Light source device and detection equipment

Abstract

The utility model relates to the technical field of light sources, and discloses a light source device and detection equipment, and the light source device comprises a circuit board which is in a flat plate shape, and a plurality of columns of lamp beads are arranged on the bottom surface of the circuit board at intervals; the light guide assembly comprises a plurality of light guide plates which are laminated and attached, and the plurality of light guide plates correspond to the plurality of columns of lamp beads in a one-to-one mode; the top end face of one light guide plate right faces the corresponding row of lamp beads, and the bottom end faces, away from the circuit board, of the multiple light guide assemblies are combined to form an inwards-concave arc-shaped light emitting face. According to the light source device and the detection equipment, light can illuminate a workpiece from more directions while the circuit board is kept in a flat plate shape, and the illumination effect on the workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of light sources, and in particular to a light source device and a detection device. Background Art

[0002] The light source device includes a circuit board and lamp beads installed on the circuit board. In order to provide a better lighting effect for the workpiece, there are two ways to improve the existing light source device. One of them is to set the circuit board with an arc, and the lamp beads are installed on the concave arc surface. The light-emitting surface is changed from a flat surface to a curved surface, so that light can be emitted to the workpiece from more directions; the other is to design a diffuser plate, and the diffuser plate is provided with a flat circuit board. The light emitted by the lamp beads passes through the diffuser plate and then shines on the workpiece, thereby improving the uniformity of the light. Both of the above methods can provide better lighting effects, but in the first improvement method, the circuit board is bent into an arc, which is prone to the problem of circuit board breakage, and the installation of the lamp beads is also more complicated.

[0003] In view of this, it is necessary to design a light source device and a detection device that can illuminate the workpiece from more directions while keeping the circuit board in a flat shape, thereby improving the lighting effect on the workpiece.

[0004] The above information is presented as background information only to assist with understanding the present disclosure and no determination or admission is made as to whether any of the above may be used as prior art with respect to the present disclosure. Utility Model Content

[0005] The utility model provides a light source device and a detection device, which can enable light to illuminate a workpiece from more directions while keeping a circuit board in a flat shape, thereby improving the lighting effect on the workpiece.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A light source device, comprising:

[0008] The circuit board is in the shape of a flat plate, and a plurality of rows of lamp beads are arranged at intervals on the bottom surface of the circuit board;

[0009] The light guide assembly comprises a plurality of stacked light guide plates, wherein the plurality of light guide plates correspond to a plurality of columns of lamp beads one by one; the top end surface of a light guide plate faces a column of lamp beads, and the bottom end surfaces of the plurality of light guide assemblies away from the circuit board are combined to form a concave arc-shaped light-emitting surface.

[0010] Optionally, the light source device further comprises a heat sink, the circuit board is mounted on the heat sink, and the top surface of the circuit board is in contact with the heat sink;

[0011] A heat dissipation gap is provided between the lamp bead and the light guide plate.

[0012] Optionally, the arc-shaped light-emitting surface is a sandblasted surface.

[0013] Optionally, a diffuse reflection coating is coated on the arc-shaped light-emitting surface.

[0014] Optionally, top surfaces of two adjacent light guide plates are flush with each other;

[0015] Each of the light guide plates is provided with a through mounting hole, and all the corresponding mounting holes form a through assembly hole, wherein studs are inserted into the assembly holes, and nuts are threadedly connected at both ends of the studs to tighten the two ends of the light guide assembly.

[0016] Optionally, a projection of the stud along the extension direction of the light guide plate is separated from a projection of the circuit board along the extension direction of the light guide plate.

[0017] Optionally, an elastic buffer gasket is arranged between the nut and the light guide plate.

[0018] Optionally, among two adjacent light guide plates, one of the light guide plates is provided with a sliding groove, and the other light guide plate is provided with a strip-shaped protrusion, and the strip-shaped protrusion is installed in the sliding groove;

[0019] The groove wall of the sliding groove and the side surface of the strip-shaped protrusion fit each other.

[0020] Optionally, the light guide plate has a plate surface for bonding to another light guide plate, and the plate surface is fully coated with a light-isolating coating.

[0021] A detection device comprises the light source device as described in any one of the above items.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The light source device and detection equipment provided by the utility model are provided with a light guide component, and a plurality of light guide plates and a plurality of rows of lamp beads correspond one to one, so that the light emitted by each row of lamp beads can be better guided to the bottom end, and the light is emitted from the arc-shaped light-emitting surface to the workpiece, which can better illuminate the workpiece located at the bottom end of the light guide component, and the circuit board does not need to be bent into an arc.

