CN218936081U - Lighting device - Google Patents
Lighting device Download PDFInfo
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- CN218936081U CN218936081U CN202222147398.4U CN202222147398U CN218936081U CN 218936081 U CN218936081 U CN 218936081U CN 202222147398 U CN202222147398 U CN 202222147398U CN 218936081 U CN218936081 U CN 218936081U
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Abstract
The utility model relates to a lighting device, comprising a light source for emitting light, the light having a light emission axis; the reflecting structure is arranged opposite to the light source and comprises a first reflecting sheet, a first connecting sheet and a second reflecting sheet which are sequentially connected, the whole of the first reflecting sheet, the first connecting sheet and the second reflecting sheet is in a ladder shape, and the first connecting sheet is parallel to the light emission axis of the light ray; when the light source emits the light toward the reflecting structure and the light irradiates the reflecting structure, the first reflecting sheet and the second reflecting sheet reflect the light, and the first connecting sheet does not reflect the light. Under the same limitation of space height, the lighting device can enable light rays to be more uniformly emitted to a target position after being reflected by the reflecting structure, and the light loss is small.
Description
Technical Field
The present utility model relates to a lighting device, and more particularly, to a lighting device capable of emitting more uniform light under limited space height constraints.
Background
In the prior art, as shown in fig. 1, a light source module of a desk lamp (lighting device 1000 ') generally includes a light source 10' and a reflective sheet 20' opposite to the light source 10', and the reflective sheet 20' is planar as a whole, and light rays 101' emitted from the light source 10' are emitted from a light emitting structure 30' of the desk lamp (lighting device 1000 ') by reflection of the reflective sheet 20' after being irradiated to the reflective sheet 20 '. However, since the light source module tends to be thin, the space of the desk lamp housing 100' in which the light source module is located is limited, and the height H ' (or the thickness thereof) is also limited, so that the length of the reflective sheet 20' opposite to the light source 10' is also limited, and the light ray 101' reflected by the reflective sheet 20' and emitted from the light emitting structure 30' of the desk lamp is concentrated, so that the light intensity of the local area of the target position P ' is far higher than that of other areas of the target position P ', and the damage to human eyes is easily caused.
Disclosure of Invention
In order to solve the above problems, the present utility model provides a lighting device capable of emitting more uniform light under limited space height restrictions.
According to an aspect of the present utility model, there is provided a lighting device including:
a light source for emitting light having a light emission axis;
the reflecting structure is arranged opposite to the light source and comprises a first reflecting sheet, a first connecting sheet and a second reflecting sheet which are sequentially connected, the whole of the first reflecting sheet, the first connecting sheet and the second reflecting sheet is in a ladder shape, and the first connecting sheet is parallel to the light emission axis of the light ray;
when the light source emits the light toward the reflecting structure and the light irradiates the reflecting structure, the first reflecting sheet and the second reflecting sheet reflect the light, and the first connecting sheet does not reflect the light.
As an optional technical scheme, the reflecting structure further comprises a second connecting sheet and a third reflecting sheet, two ends of the second connecting sheet are respectively connected with the second reflecting sheet and the third reflecting sheet, the whole of the first reflecting sheet, the first connecting sheet, the second reflecting sheet, the second connecting sheet and the third reflecting sheet is in a ladder shape, and the second connecting sheet is parallel to the first connecting sheet; when the light source emits the light towards the reflecting structure and the light irradiates the reflecting structure, the third reflecting sheet reflects the light, and the second connecting sheet does not reflect the light.
As an alternative solution, the first reflective sheet is parallel to the third reflective sheet.
As an alternative technical scheme, a first angle is formed between the first reflecting sheet and the first connecting sheet, a second angle is formed between the second connecting sheet and the third reflecting sheet, the first angle is 135 degrees, and the second angle is 135 degrees.
As an optional technical scheme, the second reflecting sheet is provided with a first sub reflecting sheet, a first sub connecting sheet, a second sub reflecting sheet, a second sub connecting sheet and a third sub reflecting sheet which are sequentially connected, one end of the first sub reflecting sheet is connected with the first connecting sheet, one end of the third sub reflecting sheet is connected with the second connecting sheet, the whole of the first sub reflecting sheet, the first sub connecting sheet, the second sub reflecting sheet, the second sub connecting sheet and the third sub reflecting sheet is in a ladder shape, and the first sub connecting sheet and the second sub connecting sheet are parallel to the first connecting sheet; when the light source emits the light toward the reflecting structure and the light irradiates the second reflecting sheet, the first sub-reflecting sheet, the second sub-reflecting sheet and the third sub-reflecting sheet reflect the light, and the first sub-connecting sheet and the second sub-connecting sheet do not reflect the light.
