Waterproof surface light source

Abstract

The waterproof surface light source comprises a light guide assembly, a light emitting body, a first sealing piece and a frame, the light guide assembly is formed by stacking a light guide plate and at least one optical film layer, and the light guide assembly comprises a light emitting face and a back face which are opposite to each other; the luminous body is mounted on at least one side edge of the light guide assembly; the first sealing element is arranged on the side edge of the light guide assembly without the luminous body, and the edges of the first sealing element close to the light-emitting surface and the back surface of the light guide assembly respectively bend and extend towards the light-emitting surface and the back surface so as to partially cover the light-emitting surface and the back surface; the frame is installed on the outer side of the first sealing piece, and the edges, close to the light-emitting face and the back face of the light guide assembly, of the frame bend and extend towards the light-emitting face and the back face respectively and completely cover the edge of the first sealing piece. Through the overlapping design of the first sealing piece, the second sealing piece and the frame, the sealing performance among all layers of structures of the light guide assembly is enhanced, water vapor or condensate water is prevented from permeating into the light guide assembly to influence the light emitting performance of the area light source when the area light source emits light, and the service life of the area light source is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting, and in particular relates to a waterproof surface light source. Background Art

[0002] With the development of modern home appliance technology, refrigerators and freezers, as common refrigeration equipment in homes and commercial places, have attracted increasing attention to the design of their internal lighting systems. However, the surface light sources used in existing refrigeration equipment such as refrigerators and freezers on the market have some significant problems.

[0003] First, existing surface light sources suffer from uneven brightness distribution. In particular, the areas near the heat dissipation brackets, i.e., the edges of the left and right frames, emit brighter light than other areas, affecting the overall lighting effect within the refrigerator and the user's visual experience. Second, existing surface light sources lack waterproofing, making them susceptible to moisture intrusion over extended periods of use. This not only creates light spots and shadows when illuminated by the surface light source, but also significantly shortens its service life. Especially when an air outlet is located at the back of the refrigerator compartment, cold, humid air can easily intrude into the light source, damaging it. Utility Model Content

[0004] The purpose of the present utility model is to solve one of the above-mentioned technical problems and provide a waterproof surface light source. The overlapping design of the first seal and the frame enhances the sealing between the various layers of the light guide component, effectively preventing water vapor or condensed water from penetrating into the light guide component when the surface light source is emitting light and affecting the luminous performance of the surface light source, thereby extending the service life of the surface light source.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A waterproof surface light source, comprising:

[0007] A light guide assembly, composed of a light guide plate and at least one optical film layer, including a light emitting surface and a back surface opposite to each other;

[0008] A light emitting body is mounted on at least one side of the light guide assembly;

[0009] A first sealing member is provided on the other side of the light guide assembly where the light emitter is not mounted, and its edges close to the light emitting surface and the back surface of the light guide assembly are bent and extended toward the light emitting surface and the back surface respectively, so as to partially cover the light emitting surface and the back surface;

[0010] The frame is installed on the outside of the first seal, and its edges close to the light emitting surface and the back surface of the light guide assembly are bent and extended toward the light emitting surface and the back surface respectively, and completely cover the edge of the first seal.

[0011] In some embodiments of the present invention, the second sealant includes multiple sections, which are respectively arranged between the first sealant and the frame, and its edges close to the light emitting surface and the back surface of the light guide component are located between the edge of the first sealant and the edge of the frame.

[0012] In some embodiments of the present invention, the optical film layer includes a diffusion layer and a reflection layer; the diffusion layer is stacked on the side of the light guide plate close to the light emitting surface, and the reflection layer is stacked on the side of the light guide plate close to the back surface.

[0013] In some embodiments of the present invention, edges of the diffusion layer and the reflection layer are flush with the edge of the light guide plate.

[0014] In some embodiments of the present invention, the optical film layer further includes an appearance layer, and the appearance layer is stacked on a side of the diffusion layer close to the light emitting surface.

