CN209991410U - Optical component and lighting apparatus - Google Patents
Optical component and lighting apparatus Download PDFInfo
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- CN209991410U CN209991410U CN201920379601.6U CN201920379601U CN209991410U CN 209991410 U CN209991410 U CN 209991410U CN 201920379601 U CN201920379601 U CN 201920379601U CN 209991410 U CN209991410 U CN 209991410U
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- 230000003287 optical effect Effects 0.000 title claims abstract description 48
- 230000004313 glare Effects 0.000 abstract description 11
- 238000005286 illumination Methods 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model provides an optical component and lighting apparatus, they can improve the illuminance on the illumination object when suppressing the glare. The optical member (100) distributes light from the light source (211). The optical component (100) is provided with a light-emitting unit (110) and a light-collecting unit (120). The light emitted from the light-collecting unit (120) is preferably directed in a direction farther from the light source (211) than the light emitted from the diverging unit (110). The light-condensing portion (120) and the light-diverging portion (110) are preferably both opposed to the light source (211). The light source (211) preferably irradiates light downward. The light-collecting unit (120) and the light-diffusing unit (110) are preferably both disposed below the light source (211).
Description
Technical Field
The utility model relates to an optical component and lighting apparatus.
Background
There is known a lighting fixture which is erected on a floor surface and used for floor lighting (for example, patent document 1). The lighting device described in patent document 1 includes a light source and a lamp body. The lamp body transmits and reflects light emitted from the light source to irradiate the light to the outside.
[ patent document ]
Patent document 1: japanese patent laid-open publication No. 2017-123215
However, in the lighting fixture described in patent document 1, since light is emitted upward from the lamp body, glare may occur. Further, when the light distribution is insufficient, the illuminance on the floor surface may become low.
SUMMERY OF THE UTILITY MODEL
The present invention has been made in view of the above problems, and an object of the present invention is to provide an optical member and a lighting fixture which can improve illuminance on an illumination target while suppressing glare.
The optical member disclosed in the present application distributes light from a light source. The optical member includes a diffusing portion and a condensing portion.
In the optical member disclosed in the present application, it is preferable that: the light emitted from the light collecting portion is directed to a direction farther from the light source than the light emitted from the diverging portion.
In the optical member disclosed in the present application, the condensing portion and the diverging portion are preferably both opposed to the light source.
In the optical member disclosed in the present application, the light source preferably irradiates light downward. The light condensing portion and the diverging portion are preferably disposed below the light source.
The optical member disclosed in the present application preferably further includes an annular portion having a central axis. The light source preferably has several light source elements. The plurality of light source elements are preferably arranged at positions corresponding to the annular portions. The diverging portion is preferably disposed outside the converging portion with respect to the central axis.
In the optical component disclosed in the present application, the divergent portion preferably directs light in a direction away from the central axis. The light-condensing portion preferably directs light in a direction toward the central axis.
The optical member disclosed in the present application preferably further includes a linear portion. The light source preferably has several light source elements. The plurality of light source elements are preferably arranged at positions corresponding to the linear portions. The divergent portion is preferably disposed on one side of the linear portion. The light-condensing portion is preferably disposed on the other side of the linear portion.
In the optical component disclosed in the present application, the diverging portion is preferably a concave lens.
In the optical member disclosed in the present application, the light condensing portion is preferably a convex lens.
The lighting apparatus disclosed in the present application includes the optical member and the light source.
According to the utility model discloses, can improve the illuminance on the illumination object when suppressing the glare.
Drawings
Fig. 1 is a perspective view of a lighting device according to an embodiment of the present invention.
Fig. 2 is a sectional view of a lighting device according to an embodiment of the present invention.
Fig. 3 is a perspective view of the light emitting part according to the embodiment of the present invention, as viewed from above.
Fig. 4 is a perspective view of the light emitting part according to the embodiment of the present invention, as viewed from below.
Fig. 5 is a sectional view taken along line V-V of fig. 3.
Fig. 6 is a sectional view taken along line V-V of fig. 3.
Fig. 7 is a sectional view of the lighting fixture.
Fig. 8a is a light distribution graph of the lighting fixture. Fig. 8b is a light distribution graph of a conventional lighting fixture.
Fig. 9 is a sectional view of the optical member.
Fig. 10a is a schematic perspective view of a lighting fixture. Fig. 10b is a schematic top view of a lighting fixture. Fig. 10c is a cross-sectional view of the optical component.