As an alternative technical scheme, a third angle is formed between the second sub-reflecting sheet and the first sub-connecting sheet, a fourth angle is formed between the second sub-reflecting sheet and the second sub-connecting sheet, the third angle is 135 degrees, and the fourth angle is 135 degrees.
As an optional technical scheme, a fifth angle is formed between the first sub-reflecting sheet and the first sub-connecting sheet, a sixth angle is formed between the third sub-reflecting sheet and the second sub-connecting sheet, the fifth angle is smaller than the third angle, and the sixth angle is larger than the third angle.
As an alternative solution, the first reflective sheet has a first extending direction, the second reflective sheet extends along the first extending direction, the third reflective sheet extends along the first extending direction, and the lengths of the first reflective sheet, the second reflective sheet and the third reflective sheet are equal in the first extending direction.
As an alternative solution, the first connecting piece has a second extending direction, the second connecting piece extends along the second extending direction, and in the second extending direction, the lengths of the first connecting piece and the second connecting piece are equal.
As an optional technical scheme, the lighting device further comprises a light emitting structure, and the light emitted by the light source is reflected by the reflecting structure and then emitted by the light emitting structure.
In summary, under the limitation of the same space height, the reflective surface of the stepped reflective structure of the present utility model is more discrete than the reflective surface of the reflective structure in the prior art, so that the light beam can be more uniformly emitted to the target position after being reflected by the reflective structure, and the connecting sheet in the reflective structure does not reflect the light beam, so that the light device of the present utility model can reduce stray light emission and light loss.
The utility model will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the utility model thereto.
Drawings
FIG. 1 is a schematic diagram of a lighting device according to the prior art;
FIG. 2 is a schematic view of a lighting device of the present utility model;
fig. 3 is an enlarged schematic view of the second reflecting sheet at C in fig. 2.
Detailed Description
Referring to fig. 2 and 3, fig. 2 is a schematic diagram of an illumination device according to the present utility model; fig. 3 is an enlarged schematic view of the second reflection sheet in fig. 2.
Referring to fig. 2 and 3, the present utility model provides a lighting device 1000, where the lighting device 1000 includes a light source 10 and a reflective structure 20, the light source 10 and the reflective structure 20 are disposed opposite to each other, the light source 10 can emit light rays 101 (or called beams) toward the reflective structure 20, the light rays 101 have a light emitting axis L, and in the schematic diagram shown in fig. 2, the light emitting axis L is parallel to a horizontal direction (certainly, the light emitting axis L is herein illustrated as being parallel to the horizontal direction, but not limited to this, and in other embodiments, the light emitting axis L may be not parallel to the horizontal direction but forms an angle with the horizontal direction). In this embodiment, the reflective structure 20 specifically includes a first reflective sheet 201, a first connecting sheet 202, and a second reflective sheet 203 that are sequentially connected, where the first reflective sheet 201, the first connecting sheet 202, and the second reflective sheet 203 are integrally stepped, and the first connecting sheet 202 is parallel to the light emitting axis L of the light ray 101. Thus, when the light source 10 emits the light ray 101 toward the reflective structure 20 and irradiates the light ray 101 to the reflective structure 20, the first reflective sheet 201 and the second reflective sheet 203 reflect the light ray 101, and the first connecting sheet 202 does not reflect the light ray 101 (i.e. the first connecting sheet 202 does not participate in the reflection of the light ray 101, it should be noted that, although the first connecting sheet 202 does not participate in the reflection of the light ray 101, in practice, for convenience of manufacturing, the first connecting sheet 202 and the first reflective sheet 201 and the second reflective sheet 203 may be made of the same material, and in the present utility model, the main reason that the first connecting sheet 202 does not participate in the reflection of the light ray 101 is that the first connecting sheet 202 is parallel to the light emission axis L of the light ray 101).
