Light source and visual inspection device

Abstract

The utility model relates to the technical field of light source devices, and discloses a light source and a visual inspection device. The backlight source assembly comprises a lamp panel installed in the shell and a diffusion plate installed at the light outlet, and the diffusion plate is arranged on the light outlet side of the lamp panel; the lamp panel comprises a circuit board and first lamp beads installed on the circuit board in an array mode. The at least three groups of high-brightness light source assemblies are arranged around the center line of the backlight source assembly in a circumferential array mode, and the high-brightness light source assemblies obliquely emit light in the direction close to the center line of the backlight source assembly; the top end of the high-brightness light source assembly is fixedly connected with the shell, and the other end of the high-brightness light source assembly sequentially penetrates through the lamp panel and the diffusion plate to emit light. The luminous intensity of the high-brightness light source assembly is larger than that of the backlight source assembly. The light source and the visual inspection device can well illuminate a workpiece in a larger distance range.

Description

Technical Field

[0001] This utility model relates to the field of light source device technology, and in particular to a light source and a visual inspection device. Background Technology

[0002] Current light sources include a lamp panel and a diffuser plate positioned on the light-emitting side of the lamp panel. The light emitted from the lamp panel passes through the diffuser plate and then shines onto the workpiece, thus providing relatively uniform illumination. While current light sources provide relatively uniform illumination of the workpiece at shorter distances, the illumination effect weakens significantly at longer distances.

[0003] Therefore, it is necessary to design a light source and vision inspection device that can effectively illuminate workpieces over a wider distance.

[0004] 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

[0005] This invention provides a light source and a visual inspection device that can effectively illuminate workpieces over a wider distance.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A light source, comprising:

[0008] The outer casing has a light outlet;

[0009] A backlight assembly includes a lamp board installed in the housing and a diffuser plate installed at the light outlet, the diffuser plate being disposed on the light-emitting side of the lamp board; the lamp board includes a circuit board and an array of first LEDs mounted on the circuit board;

[0010] The high-brightness light source assembly is provided in at least three sets, arranged in a circular array around the center line of the backlight assembly, and the high-brightness light source assembly emits light at an angle closer to the center line of the backlight assembly; the top end of the high-brightness light source assembly is fixedly connected to the housing, and the other end sequentially passes through the lamp plate and the diffuser plate to emit light;

[0011] The luminous intensity of the high-brightness light source component is greater than that of the backlight component.

[0012] Optionally, the high-brightness light source assembly includes a cylindrical body, high-brightness LED beads, a first condensing lens, and a second condensing lens;

[0013] A light-emitting hole is provided at one end of the cylinder, and the high-brightness lamp bead, the first condensing lens and the second condensing lens are sequentially installed in the cylinder along the light-emitting direction.

[0014] Optionally, the diffuser plate is provided with a through hole, the cylinder is inclined, and the wall of the through hole is attached to the outer peripheral surface of the cylinder.

[0015] Optionally, the diffuser plate is provided with a through hole, and the distance between the hole wall and the outer peripheral wall of the cylinder is less than 0.5 mm.

[0016] Optionally, the housing includes a top plate and a side frame mounted on one side of the bottom of the top plate, the top plate and the side frame combined to form a clamping groove for clamping the circuit board;

[0017] The outer periphery of the circuit board extends into the locking groove, and the circuit board is attached to the top surface of the lamp board.

[0018] Optionally, the housing has a camera detection hole, and the center line of the camera detection hole coincides with the center line of the backlight assembly;

[0019] The light panel has a first through hole corresponding to the camera detection hole, and the diffuser plate has a second through hole corresponding to the camera detection hole;

[0020] The outer casing is also equipped with a detection cylinder, one end of which is connected to the outer casing, and the other end extends sequentially into the first through hole and the second through hole, with the wall of the second through hole abutting the outer periphery of the detection cylinder, and the detection cylinder does not extend beyond the bottom surface of the diffuser plate.

[0021] Optionally, the high-brightness lamp bead is an LED lamp bead.

[0022] A visual inspection device includes a light source as described in any of the preceding claims.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The light source and visual inspection device provided by this utility model provides a uniform backlight effect by simultaneously assembling a backlight component on the housing. By cleverly adjusting the installation structure of the high-brightness light source component, it can achieve the effect of illuminating the surface of a distant workpiece, thereby meeting the need to illuminate workpieces over a larger area.

[0025] 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

[0026] 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.

