Illuminating device

Abstract

To provide an illuminating device that reduces a positional shift between a plurality of light sources and a plurality of optical components.SOLUTION: An illuminating device comprises a plurality of light sources 1, a board 2, a plurality of optical components 3, and a holder 4. The plurality of light sources 1 are arranged on the board 2. The plurality of optical components 3 correspond to the plurality of light sources 1. The holder 4 holds the plurality of optical components 3 so that the plurality of optical components 3 are arranged in a staggered configuration. The holder 4 is divided into a plurality of units 40. The holder 4 comprises a boundary part 14 between a first unit 41 and a second unit 42 adjacent to each other out of the plurality of units 40. The boundary part 14 blocks an effect on the second unit 42 from the first unit 41. The boundary part 14 is provided along outer peripheries of the plurality of optical components 3 arranged in the staggered configuration.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates generally to lighting devices, and more particularly to lighting devices including a holder that holds multiple optical components. [Background technology]

[0002] The illumination device described in Patent Document 1 is exemplified below. The illumination device described in Patent Document 1 includes a light source module and a lens unit. The light source module includes a substrate and a plurality of light-emitting elements (light sources) mounted on one surface of the substrate. The lens unit includes a lens assembly formed by assembling a plurality of lenses (optical components). The arrangement of the lenses is the same as the arrangement of the light-emitting elements. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-124984 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting device described in Patent Document 1, the lens unit is configured by integrating multiple lenses, so there is a possibility that the lens unit may expand and contract due to heat from the multiple light-emitting elements, etc. Therefore, in the lighting device described in Patent Document 1, there is a possibility that misalignment may occur between the multiple light-emitting elements and the multiple lenses.

[0005] An object of the present disclosure is to provide an illumination device that reduces misalignment between a plurality of light sources and a plurality of optical components. [Means for solving the problem]

[0006] An illumination device according to one aspect of the present disclosure includes a plurality of light sources, a substrate, a plurality of optical components, and a holder. The substrate arranges the plurality of light sources. The plurality of optical components correspond to the plurality of light sources. The holder holds the plurality of optical components so that the plurality of optical components are arranged in a staggered pattern. The holder is divided into a plurality of units. The holder has a boundary between a first unit and a second unit that are adjacent to each other among the plurality of units. The boundary separates the influence of the first unit on the second unit. The boundary is provided along the outer periphery of the plurality of optical components arranged in the staggered pattern. [Effects of the Invention]

[0007] According to an illumination device according to an aspect of the present disclosure, misalignment between a plurality of light sources and a plurality of optical components is reduced. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of the lighting device according to the first embodiment. [Figure 2] FIG. 2 is a front view of the light source unit of the lighting device shown in FIG. 1 with a cover and a frame removed. [Figure 3] FIG. 3 is a cross-sectional view of the illumination device, showing a part of a light source unit. [Figure 4] FIG. 4 is another cross-sectional view of the above lighting device, showing a part of the light source unit. [Figure 5] FIG. 5 is a cross-sectional view illustrating a part of a light source unit of an illumination device according to a second embodiment. [Figure 6] FIG. 6 is a cross-sectional view schematically showing a part of a light source unit of an illumination device according to a third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Illumination devices according to embodiments 1 to 3 will be described below with reference to the drawings. The figures described in the following embodiments are schematic diagrams, and the ratios of the sizes and thicknesses of the components do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved. In the following description, unless otherwise specified, the first direction D1, second direction D2, and third direction D3 indicated by arrows in the drawings are defined as the front-rear direction, left-right direction, and up-down direction of the illumination device A1. However, the front-rear direction, left-right direction, and up-down direction are used for convenience to facilitate understanding of the embodiments, and do not define the directions when the illumination device A1 is used. Furthermore, the arrows "D1," "D2," and "D3" in the drawings are merely shown for explanatory purposes and do not have any physical substance.

[0010] (Embodiment 1) An illumination device A1 according to a first embodiment will be described with reference to FIGS.

[0011] (1) Lighting equipment The lighting device A1 is a floodlight that is mainly used to illuminate (floodlight) soccer stadiums, various sports fields, school playgrounds, etc. As shown in Fig. 1, the lighting device A1 includes a light source unit 10, a power supply unit 30, a pair of fixing members 60 (only one is shown in Fig. 1), an arm 20, and a display board 50.

[0012] (2) Components of the lighting device (2.1) Light source unit 3, the light source unit 10 includes a plurality of light sources 1, a substrate 2, a plurality of optical components 3, a holder 4, a cover 11, a heat dissipation block 12, and a frame 13 (see FIG. 1). Note that only a portion of the heat dissipation block 12 is shown in FIG.