[0015] In some embodiments of the present invention, the light guide plate further comprises an adhesive layer, which is applied along the edges of the light guide plate, between the light guide plate and the diffusion layer, and between the light guide plate and the reflective layer;

[0016] In some embodiments of the present invention, a first gap is formed between the frame and the back surface of the light guide assembly, and a first filling and fixing layer is disposed in the first gap.

[0017] In some embodiments of the present invention, a heat dissipation bracket is further included, which is arranged on the side of the light guide component where the light-emitting body is installed; the heat dissipation bracket is formed with a mounting groove, the light-emitting body is arranged in the mounting groove, and the side of the light guide component is inserted into the mounting groove and connected to the heat dissipation bracket.

[0018] In some embodiments of the present invention, a second gap is formed between the groove wall of the installation groove and the back surface of the heat dissipation bracket, and a second filling and fixing layer is provided in the second gap.

[0019] In some embodiments of the present invention, the light-emitting body includes a plurality of LED lamp beads arranged toward the light guide plate.

[0020] The beneficial effects of the present invention are:

[0021] 1. The utility model solves the technical problem that the surface light source is prone to water ingress during long-term use in refrigeration equipment. The overlapping design of the first seal and the frame enhances the sealing between the various layers of the light guide component, which can effectively prevent water vapor or condensed water from penetrating into the light guide component when the surface light source is emitting light, thereby affecting the luminous performance of the surface light source and extending the service life of the surface light source.

[0022] 2. The utility model provides a second sealing member between the first sealing member and the frame, thereby further improving the sealing effect of the surface light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of a waterproof surface light source;

[0025] Figure 2 This is an exploded view of a waterproof surface light source;

[0026] Figure 3 It is a side view of a waterproof surface light source;

[0027] Figure 4 for Figure 3 Cross-section of section A;

[0028] Figure 5 It is a top view of a waterproof surface light source;

[0029] Figure 6 for Figure 5 Cross-section of section B;

[0030] Wherein, the accompanying drawings are marked as follows:

[0031] 1. Light guide assembly; 11. Light guide plate; 12. Diffusion layer; 13. Reflection layer; 2. Light emitting body; 3. First sealing member; 4. Frame; 41. Left frame; 42. Right frame; 5. Second sealing member; 6. Adhesive layer; 7. Heat dissipation bracket; 8. First filling and fixing layer; 9. Second filling and fixing layer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0033] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, they can also apply the present application to other similar scenarios based on these drawings without any creative work.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of the features.

[0035] Unless otherwise defined, technical or scientific terms used in this application shall have the ordinary meanings understood by persons of ordinary skill in the technical field to which this application belongs. The terms "a," "an," "an," and similar expressions used in this application do not indicate limitations on quantity and may refer to the singular or plural. The terms "include," "comprising," "having," and any variations thereof used in this application are intended to cover non-exclusive inclusions.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0037] The technical solution of the present invention is described in detail below in conjunction with specific embodiments and the accompanying drawings.

[0038] As attached Figure 1 -Attached Figure 6 As shown, in an illustrative embodiment of a waterproof surface light source of the present invention, the surface light source is used for lighting refrigeration equipment such as refrigerators and freezers, and includes a light guide assembly 1, a light emitting body 2, a first sealing member 3 and a frame 4.

[0039] The light guide assembly 1 is composed of a light guide plate 11 and at least one optical film layer stacked together, including a light emitting surface and a back surface opposite to each other. The light guide plate 11 and each optical film layer are arranged in a rectangular shape.

[0040] The base material of the light guide plate 11 may be made of, but not limited to, glass, acrylic, polycarbonate, and the like.

[0041] The optical film layer covering the surface of the light guide plate 11 includes a diffusion layer 12 stacked on the side of the light guide plate 11 near the light-emitting surface to ensure uniform light emission, and a reflective layer 13 stacked on the side of the light guide plate 11 near the back to reflect light emitted from the back of the light guide plate 11, thereby improving light utilization efficiency, reducing light loss, and achieving a more efficient lighting effect. The edges of the diffusion layer 12 and the reflective layer 13 are flush with the edges of the light guide plate 11 to ensure a sealed edge of the light guide assembly 1.

