CN216716095U - Reflection cup and LED lamp - Google Patents
Reflection cup and LED lamp Download PDFInfo
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- CN216716095U CN216716095U CN202220051998.8U CN202220051998U CN216716095U CN 216716095 U CN216716095 U CN 216716095U CN 202220051998 U CN202220051998 U CN 202220051998U CN 216716095 U CN216716095 U CN 216716095U
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Abstract
The embodiment of the application belongs to the technical field of illumination, and relates to a reflection cup and an LED lamp. The reflecting cup comprises a body, a light outlet is formed in the top of the body, a light inlet is formed in the bottom of the body, the aperture of the body decreases from the light outlet to the light inlet, a first reflecting portion and a second reflecting portion are arranged on the inner wall of the body, the first reflecting portion is a continuous paraboloid, and the second reflecting portion is a discontinuous paraboloid. The first reflection part of the present application can make the beam angle as small as possible; light emitted by the light source is reflected by the second reflecting part, then light spots mapped on the target surface present a plurality of stacked light source outlines, and when the number of the discontinuous paraboloids of the second reflecting part is enough, the shape of the light spots is close to a circle; light rays emitted by the light source are reflected by the first reflecting part and the second reflecting part and then mapped on light spots on the target surface to form main light spots, the outline of the light source in the main light spots is weakened, and the effect of optimizing the light spots is achieved.
Description
Technical Field
The application relates to the technical field of lighting, in particular to a reflecting cup and an LED lamp.
Background
The light reflecting cup is an optical device in the LED lamp and is mainly used for carrying out secondary light distribution on a light source, light spots mapped on a target surface of the LED lamp mainly comprise a main light spot and an auxiliary light spot, the auxiliary light spot refers to light which is emitted by the light source and is not directly mapped on the target surface through the light reflecting cup, and the main light spot refers to light which is emitted by the light source and is mapped on the target surface after being reflected by the light reflecting cup;
as shown in fig. 1, in order to make the beam angle of the light source as small as possible, the inner wall of the conventional reflective cup 1 is configured as a continuous paraboloid, but the light mixing capability of the continuous paraboloid is weak, so that the light spot mapped on the target surface by the LED lamp using the conventional reflective cup 1 will take the shape of the light source, in combination with fig. 2, when the light source is square, the main light spot mapped on the target surface after the light beam emitted by the light source is reflected by the conventional reflective cup 1 is a square-like outline, in combination with fig. 3, the light spot mapped on the target surface by the LED lamp using the conventional reflective cup 1 has a square-like outline, and the light spot effect is poor.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a reflective cup and an LED lamp, and is used for solving the problem that light spots mapped on a target surface by the LED lamp using the existing reflective cup are poor in light spot effect due to the fact that the light spots can be in the shape of a light source.
In order to solve the above technical problem, an embodiment of the present application provides a reflective cup, which adopts the following technical scheme:
a reflective cup, comprising: the light source comprises a body, wherein a light outlet is formed in the top of the body, a light inlet is formed in the bottom of the body, the aperture of the body is gradually reduced from the light outlet to the light inlet, a first reflecting part and a second reflecting part are arranged on the inner wall of the body, the first reflecting part is a continuous paraboloid, and the second reflecting part is a discontinuous paraboloid.
Furthermore, the first reflection portion is arranged close to the light outlet, and the second reflection portion is arranged close to the light inlet.
Further, the ratio of the heights of the first reflection part and the second reflection part is 2 to 4.
Further, the first reflection part is connected with the second reflection part.
Further, the first reflecting part comprises a first reflecting surface; the second reflecting part comprises a plurality of second reflecting surfaces which are sequentially connected.
Furthermore, the surfaces of the first light reflecting surface and the second light reflecting surface are provided with reflecting films.
Further, the second light reflecting surface is a plane or a convex surface.
Further, the shape of the second light reflecting surface is square, diamond, triangle or hexagon.
In order to solve the above technical problem, an embodiment of the present application further provides an LED lamp, which adopts the following technical scheme:
an LED light fixture comprising: a light source and a reflector cup as described above; the light source is arranged at the light inlet, and the light outlet surface of the light source faces the light outlet.
