Light guide structure and handheld infrared equipment

Abstract

The utility model discloses a light guide structure and handheld infrared equipment, and relates to the technical field of light guide equipment. The light guide structure comprises a base body and a coating structure, the base body is a light-transmitting part, and the coating structure is a light-proof part; the base body is of an integrated structure and comprises a first connecting plate and a plurality of light guide columns, and the light guide columns are sequentially arranged at intervals in the first direction and are all arranged on the same side of the first connecting plate in the second direction; the light guide column comprises a light guide block and a first bridging arm, the first bridging arm is connected between the light guide block and the first connecting plate in the second direction, and a mounting cavity is formed in the light guide block; the coating structure is of an integrated structure and comprises light blocking structures, and the adjacent light guide columns are separated through the light blocking structures. The base body is matched with the light blocking structure, the problem of light channeling between the light guide blocks can be avoided, the base body is of an integrated structure, the wrapping structure is of an integrated structure, the number of parts can be reduced while the normal light guide capacity is guaranteed, and therefore the machining or assembling steps of the light guide structure are reduced, and machining efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of light guiding equipment technology, and in particular to a light guiding structure and a handheld infrared device. Background Technology

[0002] Currently, handheld infrared products require the addition of light guide columns to direct the light from the emitting element outwards. Existing manufacturing processes require the separate assembly of multiple light guide columns with the housing, light-blocking structure, and other components, resulting in numerous processing steps and low product manufacturing efficiency.

[0003] Therefore, how to improve the processing efficiency of light guide structures is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a light guide structure and a handheld infrared device including the above-mentioned light guide structure, which has high processing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A light guide structure includes a substrate and a covering structure. The substrate is a light-transmitting component, and the covering structure is an opaque component. The substrate is an integral structure, including a first connecting plate and a plurality of light guide pillars. Each light guide pillar is arranged sequentially at intervals along a first direction and is located on the same side of the first connecting plate in a second direction. Each light guide pillar includes a light guide block and a first bridging arm, and the first bridging arm connects the light guide block and the first connecting plate in the second direction. The light guide block is provided with a mounting cavity. The covering structure is an integral structure, including a light-blocking structure, and adjacent light guide pillars are separated by the light-blocking structure.

[0007] Preferably, the substrate and the covering structure are integrally molded using two-color injection molding; the substrate is made of hard plastic, and the covering structure is made of soft plastic.

[0008] Preferably, the substrate further includes a second connecting plate; in the second direction, the light guide post is disposed between the second connecting plate and the first connecting plate, and the second connecting plate and the light guide block are spaced apart; at least a portion of the light guide post further includes a second bridging arm, in the second direction, the second bridging arm is connected between the second connecting plate and the corresponding light guide block.

[0009] Preferably, in the second direction, the mounting cavity is formed on the end face of the light guide block away from the first bridging arm; in the third direction, the first bridging arm and the second bridging arm are located at both ends of the light guide block, and the mounting cavity and the first bridging arm are located on the same side of the second bridging arm.

[0010] Preferably, the length of the first bridging arm in the first direction, the second direction, and the third direction is 1.5 to 2 mm; and / or, the length of the second bridging arm in the first direction, the second direction, and the third direction is 1.5 to 2 mm; the first direction, the second direction, and the third direction are perpendicular to each other.

[0011] Preferably, the light-blocking structure is disposed between the first connecting plate and the second connecting plate; the light-blocking structure includes a first baffle, a second baffle, and a plurality of third baffles; each of the third baffles is disposed between the first baffle and the second baffle in the second direction and is respectively located between each adjacent light guide block; the first baffle has a connecting groove at one end in the third direction, and the first bridging arm is inserted into the corresponding connecting groove; a notch is opened on the second baffle, and the second bridging arm is inserted into the corresponding notch.

[0012] Preferably, the covering structure further includes a first housing, which covers the substrate at least on a third-direction side and connects to the light-blocking structure at the third-direction end through the interval between adjacent light guide pillars; the first housing has light-transmitting holes corresponding to each of the light guide blocks.

[0013] Preferably, the first housing is further provided with a first connecting hole, and the base is further provided with a second connecting hole corresponding to and communicating with the first connecting hole, and a nut is fixed in the second connecting hole.