Description of the reference numerals
100 an optical component;
110 a diffusing part;
a 120 light-condensing portion;
130 an annular portion;
160 straight line parts;
200 lighting fixtures;
211 a light source;
212 a light source element;
c central axis.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and description thereof will not be repeated.
A lighting fixture 200 according to an embodiment of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a perspective view of a lighting fixture 200 according to an embodiment of the present invention. Fig. 2 is a sectional view of a lighting fixture 200 according to an embodiment of the present invention. Also, in the present specification, the X axis and the Y axis of the three-dimensional orthogonal coordinate system are parallel to the horizontal line, and the Z axis is parallel to the vertical line. The positive direction of the Z axis is a direction opposite to the direction of gravity, indicating an upward direction, and the negative direction of the Z axis is a direction of gravity, indicating a downward direction.
As shown in fig. 1, the lighting fixture 200 is cylindrical. The lighting fixture 200 is provided in a park, for example. The lighting fixture 200 is erected on the ground. The illumination target of the lighting fixture 200 is, for example, the ground. The lighting fixture 200 illuminates the ground near the lighting fixture 200. The height of the lighting fixture 200 is, for example, 300mm, 600mm, or 900 mm. The diameter of the lighting fixture 200 is, for example, 250 mm.
As shown in fig. 1 and 2, the lighting fixture 200 includes a light-emitting portion 210, a globe 220, a main body portion 230, a cover 240, a support 250, and a power supply portion 260.
The light emitting section 210 emits light. The light emitting section 210 has a light source. The light emitting portion 210 is mounted on the support 250. Details of the light emitting unit 210 will be described later with reference to fig. 3 and 4.
The lamp housing 220 is cylindrical. The globe 220 is a member that transmits light from the light emitting unit 210. The lamp cover 220 is formed of, for example, a translucent acrylic resin material having light transmittance. The globe 220 is disposed above the body 230.
The body 230 is cylindrical, and the body 230 is made of aluminum, for example. The top surface 232 of the body portion 230 is black. Therefore, the light emitted from light emitting unit 210 can be prevented from being reflected on top surface 232.
The cover 240 has a disk shape. The cover 240 is a member covering the upper end of the lamp housing 220. The cover 240 is made of, for example, aluminum.
The pillar 250 is cylindrical. The lower end of the strut 250 is mounted to the top surface 232 of the body portion 230. The upper end of the strut 250 is mounted on the cover 240.
The power supply unit 260 is provided with a power supply. The power supply section 260 supplies power to the light emitting section 210.
An optical component 100 according to an embodiment of the present invention will be described with reference to fig. 3 and 4. Fig. 3 is a perspective view of the light emitting unit 210 according to the embodiment of the present invention, as viewed from above. Fig. 4 is a perspective view of the light emitting unit 210 according to the embodiment of the present invention, as viewed from below.
As shown in fig. 3 and 4, the light emitting section 210 includes a light source 211, a substrate 214, and an optical member 100. In fig. 3, the substrate 214 is omitted for simplicity of the drawing.
In this embodiment, the light source 211 has a plurality of light source elements 212. The light source element 212 is mounted on the lower side of the substrate 214. The light source element 212 is, for example, an led (light Emitting diode). The plurality of light source elements 212 are arranged in a ring shape. The plurality of light source elements 212 are arranged at equal intervals. The light source 211 emits light downward. In the present embodiment, the light source 211 emits light downward, but the light source 211 may emit light upward or sideways, for example.
The optical member 100 distributes light from the light source 211. The optical member 100 includes a diffusing portion 110, a condensing portion 120, an annular portion 130, a flat portion 140, and a through hole 150.
The diffusing part 110 and the condensing part 120 are opposite to the light source 211. The diffusing part 110 and the condensing part 120 are disposed below the light source 211. Therefore, the light emitted downward from the light source 211 reaches the diffusing unit 110 and the condensing unit 120. In the present embodiment, the diffusing unit 110 and the condensing unit 120 are disposed below the light source 211, but the present invention is not limited thereto. For example, when the light source 211 emits light upward, the diffusing unit 110 and the condensing unit 120 may be disposed above the light source 211.
The annular portion 130 has a central axis C. The annular portion 130 is annular. The plurality of light source elements 212 are arranged at positions corresponding to the ring-shaped portion 130.
The flat portion 140 is flat. The flat portion 140 is connected to the light-condensing portion 120.
