting substrates 22 on a plurality of arcs are prepared.

[0049] In the module manufacturing step, a plurality of light source modules 20 are manufactured. The plurality of light source modules 20 are manufactured by arranging a plurality of LED elements 21 unevenly in the circumferential direction and radial direction of the arc on an arc-shaped mounting substrate 22. In more detail, an arrangement pattern of the LED elements 21 that satisfies the following conditions (1) and (2) is used. (1) Two or more of the plurality of LED elements 21 are arranged on an arc centered on the central axis A1, and two or more of the plurality of LED elements 21 are not arranged on the arc. (2) Among the plurality of LED elements 21 arranged in the circumferential direction centered on the central axis A1, the center angle between two adjacent LED elements 21 is not necessarily.

[0050] In the module manufacturing step, multiple (in Figure 2 In the module manufacturing step, for example, three LED configuration patterns are used to manufacture light source modules 20a, 20b, and 20c, respectively. More specifically, in the module manufacturing step, a plurality of LED elements 21 are connected to each other. Figure 2 The light source modules 20a are similarly arranged on the mounting substrate 22, thereby manufacturing a plurality of light source modules 20a. Similarly, in the module manufacturing step, by Figure 2 The light source modules 20b are similarly arranged on the mounting substrate 22, thereby manufacturing a plurality of light source modules 20b. Similarly, in the module manufacturing step, by Figure 2 The light source modules 20 c are similarly arranged on the mounting substrate 22 , thereby manufacturing a plurality of light source modules 20 c .

[0051] In addition, during the module configuration step, multiple (in Figure 2 More specifically, the light source modules 20a, 20b, and 20c manufactured in the module manufacturing step are mounted one by one on the main body 1, thereby manufacturing the light source unit 2 mounted on the main body 1.

[0052] In the lighting fixture assembly step, the power supply unit and the cover 3 are mounted on the main body 1. More specifically, the power supply unit and the cover 3 are mounted on the main body 1 to which the light source unit 2 is mounted. In this way, the lighting fixture 100 is manufactured.

[0053] 4. Effect

[0054] The lighting fixture 100 according to Embodiment 1 includes a light source unit 2 having a plurality of LED elements 21. The brightness of the illuminated surface illuminated by the light source unit 2 is non-uniform. Therefore, the brightness of the space illuminated by the lighting fixture 100 can be made non-uniform, and an effect of providing imbalance, fluidity, and dynamism can be presented.

[0055] In the lighting fixture 100 according to Embodiment 1, the plurality of LED elements 21 are arranged unevenly. Thus, in the lighting fixture 100, light can be emitted unevenly from the light source unit 2, and the brightness of the illuminated surface illuminated by the light source unit 2 can be easily made uneven.

[0056] In the lighting fixture 100 according to Embodiment 1, the light source unit 2 includes a plurality of light source modules 20. Each of the plurality of light source modules 20 includes two or more LED elements among the plurality of LED elements 21. Thus, in the lighting fixture 100, by arranging the LED elements 21 unevenly in the light source modules 20, it is easy to arrange the plurality of LED elements 21 unevenly in the lighting fixture 100.

[0057] In the lighting fixture 100 according to Embodiment 1, the plurality of light source modules 20 include a light source module 20a and a light source module 20b. The light source module 20a and the light source module 20b have different arrangements of two or more LED elements 21. Thus, in the lighting fixture 100, the possibility of regularity in the arrangement of the plurality of LED elements 21 in the light source unit 2 is reduced, and the arrangement of the LED elements 21 is easily made uneven.

[0058] In addition, in the lighting fixture 100 according to Embodiment 1, each of the plurality of light source modules 20 has a light emitting circuit including a part of the plurality of LED elements 21. The connection structures of the light emitting circuits are mutually identical in the plurality of light source modules 20. Thus, in the lighting fixture 100, the plurality of light source modules 20 can be replaced in the light source unit 2. Therefore, by changing the combination of the plurality of light source modules 20, the arrangement of the plurality of LED elements 21 in the light source unit 2 can be easily changed.

[0059] In addition, the manufacturing method of the lighting fixture 100 related to Embodiment 1 includes a module manufacturing step and a module configuration step. In the module manufacturing step, on the arc-shaped mounting substrate 22, a plurality of LED elements 21 are unevenly arranged in at least one of the circumferential direction or radial direction of the arc, and a plurality of light source modules 20 are manufactured. In the module configuration step, the plurality of light source modules 20 manufactured in the module manufacturing step are configured in a circumferential shape. As a result, the LED elements 21 are unevenly arranged in the light source modules 20, so it is easy to make the arrangement of the LED elements 21 uneven in the lighting fixture 100. In addition, by manufacturing a plurality of light source modules 20 with mutually different arrangements of the LED elements 21 in the module manufacturing step, it is easy to manufacture a plurality of lighting fixtures 100 with different arrangements of the LED elements 21.

[0060] (Implementation Method 2)

[0061] 1. Structure

[0062] In the lighting fixture 100 according to the first embodiment, the plurality of light source modules 20 included in the light source unit 2 have different LED arrangement patterns.

[0063] On the other hand, in the lighting fixture 100 according to the second embodiment, the light source unit 2 includes a plurality of light source modules 20 having the same LED arrangement pattern.

[0064] In an example of the lighting fixture 100 according to Embodiment 2, the light source unit 2 includes one light source module 20a and two light source modules 20b. In this case, the LED elements 21 are unevenly arranged in each of the light source modules 20a and 20b. Therefore, in the light source unit 2, the LED elements 21 are unevenly arranged.

[0065] Similarly, in an example of the lighting fixture 100 according to Embodiment 2, the light source unit 2 includes one light source module 20b and two light source modules 20c. In this case, the LED elements 21 are also unevenly arranged in each of the light source modules 20b and 20c. Therefore, in the light source unit 2, the LED elements 21 are unevenly arranged.

[0066] That is, in the lighting fixture 100 according to Embodiment 2, in the light source unit 2, the number of types of LED arrangement patterns in the light source module 20 is less than the number of light source modules 20 included in the light source unit 2. In other words, the number of types of lighting fixtures 100 having different LED arrangement patterns is greater than the number of types of LED arrangement patterns in the light source module 20. Therefore, in the lighting fixture 100 according to Embodiment 2, by increasing the number of types of LED arrangement patterns in the light source module 20, the number of types of lighting fixtures 100 having different LED arrangement patterns can be increased dramatically.

