Light guide plate structure for lamp and table lamp with same
By designing alternately arranged rice-grained microstructures and mirror-reflective structure light guide plates for lamps, the redundant and glare problems of lamp structures are solved, reasonable deflection and diffusion of light is achieved, illuminance and uniformity are improved, and it complies with national standards.
Patent Information
- Application Number
- CN202422283828.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-19
AI Technical Summary
In the anti-glare treatment of existing lamps, there is a problem of complex structure and affecting uniformity, and it is difficult to simultaneously improve luminous flux, uniformity and reduce glare feeling.
A light guide plate structure for lamps is designed, with the substrate equipped with alternating first and second grain-like microstructures, combined with the mirror reflective structure, to achieve reasonable deflection and diffusion of light, reduce glare feeling, and improve illuminance and uniformity.
Through alternately arranged rice-grained microstructures and mirror-reflective structures, reasonable deflection and diffusion of light is achieved, glare feeling is reduced, irradiation area is expanded, illumination and uniformity are improved, and uniformity is in line with the uniformity requirements of national standards.
Smart Images
Figure CN223137693U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lamps, and more specifically, it relates to a light guide plate structure for lamps and a table lamp having the same. Background Technique
[0002] In the field of indoor lighting, luminous flux, glare and uniformity are all very important indicators. Among them, the luminous flux can be simply processed by increasing the power or the number of lamp beads, etc., while glare and uniformity require adding structural components, combining an optical structure system or optimizing optical elements to achieve the desired purpose.
[0003] Currently, the common anti-glare treatment is to block the glare of the light source by adding structures such as a light shield and a light baffle, but this method will lead to a redundant structure of the lamp and will affect the light output angle and the uniformity of the lamp. Summary of the Utility Model
[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a light guide plate structure for lamps, which has the advantages of reducing the human eye's glare perception, expanding the irradiation area of the lamp, and improving the illuminance and uniformity.
[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: A light guide plate structure for lamps, including a substrate, the substrate has a light incident surface, a light output surface and a reflection surface, the light incident surface is located on one side of the substrate, the light output surface and the reflection surface are located on opposite sides of the substrate and intersect with the light incident surface;
[0006] A reflection structure is provided on the reflection surface, the reflection structure includes a plurality of first concave structures and a plurality of second concave structures, the plurality of first concave structures and the plurality of second concave structures are arranged alternately, the first concave structure includes a plurality of first rice grain-shaped microstructures arranged at intervals, and the second concave structure includes a plurality of second rice grain-shaped microstructures arranged at intervals;
[0007] Wherein, the length direction of the second rice grain-shaped microstructure intersects with the length direction of the first rice grain-shaped microstructure.
[0008] In one embodiment, one end of the first rice grain-shaped microstructure faces the light incident surface, and the length direction of the second rice grain-shaped microstructure is the same as the length direction of the substrate.
[0009] In one embodiment, the ends of two adjacent first rice grain-shaped microstructures are in contact with each other.
[0010] In one embodiment, a planar structure is further provided on the side of the reflection surface close to the light incident surface, and the reflection structure is provided on the side of the reflection surface away from the light incident surface.
[0011] In one embodiment, a plurality of lamp beads are arranged at intervals on the light incident surface.
[0012] In one embodiment, a mirror reflective structure is laid on the reflective surface.
[0013] In one embodiment, the mirror reflective structure is reflective paper.
[0014] In one embodiment, the substrate is an irregular quadrilateral.
[0015] A table lamp includes a lamp base and also includes the above-mentioned light guide plate structure for lamps.
[0016] In one embodiment, there are two light guide plate structures for lamps, and the two light guide plate structures for lamps are respectively arranged on both sides of the lamp base.
