Impact-resistant marker light with diffuser

Abstract

The utility model discloses an anti -impact's marker light with diffusion membrane, including protection shell and the light guide plate of setting in the protection shell, is equipped with the diffusion membrane between light guide plate and protection shell inner wall, be equipped with the pattern of hollow on the protection shell, its characterized in that: the filling portion of convex is equipped with on the diffusion membrane, the filling portion is located in the pattern to thereby can improve the anti -impact ability of light guide plate at the pattern. When the impact hammer is impacted at the pattern, the filling portion can reduce even fill the gap between the pattern and test bench surface, thereby reduce the bending deformation of light guide plate at the pattern, thereby improved the anti -impact ability of light guide plate at the pattern, to reach the test standard, thereby improved the qualified rate of product.

Description

Technical Field

[0001] This utility model relates to a safety indicator light, and more particularly to an impact-resistant indicator light with a diffusion film. Background Technology

[0002] LED safety exit signs belong to the fire emergency light series. They have the advantages of reliable operation, high stability, and long life. They are suitable for use in factories, hotels, shopping malls, buildings and other places or environments for lighting, path guidance and safety exit location indication.

[0003] LED safety exit signs are mainly composed of a protective shell, a light guide plate, a main board with LED light panels, and a diffusion film. The protective shell is generally made of metal plate with perforated indicator patterns. The light guide plate is a transparent plate made of PS material. The LED light panels are located to the side of the light guide plate. Light is emitted from the perforated indicator patterns through the light guide plate to form luminous indicator patterns. To ensure uniform light emission, a diffusion film is placed between the light guide plate and the protective shell, which serves to even out the light.

[0004] However, the government now has strength requirements for indicator lights to improve overall product quality. The testing method involves placing the indicator light flat on a test bench and then impacting it three times in different locations using a 0.5 joule impact hammer. After the impact, it must be ensured that the internal components of the light body do not break.

[0005] Because the previous indicator lights used PS material light guide plates, which are relatively brittle and the metal plate has a certain thickness, there is a certain gap between the light guide plate and the test platform surface at the indicator pattern, forming a suspended state. When the impact hammer impacts the indicator pattern, the light guide plate at that point is prone to bending and deformation, causing it to break and resulting in product defects. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides an impact-resistant sign light with a diffusion film.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] An impact-resistant marker light with a diffusion film includes a protective shell and a light guide plate disposed inside the protective shell. A diffusion film is provided between the light guide plate and the inner wall of the protective shell. The protective shell has a hollowed-out pattern. The feature is that the diffusion film has a raised filling portion, which is located in the pattern, thereby improving the impact resistance of the light guide plate at the pattern.

[0009] The thickness of the filling portion is the same as the depth of the pattern.

[0010] The shape of the filling part is the same as the shape of the pattern.

[0011] The filling part is attached to the diffusion film with adhesive.

[0012] The filling part and the diffusion membrane are integrally injection molded.

[0013] The protective shell includes a front cover and a back cover, both of which are provided with the pattern. There are two diffusion films, which are respectively disposed on both sides of the light guide plate.

[0014] The beneficial effects of this utility model are as follows: The present utility model has a raised filling part on the diffusion film, and the filling part is located in the pattern. When the impact hammer impacts the pattern, the filling part can reduce or even fill the gap between the pattern and the test platform surface, thereby reducing the bending deformation of the light guide plate at the pattern, thereby improving the impact resistance of the light guide plate at the pattern to meet the test standards and thus improving the product qualification rate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is an overall structural view of the present invention;

[0017] Figure 2 This is an exploded structural view of the present invention. Detailed Implementation

[0018] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0019] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0020] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0021] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0022] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0023] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0024] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0025] Reference Figure 1 , Figure 2 This utility model discloses an impact-resistant marker light with a diffusion film, including a protective shell 1 and a light guide plate 2 disposed within the protective shell 1. A diffusion film 3 is provided between the light guide plate 2 and the inner wall of the protective shell 1. The protective shell 1 has a hollowed-out pattern 4. The protective shell 1 is preferably made of metal plate, while the light guide plate 2 is preferably made of transparent PS material. The diffusion film 3 has a raised filling part 5, which is located in the pattern 4, thereby reducing or even filling the gap between the pattern 4 and the test platform surface, thus reducing the bending deformation of the light guide plate 2 at the pattern 4 and improving the impact resistance of the light guide plate 2 at the pattern 4. Of course, we can also improve the toughness of the light guide plate 2 by changing the material of the light guide plate 2 to meet the impact test, but the price of a tougher material is much more expensive than the current PS material, which will increase the overall cost of the product by more than 30%. Therefore, this application preferably adopts the above structure to achieve impact resistance, and the above structure has very little modification to the overall product, only requiring a design change to the diffusion film 3 to achieve the purpose.

