Backlight lamp bead
By setting a bottom of the groove that is consistent with the size of the luminescent chip in the installation groove of the backlight bead, the area of the phosphor layer is reduced, and the problem of yellowing of the visual effect when the backlight bead is equipped with a lens is solved, and the light effect is improved.
Patent Information
- Application Number
- CN202420383324.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-29
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-02-28
AI Technical Summary
Existing backlight beads are prone to yellowing of visual effects when fitting with lenses, resulting in poor lighting effects.
By the size of the luminescent chip at the bottom of the mounting groove, the area of the phosphor layer is reduced, thereby reducing the phenomenon of yellowing of the visual effect caused by the phosphor layer.
It effectively reduces the yellowing of the visual effect caused by the phosphor layer and improves the light effect of the backlight beads.
Smart Images
Figure CN222692245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight, in particular to a backlight lamp bead. Background Art
[0002] At present, all walks of life are under pressure to reduce costs to varying degrees. In the backlight industry, especially TV backlight, in order to achieve cost reduction, the power of a single lamp bead has been increased to reduce the number of overall lens lamp beads. The increase in the power of a single lamp bead will inevitably require an increase in the solubility ratio of the phosphor on the lamp bead. The proportion of the yellow powder in the phosphor increases significantly, which leads to a yellowish color on the periphery of the light-emitting chip when the lamp bead is lit, and yellow spots appear when the backlight is equipped with a lens, resulting in poor lighting efficiency. Summary of the invention
[0003] The utility model aims to provide a backlight lamp bead to solve the problem of yellowing visual effect of the existing backlight lamp bead equipped with a lens.
[0004] The utility model provides a backlight lamp bead, comprising a bracket, a light-emitting chip arranged in the middle of the bracket, and a lens arranged at the upper end of the bracket, a mounting groove is arranged at a position corresponding to the light-emitting chip, the light-emitting chip is arranged at the bottom of the mounting groove, the side of the mounting groove is plated with a fluorescent powder layer, the mounting groove is in an inverted trapezoidal shape, and the bottom of the mounting groove is the same size as the light-emitting chip.
[0005] The backlight lamp bead reduces the area of the phosphor layer by setting the bottom of the mounting groove to be consistent with the size of the light-emitting chip, thereby reducing the visual phenomenon of yellowing caused by the fluorescence at the bottom of the mounting groove.
[0006] Furthermore, the lens is any one of a refractive lens and a reflective lens.
[0007] Furthermore, the refractive lens includes a first refractive portion disposed at the upper end of the bracket and an arc-shaped light-scattering portion disposed at the upper end of the first refractive portion, and a first refractive cavity is disposed at a position of the first refractive portion corresponding to the light-emitting chip.
[0008] Furthermore, a plurality of first supporting portions are provided at the lower end of the first refraction portion.
[0009] Furthermore, the reflective lens includes a second refractive portion arranged at the upper end of the bracket and a reflecting portion arranged on the upper side of the second refractive portion, the reflecting portion is in an inverted cone shape, and the middle part of the reflecting portion is opposite to the center position of the light-emitting chip, and a second refractive cavity is provided at the position of the second refractive portion corresponding to the light-emitting chip.
[0010] Furthermore, a plurality of second supporting portions are provided at the lower end of the second refractive portion.
[0011] Furthermore, a top of the second refractive cavity protrudes downward into an arc structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic cross-sectional structure diagram of the backlight lamp bead in the first embodiment of the utility model;
[0013] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the bracket and the light-emitting chip in the backlight lamp bead;
[0014] Figure 3 for Figure 2 A top view of the bracket and the light-emitting chip;
[0015] Figure 4 It is a schematic cross-sectional structure diagram of a backlight lamp bead in the second embodiment of the utility model;
[0016] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the bracket and the light-emitting chip in the backlight lamp bead;
[0017] Figure 6 for Figure 5 A top view of the bracket and light-emitting chip.
[0018] Description of main component symbols:
[0019] Bracket 10 The first refractive portion 31 31 Second refraction part 41 Mounting slot 11 First refractive cavity 311 Second refractive cavity 411 Phosphor layer 12 Curved astigmatism 32 Reflection 42 Light-emitting chip 20 First support part 33 Second support part 43 Refractive lens 30 Reflective lens 40
[0020] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively with reference to the relevant drawings. Several embodiments of the utility model are given in the drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0024] See also Figures 1 to 4 A backlight lamp bead provided by an embodiment of the utility model includes a bracket 10, a light-emitting chip 20 arranged in the middle of the bracket 10, and a lens arranged at the upper end of the bracket 10. A mounting groove 11 is provided at a position corresponding to the bracket 10 and the light-emitting chip 20. The light-emitting chip 20 is arranged at the bottom of the mounting groove 11. The side of the mounting groove 11 is plated with a phosphor layer 12. The mounting groove 11 is in an inverted trapezoidal shape, and the bottom of the mounting groove 11 is the same size as the light-emitting chip 20.