[0067] In the light source unit 2 , when arranging the plurality of light source modules 20 , it is preferable that the light source modules 20 be arranged so as not to be rotationally symmetrical. Thus, in the light source unit 2 , the symmetry of the arrangement of the LED elements 21 can be reduced.

[0068] In addition, in the manufacturing method of the lighting fixture 100 related to Embodiment 2, in the module configuration step, a plurality of light source modules 20 having the same configuration of the LED elements 21 are configured. At this time, as described above, the light source modules 20 are configured in a manner that is not rotationally symmetrical. More specifically, two or more light source modules 20 having different configurations of the LED elements 21 are used for one light source unit 2, and the light source modules 20 are configured in a manner that is not rotationally symmetrical.

[0069] 2. Effect

[0070] In the lighting fixture 100 according to Embodiment 2, the plurality of light source modules 20 include a light source module 20a and a light source module 20b. The light source module 20a and the light source module 20b have different arrangements of two or more LED elements 21. Thus, in the lighting fixture 100, the possibility of regularity in the arrangement of the plurality of LED elements 21 in the light source unit 2 is reduced, and the arrangement of the LED elements 21 is easily made uneven.

[0071] In addition, in the lighting fixture 100 according to Embodiment 2, each of the plurality of light source modules 20 has a light emitting circuit including a part of the plurality of LED elements 21. The connection structures of the light emitting circuits are mutually identical in the plurality of light source modules 20. Thus, in the lighting fixture 100, the plurality of light source modules 20 can be replaced in the light source unit 2. Therefore, by changing the combination of the plurality of light source modules 20, the arrangement of the plurality of LED elements 21 in the light source unit 2 can be easily changed.

[0072] (Implementation 3)

[0073] 1. Structure

[0074] In the lighting fixture 100 according to the first and second embodiments, the light source unit 2 includes a single-color LED element 21 .

[0075] On the other hand, in the lighting fixture 100 according to the third embodiment, the light source unit 2 includes the LED elements 21 of multiple colors. More specifically, the light source unit 2 includes the LED elements 21 of two colors.

[0076] In the lighting fixture 100 according to the third embodiment, Figure 3 As shown, there are multiple (in Figure 3 The light source module 20 includes a plurality of (three in Figure 3 The plurality of LED elements 21 include a plurality of (in Figure 3 12) LED elements 21a and a plurality of (in Figure 3 In the embodiment of the present invention, the light source unit 2 includes at least two LED elements 21a and at least two LED elements 21b. Each of the plurality of LED elements 21a is, for example, a packaged daylight color LED for lighting. Each of the plurality of LED elements 21b is, for example, a packaged incandescent color LED for lighting. That is, the luminous colors of the LED elements 21a and 21b are different from each other. The LED element 21a corresponds to the first color LED element. In addition, the LED element 21b corresponds to the second color LED element. That is, the first color is the daylight color, and the second color is the incandescent color.

[0077] In the plurality of light source modules 20, two or more LED elements 21 are unevenly arranged. More specifically, in the light source module 20, two or more LED elements 21a are unevenly arranged. In addition, two or more LED elements 21b are unevenly arranged. Furthermore, in the light source module 20, the arrangement of the LED elements 21a is different from the arrangement of the LED elements 21b.

[0078] In more detail, the light source unit 2 includes light source modules 20d, 20e and 20f. In each of the light source modules 20d, 20e and 20f, two or more LED elements 21a are unevenly arranged. In addition, the configurations of the LED elements 21a of the light source modules 20d, 20e and 20f are different from each other. In addition, in each of the light source modules 20d, 20e and 20f, two or more LED elements 21b are unevenly arranged. In addition, the configurations of the LED elements 21b of the light source modules 20d, 20e and 20f are different from each other. In addition, in each of the light source modules 20d, 20e and 20f, the configuration of the LED element 21a is different from the configuration of the LED element 21b.

[0079] Thus, in the light source unit 2, the LED elements 21a are arranged unevenly. Therefore, the brightness of the daylight color light can be made uneven for the space illuminated by the lighting fixture 100. In addition, in the light source unit 2, the LED elements 21b are arranged unevenly. Therefore, the brightness of the incandescent color light can be made uneven for the space illuminated by the lighting fixture 100.

[0080] Furthermore, in the light source unit 2, the arrangement of the LED element 21a is different from the arrangement of the LED element 21b. Therefore, for the space illuminated by the lighting fixture 100, the degree of mixing of the daylight color light and the incandescent color light can be made uneven. Thus, the color of the space illuminated by the lighting fixture 100 can be made uneven, and the effect of imbalance, fluidity, and dynamism can be further enhanced.

[0081] 2. Effect

[0082] In the lighting fixture 100 related to Embodiment 3, the plurality of LED elements 21 include more than two LED elements 21a and more than two LED elements 21b. The luminous color of the LED element 21b is different from the luminous color of the LED element 21a. The LED element 21a and the LED element 21b are both unevenly arranged. In the light source unit 2, the arrangement of the LED element 21a is different from the arrangement of the LED element 21b. Thus, for the space illuminated in the lighting fixture 100, the brightness and color can be made uneven. Therefore, in the space illuminated in the lighting fixture 100, the effect of providing imbalance, fluidity and dynamism can be further enhanced.

[0083] (Variation Example)

[0084] 1. Structure

[0085] In the lighting fixture 100 according to the modification of the third embodiment, the light source unit 2 includes LED elements 21 of three colors.

[0086] In the lighting fixture 100 according to the modification of the third embodiment, Figure 4 As shown, there are multiple (in Figure 3 The light source module 20 includes a plurality of (three in Figure 4 The plurality of LED elements 21 include a plurality of (in Figure 4 8) LED elements 21c, multiple (in Figure 4 8) LED elements 21d and a plurality of (in Figure 4 Each of the plurality of LED elements 21c is, for example, a packaged blue LED for lighting. Each of the plurality of LED elements 21d is, for example, a packaged green LED for lighting. Each of the plurality of LED elements 21e is, for example, a packaged red LED for lighting. That is, one of the LED elements 21c to 21e corresponds to the first color LED element, and the other one (one of the other two) corresponds to the second color LED element.

