Light indicating device of power electronic equipment

Abstract

The utility model discloses a light indicating device of power electronic equipment, which comprises a plurality of light sources arranged side by side along the transverse direction, and further comprises a light guide plate provided with a plurality of display areas corresponding to the light sources; the light shielding plate is arranged between the light sources and the light guide plate, the light shielding plate is provided with a plurality of light propagation channels, one end of each light propagation channel directly faces one display area, and the other end of each light propagation channel directly faces one light source; the light indicating device comprises a light channeling prevention piece used for preventing light from spreading towards the adjacent display areas, the light channeling prevention piece is arranged in the middle between the adjacent display areas, and the thickness of the light channeling prevention piece in the first direction is not smaller than that of the middle. The light indicating device provided by the utility model can more effectively prevent light channeling.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronics, and in particular relates to a light indicating device of a power electronics device. Background Art

[0002] In the field of industrial products, many products have LED display lights. The light source inside the machine needs to transmit and scatter the internal light through the light guide plate to present the corresponding indicator light effect. When the transparent display area is long and the two adjacent indicator lights are very close, light leakage will occur, especially when the device is in dim light. The light leakage phenomenon will make it difficult for users to distinguish which specific indicator light is shining. At this time, it is necessary to prevent the device from light leakage to bring users a better user experience. However, the current design of anti-light leakage is not good enough and still needs to be improved. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a light indicating device for power electronic equipment, which has a better effect of preventing light from crossing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A light indicating device of a power electronic device, comprising a plurality of light sources arranged in parallel in a transverse direction, and the light indicating device further comprises:

[0006] A light guide plate having a display area corresponding to the plurality of light sources;

[0007] A light shielding plate is arranged between the light source and the light guide plate, the light shielding plate has a plurality of light propagation channels, one end of the light propagation channel faces one of the display areas, and the other end faces one of the light sources;

[0008] The light indicating device comprises an anti-light-channeling member for blocking light from propagating to adjacent display areas. The anti-light-channeling member is arranged in the middle part between adjacent display areas. The thickness of the anti-light-channeling member along the first direction is not less than the thickness of the middle part.

[0009] Preferably, the anti-light-channeling component includes a first anti-light-channeling component embedded in the middle portion and / or a second anti-light-channeling component arranged on the shading plate, and the second anti-light-channeling component is embedded in the middle portion.

[0010] More preferably, the first light-interference prevention member includes a first groove filled with a light-shielding material, and the second light-interference prevention member includes a boss arranged on the light-shielding plate.

[0011] Preferably, the light-shielding material is black sealant.

[0012] Preferably, the display area protrudes outward relative to the body of the light guide plate, and the length of the display area / the distance between two adjacent display areas is greater than 4.

[0013] Preferably, the length of the display area is 50-60 mm.

[0014] Specifically, the length of the display area is 54 mm.

[0015] Preferably, the first grooves and the display areas are arranged alternately.

[0016] Preferably, the shading plate and the light guide plate are bonded and fixed.

[0017] Preferably, the first groove is arranged on the middle part; the middle part is also provided with a second groove, and the boss is inserted into the second groove.

[0018] Preferably, the shading plate has a plurality of enclosures, and the interior of the enclosures constitutes the light propagation channel.

[0019] Preferably, the display area has a first end and a second end, the first end protrudes from the upper cover surface of the power electronic device, and the second end is inserted into the light propagation channel.

[0020] Preferably, the light guide plate is provided with a first positioning column, the light shielding plate is provided with a positioning hole, and the first positioning column is inserted into the positioning hole to connect the light shielding plate and the light guide plate.

[0021] Preferably, the light guide plate is made of transparent plastic.

