Low-glare linear lamp

Abstract

The utility model relates to a low-glare linear lamp which comprises a shell, two opposite inner walls of an opening of the shell are respectively provided with a lower slot, two side edges of the opening of the shell are respectively provided with a positioning step, the opening of the shell is provided with an integrated lampshade, and two edges of the integrated lampshade along the length direction are respectively matched with the two positioning steps. Inserting strips are arranged on the edges of the two sides of the top wall of the integrated lampshade and matched with the lower inserting grooves in an inserted mode, the bottom layer of the integrated lampshade is a transparent material layer, the top layer of the integrated lampshade is a frosted material layer, the transparent material layer and the frosted material layer are integrally formed in an extrusion mode, and a plurality of tetrahedral pits are evenly formed in the bottom wall of the transparent material layer. And the plurality of tetrahedral pits are arranged in a rectangular array. According to the utility model, glare can be reduced, and the material and construction cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, specifically to a high-efficiency, low-glare lighting fixture. Background Technology

[0002] Linear lighting fixtures are increasingly used in indoor office environments. Compared to downlights, linear lights have a larger luminous area and softer light. However, linear lights generally do not have the 30-degree or larger shielding angle of downlights. Therefore, when the brightness of the luminous surface is high, glare is easily generated, causing discomfort to the eyes of people working in this environment. To control the glare problem of linear lights, manufacturers generally use double-layer lampshades or single-layer lampshades with anti-glare optical films to reduce glare.

[0003] Figure 1 The diagram shows the structure of a double-layer lampshade, with an inner layer being a milky white diffuser and an outer layer being a transparent cover. Due to unavoidable dimensional errors during processing, if the width of the inner cover is too large, it will enlarge the opening of the shell, making the outer cover unstable to install. Similarly, if the width of the outer cover is too large, it will also enlarge the opening of the shell, making the inner cover unstable to install, thus affecting product quality.

[0004] Figure 2 The diagram shows a structure combining a single-layer transparent cover and an anti-glare optical film. This structure is formed by attaching the anti-glare optical film to the top wall of the transparent cover. The size of the anti-glare optical film must precisely correspond to the transparent cover to ensure complete coverage. If the anti-glare optical film fails to completely cover the transparent cover due to dimensional errors, light will leak through the partially covered areas, resulting in uneven light distribution.

[0005] In addition, both of the above methods will significantly increase material and construction costs. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency, low-glare lamp that can reduce glare and has lower material and construction costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A low-glare optical luminaire includes a housing. The housing has two opposing inner walls with lower slots, and two positioning steps on the edges of the opening. An integrated lampshade is located at the opening, with its two edges along its length engaging with the two positioning steps. Inserts are located on the two edges of the top wall of the integrated lampshade, engaging with the lower slots. The bottom layer of the integrated lampshade is a transparent material layer, and the top layer is a frosted material layer. The transparent and frosted material layers are integrally extruded. The bottom wall of the transparent material layer has a plurality of tetrahedral recesses evenly distributed in a rectangular array. The opening edge length of each tetrahedral recess is 0.6mm-2.0mm, the angle between the inner wall of the tetrahedral recess and the top wall of the integrated lampshade is 47°-51°, and the distance between the edges of two adjacent tetrahedral recesses is less than 0.3mm.

[0009] Specifically, the tetrahedral pit is square in shape, and the opening edge length of the tetrahedral pit is 1.7mm-1.9mm.

[0010] Specifically, the tetrahedral recess is rectangular in shape, and the opening edge of the tetrahedral recess is divided into a long side and a short side. The length of the long side is 0.9mm-1.1mm, and the length of the short side is 0.7mm-0.9mm. The short sides of two adjacent tetrahedral recesses are collinear, and the length direction of the short side is consistent with the length direction of the lampshade.

[0011] Specifically, an aluminum substrate is provided in the middle of the inner cavity of the housing. An LED light strip is fixed to the bottom wall of the aluminum substrate. Two upper slots are provided on the bottom wall of the aluminum substrate. Two middle slots are provided on the two inner walls at the opening of the housing. A reflector is inserted into the upper slot and the middle slot on the same side. The reflector is tilted outward from top to bottom.

[0012] Specifically, the angle between the reflector and the top wall of the integrated lampshade is 60°-63°.

[0013] Specifically, the insert is arranged vertically, and the top edge of the insert has an outward protruding ridge. The cross-sectional profile of the ridge is V-shaped. The lower side wall of the lower slot is inclined downward, and the lower side wall of the lower slot contacts and engages with the lower side wall of the ridge.

[0014] Specifically, the slot opening of the upper slot slopes outward from top to bottom, while the inner wall of the middle slot slopes inward from bottom to top.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] See Figure 5The bottom layer of the integrated lampshade 2 is a transparent material layer 201, and the top layer is a frosted material layer 202. The transparent material layer 201 and the frosted material layer 202 are integrally extruded—the frosted material and the transparent material are integrally extruded through an extrusion mold. The material cost and installation cost of this molding method are lower than the two methods in the existing technology. After the frosted material and the transparent material are integrally extruded, the optical texture of the tetrahedral recesses 22 is rolled onto the bottom wall of the transparent material layer 201 through an embossing mold (e.g., ...). Figure 6 Finally, after being shaped by a mold and cooled by a cooling system, the light transmittance (T) of the final integrated lampshade 2 can reach 70-78%.

