Light guide plate and emergency indicating lamp
By setting a diffused groove and forming a diffused layer on the light guide plate body, the problems of low production efficiency and easy information loss of traditional emergency indicator lights are solved, achieving efficient production and stable indication.
Patent Information
- Application Number
- CN202423150031.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Traditional emergency indicator lights display information on a light guide plate using film or screen printing, resulting in low production efficiency and susceptibility to environmental factors that cause them to detach, thus affecting their lifespan.
A diffused light groove is set on the light guide plate body, and a diffused light layer is formed by the side wall of the diffused light groove. The indicator information is displayed through the divergence and reflection of light, avoiding the film bonding or screen printing process, and forming an integrated diffused light indicator stripe.
It improved production efficiency, enhanced the stability of indicator information, and extended the service life of emergency indicator lights.
Smart Images
Figure CN223597931U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to emergency lighting technical field especially, it is emergency indicating lamp with light guide plate. BACKGROUND
[0002] Emergency indicating lamp can provide emergency lighting, and also has the important role of providing indication. Emergency indicating lamp is provided with an indication board or indication information, which is used for indicating the direction of emergency passage.
[0003] The indication information on the traditional emergency indicating lamp is pasted on the light guide plate by using a film or printed on the light guide plate by using silk printing. The light guide plate manufactured by the above method requires more raw materials or more process steps, which leads to difficult improvement of production efficiency. In addition, the film and silk printing method is easy to fall off due to environmental influence after long-term use, which affects the service life of the emergency indicating lamp. UTILITY MODEL CONTENT
[0004] Therefore, it is necessary to provide a light guide plate and an emergency indicating lamp.
[0005] A light guide plate comprises a light guide plate body and a light reflection layer.
[0006] One end of the light guide plate body is an incident end, and the incident end is used for facing a light source.
[0007] The light reflection layer is arranged on the end surface of the light guide plate body except the incident end.
[0008] The material of the light guide plate body is transparent, and a light diffusion indication stripe is arranged on the middle part of one surface of the light guide plate body. The light diffusion indication stripe comprises a plurality of light diffusion grooves arranged in parallel with each other. Each light diffusion groove is recessed on the surface of the light guide plate body, and each light diffusion groove is arranged in the direction perpendicular to the end surface of the incident end. The side wall of each light diffusion groove is formed with a first light diffusion layer.
[0009] In one embodiment, the two ends of each light diffusion groove are communicated respectively to form a light diffusion groove, and the side wall of the light diffusion groove is formed with a second light diffusion layer.
[0010] In one embodiment, the bottom of each light diffusion groove is formed with a third light diffusion layer.
[0011] In one embodiment, the cross-sectional shape of each light diffusion groove is rectangular.
[0012] In one embodiment, the width of each light diffusion groove is 0.2mm to 1mm.
[0013] In one embodiment, each light diffusion groove is formed by laser cutting.
[0014] In one of the embodiments, the light guide plate body is in a rectangular shape, and the incident end is a long side of the light guide plate body.
[0015] In one of the embodiments, two opposite corners of the light guide plate body away from the incident end are in a circular arc shape.
[0016] In one of the embodiments, the material of the light guide plate body is acrylic.
[0017] An emergency indicator lamp comprises a light source and the light guide plate according to any one of the above embodiments, and the light emitting direction of the light source is towards the incident end.
[0018] An emergency indicator lamp comprises a light source and the light guide plate according to any one of the above embodiments, and the light emitting direction of the light source is towards the incident end.
[0019] The light guide plate and the emergency indicator lamp have the advantages that the light diffusion grooves are arranged on one side of the light guide plate body, the first light diffusion layer of the side wall of the light diffusion grooves reflects the light diffusion, the light diffusion indication stripes emit light as a whole, and the indication information is reflected. Compared with the adhesive film or the silk printing, the process steps are effectively reduced, the production efficiency is improved, the light diffusion indication stripes will not fall off due to the environmental influence, and the service life of the emergency indicator lamp is effectively improved. BRIEF DESCRIPTION OF DRAWINGS
[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the light guide plate of an embodiment.
[0022] Figure 2A It is a schematic diagram of the three-dimensional structure of the light guide plate of an embodiment. Figure 1 It is a schematic diagram of the local enlarged structure at A in FIG.
[0023] Figure 2B It is a schematic diagram of the local enlarged structure at B in FIG. Figure 1 It is a schematic diagram of the local enlarged structure at B in FIG.
[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the emergency lighting lamp of an embodiment.
