Arched light source device and detection device

Abstract

The utility model relates to the technical field of light source structures, and discloses an arched light source device and a detection device. The reflecting film is attached to the outer arc surface of the arc-shaped light guide plate; the diffusion film is attached to the inner arc surface of the arc-shaped light guide plate; the lamp panel is located on one side of the bottom of the arc-shaped light guide plate, light rays are emitted to the arc-shaped light guide plate from the position between the reflecting film and the diffusion film, and the light rays are reflected by the reflecting film and then penetrate through the arc-shaped light guide plate and the diffusion film to be emitted to the surface of a workpiece on one side of the bottom. According to the arched light source device, the assembly efficiency of the arched light source device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of light source structure technology, and in particular to an arched light source device and a detection device. Background Technology

[0002] Visual inspection uses machines to replace human eyes for measurement and judgment. It involves converting the captured target into an image signal using an image acquisition device, transmitting it to a dedicated image processing system, and then converting it into a digital signal based on pixel distribution, brightness, color, and other information. The image system performs various calculations on these signals to extract the target's features, and then controls the on-site equipment based on the judgment results. Visual inspection is widely used for detecting defects in various industrial products. The light source is a crucial component of visual inspection.

[0003] In visual inspection, arched light sources may be used as the inspection light source. However, existing arched light sources generally consist of a housing and a light source base, both of which are designed in an arched shape. To ensure that the product under test receives more uniform and clearer illumination within the arch area, LEDs are embedded in the entire arched surface of the light source base, concentrating the light within the arch. Therefore, the arched light source device needs to have multiple rows of LEDs on the arched surface, which makes the assembly of the LEDs relatively complicated and hinders the improvement of the assembly efficiency of the arched light source device.

[0004] Therefore, it is necessary to design an arched light source device and a detection device, which can help improve the assembly efficiency of the arched light source device.

[0005] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0006] This invention provides an arched light source device and a detection device, which can help improve the assembly efficiency of the arched light source device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An arched light source device, comprising:

[0009] Arc-shaped light guide plate;

[0010] A reflective film is attached to the outer arc surface of the arc-shaped light guide plate;

[0011] A diffusion film is attached to the inner arc surface of the arc-shaped light guide plate;

[0012] The light panel is located on the bottom side of the arc-shaped light guide plate. Light rays are emitted from between the reflective film and the diffuser film into the arc-shaped light guide plate. After being reflected by the reflective film, the light rays pass through the arc-shaped light guide plate and the diffuser film and are directed to the surface of the workpiece on the bottom side.

[0013] Optionally, the arched light source device further includes a heat dissipation frame, on which the arc-shaped light guide plate, the reflective film, and the diffuser film are all mounted; the lamp plate is mounted on the heat dissipation frame.

[0014] The light panel is arranged in two rows, one row of which faces one side of the arc-shaped light guide plate, and the other row of which faces the other side of the arc-shaped light guide plate.

[0015] Optionally, a heat dissipation space is formed between the heat dissipation frame and the reflective film, and a heat dissipation fan is provided on the top of the heat dissipation frame facing the heat dissipation space.

[0016] The arc-shaped light guide plate is symmetrical about a set symmetrical surface, and a plurality of cooling fans are arranged in two columns, with the two columns of cooling fans being symmetrical about the set symmetrical surface.

[0017] Optionally, the heat dissipation frame has a top plate;

[0018] The cooling fan is installed on the bottom side of the top plate, and there is a gap between the top plate and the reflective film that allows airflow to pass through.

[0019] Optionally, one column of cooling fans is a blower fan that blows cooling gas into the heat dissipation space, and the other column of cooling fans is an exhaust fan that exhausts gas from the heat dissipation space.

[0020] Optionally, exhaust vents are provided at both opposite ends of the heat dissipation frame.

[0021] Optionally, the arc-shaped light guide plate is provided with a detection hole for the camera to take pictures of the workpiece;

[0022] Both the reflective film and the diffuser film avoid the detection hole, and an observation port is provided on the top plate corresponding to the detection hole.

[0023] Optionally, the heat dissipation frame further includes a vertical plate portion, on which heat dissipation fins are arranged from top to bottom;

[0024] The closer the heat sink is to the top plate, the longer it extends towards the reflective film.

[0025] Optionally, the top plate is provided with a group of ventilation holes, and a cooling fan is installed on one side of the bottom of each group of ventilation holes.

[0026] A detection device includes an arched light source device as described in any of the preceding claims.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The arched light source device and detection device provided by this utility model have a reflective film on the outer arc surface of the arc-shaped light guide plate and a diffusion film on the inner arc surface of the arc-shaped light guide plate. The light from the lamp plate enters the arc-shaped light guide plate between the reflective film and the diffusion film. After being reflected by the reflective film, the light passes through the arc-shaped light guide plate and the diffusion film and is directed onto the workpiece on the bottom side of the arc-shaped light guide plate. The arched light source device in this embodiment has a simpler structure and is easier to assemble, which can help improve the assembly efficiency of the arched light source device.

