Light source device and defect detection equipment

Abstract

The utility model relates to a light source device and defect detection equipment. The light source device comprises a box body, the box body is a containing cavity with an opening in one end, and an information collecting window is formed in the other end of the box body. The plurality of light emitting modules are fixedly arranged in the accommodating cavity; each light-emitting module comprises a plurality of light-emitting assemblies, and the light-emitting surfaces of the light-emitting assemblies face the opening direction of the containing cavity; and the control module is fixedly arranged in the containing cavity, and the control module is electrically connected with the light-emitting assembly. The light source device can improve the imaging stability when the camera shoots the product to be detected, the whole light source structure is more compact, the space requirement is smaller, and the cost can be reduced.

Description

Technical Field

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

[0002] With the rapid development of my country's industry, the degree of automation in industrial production is getting higher and higher. It has become a trend to use machine inspection equipment instead of manual product defect detection. Especially for large quantities of products, the use of machine inspection equipment can quickly complete the inspection, and the defect detection accuracy is high, which greatly improves production efficiency.

[0003] When using machine inspection equipment to detect different product defects, in order to obtain the best detection effect, it is necessary to select and customize different light sources according to the characteristics of the product to be inspected. However, this will require frequent replacement of light sources, and the light source customization cycle is long, which will affect the detection efficiency and detection cost, and thus affect production efficiency and cost. The current adjustable multi-angle light source, by setting up multiple light-emitting modules, can detect defects of different types and positions by controlling the light-emitting parameters of multiple light-emitting modules and the light-emitting at different positions, thereby realizing multi-angle and different position lighting of the product to be inspected, which can solve the problem of the need to re-customize the light source when the visual inspection system is applied to different inspection products. However, the current adjustable multi-angle light source is prone to unstable imaging when taking pictures of the product to be inspected with a camera. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a light source device, by setting a box body with openings at both ends, the control module and the light-emitting module are integrated and fixed in the box body, the control module is electrically connected to the light-emitting module through a short connecting line to improve the accuracy of the control of the light-emitting module by the control module, thereby improving the imaging stability, and at the same time the entire light source structure is more compact, the space requirement is smaller, and the cost can be reduced.

[0005] Another object of the utility model is to provide a defect detection device, which adopts the above-mentioned light source device to provide a stable light source with specific parameters for products to be inspected with different characteristics and different positions of the products to be inspected, so as to improve imaging stability. At the same time, the entire light source structure is more compact, the space requirement for the detection equipment is smaller, and the cost can be reduced.

[0006] A light source device, comprising:

[0007] A box body, wherein the box body is a containing cavity with an open end and an information collection window on the other end;

[0008] A plurality of light-emitting modules, wherein the light-emitting modules are fixedly arranged in the accommodating cavity; each light-emitting module comprises a plurality of light-emitting components, wherein the light-emitting surfaces of the light-emitting components are arranged toward the opening direction of the accommodating cavity;

[0009] A control module is fixedly disposed in the accommodating cavity and is electrically connected to the light-emitting component.

[0010] Furthermore, the box body includes a cover plate, the information collection window is opened on the cover plate, and the control module is sandwiched between the cover plate and the light emitting module;

[0011] The control module includes a control board, and a second opening is provided on the control board. The second opening is arranged opposite to the information collection window, and the orthographic projection of the second opening on the cover plate covers the opening range of the information collection window.

[0012] Furthermore, the control module further comprises a plurality of plug-in terminal blocks and a plurality of short connecting wires, wherein the plug-in terminal blocks are fixedly arranged on a side of the control board away from the information collection window, one end of the short connecting wire is connected to the plug-in terminal block, and the other end is connected to the light-emitting component;

[0013] The plug-in terminal seat includes a male terminal and a female terminal, the male terminal is electrically connected to the control board, and the female terminal is electrically connected to the light-emitting component through the short connecting wire, or the female terminal is electrically connected to the control board, and the male terminal is electrically connected to the light-emitting component through the short connecting wire.