Further, the beam angle of the light emitted by the light source after passing through the reflecting cup is below 18 degrees.
Compared with the prior art, the embodiment of the application mainly has the following beneficial effects: the second reflecting part is set to be a discontinuous paraboloid, the second reflecting part is made to be a discontinuous plurality of surfaces, so that light spots which are mapped on a target surface after light rays emitted by the light source are reflected by each surface of the second reflecting part present a plurality of stacked light source outlines, and when the number of the discontinuous plurality of surfaces of the second reflecting part is large enough, the shape of the light spots is close to a circle; the light emitted by the light source is reflected by the first reflecting part and then mapped on the light spot on the target surface, and the light emitted by the light source is reflected by the second reflecting part and then mapped on the light spot on the target surface to form a main light spot, the light source outline in the main light spot is weakened, and the effect of optimizing the light spot is realized; the inner wall of the body is provided with the continuous parabolic first reflecting part and the discontinuous parabolic second reflecting part, so that the light spot effect is optimized on the premise that the beam angle of light rays emitted by the light source after being reflected by the reflecting cup is as small as possible.
Drawings
In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.
FIG. 1 is a schematic half-sectional view of a conventional reflector cup;
FIG. 2 is a schematic diagram of a main light spot of a light beam emitted from a light source reflected by a conventional reflector cup and then mapped on a target surface;
FIG. 3 is a pattern of spots on a target surface mapped by an LED lamp using a conventional reflector cup;
FIG. 4 is a schematic half-sectional view of a reflector cup according to an embodiment of the present invention;
FIG. 5 is a schematic half-sectional view of another exemplary reflector cup in accordance with embodiments of the present invention;
fig. 6 is a schematic diagram of light spots, which are reflected by the second reflecting portion of the reflecting cup and then mapped on a target surface, of light emitted from the light source according to the embodiment of the present invention;
FIG. 7 is a speckle pattern of an LED lamp using a reflector cup provided by an embodiment of the utility model, which is mapped on a target surface;
fig. 8 is a schematic half-sectional view of an LED lamp according to an embodiment of the present invention.
Reference numerals: 1. existing reflector cups; 2. a light reflecting cup; 21. a body; 22. a light outlet; 23. a light inlet; 24. a first reflection section; 241. a first light-reflecting surface; 25. a second reflection section; 251. a second light-reflecting surface; 3. a light source.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
The embodiment of the present application provides a reflective cup 2, as shown in fig. 4 and 5, the reflective cup 2 includes: the light source comprises a body 21, wherein a light outlet 22 is arranged at the top of the body 21, a light inlet 23 is arranged at the bottom of the body 21, the aperture of the body 21 decreases gradually from the light outlet 22 to the light inlet 23, a first reflecting part 24 and a second reflecting part 25 are arranged on the inner wall of the body 21, the first reflecting part 24 is a continuous paraboloid, and the second reflecting part 25 is a discontinuous paraboloid.
The embodiment of the application provides a reflection of light cup 2 is applied to LED lamps and lanterns on, reflection of light cup 2's theory of operation and beneficial effect do: the light source of the LED lamp is arranged at the light inlet 23, and the light emitting surface of the light source is arranged toward the light outlet 22, and the focuses of the first reflection part 24 and the second reflection part 25 in this application are on the light source; in the present application, the second reflection portion 25 is a discontinuous paraboloid, so that the second reflection portion 25 is a discontinuous plurality of surfaces, and with reference to fig. 6, after the light emitted by the light source is reflected by each surface of the second reflection portion 25, the light spot mapped on the target surface presents a plurality of stacked light source outlines, and when the number of the discontinuous plurality of surfaces of the second reflection portion 25 is large enough, the shape of the light spot approaches to a circle; the light emitted by the light source is reflected by the first reflecting part 24 and then mapped on the light spot on the target surface, and the light emitted by the light source is reflected by the second reflecting part 25 and then mapped on the light spot on the target surface to form a main light spot, the light source outline in the main light spot is weakened, and the effect of optimizing the light spot is realized; the inner wall of the body 21 is provided with the continuous paraboloid first reflecting part 24 and the discontinuous paraboloid second reflecting part 25, so that the light spot effect is optimized on the premise that the beam angle of the light emitted by the light source after being reflected by the reflecting cup 2 is as small as possible.