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the light source provided in an embodiment of the present utility model;

[0028] Figure 2 This is a bottom-view schematic diagram of the light source provided in an embodiment of this utility model;

[0029] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0030] Figure 4 yes Figure 3 An enlarged view of position A in the middle;

[0031] Figure 5 This is a schematic diagram of another installation structure of the high-brightness light source assembly and diffuser plate provided in this embodiment of the utility model;

[0032] Figure 6 This is a three-dimensional structural diagram of a light source equipped with camera detection provided in an embodiment of the present invention;

[0033] Figure 7 yes Figure 2 Schematic diagram of the cross-sectional structure of BB.

[0034] Reference numerals: 1. Outer shell; 101. Camera detection hole; 11. Top plate; 110. Detection cylinder; 12. Side frame; 13. Clamping groove; 121. Through hole; 2. Backlight assembly; 201. First through hole; 202. Second through hole; 21. Lamp board; 211. Circuit board; 212. First LED bead; 22. Diffuser plate; 3. High-brightness light source assembly; 31. Cylinder; 32. High-brightness LED bead; 33. First condenser lens; 34. Second condenser lens. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] Example 1

[0045] In view of the aforementioned defects in existing light sources, the applicant, based on years of extensive 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 overcome the defects in the existing technology and make the light source more practical. After continuous research, design, and repeated prototype production and improvement, this utility model with real practical value was finally created.

[0046] Please refer to Figures 1 to 4 ,as well as Figure 7 This utility model provides a light source that can illuminate workpieces at different distances, making it more practical and applicable.

[0047] The light source includes: housing 1, which serves as a support and has a downward-facing light outlet.

[0048] The backlight assembly 2 includes a lamp board 21 installed in the housing 1 and a diffuser plate 22 installed at the light outlet. The diffuser plate 22 is located on the light-emitting side of the lamp board 21. The lamp board 21 includes a circuit board 211 and an array of first lamp beads 212 installed on the circuit board 211. The light emitted from the lamp board 21 passes through the diffuser plate 22 and shines on the workpiece, providing a uniform illumination effect for the workpiece.

[0049] The high-brightness light source assembly 3 is provided in at least three sets, arranged in a circular array around the center line of the backlight assembly 2. The high-brightness light source assembly 3 emits light at an angle closer to the center line of the backlight assembly 2, and its luminous intensity is greater than that of the backlight assembly 2, thus illuminating workpieces at greater distances. Furthermore, the multiple high-brightness light source assemblies 3 arranged in a circular array around the center line of the backlight assembly 2 can effectively illuminate the top surface of workpieces at greater distances, and the angled light emitted further aids the inspection camera in better detecting surface defects on the workpiece.

[0050] The top end of the high-brightness light source assembly 3 is fixedly connected to the housing 1, and the other end passes through the lamp plate 21 and the diffuser plate 22 in sequence to emit light. The light from the high-brightness light source assembly 3 does not need to pass through the diffuser plate 22, and can illuminate further.

[0051] Optionally, the high-brightness light source assembly 3 includes a cylindrical body 31, a high-brightness LED bead 32, a first condensing lens 33, and a second condensing lens 34. One end of the cylindrical body 31 has a light-emitting hole, and the high-brightness LED bead 32, the first condensing lens 33, and the second condensing lens 34 are sequentially installed in the cylindrical body 31 along the light-emitting direction. Specifically, the light emitted by the high-brightness LED bead 32 passes through the first condensing lens 33 and the second condensing lens 34, resulting in higher light intensity and a farther illumination range. In this embodiment, the cooperation between the backlight assembly 2 and the high-brightness light source assembly 3 can effectively illuminate the surface of workpieces both close to and far from the light source, thus expanding the applicability of the light source.

[0052] Optionally, the diffuser plate 22 is provided with a through hole 121, the cylinder 31 is inclined, and the wall of the through hole 121 is fitted to the outer peripheral surface of the cylinder 31. Figure 5 As shown, specifically, the cylinder 31 is inclined and the wall of the through hole 121 fits against the outer circumferential surface of the cylinder 31, thereby enabling the cylinder 31 to support the diffuser plate 22 and preventing the diffuser plate 22 from sagging due to lack of support in the middle. Preferably, the center line of the through hole 121 coincides with the center line of the cylinder 31.