The through-hole 150 is formed in the flat portion 140. The through-hole 150 is formed in the center of the optical member 100.
Referring to fig. 5, the optical member 100 will be further described. Fig. 5 is a sectional view taken along line V-V of fig. 3.
As shown in fig. 5, the diffusing part 110 is disposed outside the light source element 212 with respect to the central axis C. The diffusing unit 110 is also disposed outside the light collecting unit 120 with respect to the central axis C. The diffusing part 110 is, for example, a concave lens. The diffuser 110 has an incident surface 112 and an emission surface 114. The incident surface 112 is concave. The exit surface 114 is planar. The light emitted from the light source element 212 enters the incident surface 112. The light enters the incident surface 112 and then exits the exit surface 114. The diffusing part 110 has a concave lens function. Therefore, the light incident on the incident surface 112 is emitted from the emission surface 114 as diffused light.
The light condensing portion 120 is, for example, a convex lens. The light condensing portion 120 has an incident surface 122 and an exit surface 124. The incident surface 122 is planar. The exit surface 124 is convex. The light emitted from the light source element 212 enters the incident surface 122. The light enters the incident surface 122 and then exits the exit surface 124. The condensing portion 120 has a convex lens function. Therefore, the light incident on the incident surface 122 is emitted from the emission surface 124 as collected light.
The light distribution of the optical member 100 will be described with reference to fig. 6. Fig. 6 is a sectional view taken along line V-V of fig. 3. In fig. 6, light LA represents light emitted from the divergent section 110. The light LB indicates light emitted from the light condensing unit 120.
As shown in fig. 6, the light LA is emitted from the divergent portion 110. The light LA is diffused light diffused by the diffusing portion 110. The diffuser 110 directs the light LA in a direction away from the central axis C.
The light LB is emitted from the light condensing unit 120. The light LB is collected light collected by the light collection unit 120. The light-condensing unit 120 directs the light LB toward the central axis C.
The light distribution of the lighting fixture 200 will be described with reference to fig. 7. Fig. 7 is a sectional view of the lighting fixture 200. In fig. 7, a light distribution curve LAR represents the light distribution of the light LA emitted from the divergent portion 110. The light distribution curve LBR indicates the light distribution of the light LB emitted from the condensing unit 120. The floor G indicates a floor on which the lighting fixture 200 is provided. A part of the body portion 230 is buried in the ground G.
As shown in fig. 7, the luminance of the globe 220 can be reduced by the light LA (diffused light) emitted from the divergent portion 110. As a result, glare on the globe 220 can be suppressed.
The light LB (condensed light) emitted from the condensing unit 120 can be used to illuminate the floor surface G near the lighting fixture 200. As a result, the illuminance on the floor G can be ensured.
Also, the light LA is directed toward the upper portion of the lamp housing 220. On the other hand, the light LB is directed to the lower portion of the lamp housing 220. That is, the light LB emitted from the condensing unit 120 is directed farther away from the light source 211 than the light LA emitted from the diverging unit 110. Here, the light LB emitted from the condensing portion 120 is directed downward than the light LA emitted from the diverging portion 110. Therefore, light can be uniformly emitted with respect to the lamp cover 220. As a result, the luminance unevenness on the shade 220 can be suppressed.
When the light source 211 emits light upward, the light LB emitted from the condensing unit 120 is directed upward more than the light LA emitted from the diverging unit 110. Therefore, light can be uniformly emitted with respect to the lamp cover 220. As a result, the luminance unevenness on the shade 220 can be suppressed.
The light distribution of the lighting fixture 200 will be described with reference to fig. 8. Fig. 8a is a light distribution graph of the lighting fixture 200. Fig. 8b is a light distribution graph of a conventional lighting fixture. In fig. 8a and 8b, the 0 ° direction indicates the upper direction of the lighting fixture, the 90 ° direction indicates the right direction of the lighting fixture, the 180 ° direction indicates the lower direction of the lighting fixture, and the 270 ° direction indicates the left direction of the lighting fixture.
As shown in fig. 8a, the light distribution curve of the lighting fixture 200 is mainly distributed in the 90 ° direction to 270 ° direction. On the other hand, in the light distribution curve of the lighting fixture 200, only a very small portion of light is distributed in the ranges of the 0 ° direction to 90 ° direction and the 270 ° direction to 0 ° direction. That is, the lighting fixture 200 emits light in the lower direction, and the light emission in the upper direction is suppressed as much as possible. Accordingly, glare can be suppressed. The light distribution curve of the lighting fixture 200 has light distribution characteristics having peaks in the diagonally right and left directions. Therefore, the ground G can be effectively irradiated.