[0014] Preferably, it also includes a button; the covering structure is soft rubber; the first housing also includes a pressing part, and the base has a clearance hole in the area near the pressing part, the pressing part has a protrusion, the protrusion extends into the clearance hole and is spaced apart from the hole wall of the clearance hole; along the through direction of the clearance hole, the protrusion and the button are arranged sequentially and fit together.

[0015] A handheld infrared device includes the light guide structure as described above; it also includes a circuit board and a second housing, wherein the circuit board is provided with a plurality of light-emitting elements, each of which extends into a corresponding mounting cavity, and the second housing and the light guide block clamp the circuit board.

[0016] The light guide structure provided by this utility model includes a substrate and a covering structure. The substrate is a light-transmitting component, and the covering structure is an opaque component. The substrate is an integral structure, including a first connecting plate and multiple light guide pillars. Each light guide pillar is arranged sequentially at intervals along a first direction and is located on the same side of the first connecting plate in a second direction. Each light guide pillar includes a light guide block and a first bridging arm, and the first bridging arm connects the light guide block and the first connecting plate in the second direction. An installation cavity is provided on the light guide block. The covering structure is an integral structure, including a light-blocking structure. Adjacent light guide pillars are separated by the light-blocking structure.

[0017] The light guide structure includes a light-transmitting substrate and an opaque covering structure. The light guide block in the substrate has a mounting cavity for accommodating the light-emitting element and can guide light to a selected position or area through the light guide block. In the integrated substrate, the light guide block is connected to the first connecting plate through a corresponding first bridging arm. Since the light path of adjacent light guide blocks on the substrate needs to pass through two first bridging arms and part of the first connecting plate between them, the length and complexity of the light path can be increased, which can increase the light loss between adjacent light guide blocks. Combined with the light-blocking effect of the light-blocking structure, the problem of light leakage between light guide blocks can be effectively reduced or avoided. In addition, while ensuring normal light guiding capability, the substrate and the covering structure are integrated structures, which can reduce the number of parts, thereby reducing the processing or assembly steps of the light guide structure and improving processing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 A cross-sectional view of the light guide post in a specific embodiment of the light guide structure provided by this utility model;

[0020] Figure 2 An axonometric view of the internal structure of a specific embodiment of the light guide structure provided by this utility model;

[0021] Figure 3 An external view of the light-passing hole in a specific embodiment of the light-guiding structure provided by this utility model;

[0022] Figure 4 An axonometric view of the light-blocking structure in a specific embodiment of the light guide structure provided by this utility model;

[0023] Figure 5 This is a first cross-sectional view of the nut in a specific embodiment of the light guide structure provided by this utility model;

[0024] Figure 6 This is a second cross-sectional view of the nut in a specific embodiment of the light guide structure provided by this utility model;

[0025] Figure 7 This is a cross-sectional view of the button area in a specific embodiment of the light guide structure provided by this utility model;

[0026] Figure 8 This is a diagram showing the internal structure of the button in a specific embodiment of the light guide structure provided by this utility model.

[0027] Figure label:

[0028] Covering structure 1, light-blocking structure 11, first baffle 111, second baffle 112, third baffle 113, connecting groove 114, notch 115, first shell 12, light-transmitting hole 121, pressing part 122, limiting ring groove 1221, protrusion 123, first connecting hole 13, first large diameter hole 131, first small diameter hole 132, first stepped surface 133;

[0029] Substrate 2, light guide post 21, light guide block 211, first bridging arm 212, mounting cavity 213, second bridging arm 214, clearance hole 22, second connecting hole 23, first connecting plate 24, second connecting plate 25, third connecting plate 26.

[0030] Second shell 3;

[0031] Circuit board 4, light-emitting element 41, button 42;

[0032] Nut 5;

[0033] First direction X, second direction Y, third direction Z. Detailed Implementation

[0034] 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.

[0035] The core of this utility model is to provide a light guide structure and a handheld infrared device including the above-mentioned light guide structure, and the light guide structure has high processing efficiency.

[0036] For a specific embodiment of the light guide structure provided by this utility model, please refer to the following: Figures 1 to 8 It includes a substrate 2 and a covering structure 1, wherein the substrate 2 is a light-transmitting component and the covering structure 1 is an opaque component.