[0014] Furthermore, the light emitting module further includes a fixed housing;

[0015] The fixed housing has a first opening at one end facing the information collection window, the first opening is directly opposite to the information collection window, and the fixed housing has an open end away from the information collection window;

[0016] A plurality of light emitting components are fixedly arranged on the inner wall of the fixed shell, and the light emitting surfaces thereof face the opening direction of the accommodating cavity.

[0017] Furthermore, the inner wall of the fixed shell is an arc-shaped wall surface, and the multiple groups of light-emitting components are arranged on the arc-shaped wall surface of the fixed shell.

[0018] Furthermore, there are two light-emitting modules, and the two light-emitting modules are connected at adjacent locations; and each light-emitting module is provided with 36 groups of light-emitting components.

[0019] Furthermore, a plurality of first notches are formed at one end of the fixed shell facing the opening direction, and a plurality of second notches are formed at the side plate opposite to the first notches, and the opening range of the second notches is larger than the opening range of the first notches.

[0020] Furthermore, it also includes: a plurality of heat dissipating elements; a plurality of openings are opened on the side plate, and the heat dissipating elements extend through the openings into the accommodating cavity.

[0021] Furthermore, a diffusion structure is provided on one side of the light emitting surface of the light emitting component.

[0022] A defect detection device, used for performing defect detection on a product to be detected, comprising the light source device and the camera described in the utility model;

[0023] The light source device is arranged above the product to be inspected, and the light emitting surface of the light emitting component faces the product to be inspected;

[0024] The camera is arranged on a side of the light source device away from the product to be inspected, and the lens of the camera is opposite to the information collection window. The information collection window is connected to an open end of the box body for the camera to take pictures of the product to be inspected.

[0025] The beneficial effects of the utility model are:

[0026] (1) By setting a box body with openings at both ends, the control module and the light-emitting module are integrated and fixed in the box body. The control module is electrically connected to the light-emitting module through a short connecting line to improve the accuracy of the control module over the light-emitting module, thereby improving the imaging stability. At the same time, the entire light source structure is more compact, the space requirement is smaller, and the cost can be reduced.

[0027] (2) By setting up multiple light-emitting modules, a larger range of information collection windows can be provided for camera shooting. The information collection window can be compatible with multiple sets of cameras and lenses for simultaneous imaging detection, so that the detection range is larger and can meet the detection requirements of products of various sizes to be detected, thereby improving the versatility of the light source device and improving production efficiency;

[0028] (3) Each light-emitting module uses multiple groups of light-emitting components, and the multiple groups of light-emitting components are arranged on the arc-shaped inner wall surface so that the multiple groups of light-emitting components are arranged at different angles, thereby improving the uniformity of light irradiated on the product to be inspected and realizing lighting at different angles;

[0029] (4) By providing a diffusion structure on the light-emitting side of the light-emitting component, a diffuse reflection effect can be provided for the light-emitting component, thereby reducing the directivity of the light emitted by the light-emitting component and increasing the illumination uniformity of the light source;

[0030] (5) Multiple groups of light-emitting components will generate heat when the light-emitting and control modules are working. By setting a heat sink in the box, the heat in the box can be dissipated to the external environment to avoid excessive temperature in the box that affects the normal operation of the light-emitting module and the control module, thereby extending the service life of the entire light source structure.

[0031] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a partial structure of a defect detection device provided in an embodiment of the present application;

[0033] Figure 2 A schematic diagram of the structure of a light source device provided in an embodiment of the present application;

[0034] Figure 3 An exploded diagram of the structure of a light source device provided in an embodiment of the present application;

[0035] Figure 4 A schematic cross-sectional view of a light source device provided in an embodiment of the present application;

[0036] Figure 5 A top view of a light source device provided in an embodiment of the present application;

[0037] Figure 6 A schematic diagram of the structure of a light-emitting component provided in an embodiment of the present application;

[0038] Figure 7 for Figure 6 Corresponding 72-way light-emitting component distribution diagram;

[0039] Figure 8 A schematic diagram of the internal structure of a light source device provided in an embodiment of the present application.