As can be seen from comparing fig. 1 and fig. 2, under the same limitation of space height (for example, in the case that the height H 'of the housing 100' of the lighting device 1000 'in fig. 1 is equal to the height H of the housing 100 of the lighting device of the present utility model), the reflecting surface of the stepped reflecting structure 20 of the present utility model is more discrete than the reflecting surface of the reflecting structure 20' in the prior art, so that the light ray 101 can be more uniformly emitted to the target position P after being reflected by the reflecting structure 20, and the first connecting sheet 202 connecting the first reflecting sheet 201 and the second reflecting sheet 203 of the reflecting structure 20 does not reflect the light ray 101, and the lighting device 1000 of the present utility model can also reduce the stray light emission and the light loss.
In order to make the reflective surface of the reflective structure 20 more discrete and obtain a more uniform light emitting effect within the limited space height H, the reflective structure 20 of the present utility model further has a second connecting piece 204 and a third reflective piece 205, and two ends of the second connecting piece 204 are respectively connected to the second reflective piece 203 and the third reflective piece 205. The first reflective sheet 201, the first connecting sheet 202, the second reflective sheet 203, the second connecting sheet 204, and the third reflective sheet 205 are integrally stepped, and the second connecting sheet 204 is parallel to the first connecting sheet 202 (in other words, the second connecting sheet 204 is also parallel to the light emitting axis L of the light ray 101). In this way, when the light source 10 emits the light ray 101 toward the reflective structure 20 and the light ray 101 irradiates the reflective structure 20, the third reflective sheet 205 reflects the light ray 101, and the second connecting sheet 204 does not reflect the light ray 101 (i.e. the second connecting sheet 204 does not participate in the reflection of the light ray 101, it should be noted that, although the second connecting sheet 204 does not participate in the reflection of the light ray 101, in actual operation, for convenience of manufacturing, the second connecting sheet 204, the first reflective sheet 201, the first connecting sheet 202, the second reflective sheet 203 and the third reflective sheet 205 may be made of the same material, and in the present utility model, the main reason that the second connecting sheet 204 does not participate in the reflection of the light ray 101 is that the second connecting sheet 204 is parallel to the light emission axis L of the light ray 101).
In the embodiment, the first reflective sheet 201 is parallel to the third reflective sheet 205, and a first angle d is formed between the first reflective sheet 201 and the first connecting sheet 202, a second angle e is formed between the second connecting sheet 204 and the third reflective sheet 205, the first angle d is equal to the second angle e, and the first angle d and the second angle e are both 135 degrees. In this way, the outgoing direction of the light ray 101 after being reflected by the reflecting structure 20 is perpendicular to the light emitting axis L, i.e. the light ray 101 is turned to be outgoing at 90 degrees. However, in other embodiments, the first reflective sheet 201 and the third reflective sheet 205 may not be parallel, but have a certain angle, and the first angle and the second angle may not be equal, and are not 135 degrees.
In order to make the light rays in the middle and outer regions of the target position P more uniform, the present utility model further configures the second reflecting sheet 203 to have a structure of the first sub-reflecting sheet 2031, the first sub-reflecting sheet 2032, the second sub-reflecting sheet 2033, the second sub-reflecting sheet 2034, and the third sub-reflecting sheet 2035 so as to strengthen the light ray intensity in the outer region of the target position P. Specifically, the second reflecting sheet 203 has a first sub-reflecting sheet 2031, a first sub-connecting sheet 2032, a second sub-reflecting sheet 2033, a second sub-connecting sheet 2034 and a third sub-reflecting sheet 2035 connected in sequence, one end of the first sub-reflecting sheet 2031 is connected to the first connecting sheet 202 (the other end of the first sub-reflecting sheet 2032 is connected to the first sub-connecting sheet 2032), one end of the third sub-reflecting sheet 2035 is connected to the second connecting sheet 204 (the other end of the third sub-reflecting sheet 2035 is connected to the second sub-connecting sheet 2034), the first sub-reflecting sheet 2031, the first sub-connecting sheet 2032, the second sub-reflecting sheet 2033, the second sub-connecting sheet 2034 and the third sub-reflecting sheet 2035 are in a step shape overall, and the first sub-connecting sheet 2032 and the second sub-connecting sheet 2034 are parallel to the first connecting sheet 202 (in other words, the first sub-connecting sheet 2032 and the second sub-connecting sheet 2034 are also parallel to the light emission axis L of the light ray 101); when the light source 10 emits the light ray 101 toward the reflective structure 20 and the light ray 101 irradiates the second reflective sheet 203, the first sub-reflective sheet 2031, the second sub-reflective sheet 2033 and the third sub-reflective sheet 2035 reflect the light ray 101, and the first sub-reflective sheet 2032 and the second sub-reflective sheet 2034 do not reflect the light ray 101 (i.e., the first sub-reflective sheet 2032 and the second sub-reflective sheet 2034 do not participate in the reflection of the light ray 101).