[0025] Explanation of reference signs:
[0026] 10, emergency indicator light; 100, light guide plate; 110, light guide plate body; 120, light reflection layer; 111, incident end; 130, light scattering indication stripe; 131, light scattering groove; 112, light scattering groove; 200, mounting shell; DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0028] As shown in FIG. 1, it is a light guide plate 100 according to an embodiment of the present application, comprising a light guide plate body 110 and a light reflection layer 120; one end of the light guide plate body 110 is an incident end 111, the incident end 111 is used for being directed to a light source; Figure 1 As shown in FIG. 2, it is a light guide plate 100 according to an embodiment of the present application, comprising a light guide plate body 110 and a light reflection layer 120; one end of the light guide plate body 110 is an incident end 111, the incident end 111 is used for being directed to a light source;
[0029] The light reflection layer 120 is arranged on the end face of the light guide plate body 110 except the incident end 111;
[0030] The material of the light guide plate body 110 is transparent material, the middle part of one face of the light guide plate body 110 is provided with a light scattering indication stripe 130, the light scattering indication stripe 130 comprises a plurality of light scattering grooves 131 arranged in parallel to each other, each light scattering groove 131 is recessed on the surface of the light guide plate body 110, and each light scattering groove 131 is arranged in the direction perpendicular to the end face of the incident end 111, and the sidewall of each light scattering groove is formed with a first light scattering layer.
[0031] In the embodiment, the material of the light guide plate body 110 is transparent material, i.e. the material of the light guide plate body 110 is made of light-transmitting material, so that the light guide plate body 110 can transmit light, thus the light of the light source can be incident to the inside of the light guide plate body 110 through the incident end 111. The light reflection layer 120 is made of non-light-transmitting material, and the light reflection layer 120 can reflect light. In one embodiment, the light reflection layer 120 is a light reflection film, which is formed on each end face of the light guide plate body 110 by coating. In one embodiment, the light reflection layer 120 is aluminum foil, and in one embodiment, the light reflection layer 120 is light reflection paper. In some other embodiments, the light reflection layer can be a frosted layer.
[0032] Specifically, the incident end 111 is positioned close to the light source, and the light emission direction of the light source is towards the incident end 111. Thus, the light emitted by the light source passes through the incident end 111 and enters the interior of the light guide plate body 110. Since reflective layers 120 are provided on all end faces of the light guide plate body 110 except for the incident end 111, the light can be reflected by the reflective layers 120, and the reflected light is concentrated towards the center of the light guide plate body 110. In this embodiment, a diffused light indicator stripe 130 is provided on one side of the light guide plate body 110, excluding the end faces where the reflective layers 120 are attached and the incident end 111. This side is the largest surface area on the light guide plate body 110. The sidewalls of the multiple diffused light grooves 131 of the diffused light indicator stripe 130 can reflect light and project it to the outside, thus giving the diffused light indicator stripe 130 a light-emitting effect and serving an indicator function. Figure 1 As shown, the diffused light grooves 131 are arranged to form the letter "EXIT". The diffused light indicator stripe 130 is "EXIT". When the light source emits light at the incident end 111 of the light guide plate 100, the diffused light indicator stripe 130 emits light to display "EXIT", which can serve as an indicator. It is worth mentioning that the order of the letters in "EXIT" in the figure is reversed. However, since the material of the light guide plate body 110 is transparent, the emission of the diffused light indicator stripe 130 can be seen from its back. In the rear view, the order of the letters in "EXIT" is restored to the normal letter order and writing angle.
[0033] It is worth mentioning that the diffused light indicator stripe 130 can be formed during the production process of the light guide plate body 110, for example, by integral injection molding during the injection molding process of the light guide plate body 110, or by cutting and polishing during the cutting process of the light guide plate body 110. In this embodiment, the diffused light groove 131 is first formed on the surface of the light guide plate body 110 by cutting, and then the sidewall of the diffused light groove 131 is polished to form a rough surface. This rough surface can be a frosted surface or a convex surface, and this rough surface serves as the first diffused light layer. In one embodiment, each diffused light groove 131 is formed by laser cutting. In this embodiment, laser cutting can also be called laser processing. During the laser cutting process, a rough surface will be formed on the sidewall of the diffused light groove 131. This rough surface can be a convex surface, which is a surface with several small protrusions on its surface. The rough surface formed by the above process can reflect light. It is worth mentioning that if the sidewall of the diffuser groove 131 is a smooth surface, the sidewall of the diffuser groove 131 is easily translucent and cannot form the effect of making the diffuser indicator stripe emit light. Therefore, by providing a first diffuser layer on the sidewall of the diffuser groove 131, the first diffuser layer can reflect light, and due to its non-smooth characteristics, it can scatter light from different directions, thereby producing a better visual luminescence (reflection) effect.