[0040] In the figure: 10-box body; 11-cover plate; 12-side plate; 11a-information collection window; 12a-second notch; 20-light-emitting module; 21-fixed shell; 22-light-emitting component; 211-shell plate; 21a-first opening; first notch 21b; 23-diffusing structure; 30-control module; 31-control board, 32-plug-in terminal seat; 33-electrical connection seat; 31a-second opening; 40-heat sink. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The adjustable multi-angle light source in the existing defect detection equipment can realize multi-angle lighting of the product to be detected, and can realize the lighting of the product to be detected with different characteristics by controlling the parameters of each light-emitting component. However, in the actual detection process, as a large number of products are detected, it is found that when taking pictures of the product to be detected with a camera, the imaging is often unstable. So the components of the entire detection equipment were gradually checked. At first, it was thought that the camera was not fixed firmly enough, resulting in unstable imaging. But even if the camera was further fixed, this imaging instability still exists. Further investigation found that the flashing frequency and lighting duration of multiple groups of light-emitting components controlled by the control module in the light source provided for the product to be detected are often unstable and inconsistent. After analysis, the control module and the light-emitting module are electrically connected through multiple external extension cables. The entanglement of multiple external extension cables is likely to cause signal interference. Under the influence of signal interference, the accuracy of the control module's control of the light-emitting module is greatly reduced. Moreover, the entanglement of multiple external extension cables is not conducive to the overall layout of the detection equipment.

[0045] Based on this, the utility model integrates the control module and the light-emitting module together for stability, and electrically connects them through shorter connecting lines to reduce the interference of the control module on the control signal of the light-emitting module on the light source, thereby improving imaging stability. At the same time, the entire light source structure is more compact, requires less space, and can reduce costs.

[0046] See also Figure 1An embodiment of the present application provides a defect detection device for performing defect detection on a product 1 to be inspected, including a light source device and a camera 2. The light source device provides a defect detection light source for the product 1 to be inspected, and the camera 2 takes a picture of the product 1 to be inspected to collect image information.

[0047] Please also see Figures 1 to 3 The light source device provided in the embodiment of the present application includes a box body 10, a plurality of light-emitting modules 20 and a control module 30. The plurality of light-emitting modules 20 and the control module 30 are integrated and fixed in the box body 10, and the control module 30 is electrically connected to the light-emitting modules 20.

[0048] Specifically, the box body 10 includes a cover plate 11 and a plurality of side plates 12, and the cover plate 11 and the plurality of side plates 12 are arranged to form a receiving cavity with an open end. A plurality of light emitting modules 20 and a control module 30 are fixedly arranged in the receiving cavity, and the light emitting direction of the light emitting module 20 is arranged toward the open direction of the receiving cavity, so that the light emitted by the light emitting module 20 is irradiated on the product to be inspected 1 from the open direction. An information collection window 11a is provided on the cover plate 11, and the camera 2 is arranged on the side of the information collection window 11a away from the open side of the box body 10, and the information collection window 11a is communicated with the open end of the box body 10, so as to ensure that the camera 2 can take pictures of the product to be inspected 1 through the information collection window 11a. The side panels 12 may be one integrally connected side panel or a plurality of side panels, the cover panel 11 and the adjacent sides of the side panels 12 may be integrally connected or detachably fixed. In the present embodiment, the side panels 12 are four separate side panels 12, and the cover panel 11 and the adjacent sides of the four side panels 12 are detachably fixed to form the box body 10, which is convenient for the fixed installation of the light-emitting module 20 and the control module 30.