[0017] The above-mentioned light guide plate structure for lamps and the chandelier having the same have the following beneficial effects: By designing the micro-structure of the reflective surface of the substrate, the present utility model realizes reasonable polarization of incident light, scatters the incident light, expands the irradiation range, improves the illuminance and uniformity, and can reduce the glare feeling on the human eye, so that the human eye does not feel dazzling when directly looking at the light-emitting surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is the structural schematic diagram of this embodiment;
[0019] Figure 2 is Figure 1 the enlarged view at A in
[0020] Figure 3 is the cross-sectional structural schematic diagram of this embodiment;
[0021] Figure 4 is the position schematic diagram of the light guide plate structure for lamps in the table lamp of this embodiment;
[0022] Figure 5 is the light pattern schematic diagram of this embodiment;
[0023] Figure 6 is the uniformity test diagram of the table lamp in this embodiment.
[0024] In the figure: 1. Substrate; 11. Light incident surface; 12. Reflective surface; 121. Reflective structure; 1211. First rice grain-shaped micro-structure; 1212. Second rice grain-shaped micro-structure; 122. Plane structure; 2. Lamp bead. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The present utility model will be described in detail below with reference to the drawings and embodiments.
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, unless otherwise specifically and clearly defined.
[0028] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.
[0030] A light guide plate structure for a lamp, as Figure 1 and Figure 2 shown, includes a substrate 1. The substrate 1 has a light incident surface 11, a light exit surface, and a reflection surface 12. The light incident surface 11 is located on one side of the substrate 1, and the light exit surface and the reflection surface 12 are located on opposite sides of the substrate 1 and intersect with the light incident surface 11.
[0031] The reflective surface 12 is provided with a reflective structure 121. The reflective structure 121 includes a plurality of first concave structures and a plurality of second concave structures. The plurality of first concave structures and the plurality of second concave structures are arranged alternately. The first concave structure includes a plurality of first rice-grain-shaped microstructures 1211 arranged at intervals, and the second concave structure includes a plurality of second rice-grain-shaped microstructures 1212 arranged at intervals.
[0032] Wherein, the length direction of the second rice-grain-shaped microstructure 1212 intersects with the length direction of the first rice-grain-shaped microstructure 1211.
[0033] By designing the overlapping arrangement of the first rice-grain-shaped microstructures 1211 and the second rice-grain-shaped microstructures 1212, the reflective structure 121 of the reflective surface 12 is formed to realize the reasonable polarization of the incident light, and the incident light is scattered, expanding the illumination range while improving the illuminance and uniformity, and reducing the glare feeling on the human eye, so that the human eye does not feel dazzling when directly looking at the light-emitting surface.
[0034] Specifically, as Figure 1 and Figure 2 shown, one end of the first rice-grain-shaped microstructure 1211 faces the light-incident surface 11, and the length direction of the second rice-grain-shaped microstructure 1212 is the same as the length direction of the substrate 1.
[0035] Furthermore, as Figure 2 shown, the ends of two adjacent first rice-grain-shaped microstructures 1211 are abutted against each other. The plurality of first rice-grain-shaped microstructures 1211 in each first concave structure are connected end to end in sequence.
[0036] Specifically, as Figure 1 and Figure 3 shown, a planar structure 122 is further provided on the side of the reflective surface 12 close to the light-incident surface 11, and the reflective structure 121 is arranged on the side of the reflective surface 12 away from the light-incident surface 11. Moreover, a mirror reflective structure is laid on the reflective surface 12, and the mirror reflective structure is a reflective paper.
[0037] In this embodiment, the reflective paper completely covers the reflective surface 12 of the substrate 1, and the light enters the substrate 1 in the form of side light from the incident surface. When the light source emits light, part of the light passes through the planar structure 122 and irradiates to the reflective paper, and is reflected downward to the nearby working surface; another part of the light irradiates to the outer wall of the first rice-grain-shaped microstructure 1211 or the second rice-grain-shaped microstructure 1212, forming a deflection towards the distance. Since there are two different directions, the deflected light is also divided into two parts. In addition, in addition to the reflective paper, other mirror reflective structures with a reflective effect can also be used.