On the other hand, as shown in fig. 8b, in the light distribution curve of the conventional lighting fixture, the light distribution is performed in the 0 ° direction to 90 ° direction and the 270 ° direction to 0 ° direction as well as in the 90 ° direction to 270 ° direction. That is, the light is emitted in the same manner in the lower direction and the upper direction of the conventional lighting apparatus. Accordingly, glare is generated. Further, the light is dispersed in the upper and lower directions, and thus the ground G near the lighting fixture 200 cannot be effectively irradiated.
As described above with reference to fig. 1 to 8, optical member 100 distributes light from light source 211. The optical member 100 includes a diffusing unit 110 and a condensing unit 120. Therefore, the light emitted from the divergent portion 110 is emitted to diffuse the light. As a result, glare can be suppressed. For example, the brightness on the lamp cover 220 is reduced, so that glare can be suppressed. The light emitted from the light collecting unit 120 is emitted as collected light. Therefore, the illuminance on the illumination target can be increased. For example, the illuminance on the ground G can be increased. In particular, the ground G near the lighting fixture 200 can be effectively illuminated.
The light emitted from the condensing portion 120 is directed farther from the light source 211 than the light emitted from the diverging portion 110. Therefore, the diffusing part 110 irradiates the vicinity of the light source 211, and the condensing part 120 irradiates a place far from the light source 211. For example, the diverging section 110 may illuminate upward, and the converging section 120 may illuminate downward. As a result, uniform light emission can be achieved, and luminance unevenness can be suppressed. For example, unevenness in brightness on the shade 220 of the lighting fixture 200 can be suppressed.
The light source 211 irradiates light downward. The condensing unit 120 and the diverging unit 110 are disposed below the light source 211. Therefore, the light emitted from the light source 211 passes through the condensing unit 120 and the diverging unit 110 and is emitted downward. Therefore, an illumination object located below, such as the ground G, can be illuminated.
The optical component 100 may have a shape different from the optical component 100 described with reference to fig. 5. The optical component 100 is described with reference to fig. 9. Fig. 9 is a sectional view of the optical member 100. The optical member 100 of fig. 9 has the same configuration as the optical member 100 described with reference to fig. 5 except that the emission surface 114 of the diffusing portion 110 is curved and the incident surface 122 of the condensing portion 120 is curved, and therefore, the description of the overlapping portions is omitted.
As shown in fig. 9, the diffusing part 110 is disposed outside the light source element 212 with respect to the central axis C. The diffusing unit 110 is also disposed outside the light collecting unit 120 with respect to the central axis C. The diffuser 110 has an incident surface 112 and an emission surface 114. The incident surface 112 is concave. The emission surface 114 is curved. The light emitted from the light source element 212 enters the incident surface 112. The light enters the incident surface 112 and then exits the exit surface 114. The diffusing part 110 has a concave lens function. Therefore, the light incident on the incident surface 112 is emitted from the emission surface 114 as diffused light.
The light condensing portion 120 has an incident surface 122 and an exit surface 124. The incident surface 122 is curved. Specifically, the incident surface 122 is convex. The exit surface 124 is convex. The light emitted from the light source element 212 enters the incident surface 122. The light enters the incident surface 122 and then exits the exit surface 124. The condensing portion 120 has a convex lens function. Therefore, the light incident on the incident surface 122 is emitted from the emission surface 124 as collected light.
The optical component 100 of fig. 9 includes the diffusing part 110 and the condensing part 120, similarly to the optical component 100 of fig. 5. Therefore, the light emitted from the divergent portion 110 is emitted to diffuse the light. As a result, glare can be suppressed. For example, the brightness on the lamp cover 220 is reduced, so that glare can be suppressed. The light emitted from the light collecting unit 120 is emitted as collected light. Therefore, the illuminance on the illumination target can be increased. For example, the illuminance on the ground G can be increased. In particular, the ground G near the lighting fixture 200 can be effectively illuminated.
In the lighting fixture 200 described with reference to fig. 1 to 9, the plurality of light source elements 212 are arranged in a ring shape, but the plurality of light source elements 212 may be arranged in a linear shape.
The lighting fixture 200 will be described with reference to fig. 10. Fig. 10a is a schematic perspective view of the lighting fixture 200. Fig. 10b is a schematic top view of the lighting fixture 200. Fig. 10c is a cross-sectional view of optical component 100.