[0025] The backlight lamp bead reduces the area of the phosphor layer by setting the bottom of the mounting groove 11 to be consistent with the size of the light-emitting chip 20, thereby reducing the visual phenomenon of yellowing caused by the fluorescence at the bottom of the mounting groove 11.
[0026] In one embodiment of the present invention, the lens is any one of a refractive lens 30 and a reflective lens 40 to achieve different light emitting modes.
[0027] In one embodiment of the utility model, the refractive lens 30 includes a first refractive portion 31 disposed at the upper end of the bracket 10 and an arc-shaped light-scattering portion 32 disposed at the upper end of the first refractive portion 31, and a first refractive cavity 311 is disposed at a position corresponding to the light-emitting chip 20 of the first refractive portion 31. During operation, the light emitted by the light-emitting chip 20 enters the first refractive portion 31 from the first refractive cavity 311, and after being refracted by the first refractive portion 31, it is diffused through the arc-shaped light-scattering portion 32, thereby realizing light emission over a large area.
[0028] In one embodiment of the present invention, a plurality of first supporting portions 33 are further provided at the lower end of the first refractive portion 31. During installation, the plurality of first supporting portions 33 are supported at the installation position to prevent the weight of the refractive lens 30 from being entirely applied to the bracket 10, and at the same time, the supporting area of the refractive lens 30 is increased, thereby improving the installation stability of the refractive lens 30.
[0029] In one embodiment of the utility model, the reflective lens 40 includes a second refractive portion 41 disposed at the upper end of the bracket 10 and a reflective portion 42 disposed on the upper side of the second refractive portion 41, the reflective portion 52 is in an inverted cone shape, and the middle of the reflective portion 42 is directly opposite to the center position of the light emitting chip 20, and a second refractive cavity 411 is disposed at a position corresponding to the light emitting chip 20 of the second refractive portion 41. During operation, the light emitted by the light emitting chip 20 enters the second refractive portion 41 from the second refractive cavity 411, and is refracted toward the reflective portion 42 by the second refractive portion 41, so as to improve the uniform reflection of the light by the reflective portion 42, thereby realizing a wide range of illumination.
[0030] In one embodiment of the utility model, a plurality of second supporting portions 43 are provided at the lower end of the second refractive portion 41. During installation, the plurality of second supporting portions 43 are supported at the installation position to prevent the weight of the reflective lens 40 from being entirely applied to the bracket 10, and at the same time, the support area of the reflective lens 40 is increased, thereby improving the installation stability of the reflective lens 40.
[0031] In an embodiment of the present invention, the top of the second refractive cavity 411 is convex downwardly into an arc structure, so that the light of the second refractive portion 41 is concentrated toward the reflective portion 42, thereby improving the luminous efficiency.
[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A backlight lamp bead, characterized in that: It includes a bracket, a light-emitting chip arranged in the middle of the bracket, and a lens arranged at the upper end of the bracket. The bracket is provided with a mounting groove at a position corresponding to the light-emitting chip. The light-emitting chip is arranged at the bottom of the mounting groove. The side of the mounting groove is plated with a fluorescent powder layer. The mounting groove is in an inverted trapezoidal shape, and the bottom of the mounting groove is the same size as the light-emitting chip.
2. The backlight lamp bead according to claim 1, characterized in that: The lens is either a refractive lens or a reflective lens.
3. The backlight lamp bead according to claim 2, characterized in that: The refractive lens comprises a first refractive portion arranged at the upper end of the bracket and an arc-shaped light-scattering portion arranged at the upper end of the first refractive portion. A first refractive cavity is arranged at a position of the first refractive portion corresponding to the light-emitting chip.
4. The backlight lamp bead according to claim 3, characterized in that: A plurality of first supporting parts are further disposed at the lower end of the first refraction part.
5. The backlight lamp bead according to claim 2, characterized in that: The reflective lens includes a second refractive portion arranged at the upper end of the bracket and a reflective portion arranged on the upper side of the second refractive portion, the reflective portion is in an inverted cone shape, and the middle of the reflective portion is opposite to the center position of the light-emitting chip, and a second refractive cavity is provided at a position of the second refractive portion corresponding to the light-emitting chip.
6. The backlight lamp bead according to claim 5, characterized in that: A plurality of second supporting parts are disposed at the lower end of the second refraction part.
7. The backlight lamp bead according to claim 5, characterized in that: The top of the second refractive cavity protrudes downward into an arc structure.