[0038] Specifically, as Figure 1As shown, a plurality of lamp beads 2 are arranged at intervals on the light incident surface 11. Using a plurality of lamp beads 2 as the light source has the advantages of reducing the occupied volume of the light source and uniform distribution.
[0039] Specifically, as Figure 1 shown, the substrate 1 is an irregular quadrilateral, which can be matched with different desk lamp product specifications.
[0040] A desk lamp includes a lamp base and also includes the above-mentioned light guide plate structure for lamps.
[0041] Furthermore, as Figure 4 shown, two light guide plate structures for lamps are provided. The two light guide plate structures for lamps are respectively arranged on both sides of the lamp base. In actual production, the two light guide plate structures for lamps are symmetrically arranged with respect to the lamp base.
[0042] As Figure 5 shown, the light guide plate structure for lamps in this embodiment is imported into the LightTools software for ray tracing. At the same time, in actual application, light guide plate structures for lamps are provided on both the left and right sides of the desk lamp, and their microstructures are in opposite directions. When in use, light will exit in four directions, greatly improving the illumination range of the desk lamp.
[0043] The desk lamp in this embodiment is tested for uniformity according to the national standard document GB / T 9473-2022 "Performance Requirements for Reading and Writing Task Desk Lamps". The test results are as Figure 6 shown, which are the illumination area and direction of the desk lamp. According to the provisions of GB / T 9473-2022 "Performance Requirements for Reading and Writing Task Desk Lamps": when the uniformity of the central area is less than or equal to 3, the minimum illuminance is greater than 500 lx, and the uniformity of the total area is less than or equal to 7, and the minimum illuminance is greater than 250 lx, it meets the national AA standard. The uniformity of the central area of the desk lamp in this embodiment is 1.53, and the uniformity of the total area is 2.62. The uniformity effect far exceeds the national standard.
[0044] The above-described embodiments only represent several implementation manners of the present utility model. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.
Claims
1. A light guide plate structure for a lamp, characterized in that: It includes a substrate which has a light incident surface, a light exit surface and a reflection surface. The light incident surface is located on one side of the substrate. The light exit surface and the reflection surface are located on opposite sides of the substrate and intersect with the light incident surface. A reflection structure is provided on the reflection surface. The reflection structure includes a plurality of first concave structures and a plurality of second concave structures. The plurality of first concave structures and the plurality of second concave structures are arranged alternately. The first concave structure includes a plurality of first rice grain-shaped microstructures arranged at intervals. The second concave structure includes a plurality of second rice grain-shaped microstructures arranged at intervals. Wherein, the length direction of the second rice grain-shaped microstructure intersects with the length direction of the first rice grain-shaped microstructure.
2. The light guide plate structure for a lamp according to claim 1, characterized in that: One end of the first rice grain-shaped microstructure faces the light incident surface, and the length direction of the second rice grain-shaped microstructure is the same as the length direction of the substrate.
3. The light guide plate structure for a lamp according to claim 2, characterized in that: The ends of two adjacent first rice grain-shaped microstructures are abutted against each other.
4. A light guide plate structure for a lamp according to claim 1, characterized in that: A planar structure is further provided on the side of the reflection surface close to the light incident surface, and the reflection structure is arranged on the side of the reflection surface away from the light incident surface.
5. The light guide plate structure for a lamp according to claim 1, characterized in that: A plurality of lamp beads are arranged at intervals on the light incident surface.
6. The light guide plate structure for a lamp according to claim 4, wherein: A mirror reflective structure is laid on the reflection surface.
7. The light guide plate structure for a lamp according to claim 6, characterized in that: The mirror reflective structure is a reflective paper.
8. A light guide plate structure for a lamp according to claim 1, characterized in that: The substrate is an irregular quadrilateral.
9. A table lamp, comprising a lamp base, characterized in that: It further includes the light guide plate structure for a lamp according to any one of claims 1-7.
10. A table lamp according to claim 9, characterized in that: There are two light guide plate structures for a lamp, and the two light guide plate structures for a lamp are respectively arranged on both sides of the lamp holder.