CN108777256B - Eyeshield LED lamp for classroom - Google Patents
Eyeshield LED lamp for classroom Download PDFInfo
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- CN108777256B CN108777256B CN201810417533.8A CN201810417533A CN108777256B CN 108777256 B CN108777256 B CN 108777256B CN 201810417533 A CN201810417533 A CN 201810417533A CN 108777256 B CN108777256 B CN 108777256B
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- light
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- led lamp
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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
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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
-
- 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 patent discloses an eyeshield LED lamp for classroom, including the lamp shade, LED luminescence chip, its characterized in that still includes blue light subducts the device, blue light subducts the blue light that 400 supple with an ice 450nm wavelength and subducts the complementary yellow light of this wavelength blue light of blue light subducting the device. This patent is projected the light of different wavelengths to different positions through the beam split effect of prism, then subducts blue light and the complementary yellow light with the blue light simultaneously. Therefore, the eyesight is prevented from being damaged by blue light, the color balance of the light source can be kept, and the color rendering property of the light source is ensured.
Description
Technical Field
This patent belongs to teaching equipment technical field, particularly relates to an eyeshield LED lamp for classroom.
Background
The LED light source has been widely applied to various fields in the prior art, and is accepted by the market with the advantages of energy conservation and environmental protection. LED lamps have been widely used in the prior art for illumination. In the prior art, the LED lamp is widely applied to the fields of enterprises, education and the like. Is a common lighting device.
However, when the LED lamp is applied in the field of education, blue light is generated when the LED device emits light, which can have adverse effects on the eyesight of children, so that the damage to the eyesight of the children when the LED lamp is used is not negligible. In the field of LED lamps, a blue light filtering mask is often added to filter out blue light, but this method usually directly removes blue light, which causes yellow color development of the light source, and also reduces light of other colors besides blue light reduction, thereby affecting the color development effect and the brightness of the illumination.
Therefore, how to ensure the lighting and color rendering effects and filter out blue light harmful to human eyes in the LED lamp is a technical problem to be solved in the prior art.
Disclosure of Invention
This patent is just based on prior art's above-mentioned demand and proposes, and the technical problem that this patent will be solved provides an eyeshield LED lamp appearance for classroom to keep sufficient color development effect in the blue light that is harmful to the human eye in the filtering LED light source.
In order to solve the technical problem, the technical scheme provided by the patent comprises:
an eye-protecting LED lamp for classrooms comprises a lampshade, an LED light-emitting chip and a blue light reduction device, wherein the blue light reduction device reduces blue light with the wavelength of 400-450nm and reduces yellow light complementary with the blue light with the wavelength.
And
an eye-protecting LED lamp for classrooms, comprising: an LED light emitting chip emitting white LED light according to current driving; the top and the closed lower part of the side surface of the lampshade are open openings, so that on one hand, the light of the LED lamp can be gathered to the lower part of the LED lampshade to be emitted; the eye-protecting LED lamp for the classroom also comprises a blue light reduction device; the blue light reduction device includes: a sleeve; the upper end and the lower end of the cylinder are open, and the side edges are closed; the upper surface of the sleeve is matched with the lower opening of the lampshade in shape, the outer wall of the sleeve is light-tight, the inner wall of the sleeve is white, and the sleeve is fixedly connected with the bottom of the lampshade of the LED lamp; a convex lens; the convex lens is transversely arranged at the upper end of the sleeve, the focus position at the upper end of the convex lens is the LED light-emitting chip, and light emitted from the LED light-emitting chip is converted into parallel white light to be emitted after passing through the convex lens; a prism assembly; the lower end of the convex lens is positioned at the middle part of the sleeve; the prism assembly comprises a transparent frame, and the transparent frame is matched with the shape of the sleeve; a plurality of through holes are formed in the frame, the through holes penetrate through the frame and are uniformly arranged, and the size of each through hole is the same; a prism group is arranged in the through hole, and a first prism and a second prism of the prism group are arranged in the through hole; the first triple prism receives the parallel white light from the convex lens and divides the light into a color band with various colors separated; the color band is formed on the upper surface of the second triangular prism after the first triangular prism splits light, a yellow color filter is arranged on the upper surface of the second triangular prism at a position corresponding to blue light in the color band, and a blue color filter is arranged on the upper surface of the second triangular prism at a position corresponding to complementary yellow light of the blue light in the color band; the second triangular prism converges the light in the color band into white light. The light-diffusing sheet is made of semitransparent materials and is positioned at the lower part of the sleeve to diffuse the light transmitted by the prism assembly into illuminating light in all directions.