[0049] The light-emitting module 20 includes a fixed shell 21 and a plurality of light-emitting components 22. The fixed shell 21 is fixedly arranged in the accommodating cavity. A first opening 21a is provided at one end of the fixed shell 21 facing the information collection window 11a. The first opening 21a is directly opposite to the information collection window 11a. The fixed shell 21 is open at one end away from the information collection window 11a. Specifically, the fixed shell 21 is formed by a plurality of shell plates 211 being fixedly connected. A clamping portion is provided at one end of the fixed shell 21 facing the information collection window 11a. The outer peripheral edge of the clamping portion at one end facing the information collection window 11a matches the size of the information collection window 11a, so that the clamping portion can be directly clamped in the information collection window 11a, so that the light-emitting module 20 is fixedly installed in the accommodating cavity. The first opening 21a is provided on a side of the clamping portion opposite to the information collection window 11a, so that the information collection window 11a is connected to the open end of the box body 10, so that the camera 2 can take pictures of the product 1 to be inspected. The shell plates 211 may be one integrally connected shell plate or multiple separate shell plates. Preferably, the shell plates 211 are multiple shell plates. Thus, when a part of the fixed shell 21 is damaged, only the damaged part needs to be removed for repair or replacement, thus saving repair costs.

[0050] In another embodiment, the fixed shell 21 may also be fixedly connected to the inner wall of the box body 10 through its outer wall.

[0051] Please also see Figure 3 and Figure 4In this embodiment, two light-emitting modules 20 are provided, and the adjacent parts of the two light-emitting modules 20 are connected. At this time, the two first openings 21a are connected, and the connected first openings 21a are directly opposite to the information collection window 11a, and the opening range of the information collection window 11a covers the opening range of the connected first openings 21a, so that the shooting range of the camera 2 is as large as possible. When two light-emitting modules 20 are used, by connecting the two first openings 21a, the information collection window 11a is also enlarged accordingly, thereby forming a shooting window with a larger range. The large window can be compatible with a wider visual shooting, so that the detection range is larger, and the detection requirements of products of more sizes can be met, thereby improving the versatility of the light source device in the detection equipment. As a further preferred embodiment, two groups of light emitting components 22 are symmetrically arranged along the central axis of the long side of the information collection window 11a, and the first openings 21a opened by the two groups of light emitting components 22 are parallel to and opposite to the information collection window 11a, and the orthographic projections on the cover plate 11 are respectively arranged in a U shape, and the information collection window 11a directly opposite thereto is in a similar shape. In some other embodiments, the first openings 21a opened by the two groups of light emitting components 22 are respectively square, circular or other shapes, which are not limited here. By symmetrically arranging the two groups of light emitting components 22 along the central axis of the long side of the information collection window 11a, the light emitted by the light emitting components 22 is symmetrically distributed in the fixed housing 21 to improve the uniformity of illumination.

[0052] In other embodiments, the light-emitting modules 20 can be set as one group, three groups, four groups, etc. according to the actual size of the product 1 to be inspected and the actual needs of the user. When the light-emitting modules 20 are set to multiple, the adjacent parts of the multiple light-emitting modules 20 are connected to further increase the shooting range of the camera 2.

[0053] See also Figure 5 Furthermore, the inner wall of the fixed shell 21 is set as an arc-shaped wall surface, and multiple groups of light-emitting components 22 are arranged on the arc-shaped wall surface of the fixed shell 21, and their light-emitting surfaces face the open direction of the accommodating cavity. Specifically, the plane parallel to the information collection window 11a is defined as the horizontal plane of the inner wall of the fixed shell 21, and each group of light-emitting components 22 is arranged on the same horizontal plane of the inner wall of the fixed shell 21, and the light-emitting surface of the light-emitting component 22 forms a certain angle with the plane parallel to the information collection window 11a, and the angle range is 5° to 55°, which can realize multi-angle lighting of the product 1 to be detected.

[0054] It is understandable that each group of light emitting components 22 can also be arranged along the longitudinal direction of the inner wall of the fixed housing 21, or along other directions, and the distribution of the light emitting components 22 on the inner wall of the fixed housing 21 can also be adjusted arbitrarily. In addition, the inner wall of the fixed housing 21 can also be an inclined wall surface, or other forms of wall surfaces that can make the light emitting components 22 at different positions present different angles, but it is not limited thereto.

