Low-cost fire emergency sign lamp with high waterproof performance

Abstract

The utility model discloses a low -cost fire emergency sign lamp with high waterproof performance has, including backplate and face cover, set up the light guide plate main part between backplate and face cover, is provided with light source module on the light guide plate main part, and the side surface top of light guide plate main part is provided with the rectangular mounting recess groove, the sidewall of rectangular mounting recess groove is provided with the optical guide inclined plane, light source module sets up in the rectangular mounting recess groove, and the rectangular mounting recess groove has filled in the light -transmitting epoxy resin sealing layer for wrapping light source module and forming integrated structure, the utility model discloses the structure setting is reasonable, and light source module sets up in the rectangular mounting recess groove, and is sealed through the light -transmitting epoxy resin sealing layer, is favorable to promote the prevention performance, and the overall structure component is few, is favorable to reduce the assembly process, promotes assembly efficiency, has reduced the production and processing cost, and also can guarantee the light -transmitting efficiency through the light -transmitting epoxy resin sealing layer, and supports the modularization replacement, has improved the sealed waterproofness and dismounting convenience.

Description

Technical Field

[0001] This utility model belongs to the field of emergency sign light technology, specifically relating to a low-cost fire emergency sign light with high waterproof performance. Background Technology

[0002] Fire emergency lights are a common type of lighting fixture used for emergency indication. They have a wide range of applications and operate in complex environments. They typically consist of a housing, a limiting ring, and a light source strip, with a light guide plate inside the housing (e.g., CN202323589375.X). While these lights can meet general usage requirements, the light source strip is mainly attached to the top of the light guide plate using adhesive or screws. Although they can provide emergency indication, the current technology employs a multi-layered protective cover structure, which not only complicates the assembly process but also makes the junction between the light source module and the light guide plate prone to water seepage. To improve waterproofing, sealing rings and other components are needed, significantly increasing costs. Disassembly and replacement costs are also high, resulting in very limited waterproofing performance. Therefore, their applicability is restricted, making it difficult to meet market demands. Utility Model Content

[0003] The purpose of this utility model is to provide a low-cost fire emergency sign light fixture with a reasonable structure and strong waterproof performance.

[0004] The technical solution to achieve the purpose of this utility model is a low-cost fire emergency sign light with high waterproof performance, including a back plate and a front cover, a light guide plate body disposed between the back plate and the front cover, a light source module disposed on the light guide plate body, and a rectangular mounting groove opened on the top side of the light guide plate body.

[0005] The sidewall of the rectangular mounting groove is provided with an optical guiding slope;

[0006] The light source module is disposed in the rectangular mounting groove, and the rectangular mounting groove is filled with a light-transmitting epoxy resin sealing layer for wrapping the light source module and forming an integrated structure.

[0007] A further preferred embodiment is that the edge of the light guide plate body is provided with a continuous flange structure, and the inner wall of the cover is provided with a stepped groove.

[0008] The light guide plate body is located inside the cover, and the continuous flange structure fits into the stepped groove on the cover to form a labyrinth-like sealed channel.

[0009] A further preferred embodiment is that a silicone grease filling layer is provided at the connection between the continuous flange structure and the stepped groove.

[0010] A further preferred embodiment is that the inclination angle of the optical guiding slope is 45°.

[0011] A further preferred embodiment is that the main body of the light guide plate is a PMMA material light guide plate with a thickness of 3-5mm;

[0012] The depth of the rectangular mounting groove is 2-3mm.

[0013] A further preferred embodiment is that the height of the continuous flange structure is 0.8 mm.

[0014] A further preferred embodiment is that the cover is a PC panel with a thickness of 1.5mm, and the back plate and the cover are fixed by ultrasonic welding.

[0015] A further preferred embodiment is that the thickness of the light-transmitting epoxy resin sealing layer is 0.5 mm, and the thickness of the light source module is 1.2 mm.

[0016] This utility model has the following positive effects: Its structure is rationally designed, with a rectangular mounting groove on the light guide plate body. The light source module is placed within this groove and sealed with a light-transmitting epoxy resin sealing layer, which improves waterproof performance and achieves an IP68 waterproof rating. Furthermore, its overall structure has fewer components, reducing assembly steps, thus improving assembly efficiency and lowering production costs. The light-transmitting epoxy resin sealing layer also ensures light transmission efficiency and supports modular replacement, enhancing sealing, waterproofing, and ease of assembly and disassembly, making it highly adaptable. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural diagram of the light guide plate body and the light source module in this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the connection between the light guide plate body and the light source module in this utility model;

[0021] Figure 4 This is a partially enlarged schematic diagram of the connection between the light guide plate body and the edge of the panel in this utility model.