[0013] Each light source 1 is, for example, a light-emitting element. More specifically, each light source 1 is, for example, an LED (for example, a packaged white LED for lighting). The substrate 2 is, for example, a printed circuit board. The substrate 2 is, for example, plate-shaped (for example, flat). The substrate 2 is, for example, white. The light sources 1 are arranged at predetermined intervals on one surface (front surface) of the substrate 2. More specifically, the light sources 1 are arranged in a staggered pattern on the front surface of the substrate 2 (see FIG. 2). Note that, "staggered" arrangement of the light sources 1 refers to, for example, a state in which the light sources 1 arranged in one column (first column) of two adjacent columns are positioned between the light sources 1 arranged in the remaining column (second column) adjacent to the first column. In other words, "staggered" arrangement of the light sources 1 refers to a state in which the light sources 1 arranged in the first column and the light sources 1 arranged in the second column are arranged alternately.

[0014] Each optical component 3 is, for example, a lens. As shown in FIG. 3, each optical component 3 has, for example, a substantially truncated cone shape. The material of each optical component 3 is a light-transmitting material (for example, a light-transmitting resin). Examples of light-transmitting resin include acrylic resin, polycarbonate resin, and ABS resin. As shown in FIGS. 2 and 3, the multiple optical components 3 are arranged, for example, in a one-to-one correspondence with the multiple light sources 1. In other words, the multiple optical components 3 are arranged in a staggered pattern, similar to the multiple light sources 1.

[0015] The holder 4 holds a plurality of optical components 3. More specifically, as shown in FIG. 2, the holder 4 holds the plurality of optical components 3 so that the plurality of optical components 3 are arranged in directions (second direction D2 and third direction D3) along the front surface of the substrate 2. The holder 4 is, for example, in the shape of a plate (for example, a rectangular plate). The material of the holder 4 is, for example, resin. Details of the holder 4 will be described later.

[0016] The cover 11 (see FIG. 3) transmits light from the multiple optical components 3. The cover 11 also covers the multiple light sources 1, the substrate 2, the multiple optical components 3, and the holder 4. The cover 11 is box-shaped (for example, rectangular box-shaped) with one side open. The material of the cover 11 is, for example, a light-transmitting material (for example, a light-transmitting resin).

[0017] The heat dissipation block 12 dissipates heat generated by the multiple light sources 1 and the substrate 2 to the outside of the light source unit 10. The heat dissipation block 12 has a base portion 12a and multiple heat dissipation fins 12b (see FIG. 1). The base portion 12a is, for example, plate-shaped (e.g., rectangular plate-shaped). The base portion 12a is made of, for example, a thermally conductive material (e.g., metal). More specifically, the base portion 12a is made of, for example, an aluminum alloy. The substrate 2 is attached to a first surface (front surface) of the base portion 12a in the thickness direction (first direction D1) using multiple first mounting screws (not shown). This mechanically and thermally connects the substrate 2 and the base portion 12a of the heat dissipation block 12 in the light source unit 10. Furthermore, multiple heat dissipation fins 12b (see FIG. 1) are attached to a second surface (rear surface) of the base portion 12a in the thickness direction. Each heat dissipation fin 12b is, for example, plate-shaped (e.g., rectangular plate-shaped). Each heat dissipation fin 12b is made of, for example, a thermally conductive material (e.g., metal). More specifically, each heat dissipation fin 12b is made of, for example, an aluminum alloy. Each heat dissipation fin 12b is attached to the base portion 12a so as to protrude rearward from the rear surface of the base portion 12a. Furthermore, the multiple heat dissipation fins 12b are attached to the rear surface of the base portion 12a, for example, at regular intervals. The heat dissipation block 12 dissipates heat generated by the multiple light sources 1 and the substrate 2 to the outside of the light source unit 10, thereby reducing the temperature rise of the multiple light sources 1 and improving the light-emitting efficiency of the multiple light sources 1.

[0018] The frame 13 (see FIG. 1) secures the cover 11 to the heat dissipation block 12. The frame 13 is frame-shaped (e.g., rectangular frame-shaped). The frame 13 is made of, for example, metal (e.g., stainless steel plate). The frame 13 is secured to the base 12a of the heat dissipation block 12 using, for example, a plurality of second mounting screws 72.

[0019] (2.2) Power supply unit The power supply unit 30 lights up the light source unit 10. As shown in FIG. 1, the power supply unit 30 includes a power supply device (not shown), a case 31, and multiple (two in the example of FIG. 1) power supply lines P1 and P2. The power supply device converts AC power supplied from a commercial power source (not shown) into DC power. The power supply device also operates to match the current value of the DC current supplied to the light source unit 10 with a target value (for example, the rated current value of the multiple light sources 1). The power supply device may also have a function (dimming function) to adjust the target value of the DC current supplied to the light source unit 10 to a value lower than the rated current value of the multiple light sources 1.

[0020] The case 31 houses the power supply device. The case 31 is, for example, box-shaped (e.g., rectangular box-shaped). The case 31 is made of, for example, metal (e.g., aluminum alloy). Two power feeders P1 and P2, for example, are led out from one surface (bottom surface) of the case 31 (see FIG. 1). The two power feeders P1 and P2 are electrically connected to the power supply device. The power feeder P1 is electrically connected to the light source unit 10 and transmits DC current output from the power supply device to the light source unit 10. The power feeder P2 is electrically connected to a commercial power source and transmits AC power output from the commercial power source to the power supply device.