Further, the first reflection portion 24 is disposed adjacent to the light outlet 22, and the second reflection portion 25 is disposed adjacent to the light inlet 23. According to Etendue conservation theorem (Etendue constancy): the larger the light emitting surface is, the smaller the beam angle is, and since the aperture of the main body 21 decreases from the light outlet 22 to the light inlet 23, the closer the light beam angle of the light beam emitted from the light source passes through the first reflecting portion 24 to the light outlet 22, the smaller the beam angle of the reflected light beam is, and the smaller the light spot is, whereas the closer the light beam angle of the light beam emitted from the light source passes through the second reflecting portion 25 to the light inlet 23, the larger the beam angle of the reflected light beam is, and the larger the light spot is; with reference to fig. 7, in the present application, the second reflection portion 25 is disposed near the light outlet 22, so that the light spot mapped on the target surface after the light emitted by the light source is reflected by the second reflection portion 25 is larger than the light spot mapped on the target surface after the light emitted by the light source is reflected by the first reflection portion 24, and the light spot which is smaller and presents the shape of the light source is covered by the larger and approximately circular light spot, so that the LED lamp using the reflection cup 2 provided in the present application has no light source shape in the middle of the main light spot mapped on the target surface, and the effect of optimizing the light spot is further achieved; the light spot effect can be further optimized on the premise that the beam angle of the light emitted by the light source after being reflected by the reflecting cup 2 is as small as possible.
Further, the ratio of the heights of the first reflection part 24 and the second reflection part 25 is 2 to 4; for example, the height of the second reflection part 25 is 1cm when the height of the first reflection part 24 is 2cm, the height of the second reflection part 25 is 1cm when the height of the first reflection part 24 is 4cm, the height of the second reflection part 25 is 2cm when the height of the first reflection part 24 is 6cm, and so on; the light beam angle of the light emitted by the light source after being reflected by the reflection cup 2 is kept small, and the reduction of the central light intensity can be avoided.
Optimally, the ratio of the heights of the first reflection part 24 and the second reflection part 25 is 2.
Further, the first reflection portion 24 is connected to the second reflection portion 25; the first reflection part 24 and the second reflection part 25 completely cover the inner wall of the body 21, which is beneficial for the reflection cup 2 to reflect the light emitted by the light source.
Specifically, the first reflection part 24 is disposed at the upper end and the middle end of the inner wall of the body 21, and the second reflection part 25 is disposed at the lower end of the inner wall of the body 21.
Further, the first reflection portion 24 includes a first reflection surface 241, so that the first reflection portion 24 is a continuous paraboloid; the second reflecting portion 25 includes a plurality of second reflecting surfaces 251, and the plurality of second reflecting surfaces 251 are sequentially connected to make the second reflecting portion 25 a discontinuous paraboloid.
In this embodiment, the number of the second light reflecting surfaces 251 can be adjusted according to actual requirements.
Further, the surfaces of the first light reflecting surface 241 and the second light reflecting surface 251 are provided with reflecting films; the reflecting film is made of aluminum; of course, the material of the reflective film is not limited thereto, and only the reflective film can reflect light.
Further, the second light reflecting surface 251 is a plane or a convex surface; preferably, the second light reflecting surface 251 is a plane, which is beneficial to reducing the influence of the second reflecting part 25 on the light path.
Further, the shape of the second light reflecting surface 251 is square, diamond, triangle or hexagon; of course, the shape of the second light reflecting surface 251 is not limited thereto.
An embodiment of the present application further provides an LED lamp, as shown in fig. 8, the LED lamp includes: a light source 3 and a reflector cup 2 as described above; the light source 3 is disposed at the light inlet 23, and a light emitting surface of the light source 3 faces the light outlet 22.