[0042] The light emitting body 2 is configured to provide light and is installed on the top edge of the light guide assembly 1. The light emitting body 2 includes a plurality of LED lamp beads arranged in a direction toward the light guide plate 11.

[0043] The first sealant 3 surrounds the other three sides of the light guide assembly 1 where the light emitter 2 is not mounted, extending integrally along the left, bottom, and right edges of the light guide assembly 1. It is used to cover the edges of the light guide assembly 1 and prevent water vapor or water from leaking between the light guide plate 11, the diffusion layer 12, and the reflective layer 13. The edges of the first sealant 3 near the light emitting surface and the back surface of the light guide assembly 1 bend and extend toward the light emitting surface and the back surface, respectively, and adhere to the diffusion layer 12 and the reflective layer 13, respectively, to partially cover the light emitting surface and the back surface of the light guide assembly 1.

[0044] The frame 4 includes a left frame 41 and a right frame 42. The left frame 41 and the right frame 42 are respectively installed on the outside of the first seal 3 on the left edge of the light guide component 1 and the outside of the first seal 3 on the right edge of the light guide component 1. The edges thereof close to the light emitting surface and the back surface of the light guide component 1 are bent and extended toward the light emitting surface and the back surface respectively, and completely cover the edge of the first seal 3, and are used to cover the first seal 3 to further prevent water vapor or water from leaking into between the light guide plate 11, the diffusion layer 12 and the reflective layer 13.

[0045] This technical solution solves the technical problem that surface light sources are prone to water ingress when used for a long time in refrigeration equipment. The overlapping design of the first seal 3 and the frame 4 enhances the sealing between the various layers of the light guide component 1, which can effectively prevent water vapor or condensed water from penetrating into the light guide component 1 when the surface light source is emitting light, thereby affecting the luminous performance of the surface light source and extending the service life of the surface light source.

[0046] In some embodiments of the present invention, a second seal 5 is further included. The second seal 5 includes two sections, which are respectively arranged between the first seal 3 and the left frame 41, and between the first seal 3 and the right frame 42, close to the bottom edge of the light guide component 1. The second seal 5 is close to the edge of the light emitting surface and the back edge of the light guide component 1, between the edge of the first seal 3 and the edge of the frame 4. The material of the second seal 5 and the first seal 3 can be the same or different. The second seal 5 can be set at other positions between the first seal 3 and the frame 4 according to the specific shape of the light guide plate 11, and this application does not impose any restrictions on this. The setting of the second seal 5 further enhances the sealing of the surface light source.

[0047] The cross sections of the first sealing member 3 , the second sealing member 5 and the frame 4 are all arranged in a P-shape, wherein the first sealing member 3 and the second sealing member 5 are made of colloid material, and the frame 4 is made of metal material.

[0048] In some embodiments of the present invention, the optical film further includes an exterior layer, which is stacked on the side of the diffusion layer 12 near the light-emitting surface. The added exterior layer provides additional protection for the light guide assembly 1 from scratches and abrasion; it also serves a decorative purpose. By printing a pattern on the exterior layer, the luminous effect of the surface light source can be enriched.

[0049] In some embodiments of the present invention, as shown in the attached Figure 4 As shown, it further includes an adhesive layer 6 made of a special material. The adhesive layer 6 is arranged along the four edges of the light guide plate 11, between the light guide plate 11 and the diffusion layer 12, and between the light guide plate 11 and the reflective layer 13. The setting of the adhesive layer 6 ensures the close fit between the light guide plate 11 and the optical film layer, enhances the stability of the structure, and solves the problem that the light near the heat dissipation bracket 7 and the left and right frame edges is brighter than other areas. At the same time, it can further prevent water vapor or condensed water from penetrating into the space between the light guide plate 11 and the optical film layer, thereby improving the sealing performance.

[0050] In some embodiments of the present invention, as shown in the attached Figure 6 As shown, a first gap is formed between the frame 4 and the back surface of the light guide assembly 1, and a first filling and fixing layer 8 is provided in the first gap. The first filling and fixing layer 8 provided in the first gap between the frame 4 and the back surface of the light guide assembly 1 helps to improve the stability and sealing of the frame 4 encapsulating the light guide assembly 1 and reduce light leakage.