[0037] The substrate 2 is a one-piece structure, and the covering structure 1 is also a one-piece structure. In some embodiments, the substrate 2 and the covering structure 1 are also one-piece molded structures. Specifically, the substrate 2 and the covering structure 1 can be injection molded as a single piece.

[0038] like Figure 1 and Figure 2 As shown, the substrate 2 includes a first connecting plate 24 and a plurality of light guide pillars 21, for example, four light guide pillars 21. The light guide pillars 21 are arranged sequentially at intervals along the first direction X, and each light guide pillar 21 is located on the same side of the first connecting plate 24 in the second direction Y.

[0039] It should be noted that in this embodiment, the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. In other embodiments, the first direction X, the second direction Y, and the third direction Z may also be in other angular relationships.

[0040] like Figure 1 and Figure 2 As shown, the light guide post 21 includes a light guide block 211 and a first bridging arm 212, and the first bridging arm 212 is connected between the light guide block 211 and the first connecting plate 24 in the second direction Y. The light guide block 211 is provided with a mounting cavity 213 for accommodating a light-emitting element 41, such as an infrared indicator light.

[0041] like Figure 2 As shown, the covering structure 1 includes a light-blocking structure 11, and adjacent light guide columns 21 are separated by the light-blocking structure 11 to block light.

[0042] The light guide structure in this embodiment includes a light-transmitting substrate 2 and an opaque covering structure 1. The light guide block 211 in the substrate 2 has a mounting cavity for accommodating the light-emitting element 41 and can guide light to a selected position or area through the light guide block 211. In the integrated substrate 2, the light guide block 211 is connected to the first connecting plate 24 through the corresponding first bridging arm 212. Since the light path of adjacent light guide blocks 211 on the substrate 2 needs to pass through two first bridging arms 212 and part of the first connecting plate 24 between them, the length and complexity of the light path can be increased, which can increase the light loss between adjacent light guide blocks 211. Combined with the light blocking effect of the light blocking structure 11, the problem of light leakage between light guide blocks 211 can be effectively avoided. In addition, while ensuring normal light guiding capability, the substrate 2 and the covering structure 1 are integrated structures, which can reduce the number of parts, thereby reducing the processing or assembly steps of the light guide structure and improving processing efficiency.

[0043] To further reduce processing difficulty, the substrate 2 and the covering structure 1 are integrally molded using two-color injection molding. In this case, the substrate 2 and the covering structure 1 are integrally injection molded from different materials, which can be directly molded, reducing processing steps and lowering the requirements for the processing technology of the parts, thus reducing the cost of structural components. Of course, in other embodiments, the integral injection molding of the substrate 2 and the covering structure 1 can also be achieved using overmolding or insert injection molding processes; or the connection can be achieved by assembling the covering structure 1 with the substrate 2.

[0044] In some embodiments, the substrate 2 is a rigid adhesive, and the covering structure 1 is a flexible adhesive. In this case, the light-guiding structure can combine the strength of the rigid adhesive with the elasticity, wear resistance, and anti-slip properties of the flexible adhesive, thereby improving the overall performance of the product. For example, the translucent rigid adhesive can be made of materials such as polycarbonate (PC), polymethyl methacrylate (PMMA), or polystyrene (PS), while the opaque flexible adhesive can be made of materials such as thermoplastic elastomer (TPE) or polyvinyl chloride (PVC). Additionally, the substrate 2 can be made of a fully transparent or semi-transparent material.

[0045] In the structure of matrix 2, such as Figure 1 and Figure 2 As shown, to improve structural strength, the substrate 2 also includes a second connecting plate 25, and at least part of the light guide post 21 also includes a second bridging arm 214.

[0046] Specifically, in the second direction Y, the light guide post 21 is disposed between the second connecting plate 25 and the first connecting plate 24, and the second connecting plate 25 and the light guide block 211 are spaced apart. At least a portion of the light guide post 21 includes a second bridging arm 214, which connects the second connecting plate 25 and the corresponding light guide block 211 in the second direction Y. Thus, through the cooperation of the second bridging arm 214 and the second connecting plate 25, the support capacity for the light guide block 211 is improved, and the overall structural strength of the substrate 2 is enhanced.

[0047] In some embodiments, there are at least three light guide pillars 21. In the first direction X, except for the two light guide pillars 21 at both ends, the remaining light guide pillars 21 all include a second bridging arm 214 to ensure the structural strength of each light guide pillar 21 in the middle. For example Figure 2 In the middle, the substrate 2 includes four light guide pillars 21 for matching four light-emitting elements 41. The two middle light guide pillars 21 each include a second bridging arm 214, while the other two second bridging arms 214 do not include a second bridging arm 214.