[0017] The top layer of the integrated lampshade 2 of this utility model is a frosted material layer 202. The frosted material layer 202 has a certain diffusion effect and good light transmittance and transparency, which can play a role in light mixing. By mixing the uneven light from the light source, it can avoid the grainy feeling and ensure high light transmittance. Through mold design, the frosted material is combined with the transparent material with a uniform thickness, thereby ensuring that the dimensions of the frosted material layer 202 after molding are strictly consistent with the transparent material layer 201, avoiding uneven light due to incomplete coverage by the frosted material layer.

[0018] Research shows that glare from lamps is generally due to the high proportion of wide-angle light rays; therefore, suppressing the proportion of wide-angle light rays can significantly reduce glare. The bottom wall of the transparent material layer 201 has a tetrahedral recessed optical texture 22. This optical texture can control the beam angle of light after passing through the integrated lampshade 2, suppressing wide-angle light emission and thus reducing glare. The optical angle controlled by the integrated lampshade 2 can be maintained between 70-90 degrees. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the structure of a double-layer lampshade in the existing technology;

[0021] Figure 2 This is a structure combining a single-layer transparent cover with an anti-glare optical film, as is common in existing technologies.

[0022] Figure 3 This is an external view of the present invention;

[0023] Figure 4 This is an internal view of the present invention;

[0024] Figure 5 for Figure 4 A partial view;

[0025] Figure 6 This is a partial view of the integrated lampshade in Embodiment 1;

[0026] Figure 7 This is a partial view of the integrated lampshade in Embodiment 2;

[0027] Figure 8 This is a schematic diagram of the light ray trajectory in Example 1;

[0028] Figure 9 This is the light distribution curve for Example 1;

[0029] Figure 10 The beam angle simulation results are for Example 1;

[0030] Figure 11 The illuminance distribution on the surface of the lampshade in Example 1 is shown.

[0031] In the picture:

[0032] 1. Housing; 11. Lower slot; 12. Positioning step; 13. Aluminum substrate; 131. Upper slot; 14. LED light strip; 15. Middle slot;

[0033] 2. Integrated lampshade; 201. Transparent material layer; 202. Frosted material layer; 21. Insert strip; 211. Raised strip; 22. Tetrahedral recess;

[0034] 3. Reflector. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0036] Example 1

[0037] See Figures 3 to 5 A low-glare light fixture includes a housing 1, with lower slots 11 on both opposite inner walls of the opening of the housing 1. Positioning steps 12 are provided on both sides of the opening of the housing 1. An integrated lampshade 2 is provided at the opening of the housing 1, with its two edges along its length respectively engaging with the two positioning steps 12. Inserts 21 are provided on both sides of the top wall of the integrated lampshade 2, and the inserts 21 engage with the lower slots 11.

[0038] See Figure 5The bottom layer of the integrated lampshade 2 is a transparent material layer 201, and the top layer of the integrated lampshade 2 is a frosted material layer 202. The transparent material layer 201 and the frosted material layer 202 are integrally extruded. (Reference) Figure 6 The bottom wall of the transparent material layer 201 is uniformly provided with multiple tetrahedral recesses 22, which are arranged in a rectangular array. The opening edge length of the tetrahedral recesses 22 is 0.6mm-2.0mm, the included angle between the inner wall of the tetrahedral recesses 22 and the top wall of the integrated lampshade 2 is 47°-51°, and the edge distance between two adjacent tetrahedral recesses 22 is less than 0.3mm.

[0039] Specifically, see Figure 6 The tetrahedral pit 22 is square in shape, and the opening edge length of the tetrahedral pit 22 is 1.7mm-1.9mm.

[0040] Specifically, see Figure 5 An aluminum substrate 13 is provided in the middle of the inner cavity of the housing 1, and an LED light strip 14 is fixed to the bottom wall of the aluminum substrate 13. The bottom wall of the aluminum substrate 13 is provided with two upper slots 131, and the two inner walls at the opening of the housing 1 are respectively provided with middle slots 15. The upper slots 131 and the middle slots 15 on the same side are connected to a reflector 3, which is inclined outward from top to bottom.

[0041] Specifically, the angle between the reflector 3 and the top wall of the integrated lampshade 2 is 60°-63°.

[0042] Specifically, see Figure 5 The insert 21 is arranged vertically, and the top edge of the insert 21 has an outwardly protruding ridge 211, the cross-sectional profile of which is V-shaped. The lower side wall of the lower slot 11 is inclined downward, and the lower side wall of the lower slot 11 contacts and engages with the lower side wall of the ridge 211.

[0043] Specifically, see Figure 5 The slot opening of the upper slot 131 is tilted outward from top to bottom, and the inner wall of the middle slot 15 is tilted inward from bottom to top.