Preferably, the blue light is blue light with a wavelength between 400 and 450 nm.
This patent is projected the light of different wavelengths to different positions through the beam split effect of prism, then subducts blue light and the complementary yellow light with the blue light simultaneously. Therefore, the eyesight is prevented from being damaged by blue light, the color balance of the light source can be kept, and the color rendering property of the light source is ensured.
Drawings
Fig. 1 is a structural diagram of an eye-protection LED lamp for a classroom according to the present embodiment.
Fig. 2 is a block diagram of a frame of a prism assembly.
Fig. 3 is a schematic diagram of the operation of the prism assembly.
Detailed Description
The following detailed description of the embodiments of the present patent application is provided for illustration only, and should not be construed to limit the scope of the present patent application.
As shown in fig. 1, the present embodiment provides an eye-protecting LED lamp for classroom use, the LED lamp including: LED chip 1, lamp shade 2 and blue light cut device.
In this embodiment, the LED chip and the lamp cover may be implemented by using a structure in the prior art. A typical structure is shown in fig. 1, and includes a light emitting chip 1 for emitting light for illumination driven by an electric current, and a lamp cover 2 generally serving as a structure for fixing an LED lamp and an illumination area for guiding light. The top and the side of lamp shade seal the lower part and be open opening, can on the one hand with the light of LED lamp gathers together the lower part of LED lamp shade jets out, and on the other hand is convenient for install the eyeshield structure. For most of lighting systems in the prior art, the lamp shade with the downward opening is the most common and the simplest possible, so that the application range of the eye-protecting blue light reduction device can be improved by adopting the lamp to perform corresponding eye-protecting color development modification in the specific implementation mode, namely for most of LED lamps for lighting in teaching, the eye-protecting blue light reduction device can be realized by only simply adding an eye-protecting structure, and therefore the implementation range of the invention is improved, and a convenient modification scheme is provided for the existing teaching classroom in which the LED lighting system is installed.
The LED lamps used for teaching illumination emit white light rays which are generally composed of various colors of light and comprehensively stimulate human eyes to form white light feeling, the white light generated by the LED chips generally has more blue light components and is partially blue on the whole, and optical fibers with wavelengths between 400 and 450nm in the blue light emitted by the LED lamps have great harm to the human eyes, and if the luminous flux of the part of the blue light is too large, the eyesight of children can be affected badly. Therefore, a process of reducing blue color of the LED lamp is required. As shown in fig. 1, in the present embodiment, a blue light reduction device is disposed at a lower opening of the LED lamp cover. The blue light reduction device comprises a sleeve 3, a convex lens 4, a prism assembly 5 and a light diffuser 6.
The blue light reduction device comprises a sleeve 3, the sleeve is made of metal or engineering plastics or other hard materials which are firmer, the outer wall of the sleeve is light-proof, and the inner wall of the sleeve can be white, so that light is prevented from being absorbed as much as possible. The sleeve is fixedly connected with the bottom of a lampshade of the LED lamp and arranged at an opening at the bottom of the lampshade. The connection mode can adopt gluing or multiple fixed modes such as fix with screw or thread tightening, the sleeve sets up the lower extreme opening part of LED lamp shade can be convenient for like this reform transform common LED lamp, does not influence the structure of current LED lamp simultaneously. The sleeve is in a cylindrical shape, the upper end and the lower end of the sleeve are opened, the side edges of the sleeve are closed, and the upper surface of the sleeve is matched with the lower opening of the lampshade in shape, so that tight connection and matching are facilitated.
The upper end of the sleeve is provided with a convex lens 4, and the focus position of the upper end of the convex lens is the LED light-emitting chip 1, so that light emitted from the LED light-emitting chip can be changed into parallel white light to be emitted when passing through the convex lens.
The lower extreme of convex lens is provided with prism subassembly 5, prism subassembly includes frame 51, the frame with the shape of sleeve matches, sets up inside being located of sleeve convex lens's below. The frame 51 is made of a transparent material, such as acryl, so as to transmit light as much as possible, and a plurality of through holes 52 are formed in the frame, arranged to penetrate through the frame, and each of the through holes has the same size and is uniformly disposed. The effect is shown in figure 2.