[0048] In some embodiments, such as Figure 2As shown, the substrate 2 may also include two third connecting plates 26, each connecting plate 24 and the second connecting plate 25, with each light guide post 21 located between the two third connecting plates 26 in the first direction X. The light guide blocks 211 on the two light guide posts 21 at the upper edge of the first direction X can be fixed to the corresponding third connecting plates 26 to enhance the structural strength.

[0049] In some embodiments, such as Figure 1 and Figure 2 As shown, in the second direction Y, the mounting cavity 213 is formed on the end face of the light guide block 211 away from the first bridging arm 212. At this time, the light guide structure can be adapted to the assembly of the circuit board 4 with the light-emitting element 41. The end face of the light guide block 211 with the mounting cavity 213 can position or support the circuit board 4, and the light-emitting element 41 on the circuit board 4 can directly extend into the corresponding mounting cavity 213 after the circuit board 4 is assembled in place, which is convenient for assembly.

[0050] In some embodiments, such as Figure 1 and Figure 2 As shown, the second bridging arm 214 and the mounting cavity 213 are arranged sequentially along the third direction Z, so that the second bridging arm 214 can avoid the circuit board 4 and avoid interference during assembly.

[0051] In some embodiments, such as Figure 1 and Figure 2 As shown, the first bridging arm 212 is located at both ends of the light guide block 211 in the third direction Z. The first bridging arm 212 and the mounting cavity 213 are located on the same side of the second bridging arm 212 in the third direction Z. The positioning or support capability of the circuit board 4 can be improved through the first bridging arm 212. In addition, the two bridging points, the first bridging arm 212 and the second bridging arm 214, are located on opposite sides of the light surface of the light guide block 211 in the second direction Y and the third direction Z, which facilitates the manufacture of injection molding molds.

[0052] In some embodiments, such as Figure 1 and Figure 2 As shown, the lengths of the first bridging arm 212 in the first direction X (L1), the second direction Y (H1), and the third direction Z (W1) are all within the range of 1.5 to 2 mm; the lengths of the second bridging arm 214 in the first direction X (L2), the second direction Y (H2), and the third direction Z (W2) are all within the range of 1.5 to 2 mm. By limiting these dimensions, the excessive size of the first bridging arm 212 and the second bridging arm 214 can be avoided, which would reduce the light guiding capacity at these locations. This further balances the issues of light leakage and crosstalk, as well as the requirements of the molding process, ensuring the strength of the molding die.

[0053] In some embodiments, such as Figure 2As shown, the first bridging arm 212 and the second bridging arm 214 are connected to the two end faces of the light guide block 211 in the second direction Y. In the first direction X, the size of the first bridging arm 212 and the second bridging arm 214 is smaller than that of the light guide block 211, and they are centrally connected to the light guide block 211. This can improve the symmetry of the light guide post 21 structure, ensure structural stability, and ensure that the mounting cavity 213 has a sufficiently large accommodating space.

[0054] In the encapsulation structure, to match the structure of the light-guiding portion of the substrate 2, such as... Figures 2 to 4 As shown, the light-blocking structure 11 is disposed between the first connecting plate 24 and the second connecting plate 25, which can improve the light-blocking performance of the light guide block 211 and the first connecting plate 24 and the second connecting plate 25.

[0055] Specifically, such as Figure 2 As shown, the light-blocking structure 11 includes a first baffle 111, a second baffle 112, and multiple third baffles 113. Each third baffle 113 is disposed between the first baffle 111 and the second baffle 112 in the second direction Y. At this time, in the second direction Y, the first baffle 111 is located between the light guide block 211 and the first connecting plate 24, and the second baffle 112 is located between the light guide block 211 and the second connecting plate 25. Each third baffle 113 is located between adjacent light guide blocks 211. For example, three third baffles 113 are respectively disposed at three intervals of four light guide blocks 211, thereby achieving light blocking between the light guide blocks 211 in the first direction X.