[0021] (2.3) Fixing member The pair of fixing members 60 fix the power supply unit 30 to the light source unit 10. In other words, the power supply unit 30 is fixed to the light source unit 10 via the pair of fixing members 60. The pair of fixing members 60 are made of, for example, a metal (for example, an aluminum alloy). The pair of fixing members 60 are fastened to the power supply unit 30 with screws, for example. The pair of fixing members 60 are also fastened to the light source unit 10 with screws, for example.

[0022] (2.4) Arm The arm 20 supports the light source unit 10. More specifically, the arm 20 supports the light source unit 10 so that the light source unit 10 can rotate about a rotation axis R1 (see FIG. 1). The arm 20 is generally U-shaped. The material of the arm 20 is, for example, metal (e.g., aluminum alloy). The arm 20 is attached to a pair of fixing members 60 using two third mounting screws 73 (only one is shown in FIG. 1). The arm 20 is fixed to a stand Z1 provided at an installation location such as a stadium.

[0023] (2.5) Display board The indicator plate 50 displays the rotation angle of the light source unit 10. The indicator plate 50 is, for example, disk-shaped. The indicator plate 50 is made of, for example, metal (e.g., aluminum alloy). A plurality of scales 51 are marked on one surface of the indicator plate 50. The plurality of scales 51 are represented, for example, by line segments along the radial direction of the indicator plate 50 and are engraved on the above-mentioned one surface of the indicator plate 50. A hole (not shown) for inserting a third mounting screw 73 is provided in the center of the indicator plate 50. The indicator plate 50 is disposed between one of a pair of fixing members 60 and the arm 20. When the arm 20 is attached to one fixing member 60, the indicator plate 50 is sandwiched between the arm 20 and the one fixing member 60.

[0024] (3) Assembly procedure for lighting equipment The assembly procedure for the lighting device A1 will be described below. Note that the assembly procedure described below is an example, and the order of some steps may be changed.

[0025] First, the worker performing the assembly work fixes the power supply unit 30 to the light source unit 10 via a pair of fixing members 60. Next, the worker connects the power supply line P1 from the power supply unit 30 to the light source unit 10. Finally, the worker attaches the arm 20 to the pair of fixing members 60 so that the display board 50 is positioned between the arm 20 and one of the fixing members 60. With the above steps, the assembly of the lighting device A1 is completed.

[0026] (4) Details of the holder 2, the holder 4 is divided into a plurality of (four in the example of FIG. 2) units 40. The four units 40 include a first unit 41, a second unit 42, a third unit 43, and a fourth unit 44.

[0027] As shown in FIG. 3, each unit 40 has a base portion 18 and a plurality of storage portions 7. The base portion 18 is, for example, plate-shaped (e.g., flat). The base portion 18 is made of, for example, resin. The base portion 18 is, for example, black in color. The plurality of storage portions 7 store a plurality of optical components 3 in a one-to-one correspondence. As shown in FIG. 3, each storage portion 7 is, for example, cylindrical and tapered. In other words, each storage portion 7 is, for example, cup-shaped without a bottom. Each storage portion 7 is configured so that an optical component 3 is fitted into it. The material of each storage portion 7 is, for example, resin. The color of each storage portion 7 is, for example, black. The plurality of storage portions 7 are attached to the base portion 18 in a state where they penetrate through the base portion 18 in the thickness direction (first direction D1). More specifically, one end (front end) of each storage portion 7 is attached to the base portion 18. The plurality of storage sections 7 and the base section 18 are, for example, configured as a continuous, integrated unit.

[0028] As shown in FIG. 3 , each storage section 7 has a plurality of (two in the example of FIG. 3 ) retaining claws 8. Each retaining claw 8 is elastic and holds the target optical component (target component) 3 when the target component 3 is stored in the storage section 7. More specifically, when the target component 3 is stored in the storage section 7, each retaining claw 8 elastically deforms, allowing the target component 3 to fit into the storage section 7. After the target component 3 is stored in the storage section 7, each retaining claw 8 returns to its original state and holds the target component 3. In other words, each retaining claw 8 is configured using a so-called snap-fit ​​mechanism. Each retaining claw 8 is made of, for example, resin. Each retaining claw 8 is, for example, transparent. Each retaining claw 8 is preferably small so as not to obstruct light emitted from the emission surface of the target optical component 3. The multiple retaining claws 8 and the multiple storage sections 7 are, for example, configured as a continuous, integrated unit.

[0029] The holder 4 has a boundary portion 14 between adjacent units 40 (for example, a first unit 41 and a second unit 42) among the multiple units 40. In other words, the holder 4 has a boundary portion 14 between the first unit 41 and the second unit 42 that are adjacent to each other among the multiple units 40. In this embodiment, the boundary portion 14 is provided not only between the first unit 41 and the second unit 42, but also, for example, between the third unit 43 and the fourth unit 44, between the first unit 41 and the third unit 43, and between the second unit 42 and the fourth unit 44. In short, in this embodiment, the holder 4 has a plurality of boundary portions 14.