[0022] The utility model adopts the above solution, which has the following advantages compared with the prior art:

[0023] In the light indicating device of the power electronic device of the utility model, the light emitted by the light source enters the display area through the light propagation channel, and then transmits the light to the outside of the power electronic device through the display area. The thickness of the anti-light-channeling component is greater than or equal to the thickness of the middle part, which ensures that during the light propagation process, the anti-light-channeling component can effectively prevent the lateral propagation of light, that is, no light-channeling phenomenon occurs, and the customer experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1is a schematic diagram of a light indicating device according to an embodiment of the utility model;

[0026] Figure 2 is an exploded schematic diagram of a light indicating device according to an embodiment of the utility model;

[0027] Figure 3 is a side view of a light indicating device according to an embodiment of the utility model;

[0028] Figure 4 It is a cross-sectional view of a light indicating device according to an embodiment of the utility model.

[0029] in,

[0030] 100, light indicating device; 200, PCB board; 201, light source; 300, upper cover; 301, plug hole; 302, rivet nut; 303, screw;

[0031] 1. light guide plate; 11. body; 12. display area; 121. first end; 122. second end; 13. light propagation channel; 14. first groove; 15. second groove; 16. first positioning column; 17. second positioning column; 18. middle part;

[0032] 2. Sunshade; 21. Boss; 23. Enclosure; 26. Positioning hole. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] This embodiment provides a light indicating device of a power electronic device, comprising a PCB board 200 and a plurality of light sources 201 arranged on the PCB board 200, wherein the plurality of light sources 201 are arranged in parallel in a horizontal direction. Specifically, the light sources 201 are LED lamps.

[0035] Furthermore, the light indicating device 100 further includes a light guide plate 1 and a light shielding plate 2. The light shielding plate 2 is located between the light guide plate 1 and the light source 201. The light shielding plate 2 is made of black, opaque plastic material; the material of the light guide plate 1 is transparent plastic. More specifically, the material of the light guide plate 1 is PC or PMMA, which has good light transmittance. A light diffuser is added to the light guide plate 1 itself, which has good light guiding and uniform display effects, and can evenly distribute the light emitted by the LED lamp.

[0036] Furthermore, the shading plate 2 and the light guide plate 1 are fixedly connected, specifically, fixedly connected by bonding. The light guide plate 1 is also provided with a first positioning post 16, and the shading plate 2 is provided with a positioning hole 26. The first positioning post 16 is inserted into the positioning hole 26 to connect the shading plate 2 and the light guide plate 1, or in other words, the shading plate 2 is positioned by the light guide plate 1, and after the positioning is completed, the shading plate 2 is bonded to the corresponding position of the light guide plate 1 through the adhesive on the shading plate 2.

[0037] Reference Figure 1 As shown, the light guide plate 1 is in the shape of a flat plate, and is provided with a plurality of display areas 12 corresponding to the light sources 201, specifically 5. The display area 12 protrudes outward relative to the body 11 of the light guide plate 1, and the display area 12 is used to transmit the light emitted by the LED lamp to the outside of the power electronic equipment. Since the material of the display area 12 is transparent plastic, it has good light transmission and light diffusion functions.

[0038] The shading plate 2 has a plurality of enclosures 23, the interior of the enclosures 23 constitutes a light propagation channel 13, the light propagation channel 13 is located between the LED lamp and the display area 12, one end of the light propagation channel 13 faces a display area 12, and the other end faces a light source 201. The display area 12 has a first end 121 and a second end 122, the first end 121 protrudes from the surface of the upper cover 300 of the power electronic device, thereby realizing the product working status indication and the human-computer interaction function, and the second end 122 is inserted into the light propagation channel 13 to enhance the light guiding and light entering function. The upper cover 300 is provided with a corresponding plug hole 301, and the display area 12 is inserted into the plug hole 301 and protrudes from the surface of the upper cover 300. Furthermore, there are four second positioning posts 17 at the four corners of the light guide plate 1 for completing the assembly with the upper cover 300 of the power electronic device. Specifically, the upper cover 300 has a rivet nut 302, and the PCB board is provided with screw holes. The upper cover 300, the light guide plate 1 and the PCB board 200 are locked by the rivet nut 302 and the screw 303. When the light propagates, the light first enters the light propagation channel 13, and then enters the first end 121 through the second end 122, and transmits the light emitted by the LED lamp to the outside of the power electronic device to indicate the working status of the power electronic device.