[0056] In some embodiments, such as Figure 2 and Figure 4 As shown, the first baffle 111 has a connecting groove 114 at one end in the third direction Z. The first bridging arm 212 is inserted into the corresponding connecting groove 114. Specifically, the connecting groove 114 is a U-shaped groove and is fastened to the first bridging arm 212 along the third direction X. The second baffle 112 has a notch 115, and the second bridging arm 214 is inserted into the corresponding notch 115. At this time, the connecting groove 114 and the notch 115 can respectively avoid the first bridging arm 212 and the second bridging arm 214, and can ensure the connection strength between the substrate 2 and the light-blocking structure 11.

[0057] In some embodiments, to improve the protection of the substrate 2, such as Figures 1 to 4 As shown, the covering structure 1 also includes a first housing 12, which can serve as part of the device housing. The first housing 12 covers the base 2 at least on one side in the third direction Z. Figure 3 and Figure 4 As shown, the first housing 12 is joined at one end in the third direction Z by the gap between adjacent light guide posts 21, ensuring the integrity of the covering structure 1. Figure 3As shown, the first housing 12 has light-transmitting holes 121 corresponding to each light guide block 211 to prevent the first housing 12 from affecting the normal output of light. Specifically, the light-transmitting holes 121 are arranged sequentially and disconnected along the first direction X, and in the third direction Z, each light-transmitting hole 121 is aligned with each light guide block 211. At this time, the light emitted by the light-emitting element 41 enters the mounting cavity 213 and is guided by the light guide block 211 to the corresponding light-transmitting hole 121.

[0058] It should be noted that the area on the substrate 2 where the light guide post 21, the first connecting plate 24, and the second connecting plate 25 are set can be a local area of ​​the substrate 2; the first shell 12 can cover the substrate 2 and the light blocking structure 11 on one side, or it can cover the substrate 2 on multiple sides to achieve a semi-enclosure of the substrate 2. For example, the first shell 12 can cover the substrate 2 on both sides in the first direction X, one side in the second direction Y, and both sides in the third direction Z. In addition, the remaining side in the second direction Y can be covered by the second shell 3, so that the first shell 12 and the second shell 3 constitute the outer shell of the device. The second shell 3 can also be made of soft rubber.

[0059] In some embodiments, such as Figure 1 As shown, one end of the light-transmitting hole 121 in the third direction Z is covered by the substrate 2, mainly by the light guide block 211, to form a blind hole structure. For example, the depth W3 of the light-transmitting hole 121 in the third direction Z is not less than 0.7 mm to ensure the structural strength of the first housing 12 at the light-transmitting hole 121.

[0060] In some embodiments, for the convenience of connecting other external devices, such as Figure 5 and Figure 6 As shown, a first connecting hole 13 is also provided through the first housing 12, and a second connecting hole 23 corresponding to and communicating with the first connecting hole 13 is also provided on the base 2. A nut 5 is fixed in the second connecting hole 23, and the nut 5 can be threaded with the studs on other external devices.

[0061] In some embodiments, such as Figure 6 As shown, the first connecting hole 13 can be a stepped hole, which allows for partial insertion between the base 2 and the first connecting hole 13, improving the connection strength. Specifically, along the through direction of the first connecting hole 13 (e.g., the first direction X, the second direction Y, or the third direction Z) towards the base 2 ( Figure 6(In the example orientation, to the right), it includes a first small-diameter hole 132 and a first large-diameter hole 131. A first stepped surface 133 facing the base 2 is formed between the first small-diameter hole 132 and the first large-diameter hole 131. A portion of the protruding structure of the base 2 is inserted into the first large-diameter hole 131 and abuts against the first stepped surface 133. Exemplarily, the depth H4 of the first small-diameter hole 132 in its penetrating direction is not less than 0.7 mm to ensure the structural strength of the first housing 12 at the first connecting hole 13 and avoid excessively thin walls.

[0062] In some embodiments, to facilitate pressing and triggering the button 42 on the circuit board 4, such as Figure 7 and Figure 8 As shown, the first housing 12 also includes a pressing part 122. The first housing 12 is made of soft rubber, which has a certain elasticity. The trigger structure of the button 42 is directly formed using the first housing 12.