[0022] Reference numerals: 1. Back plate; 2. Front cover; 3. Light guide plate body; 4. Light source module; 5. Rectangular mounting groove; 6. Transparent epoxy resin sealing layer; 7. Continuous flange structure; 8. Stepped groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] See Figures 1 to 4 As shown, a low-cost fire emergency sign light with high waterproof performance includes a back plate 1 and a faceplate 2, a light guide plate body 3 disposed between the back plate and the faceplate, a light source module 4 disposed on the light guide plate body, and a rectangular mounting groove 5 formed on the top side of the light guide plate body. In this embodiment, the light guide plate body is a PMMA material light guide plate with a thickness of 3-5mm; the depth of the rectangular mounting groove is 2-3mm, with a tolerance range of ±0.1mm. The light source module has a conventional structure in the prior art, and the faceplate is a PC panel with a thickness of 1.5mm. The back plate and the faceplate are fixed by ultrasonic welding. The thickness of the light source module is 1.2mm, and its size matches the size of the rectangular mounting groove, so that it can be embedded in the rectangular mounting groove.

[0026] Furthermore, in order to improve the illumination effect, the sidewall of the rectangular mounting groove is provided with an optical guiding slope; the inclination angle of the optical guiding slope is 45° and its surface roughness is Ra0.8. The optical guiding slope can guide the light from the light source module and improve the illumination effect.

[0027] During assembly, the light source module is positioned within the rectangular mounting groove, which is filled with a light-transmitting epoxy resin sealing layer 6 to encapsulate the light source module and form an integrated structure. The thickness of the light-transmitting epoxy resin sealing layer is 0.5 mm. It employs a double-layer combination of light-transmitting epoxy resin sealing layers with a refractive index of 1.5 ± 0.1 and a layer thickness of 0.5 mm, with overflow controlled to <0.2 mm, thereby ensuring effective light guiding and irradiation.

[0028] During processing, the main body of the light guide plate is simultaneously machined with a rectangular mounting groove of 120×25×2.5mm, which helps to improve processing efficiency. During assembly, the light source module is pre-installed in the rectangular mounting groove and fixed by conductive tape, and a light-transmitting epoxy resin sealing layer is injected (curing time 15 minutes / 80℃).

[0029] When installing the back panel and front cover, a torque of 25 N·m is applied to ensure that the sealing surfaces fit completely, guaranteeing the effectiveness and stability of the overall structure. Moreover, the overall structural dimensions are controlled within 200×150×40 mm.

[0030] In this embodiment, the edge of the light guide plate body is provided with a continuous flange structure 7, and the inner wall of the cover is provided with a stepped groove 8. The light guide plate body is located inside the cover, and the continuous flange structure and the stepped groove on the cover fit together to form a labyrinth-like sealed channel. A silicone grease filling layer is provided at the connection between the continuous flange structure and the stepped groove. The height of the continuous flange structure is 0.8 mm.

[0031] The above structure improves the overall waterproof performance, raising the waterproof rating to IP68. Actual testing showed no leakage at a water depth of 2m for 72 hours. Furthermore, it reduces the assembly process by three steps, thus lowering production costs. In addition, actual testing shows that its light transmittance is increased by 15%, and it supports modular replacement, reducing assembly and maintenance time by at least 5 minutes.

[0032] This utility model has the following positive effects: Its structure is rationally designed, with a rectangular mounting groove on the light guide plate body. The light source module is placed within this groove and sealed with a light-transmitting epoxy resin sealing layer, which improves waterproof performance and achieves an IP68 waterproof rating. Furthermore, its overall structure has fewer components, reducing assembly steps, thus improving assembly efficiency and lowering production costs. The light-transmitting epoxy resin sealing layer also ensures light transmission efficiency and supports modular replacement, enhancing sealing, waterproofing, and ease of assembly and disassembly, making it highly adaptable.

[0033] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0034] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A low-cost fire emergency sign light fixture with high waterproof performance, comprising a back plate and a front cover, a light guide plate body disposed between the back plate and the front cover, wherein a light source module is disposed on the light guide plate body, characterized in that: A rectangular mounting groove is provided on the top side of the light guide plate body; The sidewall of the rectangular mounting groove is provided with an optical guiding slope; The light source module is disposed in the rectangular mounting groove, and the rectangular mounting groove is filled with a light-transmitting epoxy resin sealing layer for wrapping the light source module and forming an integrated structure.

2. The low-cost fire emergency sign light fixture with high waterproof performance according to claim 1, characterized in that: The light guide plate body has a continuous flange structure along its edge, and the inner wall of the cover has a stepped groove. The light guide plate body is located inside the cover, and the continuous flange structure fits into the stepped groove on the cover to form a labyrinth-like sealed channel.

3. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 2, characterized in that: A silicone grease filling layer is provided at the connection between the continuous flange structure and the stepped groove.

4. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 1, characterized in that: The tilt angle of the optical guiding ramp is 45°.

5. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 1, characterized in that: The main body of the light guide plate is a PMMA light guide plate with a thickness of 3-5mm; The depth of the rectangular mounting groove is 2-3mm.

6. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 2, characterized in that: The height of the continuous flange structure is 0.8 mm.

7. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 1, characterized in that: The cover is a 1.5mm thick PC panel, and the back panel is ultrasonically welded to the cover.

8. A low-cost fire emergency sign light fixture with high waterproof performance according to claim 1, characterized in that: The thickness of the light-transmitting epoxy resin sealing layer is 0.5 mm, and the thickness of the light source module is 1.2 mm.

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