CN113078253A - Art exhibition lighting device - Google Patents
Art exhibition lighting device Download PDFInfo
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- CN113078253A CN113078253A CN202110358306.4A CN202110358306A CN113078253A CN 113078253 A CN113078253 A CN 113078253A CN 202110358306 A CN202110358306 A CN 202110358306A CN 113078253 A CN113078253 A CN 113078253A
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- Prior art keywords
- led
- cavity
- reflection
- lighting device
- green
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
- H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Abstract
The invention provides an art exhibition lighting device, which can ensure the divergence of a red light LED by reflecting the light of the red light LED by using an elliptical first reflecting cavity, so that the red light LED is uniformly mixed with the light emitted by a green light LED and a blue light LED, the problem of red light flooding is prevented, and the lighting color is fine and smooth. And still set up green glow LED and blue light LED in the step, its position is higher than ruddiness LED, can make homogeneity when mixing light further promote, and is preferred, and red light LED uses an oval lens of moulding plastics alone, guarantees that its light-emitting angle diverges.
Description
Technical Field
The invention relates to the technical field of LED packaging, in particular to an art exhibition lighting device.
Background
In addition to its use value, artwork has its special value, namely ornamental value, which is reflected in the spirit and culture-thereby satisfying certain aesthetic and mental needs of people. When the artwork is displayed, displayed or auctioned, the artwork is often decorated and decorated, most often by decorative lights. The aesthetic feeling of the handicraft decorative lamp is very important, the lamp light is an organic composition when the whole handicraft is displayed, and the final purpose is to enable the lamp light to uniformly illuminate the handicraft and enable the visual function of people to play a good role. The color temperature of the color light illumination can be adjusted to realize the more aesthetic appearance of the artwork, and the existing color light illumination often has the problem of red light flooding, which is unfavorable for the illumination effect due to red light offset caused by uneven light mixing. In addition, for point light sources or area light sources, the far field illumination may appear as a shadow due to insufficient uniformity due to a small exit angle of light.
Disclosure of Invention
Based on solving the above problems, the present invention provides an art exhibition lighting device, comprising:
an injection molded base comprising opposing upper and lower surfaces;
the first reflection cavity is positioned right below the second reflection cavity, and the opening size of the first reflection cavity is smaller than that of the second reflection cavity; when the reflector is viewed in a top view, the first reflecting cavity is in a first ellipse shape, the second reflecting cavity is in a second ellipse shape, and the focuses of the first ellipse and the second ellipse are overlapped and have the same eccentricity;
a step portion between the first reflective cavity and the second reflective cavity;
the first reflection part is arranged on the side wall of the first reflection cavity, and the second reflection part is arranged on the side wall of the second reflection cavity;
the red LED is fixed at the bottom of the first reflecting cavity;
a first green LED and a first blue LED fixed on the step part;
a first injection lens covering the red LED;
and the emission lens is fixed on the upper surface of the injection molding base body.
Further, the first injection lens and the emission lens are both in an elliptical shape, and the top end of the injection lens is lower than the step part.
Further, the sidewall inclination angle of the first reflective cavity is smaller than the sidewall inclination angle of the second reflective cavity.
Further, the device comprises only three LEDs, namely a red LED, a first green LED and a first blue LED; when the LED is viewed in a overlooking mode, the first green light LED, the red light LED and the first blue light LED are linearly arranged, and an included angle between the straight line and the long axis of the first ellipse is 30-65 degrees.
Further, the device only comprises five LEDs, namely the red LED, the first green LED, the first blue LED, the second green LED and the second red LED; when viewed from above, the first green light LED and the second green light LED are arranged on the major axis of the first ellipse, and the first blue light LED and the second blue light LED are arranged on the minor axis of the first ellipse.
Furthermore, the LED lamp further comprises a plurality of third reflection cavities on the step part and a third reflection part on the side wall of each third reflection cavity, the first green light LEDs and the first blue light LEDs are fixed to the third reflection cavities, and the opening size of each third reflection cavity is smaller than that of the corresponding first reflection cavity when the LED lamp is viewed from top.
Furthermore, the LED lamp further comprises a second injection molding lens, wherein the second injection molding lens covers the first green light LED and the first blue light LED, and is in an oval shape.
Further, the LED module also comprises a lead frame, and the red LED, the first green LED and the second blue LED form a surface mounting assembly through the lead frame and realize the independent control of different color lights.