[0029] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0030] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a top view schematic diagram of the arched light source device provided in this embodiment of the utility model;

[0032] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure of the central arched light source device;

[0033] Figure 3 This is an exploded view of the arched light source device provided in this embodiment of the utility model;

[0034] Figure 4 This is a three-dimensional schematic diagram of the arched light source device provided in this embodiment of the utility model;

[0035] Figure 5 This is a three-dimensional structural diagram of an arched light source device with an exhaust vent provided in an embodiment of this utility model.

[0036] Reference numerals: 1. Arc-shaped light guide plate; 101. Detection hole; 2. Reflective film; 3. Diffuser film; 4. Lamp plate; 5. Heat dissipation frame; 501. Heat dissipation space; 502. Observation port; 503. Ventilation hole group; 51. Top plate; 52. Vertical plate; 521. Heat sink; 6. Cooling fan; 100. Setting symmetry plane; 200. Interval. Detailed Implementation

[0037] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0038] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0039] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0040] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0041] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0042] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0043] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0044] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0045] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0046] Example 1

[0047] In view of the aforementioned defects in existing arched light source devices, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in conjunction with the application of theoretical principles, actively conducted research and innovation in order to create a technology that could solve the defects in the existing technology and make the arched light source device more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0048] Please refer to Figures 1 to 4 This utility model embodiment provides an arched light source device, including an arc-shaped light guide plate 1, a reflective film 2, a diffusion film 3, and a lamp plate 4.

[0049] The arc-shaped light guide plate 1 serves as a light guide and provides support for the reflective film 2 and the diffuser film 3. The reflective film 2 is attached to the outer arc surface of the arc-shaped light guide plate 1, and the diffuser film 3 is attached to the inner arc surface of the arc-shaped light guide plate 1. The lamp plate 4 is located on the bottom side of the arc-shaped light guide plate 1, and light is emitted from between the reflective film 2 and the diffuser film 3 into the arc-shaped light guide plate 1. After being reflected by the reflective film 2, the light passes through the arc-shaped light guide plate 1 and the diffuser film 3 and is directed to the surface of the workpiece on the bottom side.

[0050] In this embodiment, the arched light source device has a reflective film 2 on the outer arc surface of the arc-shaped light guide plate 1 and a diffusion film 3 on the inner arc surface of the arc-shaped light guide plate 1. The light from the lamp plate 4 enters the arc-shaped light guide plate 1 between the reflective film 2 and the diffusion film 3. After being reflected by the reflective film 2, the light passes through the arc-shaped light guide plate 1 and the diffusion film 3 and is directed onto the workpiece on the bottom side of the arc-shaped light guide plate 1. In this embodiment, the arched light source device has a simpler structure and is easier to assemble. It does not require multiple lamp beads to be arranged on the arc-shaped light source base, which significantly improves the assembly efficiency of the arched light source device.

[0051] Optionally, the arched light source device also includes a heat dissipation frame 5, on which the arc-shaped light guide plate 1, the reflective film 2, and the diffusion film 3 are all mounted; the lamp plate 4 is mounted on the heat dissipation frame 5; the lamp plate 4 is arranged in two rows, one row of lamp plates 4 facing one side of the arc-shaped light guide plate 1, and the other row of lamp plates 4 facing the other side of the arc-shaped light guide plate 1.

[0052] The heat dissipation frame 5 serves two purposes: heat dissipation and supporting the curved light guide plate 1, the reflective film 2, and the diffuser film 3. For example... Figure 2 As shown, the light from the two light panels 4 enters from the two side edges of the arc-shaped light guide plate 1, and then exits from the diffusion film 3 after being reflected by the reflective film 2, illuminating the workpiece located between the two light panels 4.

[0053] Optionally, a heat dissipation space 501 is formed between the heat dissipation frame 5 and the reflective film 2. A cooling fan 6 is provided on the top of the heat dissipation frame 5, facing the heat dissipation space 501. The arc-shaped light guide plate 1 is symmetrical about a set symmetry plane 100, and several cooling fans 6 are arranged in two rows, with the two rows of cooling fans 6 symmetrically arranged about the set symmetry plane 100. The cooling fans 6 are used to inject cooling airflow or extract hot airflow from the heat dissipation space, thereby preventing the temperature of the lamp panel 4 from becoming too high. It should also be noted that the symmetrical arrangement of the two rows of cooling fans 6 about the set symmetry plane 100 can achieve a better cooling effect for the two lamp panels 4. Figure 2 As shown, there is an air gap between the two ends of the lamp board 4 and the arc-shaped light guide plate 1. Whether the cooling fan 6 is drawing in or drawing out air, the airflow will flow through the air gap, thereby cooling the lamp board 4.

[0054] Optionally, the heat dissipation frame 5 has a top plate 51; the heat dissipation fan 6 is mounted on the bottom side of the top plate 51, and there is a gap 200 between the top plate 51 and the reflective film 2 for airflow. Specifically, the heat dissipation space 501 can be divided into a left space and a right space, and the left space is connected to the right space through the gap 200.