[0055] See also Figure 6 Furthermore, in order to increase the adjustability of the light-emitting module 20 to obtain a richer and more diverse light source, the number of groups of light-emitting components 22 provided in each light-emitting module 20 ranges from 25 to 45 groups. In the present embodiment, 36 groups are preferred. Thus, for two light-emitting modules 20, 72 groups of light-emitting components 22 can be individually controlled to illuminate different positions of the inspected product 1. At the same time, the light-emitting parameters of each group of light-emitting components 22 can be adjusted and set according to specific needs, thereby realizing the detection of defects of the inspected objects at different positions and with different characteristics by controlling whether the light-emitting components 22 at different positions emit light and different light-emitting parameters.

[0056] See also Figure 3 Furthermore, in this embodiment, in order to make the light emitted by the light emitting module 20 disposed in the accommodating cavity shine as much as possible on the product to be detected 1, a plurality of first notches 21b are provided at one end of the fixed housing 21 facing the opening direction, and a plurality of second notches 12a are provided on the side plate 12 opposite to the first notches 21b. Preferably, the opening range of the second notches 12a is larger than the opening range of the first notches 21b, and the light emitted by the light emitting component 22 passes through the first notches 21b and the second notches 12a to shine on the product to be detected 1.

[0057] Furthermore, each group of light-emitting components 22 is a light source composed of multiple light-emitting units, and the light-emitting unit is the smallest light-emitting unit in the light-emitting components 22. The control module 30 can also individually control the light-emitting units in each group of light-emitting components 22 as needed, which can save energy and extend the service life of the light-emitting components 22. The light emitted by the light-emitting units includes but is not limited to red light, green light, blue light, white light, ultraviolet light and infrared light. The control module 30 controls the flashing frequency of any light-emitting unit of the light-emitting component 22 according to the shooting frequency of the camera 2. Multiple light-emitting units can emit light of the same or different colors. Through the combination of light of different colors emitted by each light-emitting unit, the color temperature of the light emitted by the light-emitting module 20 can be adjusted to achieve a variety of lighting methods with different color temperatures, which is suitable for more application scenarios. In this embodiment, the light-emitting unit is an LED lamp.

[0058] Furthermore, in this embodiment, a diffusion structure 23 is provided on one side of the light-emitting surface of the light-emitting component 22. The diffusion structure 23 includes a plurality of diffusion plates. The shape of the diffusion structure 23 matches the inner wall surface of the fixed housing 21. The plurality of diffusion plates are directly opposite to the light-emitting surface of the light-emitting component 22. The diffusion structure 23 can provide a diffuse reflection effect for the light-emitting component 22 to reduce the directivity of the light emitted by the light-emitting component 22, thereby increasing the illumination uniformity of the light source. In another embodiment, the diffusion structure 23 is a diffuse reflection coating coated on the light-emitting surface of the light-emitting component 22.

[0059] See also Figure 8In this embodiment, the control module 30 is sandwiched between the cover plate 11 and the light emitting module 20. The control module 30 includes a control board 31, a plurality of plug-in terminal sockets 32, a plurality of short connecting wires (not shown) and a plurality of electrical connection sockets 33. A second opening 31a is provided on the control board 31, and the second opening 31a is arranged opposite to the information collection window 11a, and the orthographic projection of the second opening 31a on the cover plate 11 covers the opening range of the information collection window 11a. Preferably, the control board 31 is a flat plate and is arranged parallel to and opposite to the cover plate 11, and the second opening 31a is parallel to and opposite to the information collection window 11a, and its opening range is equal to the size of the information collection window 11a. At this time, the clamping portion 211 simultaneously passes through the second opening 31a and is clamped in the information collection window 11a.