[0087] In the plurality of light source modules 20, two or more LED elements 21 are unevenly arranged. More specifically, in the light source module 20, two or more LED elements 21c are unevenly arranged. In addition, two or more LED elements 21d are unevenly arranged. In addition, two or more LED elements 21e are unevenly arranged. Furthermore, in the light source module 20, the arrangement of the LED element 21c, the arrangement of the LED element 21d, and the arrangement of the LED element 21e are different from each other.

[0088] In more detail, the light source unit 2 includes light source modules 20g, 20h and 20i. In each of the light source modules 20g, 20h and 20i, more than two LED elements 21c are unevenly arranged. In addition, the configurations of the two or more LED elements 21c of the light source modules 20g, 20h and 20i are different from each other. In addition, in each of the light source modules 20g, 20h and 20i, more than two LED elements 21d are unevenly arranged. In addition, the configurations of the LED elements 21d of the light source modules 20g, 20h and 20i are different from each other. In addition, in each of the light source modules 20g, 20h and 20i, more than two LED elements 21e are unevenly arranged. In addition, the configurations of the LED elements 21e of the light source modules 20g, 20h and 20i are different from each other. In addition, in each of the light source modules 20g, 20h and 20i, the arrangement of the LED element 21c, the arrangement of the LED element 21d and the arrangement of the LED element 21e are different from each other. In addition, in each of the light source modules 20g, 20h and 20i, the arrangement of the LED element 21c, the arrangement of the LED element 21d and the arrangement of the LED element 21e are different from each other.

[0089] Thus, in the light source unit 2, the LED elements 21c are arranged unevenly. Therefore, for the space illuminated by the lighting fixture 100, the brightness of the blue light can be made uneven. In addition, in the light source unit 2, the LED elements 21d are arranged unevenly. Therefore, for the space illuminated by the lighting fixture 100, the brightness of the green light can be made uneven. In addition, in the light source unit 2, the LED elements 21e are arranged unevenly. Therefore, for the space illuminated by the lighting fixture 100, the brightness of the red light can be made uneven. Furthermore, in the light source unit 2, the arrangement of the LED elements 21c, the arrangement of the LED elements 21d, and the arrangement of the LED elements 21e are different from each other. Therefore, for the space illuminated by the lighting fixture 100, the color of the illumination light can be made uneven. Thus, for the space illuminated by the lighting fixture 100, both the brightness and the color can be made uneven, and the effect of providing imbalance, fluidity, and dynamism can be further enhanced.

[0090] 2. Effect

[0091] In the lighting fixture 100 of the variation of Embodiment 3, the plurality of LED elements 21 include more than two LED elements 21c, more than two LED elements 21d, and more than two LED elements 21e. The luminous color of the LED element 21c, the luminous color of the LED element 21d, and the luminous color of the LED element 21e are different from each other. The LED element 21c, the LED element 21d, and the LED element 21e are all arranged unevenly. In the light source unit 2, the arrangement of the LED element 21c, the arrangement of the LED element 21d, and the arrangement of the LED element 21e are different from each other. Thus, for the space illuminated in the lighting fixture 100, the brightness and color can be made uneven. Therefore, in the space illuminated in the lighting fixture 100, the effect of providing imbalance, fluidity, and dynamism can be further enhanced.

[0092] (Implementation 4)

[0093] 1. Structure

[0094] (1) Light source unit

[0095] In the lighting fixture 100 according to the fourth embodiment, the light source unit 2a includes a plurality of uniformly arranged LED elements 24 in addition to the non-uniformly arranged LED elements 21. The LED elements 21 correspond to the first LED elements, and the LED elements 24 correspond to the second LED elements.

[0096] like Figure 5 As shown, the light source unit 2a has multiple (in Figure 5 There are 3) light source modules 25. Each of the light source modules 25 includes a plurality of LED elements 21, a plurality of LED elements 24, and a mounting substrate 22 bent into an arc shape. Each of the plurality of LED elements 21 is, for example, a packaged white LED for lighting. In addition, each of the plurality of LED elements 24 is, for example, a packaged white LED for lighting. That is, the light source unit 2a includes a plurality of LED elements 21 and a plurality of LED elements 24. The plurality of light source modules 20 are arranged on a circle centered on the central axis A1. Here, the luminous color of the LED element 21 and the luminous color of the LED element 24 may be the same or different. The luminous color of the LED element 21 and the luminous color of the LED element 24 are both, for example, white.

[0097] The lighting fixture 100 has a control circuit for controlling the lighting of the light source unit 2a. The control circuit can control the lighting of the plurality of LED elements 21 together. In addition, the control circuit can control the lighting of the plurality of LED elements 24 together. Here, the control circuit controls the lighting of the plurality of LED elements 21 and the plurality of LED elements 24 separately. Specifically, for example, the control circuit includes a circuit for controlling the application of voltage to the plurality of LED elements 21 and a circuit for controlling the application of voltage to the LED elements 24.

[0098] The control circuit of the lighting fixture 100 receives an input from the user to turn on one of the plurality of LED elements 21 and the plurality of LED elements 24. The control circuit turns on one of the plurality of LED elements 21 and the plurality of LED elements 24 based on an instruction received from the user via a remote controller, for example. That is, the lighting fixture 100 can control which of the plurality of LED elements 21 and the plurality of LED elements 24 is to be illuminated based on the user's selection. In addition, the control circuit of the lighting fixture 100 may also have, for example, a DIP switch (dual in-line package switch).

[0099] (2) Light source module

[0100] (2.1) Circuit structure of light source module

[0101] The light source modules 25a to 25c include the same number of LED elements 21 and the same number of LED elements 24. The light source modules 25a to 25c are different in arrangement of the LED elements 21. The light source modules 25a to 25c are the same in arrangement of the LED elements 24.

[0102] The light source module 25 includes a plurality of Figure 5 15) LED elements 21 and a plurality of (in Figure 5 In the embodiment of the present invention, the light source module 25 includes a first light emitting circuit including a plurality of LED elements 21 and a second light emitting circuit including a plurality of LED elements 24. In other words, in the light source module 25, the LED element 21a and the LED element 21b are included in different light emitting circuits. For example, in the plurality of light source modules 25, the circuit structure of the first light emitting circuit is the same. In addition, for example, in the plurality of light source modules 25, the circuit structure of the second light emitting circuit is the same.