[0039] Furthermore, the light indicating device 100 includes an anti-light-channeling member for blocking light from propagating to adjacent display areas 12. The anti-light-channeling member is disposed on the middle portion 18 between adjacent display areas 12, and the thickness of the anti-light-channeling member along the first direction is not less than the thickness of the middle portion 18. "Light channeling" can be understood as unnecessary or redundant light in the light propagation path, or light that should not appear in the corresponding area. It should be noted that the "first direction" here refers to the adjacent Figure 4 The first direction shown in .

[0040] Specifically, the anti-light-channeling member includes a first anti-light-channeling member embedded in the middle part 18 and / or a second anti-light-channeling member disposed on the shading plate 2, the second anti-light-channeling member is embedded in the middle part 18, the first anti-light-channeling member is specifically a first groove filled with a shading material, and the second anti-light-channeling member is specifically a boss 21 disposed on the shading plate 2. Specifically in this embodiment, a plurality of first grooves 14 are disposed on the light guide plate 1, and a plurality of bosses 21 are disposed on the shading plate 2. The sum of the thickness of the first grooves 14 and the bosses 21 is greater than or equal to the thickness of the middle part 18, which ensures that the light emitted by the LED will only enter the corresponding display area 12, and will not enter the adjacent display area 12 or prevent the light from propagating horizontally ("horizontally" means Figure 4 In other embodiments, only the first groove may be provided on the light guide plate or only the boss may be provided on the light shielding plate, and the thickness of the boss or the first groove in the first direction is greater than or equal to the thickness of the middle portion. Figure 4 As shown, the light guide plate 1 is further provided with a second groove 15. During actual assembly, the second groove 15 and the boss 21 coincide with each other, that is, the boss 21 is inserted into the second groove 15. The first groove 14 and the second groove 15 are respectively provided integrally with the body 11.

[0041] More specifically, the number of the first grooves 14 and the bosses 21 is 4, the number of the display areas 12 is 5, a first groove 14 is provided between two adjacent display areas 12, and the first grooves 14 and the display areas 12 are arranged alternately. The light-shielding material filled in the first grooves 14 is black sealant, which can not only play a sealing role but also block light. In actual installation, the first grooves 14 are first filled with black sealant and then fitted with the upper cover 300.

[0042] This embodiment is mainly aimed at industrial product panel status indicator lights, especially multiple parallel and adjacent long strip indicator light scenes. The length of the display area / the distance between two adjacent display areas is greater than 4, and the length of the display area is 50-60mm. Specifically in this embodiment, the length of the display area is 54mm.

[0043] Traditional single-group circular hole indicator lights generally only require a light guide column or a light guide plate (including a diffuse light uniformity effect) to complete; if it is a multi-group circular hole type or a long strip type (the display area is short and the interval between adjacent display areas is large), the light guide plate (column) can be combined with the corresponding shading structure to complete the display effect.

[0044] This embodiment is mainly aimed at the case of multiple groups of long strip displays (light guide window length / adjacent light guide window spacing <4). The light guide column or light guide plate (including the uniform light diffusion effect) can cooperate with the corresponding shading plate to achieve the display effect. However, light leakage will occur on the display, especially in dim light or night scenes. The light leakage of the product indication will mislead the user, and even cause economic losses due to incorrect operation due to the misleading effect of the indicator light.