[0060] The plug-in terminal seat 32 is fixedly arranged on the side of the control board 31 away from the information collection window 11a, one end of the short connection line is connected to the plug-in terminal seat, and the other end is connected to the light-emitting component. The plug-in terminal seat 32 includes a male terminal and a female terminal, the male terminal is electrically connected to the control board 31, and the female terminal is electrically connected to the light-emitting component 22 through the short connection line, or the female terminal is electrically connected to the control board 31, and the male terminal is electrically connected to the light-emitting component 22 through the short connection line. Through the plug-in terminal seat 32, the terminal heads of multiple short connecting wires electrically connected to the light-emitting component 22 can be conveniently electrically connected to the control board 31 through the plug-in terminal seat 32, wherein the length of the multiple short connecting wires is much smaller than the length of the external connecting wires required before integration, and the multiple short connecting wires are integrated in the box body 10, and the short connecting wires are dispersedly arranged without interfering with each other, and each group of light-emitting components 22 is independently controlled, thereby avoiding the signal interference caused by the long connecting wire being too long and the entanglement between the multiple connecting wires, improving the control accuracy of the control module 30, thereby improving the imaging stability, and greatly reducing the cost. As an exemplary embodiment, the short connecting wire after the control module 30 is integrated into the box body 10 is 10 to 50 mm, and as a comparative embodiment, when the control module 30 is arranged outside the box body, a long extension cable is required, and the external extension cable is 10 to 20 m. At this time, the signal interference caused by the excessive length of the multiple external extension cables themselves and the entanglement between the multiple cables will inevitably affect the control accuracy of the control module 30 on the light-emitting component 22.

[0061] The electrical connection base 33 is fixed on the side of the control board 31 facing the information collection window 11a. The cover plate 11 is provided with a plurality of through holes, through which the electrical connection base 33 protrudes from the cover plate 11. In the installed state, the electrical connection base 33 is connected to the power supply through the wire to provide power for the control module 30 and the light emitting module 20.

[0062] The control module 30 and the light-emitting module 20 are firmly integrated and fixed in the accommodating cavity. The control module 30 is electrically connected to the light-emitting module 20 via a short connecting line. This can avoid signal interference generated when the control module 30 and the light-emitting module 20 are electrically connected via an external extension line, thereby improving the accuracy of the control of the light-emitting module 20 by the control module 30, thereby improving the imaging stability. At the same time, the entire light source structure is more compact, the space requirement is smaller, and the cost can be reduced.

[0063] Furthermore, the light source device of this embodiment also includes a plurality of heat sinks 40. Specifically, a plurality of openings are provided on the side panel 12, and the heat sink 40 extends through the openings into the accommodating cavity. The heat sink 40 can be a plurality of heat sinks or a heat dissipation fan, preferably a heat dissipation fan. By providing the heat sink 40, the heat in the box body 10 can be dissipated to the external environment to avoid the excessive temperature in the box body 10 affecting the normal operation of the components of the light-emitting module 20 and the control module 30, thereby extending the service life of the entire light source. In addition, a plurality of heat dissipation holes are also provided on the side panel 12 to further enhance the heat dissipation capability.

[0064] In the defect detection device provided by the embodiment of the present application, in this embodiment, the light source device is arranged above the product to be detected 1, and the light-emitting surface of the light-emitting component 22 is facing the product to be detected 1. The camera 2 is arranged on the side of the light source device away from the product to be detected 1, and the lens of the camera 2 is facing the information collection window 11a, the information collection window 11a is connected to the open end of the box body 10, the light emitted by the light-emitting component 22 is irradiated on the product to be detected 1, and the light emission and various parameters of each light-emitting component 22 are adjusted by the control module 30.

[0065] Compared with the prior art, the beneficial effects of the technical solution of this application are:

[0066] (1) By setting a box body with openings at both ends, the control module and the light-emitting module are integrated and fixed in the box body. The control module is electrically connected to the light-emitting module through a short connecting line to improve the accuracy of the control module over the light-emitting module, thereby improving the imaging stability. At the same time, the entire light source structure is more compact, the space requirement is smaller, and the cost can be reduced.