The working principle and the beneficial effect of the LED lamp provided by the embodiment of the application are as follows: the second reflecting part 25 is set as a discontinuous paraboloid, so that the second reflecting part 25 is a discontinuous plurality of surfaces, and with reference to fig. 6, after the light emitted by the light source 3 is reflected by each surface of the second reflecting part 25, the light spot mapped on the target surface presents a plurality of stacked light source 3 outlines, and when the number of the discontinuous plurality of surfaces of the second reflecting part 25 is large enough, the shape of the light spot approaches to a circle; according to Etendue conservation theorem (Etendue constancy): the larger the light emitting surface is, the smaller the beam angle is, and since the aperture of the main body 21 decreases from the light outlet 22 to the light inlet 23, the closer the light beam angle of the light beam emitted from the light source 3 passes through the first reflecting portion 24 to the light outlet 22, the smaller the beam angle of the reflected light beam is, and the smaller the light spot is, whereas the closer the light beam angle of the light beam emitted from the light source 3 passes through the second reflecting portion 25 to the light inlet 23, the larger the beam angle of the reflected light beam is, and the larger the light spot is; with reference to fig. 7, the second reflection portion 25 is disposed adjacent to the light outlet 22, so that the light spot mapped on the target surface after the light emitted by the light source 3 is reflected by the second reflection portion 25 is larger than the light spot mapped on the target surface after the light emitted by the light source 3 is reflected by the first reflection portion 24, and the light spot which is smaller and presents the shape of the light source 3 is covered by the larger and approximately circular light spot, so that the shape of the light source 3 does not exist in the middle of the main light spot of the LED lamp mapped on the target surface, and the effect of optimizing the light spot is further realized; the light spot effect can be further optimized on the premise that the beam angle of the light emitted by the light source 3 after being reflected by the reflecting cup 2 is as small as possible.
In the embodiment of the application, the LED lamp can be a spotlight, a flashlight and other lamps.
Further, the beam angle of the light emitted by the light source 3 after passing through the reflector cup 2 is below 18 °.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the utility model and do not limit the scope of the utility model. This application is capable of embodiments in many different forms and the embodiments are provided so that this disclosure will be thorough and complete. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. A reflective cup, comprising: the light source comprises a body, wherein a light outlet is formed in the top of the body, a light inlet is formed in the bottom of the body, the aperture of the body is gradually reduced from the light outlet to the light inlet, a first reflecting part and a second reflecting part are arranged on the inner wall of the body, the first reflecting part is a continuous paraboloid, and the second reflecting part is a discontinuous paraboloid.
2. The reflective cup of claim 1, wherein the first reflective portion is disposed adjacent to the light exit opening and the second reflective portion is disposed adjacent to the light entrance opening.
3. The reflector cup as claimed in claim 2, wherein the ratio of the heights of the first and second reflective portions is 2 to 4.
4. The reflector cup of claim 2, wherein the first reflective portion is connected to the second reflective portion.
5. The reflector cup of claim 2, wherein the first reflective portion comprises a first reflective surface;
the second reflecting part comprises a plurality of second reflecting surfaces which are sequentially connected.
6. The reflector cup as claimed in claim 5, wherein the first and second reflective surfaces are provided with reflective films on their surfaces.
7. A reflector cup according to claim 5, wherein the second reflective surface is planar or convex.
8. The reflector cup of claim 5, wherein the second reflective surface is square, diamond, triangular, or hexagonal in shape.
9. An LED lamp, comprising: a light source and a reflector cup as claimed in any one of claims 1 to 8; the light source is arranged at the light inlet, and the light outlet surface of the light source faces the light outlet.
10. The LED lamp of claim 9, wherein the beam angle of the light emitted from the light source after passing through the reflector cup is 18 ° or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220051998.8U CN216716095U (en) | 2022-01-10 | 2022-01-10 | Reflection cup and LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220051998.8U CN216716095U (en) | 2022-01-10 | 2022-01-10 | Reflection cup and LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216716095U true CN216716095U (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220051998.8U Active CN216716095U (en) | 2022-01-10 | 2022-01-10 | Reflection cup and LED lamp |
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|---|---|
| CN (1) | CN216716095U (en) |
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- 2022-01-10 CN CN202220051998.8U patent/CN216716095U/en active Active
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