A prism group is arranged in the through hole, the prism group has a structure as shown in fig. 3, and includes two triangular prisms with opposite directions, the first triangular prism 53 receives the parallel light transmitted from the convex lens and splits the light, and since the white light composed of lights with different wavelengths can be split into colored lights with different colors after encountering the triangular prism, the white light emitted from the LED lamp can be split into different colors by using the triangular prisms in the reverse mode of the present embodiment, and a color band with various colors separated can be formed behind the triangular prism. In this embodiment, the first prism is used to split the light to separate the white light into color bands comprising a plurality of colors, thereby separating the colors of light in position. After the first triangular prism completes light splitting, light of a plurality of colors is emitted from the side surface of the first triangular prism at the lower part.
A second triple prism 54 is disposed at a lower portion of the through hole, and the second triple prism mixes the polychromatic light emitted from the first triple prism into white light by refraction. For this purpose, the second triangular prism is oriented after the first triangular prism is horizontally turned by 180 degrees. The first triangular prism divides white light into colors and emits polychromatic light to different positions on the upper surface of the second triangular prism respectively, in order to filter blue light, a yellow color filter 55 is arranged in an area where a blue color band is formed on the upper surface of the second triangular prism, and the yellow green filter can only pass yellow light or can prevent most of other color light except yellow from passing through, so that blue and yellow are complementary colors, and the yellow color filter is arranged at the position of the second triangular prism, so that the intensity of the blue light can be effectively reduced. However, since the LED light source emits white light, if the blue color band is simply weakened, the whole picture will be yellow, in this case, the yellow light complementary to the blue light in the white light needs to be simultaneously cut down, so that the color balance in the whole color can be maintained, and the whole picture will be white. In the present embodiment, the yellow color is cut by providing the blue filter 56 by forming a yellow color band region in the upper surface of the second triangular prism.
Furthermore, it has been found from research that blue light harmful to the human body is only blue light having a wavelength between 400 and 440nm, and therefore, in the present embodiment, a yellow filter is provided only at a band of blue light having a wavelength between 400 and 440nm, and a blue filter is provided in a corresponding complementary yellow band region of the blue light having a wavelength between 400 and 440 nm. Because the triple prism can accurately adjust the wavelength of the blue light to be filtered according to the requirements of different wavelength reduction. Meanwhile, because the yellow light which is complementary with the blue light with the wavelength is eliminated by the same amount, the color rendering property of the whole light source can be still kept, and the color rendering does not deviate.
In this embodiment, not all light emitted from the LED lamp is split, because the frame does not split in the non-through hole portion, and the light in the through hole only filters a small portion of blue light and yellow light complementary to the blue light. Therefore, the illumination brightness and color rendering of the LED lamp do not change significantly. The blue light is reduced to the Shanghai of human eyes, and meanwhile, the illumination brightness and the color development effect are not influenced.
The light emitted from the frame and the second triple prism is changed into light emitted to all directions after passing through the light-diffusing plate, so that illumination is facilitated.
Further preferably, since the distance between the LED light emitting chip and the bottom of the lampshade is different between different lamps, in this embodiment, the sleeve is provided with a convex lens adjusting and positioning unit. The structure is shown in fig. 1.
The convex lens adjusting and positioning unit comprises a plurality of evenly distributed collars 7, the collars extend from the inner wall of the sleeve to the center of the sleeve, and the collars incline upwards, so that the lens has enough stable supporting force for keeping the light path stable. The retainer ring is made of elastic material, such as silicon gel, and the convex lens is supported and held on the sleeve by the lower retainer ring in a natural state. When the position of the convex lens needs to be adjusted, the convex lens is only required to be pressed downwards, and therefore the clamping ring is squeezed to deform to enter the next gear. Conversely, if the lens is pressed upwards, a gear can be lifted upwards. The distance between each layer of collars is equal, so that the position of the convex lens can be prompted to be adjusted through pressing the collars due to extrusion, and the appropriate convex lens setting position can be selected according to the positions of different LED lamp chips.
The above are only preferred embodiments of the present patent, and all modifications, substitutions and deletions that are made under the inventive concept of the present patent should be included in the scope of protection of the present patent as well, as they do not depart from the technical concept of the present patent.