[0034] In the embodiment, the extension direction of each of the light dispersing grooves 131 is perpendicular to the incident end 111, so that the extension direction of each of the light dispersing grooves 131 is parallel to the incident direction of the light emitted by the light source, which is beneficial to the uniform diffusion of the light and makes the light emitting (reflecting) effect of the light dispersing stripe 130 better. In the embodiment, the light dispersing stripe 130 with the extension direction of the light dispersing grooves 131 perpendicular to the incident end 111 is called vertical stripe, and the light dispersing stripe 130 with the extension direction of the light dispersing grooves 131 parallel to the incident end 111 (perpendicular to the direction of the light) is called horizontal stripe. In actual application, the light emitting (reflecting) brightness of the horizontal stripe gradually decreases as the horizontal stripe is farther away from the light source, because the horizontal stripe blocks the propagation of the light to some extent, so that the light emitting is not uniform and the light emitting effect is not good. In the present application, the vertical stripe can guide the light along the propagation direction of the light and reflect the light along the direction perpendicular to the propagation direction of the light, which can avoid the blockage of the light, thereby avoiding the problem of the gradual decrease of the brightness caused by the horizontal stripe, and making the light emitting (reflecting) effect better.
[0035] Since the light dispersing stripe 130 can be formed on the surface of the light guide plate body 110 during the production of the light guide plate body 110, the subsequent steps of attaching the film or silk printing are avoided. Compared with the traditional method of attaching the film or silk printing, the method of setting the light dispersing stripe 130 on the surface of the light guide plate body 110 in the embodiment has fewer process steps and higher production efficiency. Moreover, since the light dispersing stripe 130 and the light guide plate body 110 are integrated, the light dispersing stripe 130 is more stable and difficult to be damaged.
[0036] In the above embodiment, the light dispersing groove is arranged on one side of the light guide plate body, the first light dispersing layer of the side wall of the light dispersing groove reflects the dispersion of the light, so that the light emitting of the light dispersing stripe as a whole is realized, and the indication information is reflected. Compared with the method of attaching the film or silk printing, the method of setting the light dispersing stripe on the surface of the light guide plate body effectively reduces the process steps, which is beneficial to improve the production efficiency. Moreover, the light dispersing stripe will not fall off due to the influence of the environment, and the service life of the emergency indication lamp is effectively improved.
[0037] In one embodiment, as shown in Figure 2A and Figure 2B the two ends of each of the light dispersing grooves 131 are communicated respectively to form a light dispersing groove 112, and the side wall of the light dispersing groove 112 is formed with a second light dispersing layer.
[0038] In the embodiment, the two ends of each of the astigmatic grooves 131 are not closed, and the recessed part extends to the outside of the astigmatic groove 131, so that the two ends of each of the astigmatic grooves 131 are communicated, thereby forming the astigmatic groove 112 in the shape of EXIT. In this way, since the side wall of the astigmatic groove 112 is formed with the second astigmatic layer, the side wall of the astigmatic groove 112 can also reflect light, and the profile of the EXIT formed by the overall reflection of the astigmatic indication stripe 130 is clearer.
[0039] In order to make the reflection effect better, in an embodiment, the bottom of each of the astigmatic grooves 131 is formed with a third astigmatic layer.
[0040] In the embodiment, the third astigmatic layer can also be formed on the bottom of the astigmatic groove 131 by polishing, laser cutting or the like. By forming the third astigmatic layer on the bottom of the astigmatic groove 131, the overall light emission (reflection) effect of the astigmatic indication stripe 130 is improved, the light emission intensity is higher, and the indication clarity is improved.
[0041] In an embodiment, as shown in Figure 2A and Figure 2B , the cross-sectional shape of each of the astigmatic grooves 131 is rectangular. In the embodiment, the cross-sectional shape of the astigmatic groove 131 is rectangular, so that the area of the first astigmatic layer of the side wall of the astigmatic groove 131 is larger, and the light emission (reflection) brightness of the astigmatic indication stripe 130 is larger, and the effect is better.
[0042] In other embodiments, the cross-sectional shape of each of the astigmatic grooves 131 is triangular, circular or polygonal.
[0043] In an embodiment, the width of each of the astigmatic grooves 131 is 0.2mm to 1mm. Preferably, the width of the astigmatic groove 131 is 0.25mm. In an embodiment, the spacing between each of the astigmatic grooves 131 is 0.2mm to 1mm, and preferably, the spacing between each of the astigmatic grooves 131 is 0.25mm. In this way, the light reflected by the reflection layer 120 can be uniformly distributed and emitted to the outside, so that the astigmatic indication stripe 130 as a whole presents a better light emission effect.