Further, the lead frame comprises a first basal island portion, a second basal island portion and a third basal island portion, wherein the first basal island portion is arranged at the bottom of the first reflection cavity, and the red LED is fixed on the first basal island portion; the second basal island portion and the third basal island portion are arranged on the step portion, the first green light LED is fixed on the second basal island portion, and the first blue light LED is fixed on the third basal island portion.
According to the invention, the light of the red light LED is reflected by the elliptical first reflecting cavity, so that the divergence of the red light LED can be ensured, and further the red light LED is uniformly mixed with the light emitted by the green light LED and the blue light LED, the problem of red light flooding is prevented, and the illumination color is fine and smooth. And still set up green glow LED and blue light LED in the step, its position is higher than ruddiness LED, can make homogeneity when mixing light further promote, and is preferred, and red light LED uses an oval lens of moulding plastics alone, guarantees that its light-emitting angle diverges.
Drawings
Fig. 1 is a top view of an art exhibition lighting device of a first embodiment;
fig. 2 is a cross-sectional view of the art exhibition lighting device of the first embodiment;
fig. 3 is a cross-sectional view of the art show lighting device of the first embodiment (including the lead frame);
FIG. 4 is a top view of a lead frame;
fig. 5 is a top view of the art exhibition lighting device of the second embodiment;
fig. 6 is a sectional view of the art exhibition lighting device of the third embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
Referring to fig. 1 and 2, the art show lighting device of the present invention includes an injection molded base 10 formed through an injection molding process. The injection molded substrate 10 may be a polymeric material such as epoxy, silicone, polyimide, etc., and the injection molded substrate 10 itself may be transparent or translucent.
The injection molded substrate 10 has a first reflective cavity 12 and a second reflective cavity 13, and a step portion 16 is provided between the first reflective cavity 12 and the second reflective cavity 13. The first reflective cavity 12, the second reflective cavity 13, and the step portion 16 may be formed together by an injection mold, but the first reflective cavity 12 may be formed first, and then the second reflective cavity 13 and the step portion 16 may be formed. In particular, the sidewall inclination angle (with respect to the horizontal) of the first reflective cavity 12 is smaller than the sidewall inclination angle (with respect to the horizontal) of the second reflective cavity 13, which is designed to allow the red LEDs 21 to be reflected out at a larger angle.
The first reflective cavity 12 is located right below the second reflective cavity 13, and the opening size of the first reflective cavity 12 is smaller than the opening size of the second reflective cavity 13. Referring to fig. 1, when viewed from above, the first reflective cavity 12 has a first elliptical shape, the second reflective cavity 13 has a second elliptical shape, and the focal points of the first and second elliptical shapes are coincident and have the same eccentricity, that is, the two reflective cavities have a proportionally reduced shape structure.
The first reflective cavity 12 has a first reflective portion 14 on a sidewall thereof, and the second reflective cavity 13 has a second reflective portion 15 on a sidewall thereof. The first and second reflection parts 14 and 15 may be metal plating, for example, aluminum plating, silver plating, or the like. The first and second reflection parts 14 and 15 should be provided to be insulated from a lead frame described later.
The red LED21 is disposed at the bottom of the first reflective cavity 12 and covered by an injection molded lens 41. The injection lens 41 is oval and formed by an injection molding process, and is mainly used to increase the light emitting angle of the red LED 21. In particular, the tip of the injection lens 41 is lower than the step 16, for example, the tip of the injection lens 41 has a height difference Δ h from the step, so that the light emitted from the red LED can be mixed with the light emitted from the green LED and the blue LED at a position closer to the step 16 (lower position), so that a more uniform mixed light can be obtained at the subsequent emission of the emission lens 31.
The green light LED22 and the blue light LED are disposed on the step portion 16 in a spaced manner, and particularly, when viewed from above, the first green light LED22, the red light LED21 and the first blue light LED23 are linearly arranged, and an included angle between the straight line and a major axis of the first ellipse of the first reflective cavity 12 is 30-65 degrees.