Further, referring to fig. 3, in the present embodiment, a third angle f is formed between the second sub-reflection sheet 2033 and the first sub-connection sheet 2032, and a fourth angle g is formed between the second sub-reflection sheet 2033 and the second sub-connection sheet 2034, wherein the third angle f is equal to the fourth angle g, and the magnitudes of the third angle f and the fourth angle g are 135 degrees. It is noted that the first sub-reflection sheet 2031 and the first sub-connection sheet 2032 have a fifth angle m therebetween, and the third sub-reflection sheet 2035 and the second sub-connection sheet 2034 have a sixth angle n therebetween, where the fifth angle m is smaller than the third angle f and the fourth angle g, preferably, the fifth angle m is between 130 degrees and 135 degrees, and the sixth angle n is greater than the third angle f and the fourth angle g, preferably, the sixth angle n is between 135 degrees and 140 degrees. That is, referring to fig. 3, the connection point of the first sub-reflection sheet 2031 and the first sub-connection sheet 2032 is a point a, the connection point of the second sub-connection sheet 2034 and the third sub-reflection sheet 2035 is a point B, and the fifth angle m is 130 degrees
Between 135 degrees means that the first sub-reflection sheet 2031 is deflected by 0 to 5 degrees clockwise with respect to the second sub-reflection sheet 2033 centering around the a-position, and between 135 degrees and 140 degrees means that the third sub-reflection sheet 2035 is deflected by 0 to 5 degrees counterclockwise with respect to the second sub-reflection sheet 2033 centering around the B-position. Thus, the outgoing direction of a portion of the light ray 1011 (i.e., a portion of the light ray 101) after being reflected by the second sub-reflection sheet 2033 is perpendicular to the light emission axis L, i.e., the light ray 101 is turned to be emitted at 90 degrees; meanwhile, the outgoing direction of the part of the light beam 1012 (i.e., the other part of the light beam 101) reflected by the first sub-reflection sheet 2031 is not perpendicular to the light emission axis L, but is deflected to the left by an angle compared to the part of the light beam 1011, and the outgoing direction of the part of the light beam 1013 (i.e., the still other part of the light beam 101) reflected by the third sub-reflection sheet 2035 is also not perpendicular to the light emission axis L, but is deflected to the right by an angle compared to the part of the light beam 1011. In this way, the light intensity of the area outside the target position P can be further enhanced by the reflection of the first sub-reflection sheet 2031 and the third sub-reflection sheet 2035, so that the light at all positions of the target position P is more uniform.
For convenience of description, in fig. 2, the light beam 101 emitted from the light source 10 is shown in a non-uniform manner. In fact, the light 101 initially emitted by the light source 10 is uniform, with the degree of density being approximately the same throughout. In addition, the light rays 101' and 101' in fig. 1 and fig. 2 are all ideal collimated light rays, but not limited thereto, and in actual practice, the light rays 101' and 101 may diverge to some extent.
It should be noted that, in order to make the light ray 101 emitted from the reflecting structure 20 of the present utility model more uniform, the first reflecting sheet 201 of the present utility model has a first extending direction, the second reflecting sheet 203 extends along the first extending direction, the third reflecting sheet 205 extends along the first extending direction, and the lengths of the first reflecting sheet 201, the second reflecting sheet 203 and the third reflecting sheet 205 are equal in the first extending direction; the first connecting piece 202 has a second extending direction (the second extending direction is parallel to the light emitting axis L of the light ray 201), the second connecting piece 204 extends along the second extending direction, and in the second extending direction, the lengths of the first connecting piece 202 and the second connecting piece 204 are equal.
The lighting device 1000 of the present utility model further includes a light emitting structure 30, wherein the light emitting structure 30 is disposed below the reflecting mechanism 20, and the light beam 101 emitted from the light source 10 is emitted from the light emitting structure 30 to the target position P after being reflected by the reflecting mechanism 20. The light emitting structure 30 may be made of a transparent material, but not limited to this, and in other embodiments, the light emitting structure 30 may be formed by an opaque housing with an opening, and the opening is disposed on the light emitting path. In another embodiment, the light emitting structure 30 may further comprise an optical film with a further light equalizing function.