[0030] The boundary 14 provided between the first unit 41 and the second unit 42 separates the influence from the first unit 41 to the second unit 42. The boundary 14 provided between the first unit 41 and the second unit 42 also separates the influence from the second unit 42 to the first unit 41. The boundary 14 provided between the third unit 43 and the fourth unit 44 separates the influence from the third unit 43 to the fourth unit 44. The boundary 14 provided between the third unit 43 and the fourth unit 44 also separates the influence from the fourth unit 44 to the third unit 43. The boundary 14 provided between the first unit 41 and the third unit 43 separates the influence from the first unit 41 to the third unit 43. The boundary 14 provided between the first unit 41 and the third unit 43 also separates the influence from the third unit 43 to the first unit 41. The boundary portion 14 provided between the second unit 42 and the fourth unit 44 separates the influence from the second unit 42 to the fourth unit 44. The boundary portion 14 provided between the second unit 42 and the fourth unit 44 also separates the influence from the fourth unit 44 to the second unit 42.

[0031] 2, each boundary 14 is provided along the outer periphery of the plurality of optical components 3 arranged in a staggered pattern. In other words, each boundary 14 is provided along the space between an optical component (first optical component) 3 and an optical component (second optical component) 3 among the plurality of optical components 3 arranged in a staggered pattern.

[0032] Each boundary 14 has gaps 15 along the periphery of the optical components 3 arranged in a staggered pattern. Each boundary 14 also has a plurality of connecting portions 16. Each connecting portion 16 is elastic and connects adjacent units 40 (for example, between a first unit 41 and a second unit 42). Each connecting portion 16 has a U-shaped cross-sectional shape in a vertical direction (first direction D1) perpendicular to the direction (parallel direction) along the front surface of the substrate 2 (see FIG. 3). Each connecting portion 16 is made of, for example, resin. The thickness of each connecting portion 16 is thinner than the thickness of the base portion 18. The connecting portions 16 are arranged at multiple locations along the boundary 14 between adjacent units 40 (see FIG. 2). The connecting portions 16 are arranged at predetermined intervals.

[0033] As shown in FIG. 2, the holder 4 has a plurality of fixing portions 80 (four in the example of FIG. 2). In other words, each unit 40 has, for example, one fixing portion 80. Each fixing portion 80 fixes the corresponding unit 40 to the substrate 2. Each fixing portion 80 is provided in the center of the corresponding unit 40 (see FIG. 2). As shown in FIG. 3, each fixing portion 80 includes a first screw 81 and a first screw receiving portion 82. The first screw receiving portion 82 is, for example, columnar (for example, cylindrical). The first screw receiving portion 82 is made of, for example, resin. A first screw hole 82a is provided in the first screw receiving portion 82. The diameter of the first screw hole 82a is, for example, slightly larger than the diameter of the tip of the first screw 81.

[0034] The holder also has a plurality of defining portions 83 as shown in FIG. 2. In other words, each unit 40 has a plurality of defining portions 83. Each defining portion 83 defines the vertical position of the substrate 2 in the corresponding unit 40. Each defining portion 83 is provided on the periphery of the corresponding unit 40 (see FIG. 2). Each defining portion 83 is configured to restrict movement of the corresponding unit 40 in the vertical direction of the substrate 2 and to allow movement in the direction parallel to the substrate 2. More specifically, as shown in FIG. 4, each defining portion 83 includes a second screw 84 and a second screw receiving portion 85. The second screw receiving portion 85 is, for example, cylindrical (e.g., elliptical cylindrical). The second screw receiving portion 85 is made of, for example, resin. A second screw hole 85a is provided in the second screw receiving portion 85. The second screw 84 is, for example, a screw of the same size as the first screw 81. The second screw hole 85a is, for example, an elliptical elongated hole. The major axis of the second screw hole 85a is larger than the diameter of the tip and head of the second screw 84. The minor axis of the second screw hole 85a is slightly larger than the diameter of the tip of the second screw 84. In other words, the minor axis of the second screw hole 85a is the same size as the diameter of the first screw hole 82a.