An emission lens 31 is further arranged on the injection molding base body 10, the emission lens 31 is in an elliptical shape, and the emission angle can be increased, so that better uniformity can be ensured during far-field illumination, and far-field shadows are prevented from occurring. The emitter lens 31 may be glued or snap-fitted. A
In addition, the art exhibition lighting device of the present invention further includes a lead frame 50, see fig. 3 and 4. The lead frame 50 includes first, second, and third base island portions 51, 52, and 53 and first, second, and third pads 54, 55, and 56. The red LED21 is fixed on the first base island 51, and one end thereof is electrically connected to the first base island 51, and the other end thereof is electrically connected to the first pad 54, thereby realizing individual control of the red LED 21. Similarly, the green LED22 is fixed to the second base island portion 52 with one end electrically connected to the second base island portion 52 and the other end electrically connected to the second pad 55, thereby achieving individual control of the green LED 22. Similarly, the blue LED23 is fixed on the third base island portion 53, and one end thereof is electrically connected to the third base island portion 53, and the other end thereof is electrically connected to the third pad 56, thereby realizing individual control of the blue LED.
Wherein the lead frame 50 is partially encapsulated by the injection molded base 10 to obtain a surface mount component. The first base island portion 51 is disposed at the bottom of the first reflective cavity 12, and the second base island portion 52 and the third base island portion 53 are disposed on the step portion 16.
Second embodiment
Referring to fig. 5, the structure of this embodiment is substantially the same as that of the first embodiment except that the device includes five LEDs, i.e., the red LED21, the first green LED24 and the first blue LED26, and the second green LED25 and the second blue LED 27; the first and second green LEDs 24 and 25 are arranged on a major axis of the first ellipse of the first reflective cavity 12 and the first and second blue LEDs 26 and 27 are arranged on a minor axis of the first ellipse of the first reflective cavity 12 when viewed from above. At this time, due to the arrangement of the plurality of green light LEDs and the plurality of blue light LEDs, the angle between the green light LEDs and the long axis does not need to be additionally arranged, and the basic light mixing can be realized only by arranging the plurality of green light LEDs and the plurality of blue light LEDs in a staggered manner.
Third embodiment
Referring specifically to fig. 6, the structure of this embodiment is substantially the same as that of the first embodiment except that a plurality of third reflective cavities 18 are provided at the step portions 16 and third reflective portions 17 are provided on the side walls of the third reflective cavities 18, and green and blue LEDs are fixed in the third reflective cavities 18. In particular, the opening size of the third reflective cavity 18 is smaller than the opening size of the first reflective cavity 12 when viewed from above. The position of the third reflective cavity 18 can be set according to the positions of three LEDs of the first embodiment, and also according to the positions of five LEDs of the second embodiment. By the arrangement, the red light, the green light and the blue light can be emitted at a large angle, and the color temperature can be adjusted and the light can be uniformly mixed.
The three embodiments are the main design content of the invention, and the invention utilizes the elliptical first reflection cavity to reflect the light of the red light LED, so that the divergence of the red light LED can be ensured, and further the red light LED is uniformly mixed with the light emitted by the green light LED and the blue light LED, the problem of red light flooding is prevented, and the illumination color is fine and smooth. And still set up green glow LED and blue light LED in the step, its position is higher than ruddiness LED, can make homogeneity when mixing light further promote, and is preferred, and red light LED uses an oval lens of moulding plastics alone, guarantees that its light-emitting angle diverges.
The expressions "exemplary embodiment," "example," and the like, as used herein, do not refer to the same embodiment, but are provided to emphasize different particular features. However, the above examples and exemplary embodiments do not preclude their implementation in combination with features of other examples. While example embodiments have been shown and described, it will be apparent to those skilled in the art that modifications and changes may be made without departing from the scope of the invention as defined by the claims.
Claims (9)
1. An art exhibition lighting device comprising:
an injection molded base comprising opposing upper and lower surfaces;
the first reflection cavity is positioned right below the second reflection cavity, and the opening size of the first reflection cavity is smaller than that of the second reflection cavity; when the reflector is viewed in a top view, the first reflecting cavity is in a first ellipse shape, the second reflecting cavity is in a second ellipse shape, and the focuses of the first ellipse and the second ellipse are overlapped and have the same eccentricity;
a step portion between the first reflective cavity and the second reflective cavity;
the first reflection part is arranged on the side wall of the first reflection cavity, and the second reflection part is arranged on the side wall of the second reflection cavity;
the red LED is fixed at the bottom of the first reflecting cavity;
a first green LED and a first blue LED fixed on the step part;
a first injection lens covering the red LED;
and the emission lens is fixed on the upper surface of the injection molding base body.
2. An art show lighting device as claimed in claim 1, wherein: the first injection molding lens and the emission lens are both in an elliptical shape, and the top end of the injection molding lens is lower than the step part.