[0063] In some embodiments, such as Figure 7 and Figure 8 As shown, a clearance hole 22 is provided on the base 2 near the pressing part 122. The pressing part 122 has a protrusion 123 that extends into the clearance hole 22, and the protrusion 123 is spaced apart from the hole wall of the clearance hole 22. Along the through direction of the clearance hole 22 (e.g., the first direction X, the second direction Y, or the third direction Z), the protrusion 123 and the button 42 are arranged sequentially and fitted together, so that by pressing the pressing part 122 on the first housing 12 along the through direction of the clearance hole 22, the button 42 can be pressed through the pressing part 122. At this time, the clearance hole 22 provides elastic space, ensuring that the pressing part 122 can be pressed and deformed smoothly, and avoiding the soft rubber from bearing the shear force during pressing, thus enhancing the product life.

[0064] In some embodiments, for easy distinction of the pressing part 122, such as Figure 7 As shown, a limiting annular groove 1221 is provided on the surface of the first housing 12 away from the base 2, and the portion enclosed within the limiting annular groove 1221 is the pressing part 122. Exemplarily, the projection of the outer groove wall of the limiting annular groove 1221 in the through direction of the clearance hole 22 is located inside the hole wall of the clearance hole 22. For example, the distance W5 between the outer groove wall of the limiting annular groove 1221 and the hole wall of the clearance hole 22 is greater than 0.5 mm, which can ensure that the pressing part 122 can be pressed into the clearance hole 22.

[0065] It should be noted that, depending on actual needs, the first connecting hole 13 and the pressing part 122 can be provided on the wall surface of the base 2 on the first housing 12 on the side of the base 2 in the first direction X, the second direction Y, or the third direction Z.

[0066] In this embodiment, the light guide structure, the substrate 2 and the covering structure 1 are a two-color product made of hard and soft plastic. The hard plastic is made of transparent material, and the part near the light-emitting element 41 can be directly used as a light guide block 211 for light guiding without the need for a separate light guide component. This reduces the manufacturing difficulty of the two-color product with a light guide pillar structure, allowing for direct mold forming. The processing requirements for the parts are also relatively low, reducing the cost of structural components and expanding the application scenarios. It can be adapted to the light guiding of indicator lights in infrared products with low light transmittance requirements. In addition, the covering structure 1 is made of soft plastic, which can partially or completely cover the product's exterior surface, providing good protection.

[0067] In addition to the aforementioned light guide structure, this utility model also provides a handheld infrared device, which includes a light guide structure. Specifically, the light guide structure can be any of the light guide structures provided in the above embodiments, and the beneficial effects can be referred to the respective embodiments above. Optionally, the handheld infrared device can be a handheld infrared thermometer, a handheld infrared spectrometer, a handheld infrared thermal imager, a handheld infrared night vision device, etc. Of course, in other embodiments, the light guide structure can also be applied to other devices with light guiding requirements, such as being located at the indicator light of an electronic device.

[0068] like Figure 1 and Figure 7 As shown, the handheld infrared device also includes a circuit board 4 and a second housing 3. The second housing 3 can be connected with the first housing 12 to form a device shell. The circuit board 4 is built into the device shell and is equipped with the required functional components to realize the corresponding control functions.

[0069] like Figure 1 As shown, the circuit board 4 is provided with multiple light-emitting elements 41, specifically LEDs, infrared indicator lights, etc. Each light-emitting element 41 extends into its respective mounting cavity 213, and the second housing 3 and the light guide block 211 clamp the circuit board 4.

[0070] During installation, the circuit board 4 can be inserted into the first housing 12 along the second direction Y. The circuit board 4 is supported by the light guide block 211. At the same time, the light-emitting element 41 extends into the corresponding mounting cavity 213. Then, the second housing 3 is covered on the second direction Y. While the second housing 3 is connected to the first housing 12, the second housing 3 and the light guide block 211 clamp the circuit board 4.

[0071] like Figure 7 As shown, the circuit board 4 is also provided with a button 42, which can cooperate with the pressing part 122 on the first housing 12 so that the button 42 can be pressed and triggered by pressing the pressing part 122.

[0072] It should be noted that when an element is referred to as "fixing" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as "connecting" another element, it can be directly connected to the other element or there may be an intervening element. Furthermore, in the description of this utility model, unless otherwise stated, "multiple," "multiple roots," and "multiple groups" mean two or more.