[0067] (2) By setting up multiple light-emitting modules, a larger range of information collection windows can be provided for camera shooting. The information collection window can be compatible with multiple sets of cameras and lenses for simultaneous imaging detection, so that the detection range is larger and can meet the detection requirements of products of various sizes to be detected, thereby improving the versatility of the light source device and improving production efficiency;

[0068] (3) Each light-emitting module uses multiple groups of light-emitting components, and the multiple groups of light-emitting components are arranged on the arc-shaped inner wall surface so that the multiple groups of light-emitting components are arranged at different angles, thereby improving the uniformity of light irradiated on the product to be inspected and realizing lighting at different angles;

[0069] (4) By providing a diffusion structure on the light-emitting side of the light-emitting component, a diffuse reflection effect can be provided for the light-emitting component, thereby reducing the directivity of the light emitted by the light-emitting component and increasing the illumination uniformity of the light source;

[0070] (5) Multiple groups of light-emitting components will generate heat when the light-emitting and control modules are working. By setting a heat sink in the box, the heat in the box can be dissipated to the external environment to avoid excessive temperature in the box that affects the normal operation of the light-emitting module and the control module, thereby extending the service life of the entire light source structure.

[0071] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A light source device, characterized in that: include: A box body, wherein the box body is a containing cavity with an open end and an information collection window on the other end; A plurality of light-emitting modules, wherein the light-emitting modules are fixedly arranged in the accommodating cavity; each light-emitting module comprises a plurality of light-emitting components, wherein the light-emitting surfaces of the light-emitting components are arranged toward the opening direction of the accommodating cavity; A control module is fixedly disposed in the accommodating cavity and is electrically connected to the light-emitting component.

2. The light source device according to claim 1, characterized in that: The box body includes a cover plate and a plurality of side plates, the information collection window is opened on the cover plate, and the control module is sandwiched between the cover plate and the light-emitting module; The control module includes a control board, and a second opening is provided on the control board. The second opening is arranged opposite to the information collection window, and the orthographic projection of the second opening on the cover plate covers the opening range of the information collection window.

3. The light source device according to claim 2, characterized in that: The control module further comprises a plurality of plug-in terminal seats and a plurality of short connecting wires, wherein the plug-in terminal seats are fixedly arranged on a side of the control board away from the information collection window, one end of the short connecting wire is connected to the plug-in terminal seat, and the other end is connected to the light-emitting component; The plug-in terminal seat includes a male terminal and a female terminal, the male terminal is electrically connected to the control board, and the female terminal is electrically connected to the light-emitting component through the short connecting wire, or the female terminal is electrically connected to the control board, and the male terminal is electrically connected to the light-emitting component through the short connecting wire.

4. The light source device according to claim 3, characterized in that: The light emitting module further includes a fixed housing; The fixed housing has a first opening at one end facing the information collection window, the first opening is directly opposite to the information collection window, and the fixed housing has an open end away from the information collection window; A plurality of light emitting components are fixedly arranged on the inner wall of the fixed shell, and the light emitting surfaces thereof face the opening direction of the accommodating cavity.

5. The light source device according to claim 4, characterized in that: The inner wall of the fixed shell is an arc-shaped wall surface, and a plurality of groups of light-emitting components are arranged on the arc-shaped wall surface of the fixed shell.

6. The light source device according to claim 5, characterized in that: There are two light-emitting modules, and the two light-emitting modules are connected at adjacent locations; Each light-emitting module is provided with 36 groups of light-emitting components.

7. The light source device according to claim 6, characterized in that: A plurality of first notches are formed at one end of the fixed shell facing the opening direction, and a plurality of second notches are formed on the side plate opposite to the first notches. The opening range of the second notches is larger than the opening range of the first notches.

8. The light source device according to any one of claims 2 to 7, characterized in that: Also includes: Several heat sinks; The side plate is provided with a plurality of openings, and the heat sink extends through the openings into the accommodating cavity.

9. The light source device according to any one of claims 1 to 7, characterized in that: A diffusion structure is provided on one side of the light emitting surface of the light emitting component.

10. A defect detection device for performing defect detection on a product to be detected, characterized in that: include: The light source device and camera as described in any one of claims 1 to 9; The light source device is arranged above the product to be inspected, and the light emitting surface of the light emitting component faces the product to be inspected; The camera is arranged on a side of the light source device away from the product to be inspected, and the lens of the camera is opposite to the information collection window. The information collection window is connected to an open end of the box body for the camera to take pictures of the product to be inspected.

Images