[0035] (5) Effects In the illumination device A1, the holder 4 is divided into multiple units 40, with boundaries 14 between adjacent units 40, and the boundaries 14 are provided along the periphery of the multiple optical components 3 arranged in a staggered pattern. Therefore, in the illumination device A1, for example, even if one of the multiple units 40 in the holder 4 expands or contracts due to heat from the multiple light sources 1 and moves in a direction parallel to the substrate 2, the expansion or contraction of the unit 40 is minimal, thereby minimizing the impact on the other units 40. In other words, even if a unit 40 moves in the parallel direction, the boundaries 14 can limit the movement of the unit 40 in the parallel direction (i.e., absorb the movement of the unit 40), thereby minimizing the impact on the other units 40. In other words, in the illumination device A1, the effects of expansion and contraction of each unit 40 in the holder 4 can be decoupled, thereby reducing misalignment between the multiple light sources 1 and the multiple optical components 3. In other words, in the illumination device A1, the misalignment between the multiple light sources 1 and the multiple lenses 3 is reduced. Furthermore, since the holder 4 of the lighting device A1 is configured with multiple units 40 and boundary portions 14, deformation of the holder 4, such as warping, caused by heat from multiple light sources 1, is reduced compared to, for example, a case where the holder 4 is configured as a single unit. Furthermore, since the boundary portions 14 of the lighting device A1 are arranged in a staggered pattern, the surface area of ​​the holder 4 can be made smaller compared to, for example, a case where the boundary portions 14 are arranged in a straight line. As a result, when the lighting device A1 is installed at a high location, stress generated in the lighting device A1 due to, for example, the influence of wind (e.g., wind resistance) is reduced. Furthermore, since the lighting device A1 holds multiple optical components 3 in the holder 4, stray light is less generated compared to, for example, a case where multiple optical components 3 are configured as a single unit (e.g., a lens unit). Furthermore, since the base portion 18 of the holder 4 of the lighting device A1 is black, light leakage from the holder 4 is reduced. Furthermore, since each storage portion 7 of the holder 4 of the lighting device A1 is black, light leakage from the holder 4 is reduced.

[0036] In the illumination device A1, the boundaries 14 have gaps 15 along the outer peripheries of the plurality of optical components 3 arranged in a staggered pattern, so that misalignment between the plurality of light sources 1 and the plurality of optical components 3 is further reduced.

[0037] Furthermore, the lighting device A1 has elastic boundary portions 14 and connection portions 16 that connect adjacent units 40 (for example, between a first unit 41 and a second unit 42). Therefore, in the lighting device A1, even if one unit 40 expands or contracts due to heat from the multiple light sources 1 and moves in a direction parallel to the substrate 2, the movement of the unit 40 can be restricted by the elastic stress of the connection portions 16. Therefore, in the lighting device A1, misalignment between the multiple light sources 1 and the multiple optical components 3 is further reduced.

[0038] In the lighting device A1, the holder 4 has at least one fixing portion 80, which restricts movement of each unit 40 in both directions parallel to and perpendicular to the substrate 2. That is, in the lighting device A1, even if the unit 40 fixed by the fixing portion 80 expands or contracts due to heat from the multiple light sources 1, for example, the lighting device A1 restricts movement of the unit 40 in the parallel and perpendicular directions. Therefore, the lighting device A1 further reduces misalignment between the multiple light sources 1 and the multiple optical components 3. Furthermore, in the lighting device A1, the holder 4 has at least one fixing portion 80, which allows positioning of each unit 40, for example, when assembling the light source unit 10. In other words, each fixing portion 80 has a function of positioning each unit 40.

[0039] Furthermore, in the lighting device A1, because the holder 4 has the defining portions 83, even if the target unit 40 defined by the defining portions 83 expands or contracts due to heat from the multiple light sources 1, the lighting device A1 restricts the unit 40 from moving in the vertical direction relative to the substrate 2. In other words, even if the target unit 40 expands or contracts, the lighting device A1 restricts the unit 40 from moving in the vertical direction while allowing it to move in the parallel direction relative to the substrate 2. Furthermore, in the lighting device A1, because each defining portion 83 is provided in the periphery of the target unit 40 (see FIG. 2), deformation such as warping of the target unit 40 caused by heat from the multiple light sources 1 is reduced. In particular, the peripheral portions of each unit 40 are more likely to be affected by the expansion and contraction of each unit 40 (e.g., deformation due to the accumulation of expansion and contraction) than the central portions of each unit 40, so this is effective in reducing deformation such as warping of each unit 40. That is, in the lighting device A1, the holder 4 has the defining portion 83, which alleviates the influence of expansion and contraction of the holder 4 and reduces the positional deviation of the holder 4 in the vertical direction.

[0040] Furthermore, in the illumination device A1, each storage section 7 in the holder 4 has holding claws 8, so that it is possible to fit the target optical component 3 into each storage section 7. Therefore, in the illumination device A1, the target optical component 3 can be attached to each storage section 7 with a simpler configuration than, for example, when a separate attachment member is prepared to attach the target optical component 3 to each storage section 7.

[0041] (6) Variations Each light source 1 is not limited to an LED, and may be, for example, an organic electroluminescence element, a semiconductor laser element, or the like. The substrate 2 is not limited to a printed circuit board, and may be, for example, a metal-based substrate. Each optical component 3 is not limited to a lens, and may be, for example, a reflector, a reflecting mirror, or the like. The multiple optical components 3 are arranged so as to correspond one-to-one with the multiple light sources 1, but may also be arranged, for example, so that one optical component 3 corresponds to multiple (e.g., two) light sources 1. In other words, the multiple optical components 3 may be arranged, for example, so as to correspond multiple (e.g., two) to one with the multiple light sources 1.

[0042] Each boundary 14 has a plurality of connecting portions 16, but may have a single connecting portion 16. The cross-sectional shape of each connecting portion 16 is not limited to a U-shape, and may be, for example, a V-shape or a wavy shape.