Claims (2)
1. An eye-protecting LED lamp for classrooms, comprising:
an LED light emitting chip emitting white LED light according to current driving;
the top and the closed lower part of the side surface of the lampshade are open openings, so that on one hand, the light of the LED lamp can be gathered to the lower part of the LED lampshade to be emitted;
it is characterized in that the preparation method is characterized in that,
the eye-protecting LED lamp for the classroom also comprises a blue light reduction device;
the blue light reduction device includes:
a sleeve; the upper end and the lower end of the cylinder are open, and the side edges are closed; the upper surface of the sleeve is matched with the lower opening of the lampshade in shape, the outer wall of the sleeve is light-tight, the inner wall of the sleeve is white, and the sleeve is fixedly connected with the bottom of the lampshade of the LED lamp;
a convex lens; the convex lens is transversely arranged at the upper end of the sleeve, the focus position at the upper end of the convex lens is the LED light-emitting chip, and light emitted from the LED light-emitting chip is converted into parallel white light to be emitted after passing through the convex lens;
a prism assembly; the lower end of the convex lens is positioned at the middle part of the sleeve; the prism assembly comprises a transparent frame, and the transparent frame is matched with the shape of the sleeve; a plurality of through holes are formed in the frame, the through holes penetrate through the frame and are uniformly arranged, and the size of each through hole is the same; a prism group is arranged in the through hole, and the prism group comprises a first triangular prism and a second triangular prism; the first triple prism receives the parallel white light from the convex lens and splits the light to form a color band with various colors separated; the color band is formed on the upper surface of the second triangular prism after the first triangular prism splits light, a yellow color filter is arranged on the upper surface of the second triangular prism at a position corresponding to blue light in the color band, and a blue color filter is arranged on the upper surface of the second triangular prism at a position corresponding to complementary yellow light of the blue light in the color band; the second prism converges the light in the color band into white light, and the light diffuser is made of semitransparent material and positioned at the lower part of the sleeve to diffuse the light transmitted by the prism assembly into illumination light in all directions.
2. The LED lamp for protecting eyes in classroom according to claim 1, wherein the blue light is blue light with a wavelength between 400 and 450 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417533.8A CN108777256B (en) | 2018-05-04 | 2018-05-04 | Eyeshield LED lamp for classroom |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810417533.8A CN108777256B (en) | 2018-05-04 | 2018-05-04 | Eyeshield LED lamp for classroom |
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| CN108777256A CN108777256A (en) | 2018-11-09 |
| CN108777256B true CN108777256B (en) | 2020-04-28 |
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| CN201810417533.8A Active CN108777256B (en) | 2018-05-04 | 2018-05-04 | Eyeshield LED lamp for classroom |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109946881A (en) * | 2019-04-19 | 2019-06-28 | 深圳市中深光电股份有限公司 | A kind of liquid crystal display die set of front light source |
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| CN104252094A (en) * | 2012-09-28 | 2014-12-31 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN106299091A (en) * | 2016-10-26 | 2017-01-04 | 厦门乾照照明有限公司 | A kind of structure reducing LED color skew and blue light harm |
| CN107924971A (en) * | 2015-09-02 | 2018-04-17 | 奥斯兰姆奥普托半导体有限责任公司 | Photoelectron subassembly and the method for manufacturing photoelectron subassembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2008103876A1 (en) * | 2007-02-22 | 2008-08-28 | Cree Led Lighting Solutions, Inc. | Lighting devices, methods of lighting, light filters and methods of filtering light |
| CN104638092A (en) * | 2015-01-27 | 2015-05-20 | 易美芯光（北京）科技有限公司 | LED (light emitting diode) encapsulation structure for reducing blue light damage |
| CN105892145B (en) * | 2016-04-05 | 2020-07-03 | 武汉华星光电技术有限公司 | Display and display module thereof |
| CN106019444B (en) * | 2016-05-25 | 2019-03-15 | 张家港康得新光电材料有限公司 | Yellow light absorbing structure and backlight module with it |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252094A (en) * | 2012-09-28 | 2014-12-31 | 深圳市绎立锐光科技开发有限公司 | Light source system and related projection system |
| CN107924971A (en) * | 2015-09-02 | 2018-04-17 | 奥斯兰姆奥普托半导体有限责任公司 | Photoelectron subassembly and the method for manufacturing photoelectron subassembly |
| CN106299091A (en) * | 2016-10-26 | 2017-01-04 | 厦门乾照照明有限公司 | A kind of structure reducing LED color skew and blue light harm |
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Address after: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Park Liuzhou Road two No. 591 1 floor Patentee after: Xiamen langxing Technology Co.,Ltd. Address before: 361000 Fujian province Xiamen torch hi tech Zone (Xiangan) Industrial Park Liuzhou Road two No. 591 1 floor Patentee before: XIAMEN LANGXING ENERGY SAVING LIGHTING Co.,Ltd. |
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Denomination of invention: Eye-protection LED lamp for classroom Effective date of registration: 20230214 Granted publication date: 20200428 Pledgee: Bank of China Limited Xiamen hi tech Park sub branch Pledgor: Xiamen langxing Technology Co.,Ltd. Registration number: Y2023980032527 |
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