[0044] The working principle of this utility model is as follows:

[0045] See Figure 5 The bottom layer of the integrated lampshade 2 is a transparent material layer 201, and the top layer is a frosted material layer 202. The transparent material layer 201 and the frosted material layer 202 are integrally extruded—the frosted material and the transparent material are integrally extruded through an extrusion mold. The material cost and installation cost of this molding method are lower than the two methods in the existing technology. After the frosted material and the transparent material are integrally extruded, the optical texture of the tetrahedral recesses 22 is rolled onto the bottom wall of the transparent material layer 201 through an embossing mold (e.g., ...). Figure 6Finally, after being shaped by a mold and cooled by a cooling system, the light transmittance (T) of the final integrated lampshade 2 can reach 70-78%.

[0046] The top layer of the integrated lampshade 2 of this utility model is a frosted material layer 202. The frosted material layer 202 has a certain diffusion effect and good light transmittance and transparency, which can play a role in light mixing. By mixing the uneven light from the light source, it can avoid the grainy feeling and ensure high light transmittance. Through mold design, the frosted material is combined with the transparent material with a uniform thickness, thereby ensuring that the dimensions of the frosted material layer 202 after molding are strictly consistent with the transparent material layer 201, avoiding uneven light due to incomplete coverage by the frosted material layer.

[0047] Research shows that glare from lamps is generally due to the high proportion of wide-angle light rays; therefore, suppressing the proportion of wide-angle light rays can significantly reduce glare. The bottom wall of the transparent material layer 201 has a tetrahedral recessed optical texture 22. This optical texture can control the beam angle of the light after passing through the integrated lampshade 2, suppressing wide-angle light emission and thus reducing glare. The optical angle controlled by the integrated lampshade 2 can be controlled between 70-90 degrees, as illustrated in the schematic diagram of the light emission path. Figure 8 As shown, its light distribution curve is as follows: Figure 9 As shown. The corresponding simulated beam angle is approximately 64°, as... Figure 10 As shown. The illuminance distribution on the lampshade surface is as follows. Figure 11 As shown.

[0048] Example 2

[0049] See Figure 7 The structural difference between Embodiment 2 and Embodiment 1 is that the tetrahedral recess 22 is rectangular, and the opening edge of the tetrahedral recess 22 is divided into a long side and a short side. The length of the long side is 0.9mm-1.1mm, and the length of the short side is 0.7mm-0.9mm. The short sides of two adjacent tetrahedral recesses 22 are collinear, and the length direction of the short side is consistent with the length direction of the lampshade. The structure of Embodiment 2 can also control glare.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A low-glare linear luminaire, characterized by: The device includes a housing. The two opposite inner walls of the housing opening have lower slots. Positioning steps are provided on both sides of the housing opening. An integrated lampshade is located at the housing opening. The two edges of the integrated lampshade along its length respectively mate with the two positioning steps. Inserts are provided on both sides of the top wall of the integrated lampshade, and these inserts engage with the lower slots. The bottom layer of the integrated lampshade is a transparent material layer, and the top layer is a frosted material layer. The transparent and frosted material layers are integrally extruded. The bottom wall of the transparent material layer has multiple tetrahedral recesses evenly distributed in a rectangular array. The opening edge length of each tetrahedral recess is 0.6mm-2.0mm. The angle between the inner wall of the tetrahedral recess and the top wall of the integrated lampshade is 47°-51°. The distance between the edges of two adjacent tetrahedral recesses is less than 0.3mm.

2. The low-glare linear luminaire of claim 1, wherein: The tetrahedral pit is square in shape, and the opening edge length of the tetrahedral pit is 1.7mm-1.9mm.

3. The low-glare linear luminaire of claim 1, wherein: The tetrahedral recess is rectangular in shape. The opening edge of the tetrahedral recess is divided into a long side and a short side. The length of the long side is 0.9mm-1.1mm, and the length of the short side is 0.7mm-0.9mm. The short sides of two adjacent tetrahedral recesses are collinear, and the length direction of the short side is consistent with the length direction of the lampshade.

4. The low-glare linear luminaire of claim 1, wherein: An aluminum substrate is provided in the middle of the inner cavity of the housing. An LED light strip is fixed to the bottom wall of the aluminum substrate. Two upper slots are provided on the bottom wall of the aluminum substrate. Two middle slots are provided on the two inner walls at the opening of the housing. A reflector is inserted into the upper slot and the middle slot on the same side. The reflector is tilted outward from top to bottom.

5. The low-glare linear luminaire according to claim 4, characterized in that: The angle between the reflector and the top wall of the integrated lampshade is 60°-63°.

6. The low-glare linear luminaire of claim 1, wherein: The insert is set vertically, and the top edge of the insert has an outward protruding ridge. The cross-sectional profile of the ridge is V-shaped. The lower side wall of the lower slot is set inclined downward, and the lower side wall of the lower slot contacts and engages with the lower side wall of the ridge.

7. The low-glare linear luminaire of claim 4, wherein: The upper slot's opening slopes outward from top to bottom, while the middle slot's inner wall slopes inward from bottom to top.

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