[0043] The multiple storage sections 7 and the base section 18 are configured as a continuous, integrated unit, but for example, they may be configured as separate units and then combined into an integrated unit. The color of each storage section 7 is not limited to black, and may be, for example, white. As a result, in the lighting device A1, light passing through the target optical component (target component) 3 is reflected by the inner surface of the storage section 7 that comes into contact with the target component 3, thereby improving the extraction efficiency of light emitted from the emission surface of the target component 3.

[0044] Furthermore, the color of the holder 4 is not limited to one color, but may be, for example, two colors. For example, the color of the base portion 18 of the holder 4 may be black, and the color of each storage portion 7 may be white. The color of each holding claw 8 is not limited to transparent, but may be, for example, white.

[0045] Each storage section 7 has two holding claws 8, but may have three or more holding claws 8. Also, each storage section 7 has two holding claws 8, but may have one holding claw 8. In short, each storage section 7 is required to have at least one holding claw 8. Also, each storage section 7 may have holding claws 8 around the entire circumference of the front end. In other words, each storage section 7 may have holding claws 8 around the entire circumference of the front end. However, it is preferable that the holding claws 8 are provided on a part of the entire circumference of the front end of the target storage section 7, rather than the entire circumference, so as not to obstruct light emitted from the emission surface of the target optical component 3. The multiple holding claws 8 and the multiple storage sections 7 are configured as a continuous, integrated unit; however, for example, they may be configured separately and then combined into an integrated unit.

[0046] Each unit 40 has one fixing portion 80, but may have multiple fixing portions 80. Also, each unit 40 has one fixing portion 80, but it is not necessary that all units 40 have a fixing portion 80; it is sufficient that at least one unit 40 has a fixing portion 80. In other words, the holder 4 has multiple fixing portions 80, but may have one fixing portion 80. In short, it is sufficient that the holder 4 has at least one fixing portion 80.

[0047] In the lighting device A1, for example, a heat dissipation sheet may be disposed between the front surface of the base portion 12a of the heat dissipation block 12 and the substrate 2. This allows the lighting device A1 to efficiently conduct heat generated in the multiple light sources 1 and the substrate 2 from the substrate 2 to the base portion 12a, thereby further reducing the temperature rise of the multiple light sources 1 and further improving the light-emitting efficiency of the multiple light sources 1.

[0048] The first embodiment and the modifications described above are merely a part of the various embodiments and modifications of the present disclosure.

[0049] (Embodiment 2) 5, the lighting device A1 according to the second embodiment differs from the lighting device A1 according to the first embodiment in that each storage section 7 has a reflecting section 90. Note that, with respect to the lighting device A1 according to the second embodiment, the same components as those of the lighting device A1 according to the first embodiment (see FIGS. 1 to 4) are denoted by the same reference numerals and description thereof will be omitted.

[0050] (1)Reflector As shown in Fig. 5, each storage section 7 has a reflecting section 90. Each reflecting section 90 is configured to reflect light from a light source 1 corresponding to an optical component (target component) 3 stored in the target storage section 7. Each reflecting section 90 is disposed on a surface (contact surface) 9 that comes into contact with the target component 3. Each reflecting section 90 is, for example, a reflecting plate, a reflecting mirror, or the like, and is disposed on the inner peripheral surface (contact surface 9) of the target storage section 7.

[0051] (2) Effects In the lighting device A1 of the second embodiment, each storage section 7 has a reflecting section 90, and therefore the extraction efficiency of light emitted from the emission surfaces of the plurality of optical components 3 can be improved more than in the lighting device A1 of the first embodiment.

[0052] (3) Variations As a modification of the second embodiment, the same modifications as those of the lighting device A1 according to the modification of the first embodiment are possible. Therefore, the lighting device A1 according to the modification of the second embodiment also achieves the same effects as the lighting device A1 according to the second embodiment.

[0053] Each storage section 7 has a reflecting section 90, but not all storage sections 7 need to have a reflecting section 90. In other words, it is sufficient that at least one storage section 7 out of the multiple storage sections 7 has a reflecting section 90. Each reflecting section 90 is not limited to a reflecting plate, a reflecting mirror, or the like, and may be configured, for example, by metal deposition on the inner circumferential surface (contact surface 9) of the target storage section 7 to form a reflective surface. Furthermore, for example, when the target storage section 7 is white in color, each reflecting section 90 may be configured such that the inner circumferential surface (contact surface 9) of the target storage section 7 itself forms the reflective surface.

[0054] The holder 4 has both the optical component 3 and the reflecting unit 90 in each storage unit 7, but may have only the reflecting unit 90. In other words, the holder 4 may have the reflecting unit 90 instead of the optical component 3 in each storage unit 7. Furthermore, instead of having a lens as each optical component 3, the holder 4 may have, for example, a reflecting plate, a reflecting mirror, or the like.

[0055] The second embodiment and the modifications described above are merely a part of the various embodiments and modifications of the present disclosure.

[0056] (Embodiment 3) The lighting device A1 according to the third embodiment differs from the lighting device A1 according to the first embodiment in that the boundary portion 14 of the holder 4 has a blocking portion 17 (see FIG. 6) instead of the connecting portion 16. Note that, with respect to the lighting device A1 according to the third embodiment, the same components as those of the lighting device A1 according to the first embodiment (see FIGS. 1 to 4) are denoted by the same reference numerals and will not be described.