[0024] The present invention has other characteristics and advantages, which will be apparent from the accompanying drawings and subsequent specific embodiments incorporated herein, or will be described in detail in the accompanying drawings and subsequent specific embodiments incorporated herein, which together are used to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the installation structure of the light source device provided in an embodiment of the utility model;

[0027] Figure 2 It is a side view schematic diagram of a light source device provided by an embodiment of the utility model.

[0028] Figure numerals: 1, circuit board; 101, heat dissipation gap; 2, lamp bead; 3, light guide assembly; 301, arc-shaped light-emitting surface; 3001, sliding groove; 3002, strip-shaped protrusion; 31, light guide plate; 311, assembly hole; 32, stud; 33, nut; 34, elastic buffer gasket; 4, heat dissipation plate; 5, light-isolating coating; 100, workpiece. DETAILED DESCRIPTION

[0029] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0030] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0031] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0032] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0033] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0034] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0035] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0036] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0037] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] Embodiment 1

[0039] In view of the defects of the existing light source device, the applicant has actively conducted research and innovation based on many years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theory, in the hope of creating a technology that can solve the defects in the existing technology and make the light source device more practical. After continuous research and design, and repeated trial production and improvement, the present utility model with real practical value was finally created.

[0040] Please refer to Figure 1 to Figure 2 The embodiment of the utility model provides a light source device, which can better illuminate the surface of the workpiece 100 without bending the circuit board 1.

[0041] The light source device includes: a circuit board 1, which is in a flat plate shape, and a plurality of rows of lamp beads 2 are arranged at intervals on the bottom surface of the circuit board 1; a light guide component 3, including a plurality of stacked and bonded light guide plates 31, and the plurality of light guide plates 31 correspond to the plurality of rows of lamp beads 2 one by one; the top end surface of a light guide plate 31 faces a row of lamp beads 2, and a plurality of light guide components 3 are combined away from the bottom end surface of the circuit board 1 to form a concave arc-shaped light-emitting surface 301.

[0042] Specifically, the light emitted by a row of lamp beads 2 enters the top of the light guide plate 31, then transmits downward along the light guide plate 31 and is emitted from the arc-shaped light-emitting surface 301 toward the workpiece 100. The arc-shaped light-emitting surface 301 can change the refraction direction of the light, so that the light can be emitted from more directions to the workpiece 100, so that the top surface and the surrounding surface of the workpiece 100 can be well illuminated. In this embodiment, the light can illuminate the workpiece from the arc-shaped light-emitting surface 301, which is equivalent to using an arc-shaped light-emitting lamp board to illuminate the workpiece, which effectively improves the lighting effect on the workpiece while keeping the circuit board 1 in a flat shape.

[0043] Preferably, the arc-shaped light-emitting surface 301 is a sandblasted surface. The sandblasted surface can scatter light, making the light irradiated on the workpiece 100 more uniform, further improving the lighting effect on the workpiece 100, and facilitating the detection of photographing the workpiece 100.

[0044] Preferably, a diffuse reflection coating is coated on the arc-shaped light-emitting surface 301 , that is, the diffuse reflection coating scatters light, so that the light irradiated on the workpiece 100 is more uniform, further improving the lighting effect on the workpiece 100 .

[0045] Optionally, the light source device further includes a heat sink 4, the circuit board 1 is mounted on the heat sink 4, and the top surface of the circuit board 1 is attached to the heat sink 4; there is a heat dissipation gap 101 between the lamp bead 2 and the light guide plate 31. Specifically, the circuit board 1 is in a flat plate shape, the bonding effect between the circuit board 1 and the heat sink 4 is better, the heat conduction effect is better, the heat dissipation effect of the circuit board 1 is improved, and the heat dissipation gap 101 can effectively prevent the lamp bead 2 from overheating.

[0046] Optionally, the top surfaces of two adjacent light guide plates 31 are flush with each other. Figure 1 As shown, the light guiding effect can be improved, and more light can be injected into the light guide plate 31. Each light guide plate 31 is provided with a through mounting hole, and all corresponding mounting holes form a through assembly hole 311, and a stud 32 is inserted into the assembly hole 311, and nuts 33 are threadedly connected at both ends of the stud 32 to press the two ends of the light guide component 3. The nuts 33 are tightened to keep each light guide plate 31 in a stacked and fitted state. It should also be noted that when the number of light guide plates 31 changes, the position of the nuts 33 can be adjusted to clamp all the light guide plates 31.