[0103] The plurality of first light emitting circuits of the plurality of light source modules 25 are controlled to be lit together by the control circuit of the lighting fixture 100. Similarly, the plurality of second light emitting circuits of the plurality of light source modules 25 are controlled to be lit together by the control circuit of the lighting fixture 100. Thus, in the light source unit 2a, either the plurality of LED elements 21 or the plurality of LED elements 24 can be lit.

[0104] (2.2) LED component configuration

[0105] In the light source module 25, two or more LED elements 21 are unevenly arranged. On the other hand, in the light source unit 2a, two or more LED elements 24 are evenly arranged. In addition, the "two or more LED elements 24 are evenly arranged" mentioned here means that most of the plurality of LED elements 24 are evenly arranged, and also includes the case where the number of unevenly arranged LED elements 24 is small (for example, less than 10% of the total number of LED elements 24). For example, the case where several of the LED elements 24 have positional deviations equivalent to less than one LED element 24 in order to avoid screws or connectors used to fix the light source module 25 is included in the "LED elements 24 are evenly arranged".

[0106] More specifically, in the light source unit 2 a , the plurality of LED elements 24 are arranged at equal intervals on imaginary arcs C1 , C2 , and C3 centered on the central axis A1 .

[0107] Specifically, in the light source unit 2a, more than two LED elements 24 on the imaginary arc C1 are arranged at equal intervals. In more detail, among the more than two LED elements 24 on the imaginary arc C1, the center angles of two LED elements 24 adjacent to each other in the extension direction of the imaginary arc C1 are constant. Similarly, in the light source unit 2a, more than two LED elements 24 on the imaginary arc C2 are arranged at equal intervals. In addition, in the light source unit 2a, more than two LED elements 24 on the imaginary arc C3 are evenly arranged.

[0108] Thus, in the lighting fixture 100, when the plurality of LED elements 21 emit light, the brightness of the illuminated surface illuminated by the light source unit 2a can be made uneven. Therefore, the brightness of the space illuminated by the lighting fixture 100 can be made uneven, and an effect of providing imbalance, fluidity, and dynamism can be presented. On the other hand, in the lighting fixture 100, when the plurality of LED elements 24 emit light, the brightness of the illuminated surface illuminated by the light source unit 2a can be made uniform. Therefore, when it is necessary to evenly illuminate the space illuminated by the lighting fixture 100, there is no need to use another lighting fixture.

[0109] 2. Effect

[0110] In the lighting fixture 100 related to Embodiment 4, the light source unit 2 also includes a plurality of LED elements 24 that are different from the plurality of LED elements 21. The plurality of LED elements 24 are uniformly arranged. The lighting fixture 100 can control which of the plurality of LED elements 21 and the plurality of LED elements 24 is to be illuminated based on the user's selection. Thus, in the lighting fixture 100, when the plurality of LED elements 21 are illuminated, the brightness of the space illuminated by the lighting fixture 100 can be made uneven, so that an effect of providing imbalance, fluidity, and dynamism can be presented. On the other hand, in the lighting fixture 100, when the plurality of LED elements 24 are illuminated, the space illuminated by the lighting fixture 100 can be uniformly illuminated. Therefore, in one lighting fixture 100, the presence or absence of the effect of providing imbalance, fluidity, and dynamism can be easily switched.

[0111] (Implementation method 5)

[0112] 1. Structure

[0113] (1) Structure of lighting fixtures

[0114] The lighting fixtures 100 of each of the first to fourth embodiments are circular in plan view from the direction D1. In contrast, the lighting fixture 100 of the fifth embodiment is square in plan view from the direction D1. Therefore, in the lighting fixture 100 of the fifth embodiment, the main body 1 and the cover 3 are square in plan view from the direction D1.

[0115] like Figure 6 As shown, the light source unit 2b has multiple (in Figure 6 The light source modules 26 are 8 in the figure. Each of the light source modules 26 includes a plurality of LED elements 21 and a mounting substrate 22a that is elongated in the direction D2. The plurality of light source modules 26 are arranged in a direction D3 that is orthogonal to the directions D1 and D2.

[0116] The light source modules 26 a to 26 d include the same number of LED elements 21 , but have different arrangements of the LED elements 21 .

[0117] (2) Light source unit and light source module

[0118] The light source module 26 has two or more (in Figure 6 In the example, there are 13 LED elements 21. More specifically, the light source module 26 has a light emitting circuit including two or more LED elements 21. Each of the light source modules 26a to 26d has, for example, the same circuit configuration of the light emitting circuit.

[0119] In the light source module 26 , the LED elements 21 are arranged unevenly.

[0120] Hereinafter, a specific example in which the LED elements 21 are arranged unevenly will be described in more detail.

[0121] For example, in the light source module 26, the plurality of LED elements 21 are arranged in a row in the direction D2. In addition, in the light source module 26, the intervals between the plurality of LED elements 21 are uneven. In other words, among the plurality of LED elements 21 arranged in the direction D2 in the light source module 26, the interval between the LED element 21 at one end and the LED element 21 at the center is different from the interval between the LED element 21 at the center and the LED element 21 at the other end.

[0122] In addition, for example, in the light source unit 2, in at least one combination of two light source modules 26 adjacent to each other in the direction D3, the arrangement of the LED elements 21 is different. More specifically, for example, in the direction D2, the distance between one end of the light source module 26a and the LED element 21 closest to the one end is different from the distance between one end of the light source module 26c and the LED element 21 closest to the one end. In addition, for example, the second LED element 21 from the end of the light source module 26a and the second LED element 21 from the end of the light source module 26b are not arranged in the direction D3.

[0123] Thus, in the light source unit 2b, there is a portion where the LED elements 21 are not arranged in a straight line in the direction D3. In addition, in the light source unit 2b, the density of the LED elements 21 in the direction D2 is not constant. Thus, in the light source unit 2b, the plurality of LED elements 21 are unevenly arranged. Thus, the brightness of the irradiated surface illuminated by the light source unit 2b can be made uneven. Therefore, the brightness of the space illuminated by the lighting fixture 100 can be made uneven, and an effect of providing imbalance, fluidity, and dynamism can be presented.

[0124] 2. Manufacturing method of lighting fixture

[0125] Hereinafter, a method for manufacturing the lighting fixture 100 will be described.

[0126] The method for manufacturing the lighting fixture 100 includes a substrate preparing step, a module manufacturing step, a module configuring step, and a lighting fixture assembling step.