[0044] In an embodiment, as shown in Figure 2A and Figure 2B , the shape of the light guide plate body 110 is rectangular, and the incident end 111 is one long side of the light guide plate body 110. In the embodiment, one long side of the rectangular light guide plate body 110 is used as the incident end 111, so that the area of the incident end is effectively increased, and the light guide plate body 110 can be better supported.
[0045] In an embodiment, as shown inFigure 1 As shown, two opposite corners of the light guide plate body 110 far from the incident end 111 are provided in a circular arc shape. In this embodiment, the top of the light guide plate body 110 is the incident end 111, and the two opposite corners of the bottom of the light guide plate body 110 are provided in a circular arc shape. In this way, the two opposite corners in a circular arc shape can better reflect light, and the light is reflected to the light scattering indication stripes 130 in the middle, so that the light emission effect of the light scattering indication stripes 130 as a whole is better. In other embodiments, the two opposite corners of the light guide plate body 110 far from the incident end 111 are provided in a right angle shape.
[0046] In one embodiment, the material of the light guide plate body 110 is acrylic. In this embodiment, the acrylic light guide plate body 110 has the characteristics of light weight and high hardness, and the acrylic material is transparent and transmits light, which can well reflect light and form a better light emission effect.
[0047] In one embodiment, as shown in the drawings, Figure 3 As shown, an emergency indication lamp 10 is provided, which includes a light source (not shown in the drawings) and the light guide plate 100 described in any of the above embodiments, and the light emission direction of the light source is towards the incident end 111.
[0048] In this embodiment, the emergency indication lamp 10 further includes a mounting shell 200 for supporting elements such as the light source, the light plate, the transformer, etc., and the mounting shell 200 can be fixed on the ceiling or wall in the room by suspension, screwing, clamping, etc. The light source can be an incandescent lamp or an LED (Light-Emitting Diode Light) lamp. For example, the light source includes a light plate and an LED lamp bead arranged on the light plate, and the light emission direction of the LED lamp bead is towards the incident end 111 of the light guide plate body 110.
[0049] The light source is arranged in the mounting shell 200, the mounting shell 200 has a light outlet, the incident end 111 of the light guide plate body 110 is inserted into the light outlet and mounted in the light outlet, and the light emission direction of the light source is towards the incident end 111 of the light guide plate body 110. In this way, the light of the light source can be concentrated towards the incident end 111 of the light guide plate body 110.
[0050] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.
[0051] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.
Claims
1. A light guide plate, characterized in that, Includes the light guide plate body and the reflective layer; One end of the light guide plate body is the incident end, which is used to face the light source; The reflective layer is disposed on the end face of the light guide plate body other than the incident end; The light guide plate body is made of transparent material. A light diffusion indicator stripe is provided in the middle of one side of the light guide plate body. The light diffusion indicator stripe includes a plurality of light diffusion grooves arranged in parallel with each other. Each light diffusion groove is recessed on the surface of the light guide plate body and extends along the direction perpendicular to the end face of the incident end. A first light diffusion layer is formed on the sidewall of each light diffusion groove.
2. The light guide plate according to claim 1, characterized in that, The two ends of each of the aforementioned diffused grooves are connected to form a diffused groove, and a second diffused layer is formed on the sidewall of the diffused groove.
3. The light guide plate according to claim 1, characterized in that, A third scattering layer is formed at the bottom of each of the aforementioned scattering grooves.
4. The light guide plate according to claim 1, characterized in that, The cross-sectional shape of each of the aforementioned diffuser grooves is rectangular.
5. The light guide plate according to claim 1, characterized in that, The width of each of the aforementioned astigmatic grooves is 0.2 mm to 1 mm.
6. The light guide plate according to claim 5, characterized in that, Each of the aforementioned diffused grooves is formed by laser cutting.
7. The light guide plate according to claim 1, characterized in that, The light guide plate body is rectangular in shape, and the incident end is one of the long sides of the light guide plate body.
8. The light guide plate according to claim 7, characterized in that, The two opposite corners of the light guide plate body away from the incident end are set as arcs.
9. The light guide plate according to any one of claims 1-8, characterized in that, The light guide plate body is made of acrylic.
10. An emergency indicator light, comprising a light source, characterized in that, It also includes the light guide plate as described in any one of claims 1-9, wherein the light emission direction of the light source is toward the incident end.