[0057] (1) Breaker Each boundary portion 14 of the holder 4 has a plurality of blocking portions 17. Each blocking portion 17 blocks communication between adjacent units 40 (for example, between a first unit 41 and a second unit 42). Each blocking portion 17 has a first piece 5 and a second piece 6. The first piece 5 is, for example, plate-shaped (for example, flat). The material of the first piece 5 is, for example, resin. The thickness of the first piece 5 is thinner than the thickness of the base portion 18. The second piece 6 is, for example, plate-shaped (for example, flat). The material of the second piece 6 is, for example, resin. The thickness of the second piece 6 is the same as the thickness of the first piece 5. The second piece 6 overlaps the first piece 5 in the vertical direction of the substrate 2. The second piece 6 is located further rearward than the first piece 5. The multiple blocking portions 17 are located at multiple positions in the boundary portion 14 between adjacent units 40. The multiple blocking portions 17 are located at predetermined intervals.

[0058] As shown in FIG. 6 , the first piece 5 is attached to, for example, an end of the base portion 18 of the holder 4 of the first unit 41 (the right end in the example of FIG. 6 ). The second piece 6 is attached to, for example, an end of the base portion 18 of the holder 4 of the second unit 42 (the left end in the example of FIG. 6 ). In this embodiment, when the first unit 41 and the second unit 42 are fixed to the board 2 by the respective fixing portions 80, the distance (first distance) between the tip of the first piece 5 and the left end of the base portion 18 of the holder 4 of the second unit 42 is maintained at a constant distance H1. Also, in this embodiment, when the first unit 41 and the second unit 42 are fixed to the board 2 by the respective fixing portions 80, the distance (second distance) between the tip of the second piece 6 and the right end of the base portion 18 of the holder 4 of the first unit 41 is the same as the first distance. That is, each blocking portion 17 is configured to ensure a constant distance H1 between adjacent units 40.

[0059] (2) Effects In the lighting device A1 of the third embodiment, the boundary portion 14 has the blocking portion 17 that blocks the adjacent units 40 (for example, between the first unit 41 and the second unit 42), and therefore, it is possible to separate the effects of expansion and contraction of each unit 40 in the holder 4. Therefore, the lighting device A1 of the third embodiment further reduces misalignment between the multiple light sources 1 and the multiple optical components 3, similar to the case of the connecting portion 16 in the lighting device A1 of the first embodiment.

[0060] Furthermore, in the lighting device A1 of the third embodiment, the blocking sections 17 ensure a certain distance H1 between the adjacent units 40, which allows each unit 40 to move in the second direction D2 (see FIG. 6 ) due to, for example, heat from the multiple light sources 1. Therefore, the lighting device A1 of the third embodiment reduces deformation, such as warping, of each unit 40 caused by, for example, heat from the multiple light sources 1.

[0061] (3) Variations As a modification of the third embodiment, the same modifications as those of the lighting device A1 according to the modification of the first embodiment are possible. Therefore, the lighting device A1 according to the modification of the third embodiment also achieves the same effects as the lighting device A1 according to the third embodiment.

[0062] Each boundary 14 has a plurality of blocking portions 17, but may have a single blocking portion 17. In the lighting device A1 of embodiment 3, the first distance and the second distance are the same, but may be different distances. Furthermore, in the lighting device A1 of embodiment 3, each storage section 7 may have the reflecting portion 90 in the lighting device A1 of embodiment 2.

[0063] The third embodiment and the modifications described above are merely a part of the various embodiments and modifications of the present disclosure.

[0064] The present disclosure is not limited to the above-described embodiments, and at least some of the configurations of the embodiments and modified examples can be combined as appropriate and applied.

[0065] (Aspect) The present specification discloses the following aspects.

[0066] The illumination device (A1) according to the first aspect includes a plurality of light sources (1), a substrate (2), a plurality of optical components (3), and a holder (4). The substrate (2) arranges the plurality of light sources (1). The plurality of optical components (3) correspond to the plurality of light sources (1). The holder (4) holds the plurality of optical components (3) so that the plurality of optical components (3) are arranged in a staggered pattern. The holder (4) is divided into a plurality of units (40). The holder (4) has a boundary portion (14) between a first unit (41) and a second unit (42) that are adjacent to each other among the plurality of units (40). The boundary portion (14) separates the influence of the first unit (41) on the second unit (42). The boundary portion (14) is provided along the outer periphery of the plurality of optical components (3) arranged in a staggered pattern.

[0067] According to this aspect, the positional deviation between the plurality of light sources (1) and the plurality of optical components (3) is reduced.

[0068] The lighting device (A1) according to the second aspect is the same as the lighting device (A1) according to the first aspect, in which the boundary portion (14) of the holder (4) has a gap (15) along the outer periphery of the plurality of optical components (3) arranged in a staggered pattern.