[0127] In the mounting substrate preparation step, a plurality of long mounting substrates 22 a are prepared.

[0128] In the module manufacturing step, a plurality of light source modules 26 are manufactured. Each of the plurality of light source modules 26 is manufactured by unevenly arranging a plurality of LED elements 21 on a strip-shaped mounting substrate 22a along the long axis direction of the mounting substrate 22a, i.e., direction D2. More specifically, on the mounting substrate 22a that is long along the direction D2, a plurality of LED elements 21 are arranged in a row at uneven intervals along the direction D2.

[0129] In the module manufacturing step, multiple (in Figure 6 In the module manufacturing step, the light source modules 26a, 26b, 26c and 26d are manufactured using the four LED configuration patterns. More specifically, in the module manufacturing step, the plurality of LED elements 21 are connected to the Figure 6 The light source modules 26a are similarly arranged on the mounting substrate 22a, thereby manufacturing each of the plurality of light source modules 26a. Figure 6 The light source modules 26b are similarly arranged on the mounting substrate 22a, thereby manufacturing each of the plurality of light source modules 26b. Similarly, in the module manufacturing step, the plurality of LED elements 21 are connected to the mounting substrate 22a. Figure 6 The light source modules 26c are similarly arranged on the mounting substrate 22a, thereby manufacturing each of the plurality of light source modules 26c. Similarly, in the module manufacturing step, the plurality of LED elements 21 are connected to the mounting substrate 22a. Figure 6 The light source modules 26d are similarly arranged on the mounting substrate 22a, thereby manufacturing each of the plurality of light source modules 26d.

[0130] Furthermore, in the module configuration step, the plurality of modules (in Figure 6 The light source modules 26 are arranged in the direction D3, i.e., the short axis direction of the mounting substrate 22a. More specifically, one or more (in the case of 8) light source modules 26 are selected from each of the light source modules 26a, 26b, 26c, and 26d generated in the module manufacturing step. Figure 6 The eight light source modules 26 obtained by arranging the eight light source modules 26 in the direction D3 are arranged on the main body 1, thereby manufacturing the light source unit 2b. At this time, the eight light source modules 26 are selected in such a way that the arrangement of the LED elements 21 in the direction D3 is irregular. For example, the eight light source modules 26 arranged in the direction D3 are selected in such a way that the arrangement of the LED elements 21 is not point-symmetrical and the LED elements 21 are not periodically arranged in the direction D3. In more detail, for example, Figure 6 As shown, the light source modules are arranged in the order of 26a, 26b, 26c, 26d, 26b, 26d, 26c, and 26a.

[0131] In the lighting fixture assembly step, the power supply unit and the cover 3 are mounted on the main body 1. More specifically, the power supply unit and the cover 3 are mounted on the main body 1 to which the light source unit 2 is mounted. In this way, the lighting fixture 100 is manufactured.

[0132] 3. Effect

[0133] In the lighting fixture 100 according to Embodiment 5, the plurality of LED elements 21 are arranged unevenly. Thus, in the lighting fixture 100, light can be emitted unevenly from the light source unit 2a, and thus the brightness of the illuminated surface illuminated by the light source unit 2a can be easily made uneven.

[0134] In the lighting fixture 100 according to Embodiment 5, the light source unit 2a includes a plurality of light source modules 26. Each of the plurality of light source modules 26 includes two or more of the plurality of LED elements 21. Thus, in the lighting fixture 100, by arranging the LED elements 21 unevenly in the light source modules 26, it is easy to arrange the plurality of LED elements 21 unevenly in the lighting fixture 100.

[0135] In the lighting fixture 100 according to Embodiment 5, the plurality of light source modules 26 include a light source module 26a and a light source module 26b. The light source module 26a and the light source module 26b have different arrangements of two or more LED elements 21. Thus, in the lighting fixture 100, the possibility of regularity in the arrangement of the plurality of LED elements 21 in the light source unit 2a is reduced, and the arrangement of the LED elements 21 is easily made uneven.

[0136] In addition, in the lighting fixture 100 according to Embodiment 5, each of the plurality of light source modules 26 has a light emitting circuit including a part of the plurality of LED elements 21. The connection structures of the light emitting circuits are mutually identical in the plurality of light source modules 26. Thus, in the lighting fixture 100, the plurality of light source modules 26 can be replaced in the light source unit 2a. Therefore, by changing the combination of the plurality of light source modules 26, the arrangement of the plurality of LED elements 21 in the light source unit 2a can be easily changed.

[0137] In addition, the manufacturing method of the lighting fixture 100 related to Embodiment 5 includes a module manufacturing step and a module configuration step. In the module manufacturing step, a plurality of LED elements 21 are unevenly arranged on a strip-shaped mounting substrate 22a along the long axis direction of the mounting substrate 22a, that is, along the direction D2, to manufacture a plurality of light source modules 26. In the module configuration step, the plurality of light source modules 26 manufactured in the module manufacturing step are arranged in the short axis direction of the mounting substrate 22a, that is, along the direction D3. Since the LED elements 21 are unevenly arranged in the direction D2 in each of the plurality of light source modules 26, it is easy to make the arrangement of the LED elements 21 uneven in the lighting fixture 100. In addition, by manufacturing a plurality of light source modules 20 having mutually different arrangements of the LED elements 21 in the module manufacturing step, it is easy to manufacture a plurality of lighting fixtures 100 having different arrangements of the LED elements 21.

[0138] (Implementation 6)

[0139] 1. Structure

[0140] In the lighting fixture 100 according to the sixth embodiment, the light source unit 2 c further includes a plurality of lenses 41 corresponding one-to-one to the plurality of LED elements 24 .

[0141] like Figure 7 As shown, the light source unit 2c has multiple (in Figure 7 In the embodiment 4, the plurality of LED elements 24 are evenly arranged in the light source unit 2c. The plurality of LED elements 24 constitute a light-emitting circuit with the light source module 27 as a unit. That is, the plurality of LED elements 24 include a plurality of (for example, 3) LED element groups arranged in the light source module 27. Each of the plurality of LED element groups includes a plurality of (for example, 8) LED elements 24 connected in series. The plurality of LED element groups are connected in parallel to each other, thereby constituting a light-emitting circuit.