3. An art show lighting device as claimed in claim 2, wherein: the sidewall inclination angle of the first reflective cavity is smaller than the sidewall inclination angle of the second reflective cavity.
4. An art show lighting device as claimed in claim 1, wherein: the device comprises only three LEDs, namely a red LED, a first green LED and a first blue LED; when the LED is viewed in a overlooking mode, the first green light LED, the red light LED and the first blue light LED are linearly arranged, and an included angle between the straight line and the long axis of the first ellipse is 30-65 degrees.
5. An art show lighting device as claimed in claim 1, wherein: the device only comprises five LEDs, namely the red LED, the first green LED, the first blue LED, the second green LED and the second blue LED; when viewed from above, the first green light LED and the second green light LED are arranged on the major axis of the first ellipse, and the first blue light LED and the second blue light LED are arranged on the minor axis of the first ellipse.
6. An art show lighting device as claimed in any one of claims 1 to 5 wherein: the LED lamp further comprises a plurality of third reflection cavities on the step portion and a third reflection portion on the side wall of each third reflection cavity, the first green light LEDs and the first blue light LEDs are fixed to the third reflection cavities, and when the LED lamp is viewed in a plan view, the opening size of each third reflection cavity is smaller than that of the corresponding first reflection cavity.
7. The method of manufacturing an art exhibition lighting device as claimed in claim 6, wherein: the LED lamp further comprises a second injection molding lens, wherein the second injection molding lens covers the first green light LED and the first blue light LED, and is in an oval shape.
8. A method of manufacturing an art show lighting device according to claim 1, wherein: the LED module also comprises a lead frame, and the red LED, the first green LED and the second blue LED form a surface mounting assembly through the lead frame and realize the independent control of different color lights.
9. The method of manufacturing an art exhibition lighting device as claimed in claim 8, wherein: the lead frame comprises a first basal island part, a second basal island part and a third basal island part, wherein the first basal island part is arranged at the bottom of the first reflection cavity, and the red LED is fixed on the first basal island part; the second basal island portion and the third basal island portion are arranged on the step portion, the first green light LED is fixed on the second basal island portion, and the first blue light LED is fixed on the third basal island portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110358306.4A CN113078253B (en) | 2021-04-01 | 2021-04-01 | Art exhibition lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110358306.4A CN113078253B (en) | 2021-04-01 | 2021-04-01 | Art exhibition lighting device |
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| Publication Number | Publication Date |
|---|---|
| CN113078253A true CN113078253A (en) | 2021-07-06 |
| CN113078253B CN113078253B (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110358306.4A Active CN113078253B (en) | 2021-04-01 | 2021-04-01 | Art exhibition lighting device |
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| WO2012008598A1 (en) * | 2010-07-14 | 2012-01-19 | 岩谷産業株式会社 | Led package device |
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| CN108321149A (en) * | 2017-01-18 | 2018-07-24 | 惠州科锐半导体照明有限公司 | Light emission diode package member and light emitting diode indicator |
| US20200176643A1 (en) * | 2017-08-25 | 2020-06-04 | Cree Hiuzhou Solid State Lighting Company, Ltd. | Multiple led light source lens design in an integrated package |
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2021
- 2021-04-01 CN CN202110358306.4A patent/CN113078253B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050221518A1 (en) * | 2004-03-31 | 2005-10-06 | Peter Andrews | Reflector packages and methods for packaging of a semiconductor light emitting device |
| KR100643466B1 (en) * | 2005-09-27 | 2006-11-10 | 엘지전자 주식회사 | Silicon optical bench and light source of laser display having the same |
| WO2009082079A1 (en) * | 2007-12-26 | 2009-07-02 | Heesung Electronics Co., Ltd. | Led package for backlight |
| US20100103660A1 (en) * | 2008-10-24 | 2010-04-29 | Cree Led Lighting Solutions, Inc. | Array layout for color mixing |
| WO2012008598A1 (en) * | 2010-07-14 | 2012-01-19 | 岩谷産業株式会社 | Led package device |
| CN202282348U (en) * | 2011-05-27 | 2012-06-20 | 惠州科锐半导体照明有限公司 | LED package and LED display |
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| CN108183984A (en) * | 2017-12-26 | 2018-06-19 | 广东欧珀移动通信有限公司 | Input and output module and electronic device |
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| Publication number | Publication date |
|---|---|
| CN113078253B (en) | 2022-11-11 |
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