[0026] As shown in the figure, the indicator light in this application is a double-sided indicator. Therefore, the protective shell 1 includes a front cover 11 and a rear cover 12. The front cover 11 and the rear cover 12 can be positioned and fixed by buckle protrusions and buckle slots, or they can be locked directly by screws. Of course, the fixing structure of the front cover 11 and the rear cover 12 is a conventional structure, so it will not be described in detail. The pattern 4 is provided on both the front cover 11 and the rear cover 12. There are two diffuser films 3, which are respectively set on both sides of the light guide plate 2. Of course, both diffuser films 3 have filling parts 5, so that the impact resistance can be improved no matter which side is tested.

[0027] As a further preferred structure, the thickness of the filling part 5 is the same as the depth of the pattern 4. In this case, there is no gap between the filling part 5 and the surface of the test stage, so the light guide plate 2 will not bend or deform at this point. Instead, the surface of the test stage becomes the support for the light guide plate 2, thereby achieving the best impact resistance. Moreover, the surface of the filling part 5 can be flush with the surface of the protective shell 1, making the overall product more aesthetically pleasing.

[0028] As a further preferred structure, the shape of the filling part 5 is the same as the shape of the pattern 4. In this case, the filling part 5 can fill the pattern 4, so there is no direct gap between the light guide plate 2 and the test table surface. Therefore, the filling part 5 serves as the support for the light guide plate 2 at any position where the impact hammer strikes the pattern 4, thereby reducing the bending deformation of the light guide plate 2 and improving the test pass rate.

[0029] As a specific design structure of the filling part 5, the filling part 5 is glued to the diffusion film 3. The filling part 5 can be made of a different material than the diffusion film 3. It can be a cheaper elastic material, or it can be formed by cutting or punching without injection molding. Another advantage is that the original structure of the diffusion film 3 does not need to be changed, and no new mold costs are added, thus the cost is slightly lower.

[0030] As another specific design structure of the filling part 5, the filling part 5 is integrally injection molded with the diffusion film 3. The advantage of this structure is that the filling part 5 and the diffusion film 3 are firmly bonded together, and there is no need for assembly between the filling part 5 and the diffusion film 3, which saves assembly time.

[0031] The above provides a detailed description of an impact-resistant marker light with a diffusion film provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An impact-resistant marker light with a diffusion film, comprising a protective shell (1) and a light guide plate (2) disposed within the protective shell (1), wherein a diffusion film (3) is provided between the light guide plate (2) and the inner wall of the protective shell (1), and the protective shell (1) is provided with a hollowed-out pattern (4), characterized in that: The diffusion film (3) is provided with a raised filling part (5), which is located in the pattern (4) to improve the impact resistance of the light guide plate (2) in the pattern (4).

2. The impact-resistant marker light with a diffusion film according to claim 1, characterized in that: The thickness of the filling part (5) is the same as the depth of the pattern (4).

3. The impact-resistant marker light with a diffusion film according to claim 1, characterized in that: The shape of the filling part (5) is the same as the shape of the pattern (4).

4. The impact-resistant marker light with a diffusion film according to claim 1, characterized in that: The filling part (5) is glued to the diffusion film (3).

5. The impact-resistant marker light with a diffusion film according to claim 1, characterized in that: The filling part (5) and the diffusion membrane (3) are integrally injection molded.

6. The impact-resistant marker light with a diffusion film according to claim 1, characterized in that: The protective shell (1) includes a front cover (11) and a rear cover (12), both of which are provided with the pattern (4). There are two diffusion films (3) respectively disposed on both sides of the light guide plate (2).

Images