[0142] In the light source unit 2c, a lens 41 is disposed on the surface of each of the plurality of LED elements 24. Each of the lenses 41 is formed of a synthetic resin having light transmittance, such as acrylic resin, polycarbonate resin, etc. That is, the plurality of LED elements 24 correspond to the plurality of lenses 41 one by one. The light distribution characteristics of the plurality of lenses 41 are not uniform. In more detail, for example, Figure 8As shown, the light distribution characteristics of lens 41a corresponding to LED element 24a are different from the light distribution characteristics of lens 41b corresponding to LED element 24b. Lens 41a corresponds to the first lens, and lens 41b corresponds to the second lens. Here, the light distribution characteristics of lens 41 are the relationship between the emission direction of light passing through lens 41 and the light intensity, for example, expressed by a light distribution angle. The light distribution angle of lens 41a is, for example, an angle a1 representing a range in which the luminous intensity is greater than 1 / 2 of the luminous intensity on optical axis L1. Similarly, the light distribution angle of lens 41b is, for example, an angle a2 representing a range in which the luminous intensity is greater than 1 / 2 of the luminous intensity on optical axis L2. The light distribution angle of lens 41b is larger than the light distribution angle of lens 41a.

[0143] In the light source unit 2c, a plurality of lenses 41a and a plurality of lenses 41b are unevenly arranged. In more detail, in each of the light source modules 27a, 27b and 27c, a plurality of lenses 41a and a plurality of lenses 41b are unevenly arranged. In the plurality of lenses 41 corresponding to the plurality of LED elements 24 on the imaginary arc C1, the lenses 41a and the lenses 41b are respectively arranged in a non-periodic and asymmetrical manner. Similarly, in the plurality of lenses 41 corresponding to the plurality of LED elements 24 on the imaginary arc C2, the lenses 41a and the lenses 41b are respectively arranged in a non-periodic and asymmetrical manner. Similarly, in the plurality of lenses 41 corresponding to the plurality of LED elements 24 on the imaginary arc C3, the lenses 41a and the lenses 41b are respectively arranged in a non-periodic and asymmetrical manner.

[0144] As a result, the multiple LED elements 24 corresponding to the lens 41a are unevenly arranged in the light source unit 2c. In addition, similarly, the multiple LED elements 24 corresponding to the lens 41b are unevenly arranged in the light source unit 2c. Therefore, it is easy to make the brightness of the irradiated surface illuminated by the light source unit 2c uneven. In addition, since the light distribution characteristics of the lens 41a and the lens 41b are different, the light beam passing through the lens 41a and the light beam passing through the lens 41b are different depending on the angle between the direction of irradiation from the lighting fixture 100 to the irradiated surface and the direction D1. That is, the brightness of the irradiated surface illuminated by the lighting fixture 100 can also become uneven with respect to the distance from the central axis A1.

[0145] 2. Effect

[0146] In the lighting fixture 100 related to Embodiment 6, the light source unit 2c also includes a plurality of lenses 41 corresponding one to one to the plurality of LED elements 24. The plurality of lenses 41 include a plurality of lenses 41a and a plurality of lenses 41b. The light distribution characteristics of the lens 41a and the lens 41b are different from each other. The plurality of lenses 41a and the plurality of lenses 41b are unevenly arranged. As a result, it is easy to make the brightness of the irradiated surface illuminated by the light source unit 2c uneven. In addition, since the light distribution characteristics of the lens 41a and the lens 41b are different, the light beam passing through the lens 41a and the light beam passing through the lens 41b are different according to the angle between the direction of irradiation from the lighting fixture 100 to the irradiated surface and the direction D1. That is, the brightness of the irradiated surface illuminated by the lighting fixture 100 can also be made uneven with respect to the distance from the central axis A1.

[0147] In addition, in the lighting fixture 100 related to embodiment 6, the plurality of LED elements 24 include a plurality of LED element groups. The plurality of LED element groups are connected in parallel to each other. In each of the plurality of LED element groups, two or more LED elements 24 are connected in series. A portion of the LED elements 24 included in the plurality of LED element groups corresponds to the lens 41a, and the remaining portion of the LED elements 24 included in the plurality of LED element groups corresponds to the lens 41b. The two or more first lenses are unevenly arranged. In addition, the two or more second lenses are unevenly arranged. Thus, in the lighting fixture 100, it is easy to make the arrangement of the plurality of lenses 41 in the light source unit 2c uneven.

[0148] (Other Modifications of the Embodiments)

[0149] (1) In the lighting fixture 100 of Embodiments 1 to 4 and 6, the light source units 2, 2a, 2c include three light source modules 20, 25, 27, but the light source unit 2 may include two light source modules 20. Alternatively, the light source unit 2 may include four or more light source modules 20. In addition, the light source modules 20, 25, 27 include three rows of LED elements 21, 24, but the number of rows of LED elements 21 may be one row, two rows, or four or more rows. Thus, the arrangement pattern of the LED elements 21 in the light source module 20 can be appropriately prepared.

[0150] Furthermore, in the lighting fixtures 100 according to the first to fourth and sixth embodiments, the shape of the light source unit 2 is not limited to a circular shape, and may be an elliptical shape or a polygonal shape.

[0151] (2) In the lighting fixture 100 according to Embodiment 5, the light source unit 2b includes eight light source modules 26, but the number of light source modules 26 included in the light source unit 2b may be 2 to 7 or more than 9. In addition, the light source modules 26 having different arrangement patterns of the LED elements 21 are not limited to four, but may be two, three, or five or more.

[0152] Furthermore, the light source module 26 includes one row of LED elements 21, but there may be two or more rows of LED elements 21. Furthermore, in the lighting fixture 100 according to Embodiment 5, the shape of the light source unit 2b is square, but it may be rectangular.

[0153] Furthermore, the light source modules 26 having different arrangements of LED elements may have different widths in the direction D3. Thus, the arrangement pattern of the LED elements 21 in the light source modules 26 can be appropriately prepared.

[0154] (3) In the lighting fixture 100 of Embodiment 3, the LED element 21a emits light in a daylight color, and the LED element 21b emits light in an incandescent light color, but the light emission colors of the LED element 21a and the light emission colors of the LED element 21b may be any color as long as they are not the same color. Similarly, in the lighting fixture 100 of the modification of Embodiment 3, the light emission colors of the LED elements 21c, 21d, and 21e are not limited to blue, green, and red, and may be any color as long as they do not include the same color. In addition, the types of light emission colors of the LED element 21 are not limited to two or three, and may be four or more.