[0045] Based on this, the anti-light-crossing device includes a light guide plate 1 and a light shielding plate 2. The front of the light guide plate 1 is provided with a first groove 13 filled with black sealant. The light shielding plate 2 is provided with a boss 21. The thickness of the boss 21 and the first groove 13 is greater than or equal to the thickness of the middle part 18. Specifically in this embodiment, the first groove 13 is first filled with black sealant and then fitted with the upper cover 300 to prevent the light between the first end portions 121 of the two adjacent display areas 12 from propagating horizontally, thereby avoiding light cross-talk; the light shielding strip 22 is directly inserted into the corresponding second groove 15 on the back of the light guide plate 1 when the light shielding plate 2 is assembled with the light guide plate 1, to prevent the light between the second end portions 122 of the two adjacent display areas 12 from propagating horizontally, to prevent light cross-talk, so that the indicator light effect of the product itself is accurate and at the same time brings a better user experience.

[0046] The black sealant in this embodiment is the same material as the sealant used for sealing the light guide plate 1 and installing it on the upper cover 300, but the amount used is relatively increased, and there is no need to add new materials and new assembly processes; the boss 21 on the sunshade 2 is integrally injection-molded with the sunshade 2, and when installing, it only needs to be snapped into the corresponding second groove 15. The installation is convenient and quick, and there is no need to add additional material types and processes, thus saving installation costs and material costs. It is relatively easy to use and can prevent the occurrence of light leakage defects, which can be said to kill two birds with one stone.

[0047] As shown in this specification and claims, the terms "comprises" and "include" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements. The term "and / or" as used herein includes any combination of one or more of the relevant listed items.

[0048] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the accompanying drawings.

[0049] The above embodiment is only for illustrating the technical concept and features of the utility model, and is a preferred embodiment. Its purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent transformation or modification made according to the principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A light indicating device for a power electronic device, comprising a plurality of light sources arranged in parallel in a transverse direction, the light indicating device further comprising: A light guide plate having a display area corresponding to the plurality of light sources; A light shielding plate is disposed between the light source and the light guide plate, the light shielding plate having a plurality of light propagation channels, one end of the light propagation channel faces one of the display areas, and the other end faces one of the light sources; It is characterized in that the light indicating device includes an anti-light-channeling component for blocking light from propagating to adjacent display areas, and the anti-light-channeling component is arranged on the middle part between adjacent display areas, and the thickness of the anti-light-channeling component along the first direction is not less than the thickness of the middle part.

2. The light indicating device according to claim 1, characterized in that: The anti-light-channeling component includes a first anti-light-channeling component embedded in the middle portion and / or a second anti-light-channeling component arranged on the light shielding plate, and the second anti-light-channeling component is embedded in the middle portion.

3. The light indicating device according to claim 2, characterized in that: The first light-interference preventing member includes a first groove filled with a light-shielding material, and the second light-interference preventing member includes a boss disposed on the light-shielding plate.

4. The light indicating device according to claim 3, characterized in that: The shading material is black sealant.

5. The light indicating device according to claim 3, characterized in that: The display area protrudes outward relative to the main body of the light guide plate, and the length of the display area / the distance between two adjacent display areas is greater than 4; the length of the display area is 50-60 mm.

6. The light indicating device according to claim 5, characterized in that: The first grooves and the display areas are arranged alternately.

7. The light indicating device according to claim 1, characterized in that: The light shielding plate and the light guide plate are bonded and fixed.

8. The light indicating device according to claim 3, characterized in that: The first groove is arranged on the middle part; the middle part is also provided with a second groove, and the boss is inserted into the second groove.

9. The light indicating device according to claim 1, characterized in that: The shading plate has a plurality of enclosures, and the interior of the enclosures constitutes the light propagation channel.

10. The light indicating device according to claim 9, characterized in that: The display area has a first end and a second end, the first end protrudes from the upper cover surface of the power electronic device, and the second end is inserted into the light propagation channel.

11. The light indicating device according to claim 1, characterized in that: The light guide plate is provided with a first positioning post, the light shielding plate is provided with a positioning hole, and the first positioning post is inserted into the positioning hole to connect the light shielding plate and the light guide plate.

12. The light indicating device according to claim 1, characterized in that: The material of the light guide plate is transparent plastic.

Images