In summary, under the limitation of the same space height, the reflection surface of the stepped reflection structure of the present utility model is more discrete than the reflection surface of the reflection structure in the prior art, so that the light beam can be more uniformly emitted to the target position after being reflected by the reflection structure, and the connection pieces (the first connection piece, the second connection piece, the first sub connection piece and the second sub connection piece) of the reflection structure do not reflect the light beam, so that the light beam can be emitted and the light loss can be reduced.
Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A lighting device, comprising:
a light source for emitting light having a light emission axis;
the reflecting structure is arranged opposite to the light source and comprises a first reflecting sheet, a first connecting sheet and a second reflecting sheet which are sequentially connected, the whole of the first reflecting sheet, the first connecting sheet and the second reflecting sheet is in a ladder shape, and the first connecting sheet is parallel to the light emission axis of the light ray;
when the light source emits the light toward the reflecting structure and the light irradiates the reflecting structure, the first reflecting sheet and the second reflecting sheet reflect the light, and the first connecting sheet does not reflect the light.
2. The lighting device of claim 1, wherein the reflective structure further comprises a second connecting piece and a third connecting piece, two ends of the second connecting piece are respectively connected with the second reflecting piece and the third reflecting piece, the first connecting piece, the second reflecting piece, the second connecting piece and the third reflecting piece are integrally in a step shape, and the second connecting piece is parallel to the first connecting piece; when the light source emits the light towards the reflecting structure and the light irradiates the reflecting structure, the third reflecting sheet reflects the light, and the second connecting sheet does not reflect the light.
3. A lighting device as recited in claim 2, wherein said first reflector sheet is parallel to said third reflector sheet.
4. A lighting device as recited in claim 3, wherein said first reflective sheet and said first connecting sheet have a first angle therebetween, and said second connecting sheet and said third reflective sheet have a second angle therebetween, said first angle being 135 degrees and said second angle being 135 degrees.
5. The lighting device of claim 1 or 2, wherein the second reflecting sheet comprises a first sub-reflecting sheet, a first sub-connecting sheet, a second sub-reflecting sheet, a second sub-connecting sheet and a third sub-reflecting sheet which are sequentially connected, one end of the first sub-reflecting sheet is connected to the first connecting sheet, the whole of the first sub-reflecting sheet, the first sub-connecting sheet, the second sub-reflecting sheet, the second sub-connecting sheet and the third sub-reflecting sheet is in a step shape, and the first sub-connecting sheet and the second sub-connecting sheet are parallel to the first connecting sheet; when the light source emits the light toward the reflecting structure and the light irradiates the second reflecting sheet, the first sub-reflecting sheet, the second sub-reflecting sheet and the third sub-reflecting sheet reflect the light, and the first sub-connecting sheet and the second sub-connecting sheet do not reflect the light.
6. A lighting device as recited in claim 5, wherein said second sub-reflector sheet and said first sub-connector sheet have a third angle therebetween, and wherein said second sub-reflector sheet and said second sub-connector sheet have a fourth angle therebetween, said third angle being 135 degrees and said fourth angle being 135 degrees.
7. A lighting device as recited in claim 6, wherein a fifth angle is provided between said first sub-reflector and said first sub-connector, and a sixth angle is provided between said third sub-reflector and said second sub-connector, said fifth angle being less than said third angle, said sixth angle being greater than said third angle.
8. A lighting device as recited in claim 2, wherein said first reflector plate has a first direction of extension, said second reflector plate extends entirely along said first direction of extension, said third reflector plate extends along said first direction of extension, and in said first direction of extension, said first reflector plate, said second reflector plate and said third reflector plate are equal in length.
9. A lighting device as recited in claim 2, wherein said first connecting tab has a second direction of extension, said second connecting tab extends along said second direction of extension, and in said second direction of extension, said first connecting tab and said second connecting tab are equal in length.
10. A lighting device as recited in claim 1, further comprising a light exit structure, wherein said light emitted by said light source is reflected by said reflective structure and then exits said light exit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147398.4U CN218936081U (en) | 2022-08-16 | 2022-08-16 | Lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222147398.4U CN218936081U (en) | 2022-08-16 | 2022-08-16 | Lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218936081U true CN218936081U (en) | 2023-04-28 |
Family
ID=86082792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222147398.4U Active CN218936081U (en) | 2022-08-16 | 2022-08-16 | Lighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218936081U (en) |
-
2022
- 2022-08-16 CN CN202222147398.4U patent/CN218936081U/en active Active
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