[0047] Optionally, the projection of the stud 32 along the extension direction of the light guide plate 31 is separated from the projection of the circuit board 1 along the extension direction of the light guide plate 31 to prevent the stud 32 from blocking the light in the light guide plate 31 and affecting the actual effect of illuminating the workpiece 100 .

[0048] Optionally, an elastic buffer gasket 34 is provided between the nut 33 and the light guide plate 31 to avoid crushing the light guide plate 31 .

[0049] Optionally, of the two adjacent light guide plates 31, one light guide plate 31 is provided with a sliding groove 3001, and the other light guide plate 31 is provided with a strip protrusion 3002, and the strip protrusion 3002 is installed in the sliding groove 3001; the groove wall of the sliding groove 3001 and the side surface of the strip protrusion 3002 are mutually fitted. Specifically, in this way, the mounting holes can be better aligned, and the situation that the two adjacent light guide plates 31 slide along the direction perpendicular to the sliding groove 3001 is avoided, and the difficulty of assembly is further reduced.

[0050] Optionally, the light guide plate 31 has a plate surface for bonding with another light guide plate 31, and the plate surface is fully coated with a light-isolating coating 5. That is, the amount of light emitted from the bottom end of each light guide plate 31 is substantially equal, and with the sandblasted surface or diffuse reflection coating, the light intensity received by each area of ​​the workpiece 100 can be more uniform, avoiding the problem of poor lighting effect of the workpiece 100 due to cross-light between the light guide plates 31.

[0051] Embodiment 2

[0052] A detection device includes the light source device as described in the first embodiment.

[0053] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A light source device, characterized in that: include: The circuit board (1) is in the shape of a flat plate, and a plurality of rows of lamp beads (2) are arranged at intervals on the bottom surface of the circuit board (1); The light guide assembly (3) comprises a plurality of light guide plates (31) laminated together, wherein the plurality of light guide plates (31) correspond to a plurality of rows of lamp beads (2) one by one; the top end surface of a light guide plate (31) faces a row of lamp beads (2), and the bottom end surfaces of the plurality of light guide assemblies (3) away from the circuit board (1) are combined to form an inwardly concave arc-shaped light emitting surface (301).

2. The light source device according to claim 1, characterized in that: It also comprises a heat sink (4), the circuit board (1) being mounted on the heat sink (4), and the top surface of the circuit board (1) being in contact with the heat sink (4); A heat dissipation gap (101) is provided between the lamp bead (2) and the light guide plate (31).

3. The light source device according to claim 1, characterized in that: The arc-shaped light-emitting surface (301) is a sandblasted surface.

4. The light source device according to claim 1, characterized in that: The arc-shaped light-emitting surface (301) is coated with a diffuse reflection coating.

5. The light source device according to claim 1, characterized in that: The top surfaces of two adjacent light guide plates (31) are flush with each other; Each of the light guide plates (31) is provided with a through mounting hole, and all corresponding mounting holes form a through assembly hole (311), a stud (32) is inserted into the assembly hole (311), and nuts (33) are threadedly connected at both ends of the stud (32) to tighten the two ends of the light guide assembly (3).

6. The light source device according to claim 5, characterized in that: The projection of the stud (32) along the extension direction of the light guide plate (31) is separated from the projection of the circuit board (1) along the extension direction of the light guide plate (31).

7. The light source device according to claim 5, characterized in that: An elastic buffer gasket (34) is provided between the nut (33) and the light guide plate (31).

8. The light source device according to claim 5, characterized in that: Among two adjacent light guide plates (31), one of the light guide plates (31) is provided with a sliding groove (3001), and the other light guide plate (31) is provided with a strip-shaped protrusion (3002), and the strip-shaped protrusion (3002) is installed in the sliding groove (3001); The groove wall of the sliding groove (3001) and the side surface of the strip-shaped protrusion (3002) fit each other.

9. The light source device according to claim 1, characterized in that: The light guide plate (31) has a plate surface for bonding to another light guide plate (31), and the plate surface is fully coated with a light-isolating coating (5).

10. A detection device, characterized in that: The invention comprises a light source device as claimed in any one of claims 1 to 7.

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