[0051] Some embodiments of the present invention further include a heat sink bracket 7, which is disposed on the side of the light guide assembly 1 where the light emitter 2 is mounted, i.e., the top edge of the light guide assembly 1. The heat sink bracket 7 is shaped like a "P" and defines a mounting groove with a notch facing downward. The light emitter 2 is disposed within the mounting groove, and the top edge of the light guide assembly 1 is inserted into the mounting groove and connected to the heat sink bracket 7. The heat sink bracket 7 utilizes a metal support, which improves the heat dissipation efficiency of the light emitter 2 and extends the service life of the light source. It also encapsulates the light emitter 2 and improves the safety of the surface light source.

[0052] In some embodiments of the present invention, a second gap is formed between the groove wall of the mounting groove and the back side of the light guide component 1, and a second filling fixing layer 9 is arranged in the second gap. The second filling fixing layer 9 arranged in the second gap between the groove wall of the heat dissipation bracket 7 and the back side of the light guide component 1 helps to improve the sealing between the heat dissipation bracket 7 and the light guide component 1 and reduce light leakage.

[0053] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0054] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A waterproof surface light source, characterized in that: include: A light guide assembly, composed of a light guide plate and at least one optical film layer, including a light emitting surface and a back surface opposite to each other; a light emitting body, mounted on at least one side of the light guide assembly; A first sealing member is provided on the other side of the light guide assembly where no light emitter is installed, and its edges close to the light emitting surface and the back surface of the light guide assembly are bent and extended toward the light emitting surface and the back surface respectively, so as to partially cover the light emitting surface and the back surface; A frame is installed on the outside of the first seal, and its edges close to the light emitting surface and the back surface of the light guide assembly are bent and extended toward the light emitting surface and the back surface respectively, and completely cover the edge of the first seal.

2. The waterproof surface light source according to claim 1, characterized in that: It further includes a second sealant; the second sealant includes multiple sections, which are respectively arranged between the first sealant and the frame; the edges of the second sealant close to the light emitting surface and the back surface of the light guide component are located between the edge of the first sealant and the edge of the frame.

3. The waterproof surface light source according to claim 1, characterized in that: The optical film layer includes a diffusion layer and a reflection layer; the diffusion layer is stacked on a side of the light guide plate close to the light emitting surface, and the reflection layer is stacked on a side of the light guide plate close to the back surface.

4. The waterproof surface light source according to claim 3, characterized in that: The edges of the diffusion layer and the reflection layer are flush with the edge of the light guide plate.

5. The waterproof surface light source according to claim 3 or 4, characterized in that: The optical film layer further includes an appearance layer, and the appearance layer is stacked on a side of the diffusion layer close to the light emitting surface.

6. The waterproof surface light source according to claim 3 or 4, characterized in that: The invention further comprises an adhesive layer, wherein the adhesive layer is arranged along the four edges of the light guide plate, between the light guide plate and the diffusion layer, and between the light guide plate and the reflection layer.

7. The waterproof surface light source according to claim 1, characterized in that: A first gap is formed between the frame and the back surface of the light guide assembly, and a first filling and fixing layer is arranged in the first gap.

8. The waterproof surface light source according to claim 1, characterized in that: It further includes a heat dissipation bracket, which is arranged on the side of the light guide component where the light-emitting body is installed; the heat dissipation bracket is formed with a mounting groove, the light-emitting body is arranged in the mounting groove, and the side of the light guide component is inserted into the mounting groove and connected to the heat dissipation bracket.

9. The waterproof surface light source according to claim 8, characterized in that: A second gap is formed between the groove wall of the installation groove and the back surface of the heat dissipation bracket, and a second filling and fixing layer is arranged in the second gap.

10. The waterproof surface light source according to claim 1, characterized in that: The light-emitting body includes a plurality of LED lamp beads arranged in a direction toward the light guide plate.

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