[0055] Optionally, one row of cooling fans 6 is a blower fan that blows cooling gas into the heat dissipation space 501, and the other row of cooling fans 6 is an exhaust fan that exhausts gas from the heat dissipation space 501. Specifically, the presence of the interval 200 allows the left and right spaces, which have higher temperatures, to exchange heat better, resulting in a more balanced temperature throughout the heat dissipation space 501.

[0056] Optionally, such as Figure 5 The heat dissipation frame 5 has exhaust vents at both ends, making it easier for heat to escape from the heat dissipation space 501. In effect, the heat dissipation frame 5 has no end plates at either end.

[0057] Optionally, the curved light guide plate 1 has a detection hole 101 for the camera to take pictures of the workpiece; the reflective film 2 and the diffuser film 3 both avoid the detection hole 101, and the top plate 51 has an observation port 502 corresponding to the detection hole 101. The camera takes pictures of the workpiece through the detection hole 101 and the observation port 502, thereby detecting whether there are defects on the surface of the workpiece.

[0058] Optionally, the heat dissipation frame 5 also includes a vertical plate portion 52, on which heat dissipation fins 521 are arranged from top to bottom; the closer the heat dissipation fins 521 are to the top plate 51, the longer they extend towards the reflective film 2. The arrangement of the heat dissipation fins 521 effectively utilizes the space within the heat dissipation space 501, further increasing the heat dissipation area and allowing heat to be transferred to the outside more quickly through the heat dissipation frame 5.

[0059] Optionally, a ventilation hole group 503 is provided on the top plate 51, and a cooling fan 6 is installed on one side of the bottom of each ventilation hole group 503.

[0060] Example 2

[0061] This embodiment discloses a detection device, including an arched light source device as described in Embodiment 1.

[0062] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An arched light source device, characterized in that, include: Arc-shaped light guide plate (1); A reflective film (2) is attached to the outer arc surface of the arc-shaped light guide plate (1); A diffusion film (3) is attached to the inner arc surface of the arc-shaped light guide plate (1); The light plate (4) is located on the bottom side of the arc-shaped light guide plate (1). Light is emitted from between the reflective film (2) and the diffuser film (3) to the arc-shaped light guide plate (1). After being reflected by the reflective film (2), the light passes through the arc-shaped light guide plate (1) and the diffuser film (3) and is directed to the workpiece surface on the bottom side.

2. The arched light source device according to claim 1, characterized in that, It also includes a heat dissipation frame (5), on which the arc-shaped light guide plate (1), the reflective film (2) and the diffuser film (3) are all mounted; the lamp plate (4) is mounted on the heat dissipation frame (5); The lamp panel (4) is arranged in two rows, one row of lamp panels (4) is directly opposite one side of the arc-shaped light guide plate (1), and the other row of lamp panels (4) is directly opposite the other side of the arc-shaped light guide plate (1).

3. The arched light source device according to claim 2, characterized in that, A heat dissipation space (501) is formed between the heat dissipation frame (5) and the reflective film (2), and a heat dissipation fan (6) is provided on the top of the heat dissipation frame (5) facing the heat dissipation space (501). The arc-shaped light guide plate (1) is symmetrical about the set symmetry plane (100), and a number of the cooling fans (6) are arranged in two columns, with the two columns of cooling fans (6) symmetrically arranged about the set symmetry plane (100).

4. The arched light source device according to claim 3, characterized in that, The heat dissipation frame (5) has a top plate (51); The cooling fan (6) is installed on the bottom side of the top plate (51), and there is a gap (200) between the top plate (51) and the reflective film (2) for airflow to pass through.

5. The arched light source device according to claim 4, characterized in that, One column of cooling fans (6) is a blower fan that blows cooling gas into the heat dissipation space (501), and the other column of cooling fans (6) is an exhaust fan that exhausts gas from the heat dissipation space (501).

6. The arched light source device according to claim 3, characterized in that, The heat dissipation frame (5) has exhaust vents at both opposite ends.

7. The arched light source device according to claim 4, characterized in that, The arc-shaped light guide plate (1) is provided with a detection hole (101) for the camera to take pictures of the workpiece; Both the reflective film (2) and the diffuser film (3) avoid the detection hole (101), and an observation port (502) is provided on the top plate (51) corresponding to the detection hole (101).

8. The arched light source device according to claim 4, characterized in that, The heat dissipation frame (5) also includes a vertical plate (52), on which heat dissipation fins (521) are arranged from top to bottom; The closer the heat sink (521) is to the top plate (51), the longer it extends toward the reflective film (2).

9. The arched light source device according to claim 4, characterized in that, The top plate (51) is provided with a group of ventilation holes (503), and a cooling fan (6) is installed on one side of the bottom of each group of ventilation holes (503).

10. A detection device, characterized in that, It includes an arched light source device as described in any one of claims 1 to 9.

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