[0155] (4) In the lighting fixture 100 according to Embodiment 6, the LED elements 24 are evenly arranged in the light source unit 2c, but may be unevenly arranged as in the LED elements 21 of Embodiments 1 to 4. This makes it easier to make the brightness of the illuminated surface illuminated by the light source unit 2c uneven.

[0156] (5) In the lighting fixture 100 according to Embodiment 6, the plurality of lenses 41 include the lenses 41 a and 41 b having different light distribution angles. However, the plurality of lenses 41 may include three or more types of lenses 41 having different light distribution angles.

[0157] Furthermore, although the light distribution angles of the lens 41 a and the lens 41 b are different from each other, the extending directions of the optical axes of the lens 41 a and the lens 41 b may be different from each other, or both the light distribution angle and the extending directions of the optical axes may be different from each other.

[0158] (6) In the lighting fixture 100 according to Embodiment 6, the plurality of lenses 41 are directly disposed in the light source module 27, but a light distribution component having the plurality of lenses 41 may be provided separately from the light source module 27. The light distribution component may be a single light distribution component having the plurality of lenses 41, or may be configured such that two or more light distribution components function as the plurality of lenses 41 by disposing two or more light distribution components between the light source unit 2 c and the cover 3.

[0159] (7) The embodiments and variations described above are only a part of the various embodiments and variations of the present invention. In addition, the embodiments and variations can be modified in various ways according to the design, etc. as long as they can achieve the purpose of the present invention. In addition, the embodiments and embodiments, or the embodiments and variations, or variations and variations can be appropriately combined.

[0160] (Technical solution)

[0161] A lighting fixture (100) according to a first technical solution comprises a light source unit (2 to 2c). The light source unit (2 to 2c) has a plurality of LED elements (21, 24). The brightness of an irradiated surface irradiated by the light source unit (2 to 2c) is non-uniform.

[0162] According to the lighting fixture (100) related to the above technical solution, the brightness of the space illuminated by the lighting fixture (100) can be made uneven, which can provide an effect of imbalance, fluidity and dynamism.

[0163] In the lighting fixture (100) according to the second technical solution, in the first technical solution, the plurality of LED elements (21) are arranged unevenly in the light source units (2 to 2b).

[0164] According to the lighting fixture (100) related to the above technical solution, since light can be emitted from the light source unit (2) in a non-uniform manner, it is easy to make the brightness of the irradiated surface illuminated by the light source unit 2 non-uniform.

[0165] In the lighting fixture (100) according to the third technical solution, in the second technical solution, the light source unit (2 to 2c) includes a plurality of light source modules (20, 25, 26). Each of the plurality of light source modules (20, 25, 26, 27) includes two or more LED elements (21) among the plurality of LED elements (21).

[0166] According to the lighting fixture (100) related to the above technical solution, by unevenly arranging the LED elements (21) in the light source modules (20, 25, 26), it is easy to unevenly arrange the plurality of LED elements (21) in the lighting fixture (100).

[0167] In the lighting device (100) according to the fourth technical solution, in the third technical solution, the plurality of light source modules (20, 25, 26) include a first module (20a, 20d, 20g, 25a, 26a) and a second module (20b, 20e, 20h, 25b, 26b). The first module (20a, 20d, 20g, 25a, 26a) and the second module (20b, 20e, 20h, 25b, 26b) have two or more LED elements (21) arranged differently from each other.

[0168] According to the lighting fixture (100) related to the above technical solution, the possibility of regularity in the arrangement of the plurality of LED elements (21) in the light source unit (2, 2a, 25) is reduced, and the arrangement of the LED elements (21) is easily made uneven.

[0169] In the lighting device (100) according to the fifth technical solution, in the third or fourth technical solution, each of the plurality of light source modules (20, 25, 26) has a light emitting circuit including a part of the plurality of LED elements (21). In the plurality of light source modules (20, 25, 26), the circuit structures of the light emitting circuits are mutually identical.

[0170] According to the lighting fixture (100) related to the above technical solution, a plurality of light source modules (20, 25, 26) can be replaced in the light source unit (2, 2a, 2b). Therefore, by changing the combination of the plurality of light source modules (20, 25, 26), the arrangement of the plurality of LED elements (21) in the light source unit (2, 2a, 2b) can be easily changed.

[0171] In the lighting fixture (100) according to the sixth technical solution, in any one of the second to fifth technical solutions, the light source unit (2a) further includes a plurality of second LED elements (24) different from the plurality of first LED elements (21). The plurality of second LED elements (24) are uniformly arranged. The lighting fixture (100) is capable of controlling which of the plurality of first LED elements (21) and the plurality of second LED elements (24) is to be illuminated.

[0172] According to the lighting fixture (100) related to the above technical solution, when a plurality of LED elements (21) are made to emit light, the brightness of the space illuminated by the lighting fixture (100) can be made uneven, thereby providing an effect presentation of imbalance, fluidity, and a sense of dynamism. On the other hand, in the lighting fixture (100), when a plurality of LED elements (24) are made to emit light, the space illuminated by the lighting fixture (100) can be evenly illuminated. Therefore, in one lighting fixture (100), the presence or absence of the effect presentation of imbalance, fluidity, and a sense of dynamism can be easily switched.

[0173] For the lighting fixture (100) related to the seventh technical solution, in any one of the second to sixth technical solutions, the plurality of LED elements (21) include two or more first color LED elements (21a, 21c) and two or more second color LED elements (21b, 21d). The light emission colors of the two or more second color LED elements (21b, 21d) are different from the light emission colors of the two or more first color LED elements (21a, 21c). The two or more first color LED elements (21a, 21c) and the two or more second color LED elements (21b, 21d) are unevenly arranged. In the light source unit (2), the arrangement of the two or more first color LED elements (21a, 21c) is different from that of the two or more second color LED elements (21b, 21d).

[0174] According to the lighting fixture (100) of the above technical solution, the brightness and color can be made uneven in the space illuminated by the lighting fixture (100), thereby further enhancing the uneven, fluid and dynamic effects in the space illuminated by the lighting fixture (100).

[0175] For the lighting device (100) related to the eighth technical solution, in any one of the first to seventh technical solutions, the light source unit (2c) further includes a plurality of lenses (41) corresponding one-to-one to the plurality of LED elements (24). The plurality of lenses (41) include a plurality of first lenses (41a) and a plurality of second lenses (41b). The light distribution characteristics of the plurality of first lenses (41a) and the plurality of second lenses (41b) are different from each other. The plurality of first lenses (41a) and the plurality of second lenses (41b) are unevenly arranged.