As shown in fig. 10a, the lighting fixture 200 is substantially rectangular parallelepiped. The lighting fixture 200 is installed on a ceiling, a wall surface, or a floor, for example.
As shown in fig. 10b, a plurality of light source elements 212 are linearly arranged. The plurality of light source elements 212 are arranged at equal intervals. The optical member 100 extends linearly in the X-axis direction.
As shown in fig. 10c, the optical member 100 includes the diffusing part 110, the condensing part 120, and the linear part 160. The straight portion 160 extends straight in the X-axis direction. The plurality of light source elements 212 are disposed at positions corresponding to the linear portions 160.
The diffusing part 110 is disposed on one side of the linear part 160. Specifically, the diffusing portion 110 is disposed on the left side of the linear portion 160. Therefore, the diffusing portion 110 emits diffused light to the left side. The light collecting portion 120 is disposed on the other side of the linear portion 160. Specifically, the light collecting unit 120 is disposed on the right side of the linear unit 160. Therefore, the light condensing unit 120 emits the condensed light to the right side. In this manner, optical component 100 can emit diffuse light to one side and concentrated light to the other.
As described above, the embodiments of the present invention are explained with reference to the drawings (fig. 1 to 10). However, the present invention is not limited to the above-described embodiments, and can be implemented in various ways without departing from the scope of the invention. For convenience of understanding, the drawings mainly schematically show the respective components, and for convenience of drawing, the thicknesses, lengths, numbers, and the like of the respective components may be different from those of the actual components. The materials, shapes, dimensions, and the like of the respective constituent elements shown in the above embodiments are only examples, and are not particularly limited, and various modifications can be made without substantially departing from the effects of the present invention.
Claims (6)
1. An optical member for distributing light from a light source,
comprises a light emitting part and a light collecting part,
the light-condensing portion and the light-diffusing portion are both opposed to the light source,
the light source irradiates light downward,
the light-condensing portion and the light-emitting portion are both disposed below the light source,
the diverging portion is a concave lens and,
the light-condensing portion is a convex lens.
2. Optical component according to claim 1,
the light emitted from the light collecting portion is directed to a direction farther from the light source than the light emitted from the diverging portion.
3. Optical component according to claim 1 or 2,
further comprises an annular part having a central axis,
the light source has a number of light source elements,
the plurality of light source elements are arranged at positions corresponding to the annular part,
the diffusing portion is disposed outside the light collecting portion with respect to the central axis.
4. Optical component according to claim 3,
the diverging portion directs light in a direction away from the central axis,
the light collecting unit emits light in a direction toward the central axis.
5. Optical component according to claim 1 or 2,
further comprises a straight line part, and a straight line part,
the light source has a number of light source elements,
the plurality of light source elements are arranged at positions corresponding to the straight line portions, the radiating portions are arranged on one side of the straight line portions,
the light-condensing portion is disposed on the other side of the linear portion.
6. A lighting fixture is characterized by comprising:
the optical component of any one of claims 1 to 5; and
a light source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-063567 | 2018-03-29 | ||
| JP2018063567A JP2019175722A (en) | 2018-03-29 | 2018-03-29 | Optical member and lighting fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209991410U true CN209991410U (en) | 2020-01-24 |
Family
ID=68169638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920379601.6U Active CN209991410U (en) | 2018-03-29 | 2019-03-22 | Optical component and lighting apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019175722A (en) |
| CN (1) | CN209991410U (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10241419A (en) * | 1997-02-28 | 1998-09-11 | Matsushita Electric Works Ltd | Street lamp |
| JP5899508B2 (en) * | 2011-04-28 | 2016-04-06 | パナソニックＩｐマネジメント株式会社 | LIGHT EMITTING DEVICE AND LIGHTING DEVICE USING THE SAME |
| JP6052662B2 (en) * | 2011-08-24 | 2016-12-27 | パナソニックＩｐマネジメント株式会社 | lighting equipment |
| JP2014002949A (en) * | 2012-06-19 | 2014-01-09 | Toshiba Corp | Luminaire |
-
2018
- 2018-03-29 JP JP2018063567A patent/JP2019175722A/en active Pending
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2019
- 2019-03-22 CN CN201920379601.6U patent/CN209991410U/en active Active
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| Publication number | Publication date |
|---|---|
| JP2019175722A (en) | 2019-10-10 |
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