[0069] According to this aspect, the positional deviation between the plurality of light sources (1) and the plurality of optical components (3) is further reduced.

[0070] The lighting device (A1) according to the third aspect is the lighting device according to the first or second aspect, in which the boundary portion (14) of the holder (4) has elasticity and a connecting portion (16) that connects the first unit (41) and the second unit (42) adjacent to each other.

[0071] According to this aspect, the positional deviation between the plurality of light sources (1) and the plurality of optical components (3) is further reduced.

[0072] In the lighting device (A1) according to the fourth aspect, in the first or second aspect, the boundary portion (14) of the holder (4) has a blocking portion (17) that blocks the space between the adjacent first unit (41) and second unit (42). The blocking portion (17) has a first piece (5) and a second piece (6) that overlaps with the first piece (5) in a vertical direction perpendicular to the direction along one surface of the substrate (2).

[0073] According to this aspect, the positional deviation between the plurality of light sources (1) and the plurality of optical components (3) is further reduced.

[0074] The lighting device (A1) according to the fifth aspect is any one of the first to fourth aspects, wherein the holder (4) has at least one fixing portion (80) that fixes at least one unit (40) of the plurality of units (40) to the substrate (2).

[0075] According to this embodiment, the positional deviation between the plurality of light sources (1) and the plurality of optical components (3) is further reduced.

[0076] The lighting device (A1) according to the sixth aspect is the lighting device according to the fifth aspect, wherein the holder (4) has a determining portion (83) that determines the vertical position of at least one unit (40) that is perpendicular to the direction along one surface of the substrate (2).

[0077] According to this embodiment, the unit (40) restricts the substrate (2) from moving in the vertical direction.

[0078] The illumination device (A1) according to a seventh aspect is any one of the first to sixth aspects, wherein the holder (4) has a plurality of storage sections (7) for storing a plurality of optical components (3). At least one of the plurality of storage sections (7) has a holding claw (8) for holding a target component (3) that is a corresponding optical component (3) among the plurality of optical components (3) in a state where the target component (3) is stored.

[0079] According to this aspect, it is possible to fit the target parts (3) into each storage section (7), and the target parts (3) can be attached to each storage section (7) with a simple configuration.

[0080] The lighting device (A1) according to an eighth aspect is the lighting device (A1) of the seventh aspect, wherein at least one storage section (7) has a reflecting section (90) that reflects light from the light source (1) corresponding to the target component.

[0081] According to this aspect, it is possible to improve the extraction efficiency of light emitted from the emission surfaces of the plurality of optical components (3).

[0082] The lighting device (A1) according to a ninth aspect is the lighting device (A1) of any one of the first to eighth aspects, wherein at least one of the plurality of optical components (3) is a lens.

[0083] According to this aspect, the positional deviation between the plurality of light sources (1) and the plurality of lenses (3) is reduced. [Explanation of symbols]

[0084] 1 light source 2 boards 3 Optical components (target parts, lenses) 4 Holder 5 1st piece 6 second piece 7 Storage area 8 retaining claw 14 Boundary 15 Gap 16 Connection 17 Breaker 40 units 41 Unit 1 42 Unit 2 80 Fixed part 83 Regulations 90 Reflector A1 Lighting Equipment

Claims

1. Multiple light sources; a substrate on which the plurality of light sources are arranged; a plurality of optical components corresponding to the plurality of light sources; a holder that holds the plurality of optical components so that the plurality of optical components are arranged in a staggered pattern, The holder is It is divided into several units, a boundary portion is provided between a first unit and a second unit adjacent to each other among the plurality of units, the boundary portion separating an influence from the first unit on the second unit; the boundary portion is provided along the outer periphery of the plurality of optical components arranged in the staggered pattern. Lighting equipment.

2. the boundary portion of the holder has a gap along the outer periphery of the plurality of optical components arranged in the staggered pattern. The lighting device according to claim 1 .

3. the boundary portion of the holder has elasticity and includes a connecting portion connecting the first unit and the second unit adjacent to each other; 3. The lighting device according to claim 1 or 2.

4. the boundary portion of the holder has a blocking portion that blocks the first unit and the second unit adjacent to each other, The blocking portion has a first piece and a second piece that overlaps with the first piece in a vertical direction perpendicular to a direction along one surface of the substrate.

3. The lighting device according to claim 1 or 2.

5. the holder has at least one fixing portion that fixes at least one unit of the plurality of units to the substrate; The lighting device according to claim 1 .

6. the holder has a defining portion that defines a position of the at least one unit in a vertical direction perpendicular to a direction along one surface of the substrate; 6. The lighting device according to claim 5.

7. the holder has a plurality of storage sections for storing the plurality of optical components, At least one of the plurality of storage sections has a holding claw that holds a target component, which is a corresponding optical component among the plurality of optical components, in a state where the target component is stored therein. The lighting device according to claim 1 .

8. The at least one storage section has a reflecting section that reflects light from a light source corresponding to the target component.

8. The lighting device according to claim 7.

9. At least one optical component among the plurality of optical components is a lens. The lighting device according to claim 1 .

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