[0073] The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0074] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0075] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] The light-guiding structure and handheld infrared device provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A light guiding structure, characterized in that, It includes a substrate (2) and a covering structure (1), wherein the substrate (2) is a light-transmitting component and the covering structure (1) is an opaque component; The substrate (2) is an integral structure, including a first connecting plate (24) and multiple light guide pillars (21). Each light guide pillar (21) is arranged sequentially at intervals along the first direction (X) and is located on the same side of the first connecting plate (24) in the second direction (Y). The light guide post (21) includes a light guide block (211) and a first bridging arm (212), and the first bridging arm (212) is connected between the light guide block (211) and the first connecting plate (24) in the second direction (Y). The light guide block (211) is provided with a mounting cavity (213). The covering structure (1) is an integral structure, including a light-blocking structure (11), and adjacent light guide columns (21) are separated by the light-blocking structure (11).

2. The light guide structure according to claim 1, characterized in that, The substrate (2) and the covering structure (1) are integrally molded by two-color injection molding; the substrate (2) is hard plastic and the covering structure (1) is soft plastic.

3. The light guide structure according to claim 1 or 2, characterized in that, The substrate (2) also includes a second connecting plate (25); In the second direction (Y), the light guide post (21) is disposed between the second connecting plate (25) and the first connecting plate (24), and the second connecting plate (25) and the light guide block (211) are spaced apart; At least part of the light guide post (21) also includes a second bridging arm (214) which connects the second connecting plate (25) and the corresponding light guide block (211) in the second direction (Y).

4. The light guide structure according to claim 3, characterized in that, In the second direction (Y), the mounting cavity (213) is formed on the end face of the light guide block (211) away from the first bridging arm (212); In the third direction (Z), the first bridging arm (212) and the second bridging arm (214) are located at both ends of the light guide block (211), and the mounting cavity (213) and the first bridging arm (212) are located on the same side of the second bridging arm (214).

5. The light guide structure according to claim 3, characterized in that, The length of the first bridging arm (212) in the first direction (X), the second direction (Y), and the third direction (Z) is 1.5 to 2 mm; and / or, the length of the second bridging arm (214) in the first direction (X), the second direction (Y), and the third direction (Z) is 1.5 to 2 mm. The first direction (X), the second direction (Y), and the third direction (Z) are perpendicular to each other.

6. The light guide structure according to claim 3, characterized in that, The light-blocking structure (11) is disposed between the first connecting plate (24) and the second connecting plate (25); The light-blocking structure (11) includes a first baffle (111), a second baffle (112), and a plurality of third baffles (113); each of the third baffles (113) is disposed between the first baffle (111) and the second baffle (112) in the second direction (Y) and is located between each of the adjacent light guide blocks (211); the first baffle (111) has a connecting groove (114) at one end in the third direction (Z), and the first bridging arm (212) is inserted into the corresponding connecting groove (114); the second baffle (112) has a notch (115), and the second bridging arm (214) is inserted into the corresponding notch (115).

7. The light guide structure according to claim 1 or 2, characterized in that, The covering structure (1) further includes a first housing (12), which covers the substrate (2) at least on one side in the third direction (Z) and connects to the light-blocking structure (11) at one end in the third direction (Z) through the interval between adjacent light guides (21); the first housing (12) is provided with light-transmitting holes (121) corresponding to each light guide block (211).

8. The light guide structure according to claim 7, characterized in that, The first housing (12) is also provided with a first connecting hole (13), and the base (2) is also provided with a second connecting hole (23) corresponding to and communicating with the first connecting hole (13), and a nut (5) is fixed in the second connecting hole (23).

9. The light guide structure according to claim 7, characterized in that, It also includes a button (42); the covering structure (1) is made of soft rubber; the first housing (12) also includes a pressing part (122), and the base (2) is provided with a clearance hole (22) in the area near the pressing part (122). The pressing part (122) is provided with a protrusion (123), the protrusion (123) extends into the clearance hole (22) and is spaced apart from the hole wall of the clearance hole (22); along the through direction of the clearance hole (22), the protrusion (123) and the button (42) are arranged in sequence and fit together.

10. A handheld infrared device, characterized in that, The light guide structure includes any one of claims 1 to 9; it also includes a circuit board (4) and a second housing (3), wherein the circuit board (4) is provided with a plurality of light-emitting elements (41), each of the light-emitting elements (41) extending into each of the mounting cavities (213), and the second housing (3) and the light guide block (211) clamp the circuit board (4).

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