[0176] According to the lighting fixture (100) related to the above technical solution, it is easy to make the brightness of the irradiated surface illuminated by the light source unit (2c) uneven. In addition, since the light distribution characteristics of the first lens (41a) and the second lens (41b) are different, it is easier to make the brightness of the irradiated surface illuminated by the lighting fixture (100) uneven.

[0177] Regarding the lighting fixture (100) related to the ninth technical solution, in the eighth technical solution, the plurality of LED elements (24) include a plurality of LED element groups. The plurality of LED element groups are connected in parallel to each other. In each of the plurality of LED element groups, two or more LED elements are connected in series. A portion of the LED elements (24) included in the plurality of LED element groups corresponds to the first lens (41a), and the remaining portion of the LED elements (24) included in the plurality of LED element groups corresponds to the second lens (41b). The two or more first lenses (41a) are unevenly arranged. The two or more second lenses (41b) are unevenly arranged.

[0178] According to the lighting fixture (100) related to the above technical solution, it is easy to make the arrangement of the plurality of lenses (41) in the light source unit (2c) uneven.

[0179] The manufacturing method of the lighting fixture (100) according to the tenth technical solution comprises a module manufacturing step and a module configuration step. In the module manufacturing step, a plurality of LED elements (21) are non-uniformly configured on an arc-shaped substrate (22) in at least one of the circumferential direction or radial direction of the arc to manufacture a plurality of light source modules (20, 25). In the module configuration step, the plurality of light source modules (20, 25) manufactured in the module manufacturing step are configured in a circumferential shape.

[0180] According to the manufacturing method of the lighting fixture (100) related to the above technical solution, since the LED elements (21) are unevenly arranged in the light source modules (20, 25), it is easy to make the arrangement of the LED elements (21) uneven in the lighting fixture (100). In addition, by manufacturing a plurality of light source modules (20, 25) having mutually different arrangements of the LED elements (21) in the module manufacturing step, it is easy to manufacture a plurality of lighting fixtures (100) having different arrangements of the LED elements (21).

[0181] The manufacturing method of the lighting fixture (100) according to the eleventh technical solution comprises a module manufacturing step and a module configuration step. In the module manufacturing step, a plurality of LED elements (21) are unevenly configured on a long strip substrate (22a) along the long axis direction (D2) of the substrate to manufacture a plurality of light source modules (26). In the module configuration step, the plurality of light source modules (26) manufactured in the module manufacturing step are arranged in a short axis direction (D3) of the substrate (22a).

[0182] According to the manufacturing method of the lighting fixture (100) related to the above technical solution, since the LED elements (21) are unevenly arranged in the light source module (26), it is easy to make the arrangement of the LED elements (21) uneven in the lighting fixture (100). In addition, by manufacturing a plurality of light source modules (26) having mutually different arrangements of the LED elements (21) in the module manufacturing step, it is easy to manufacture a plurality of lighting fixtures (100) having mutually different arrangements of the LED elements (21).

Claims

1. A lighting fixture, characterized in that: A light source unit is provided, the light source unit having a plurality of LED elements, The brightness of the illuminated surface illuminated by the light source unit is non-uniform.

2. The lighting fixture according to claim 1, characterized in that: In the light source unit, the plurality of LED elements are arranged unevenly.

3. The lighting fixture according to claim 2, characterized in that: The light source unit comprises a plurality of light source modules. Each of the plurality of light source modules includes two or more LED elements among the plurality of LED elements.

4. The lighting fixture according to claim 3, characterized in that: The plurality of light source modules include a first module and a second module. The first module and the second module have different arrangements of the two or more LED elements.

5. The lighting fixture according to claim 3 or 4, characterized in that: Each of the plurality of light source modules has a light emitting circuit including a part of the plurality of LED elements. In the plurality of light source modules, the circuit structures of the light emitting circuits are identical to each other.

6. The lighting fixture according to any one of claims 2 to 5, characterized in that: The light source unit further includes a plurality of second LED elements different from the plurality of first LED elements as the plurality of LED elements. The plurality of second LED elements are uniformly arranged. The lighting fixture can control which of the plurality of first LED elements and the plurality of second LED elements is to be emitted light based on a user's selection.

7. The lighting fixture according to any one of claims 2 to 6, characterized in that: The plurality of LED elements include at least two first-color LED elements and at least two second-color LED elements. The light emission colors of the two or more second-color LED elements are different from the light emission colors of the two or more first-color LED elements. The two or more first color LED elements and the two or more second color LED elements are unevenly arranged. In the light source unit, the two or more first-color LED elements are arranged differently from the two or more second-color LED elements.

8. The lighting fixture according to any one of claims 1 to 7, characterized in that: The light source unit further includes a plurality of lenses corresponding to the plurality of LED elements one by one. The plurality of lenses include a plurality of first lenses and a plurality of second lenses. The light distribution characteristics of the plurality of first lenses and the plurality of second lenses are different from each other. The plurality of first lenses and the plurality of second lenses are arranged unevenly.

9. The lighting fixture according to claim 8, characterized in that: The plurality of LED elements include a plurality of LED element groups. The plurality of LED element groups are connected in parallel with each other. In each of the plurality of LED element groups, two or more LED elements are connected in series. A portion of the LED elements included in the plurality of LED element groups corresponds to the first lens, and the remaining portion of the LED elements included in the plurality of LED element groups corresponds to the second lens. The two or more first lenses are arranged unevenly. The two or more second lenses are arranged unevenly.

10. A method for manufacturing a lighting fixture, characterized in that: include: a module manufacturing step of manufacturing a plurality of light source modules by arranging a plurality of LED elements unevenly in at least one of the circumferential direction or radial direction of the arc on an arc-shaped substrate; and The module arranging step is to arrange the plurality of light source modules manufactured in the module manufacturing step in a circular shape.

11. A method for manufacturing a lighting fixture, characterized in that: include: a module manufacturing step, on a strip-shaped substrate, unequally disposing a plurality of LED elements along the long axis direction of the substrate to manufacture a plurality of light source modules; and The module arranging step is to arrange the plurality of light source modules manufactured in the module manufacturing step in a row in the short axis direction of the substrate.

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