[0053] It should be noted that if the cylinder 31 is inclined and the wall of the through hole 121 is attached to the outer circumference of the cylinder 31, then the diffuser plate 22 and the high-brightness light source assembly 3 need to be assembled first, and the high-brightness light source assembly 3 needs to be fixed relatively before fixing the high-brightness light source assembly 3 to the outer shell 1. The installation is more complicated.

[0054] Optionally, the diffuser plate 22 is provided with a through hole 121, and the distance between the wall of the through hole 121 and the outer peripheral wall of the cylinder 31 is less than 0.5 mm. Specifically, the distance between the wall of the through hole 121 and the outer peripheral wall of the cylinder 31 is less than 0.5 mm, which makes the installation of the cylinder 31 more convenient.

[0055] Optionally, the housing 1 includes a top plate 11 and a side frame 12 mounted on one side of the bottom of the top plate 11. The top plate 11 and the side frame 12 are combined to form a clamping groove 13 for clamping the circuit board 211. The outer periphery of the circuit board 211 extends into the clamping groove 13, and the circuit board 211 is in contact with the top surface of the lamp board 21.

[0056] Specifically, in this embodiment, the circuit board 211 is secured by the clamping groove 13, thereby achieving complete fixation of the circuit board 211. That is, the circuit board 211 needs to be placed directly above the side frame 12 first, and then the top plate 11 is placed on the side frame 12. The top plate 11 and the side frame 12 are then locked with screws, and the top plate 11 and the side frame 12 clamp the circuit board 211.

[0057] Optionally, such as Figure 6 The outer casing 1 has a camera detection hole 101, and the center line of the camera detection hole 101 coincides with the center line of the backlight assembly 2. The lamp plate 21 has a first through hole 201 corresponding to the camera detection hole 101, and the diffuser plate 22 has a second through hole 202 corresponding to the camera detection hole 101. The outer casing 1 also has a detection cylinder 110, one end of which is connected to the outer casing 1, and the other end extends sequentially into the first through hole 201 and the second through hole 202. The wall of the second through hole 202 abuts against the outer periphery of the detection cylinder 110. The detection cylinder 110 does not protrude from the bottom surface of the diffuser plate 22 to avoid light blocking. The camera detection hole 101 allows the detection camera to be positioned at the top of the outer casing 1 and inspect the surface defects of the workpiece through the camera detection hole. Preferably, the wall of the second through hole 202 abuts against the outer periphery of the detection cylinder 110, and the friction between the detection cylinder 110 and the diffuser plate 22 allows the detection cylinder 110 to also provide some support for the diffuser plate 22.

[0058] Optionally, the high-brightness lamp bead 32 is an LED lamp bead.

[0059] Example 2

[0060] This embodiment discloses a visual inspection device, including a light source as described in Embodiment 1.

[0061] 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. A light source, characterized in that, include: The outer casing (1) has a light outlet; The backlight assembly (2) includes a lamp board (21) installed in the housing (1) and a diffuser plate (22) installed in the light outlet, wherein the diffuser plate (22) is disposed on the light-emitting side of the lamp board (21); the lamp board (21) includes a circuit board (211) and an array of first LED beads (212) installed on the circuit board (211); The high-brightness light source assembly (3) is provided in at least three sets and arranged in a circular array around the center line of the backlight assembly (2). The high-brightness light source assembly (3) emits light at an angle close to the center line of the backlight assembly (2). The top end of the high-brightness light source assembly (3) is fixedly connected to the outer shell (1), and the other end emits light sequentially through the lamp plate (21) and the diffuser plate (22). The luminous intensity of the high-brightness light source component (3) is greater than that of the backlight component (2).

2. The light source according to claim 1, characterized in that, The high-brightness light source assembly (3) includes a cylindrical body (31), a high-brightness LED bead (32), a first condensing lens (33), and a second condensing lens (34); One end of the cylindrical body (31) is provided with a light-emitting hole, and the high-brightness lamp bead (32), the first condensing lens (33) and the second condensing lens (34) are sequentially installed in the cylindrical body (31) along the light-emitting direction.

3. The light source according to claim 2, characterized in that, The diffuser plate (22) is provided with a through hole (121), the cylinder (31) is inclined, and the hole wall of the through hole (121) is attached to the outer peripheral surface of the cylinder (31).

4. The light source according to claim 2, characterized in that, The diffuser plate (22) is provided with a through hole (121), and the distance between the hole wall of the through hole (121) and the outer peripheral wall of the cylinder (31) is less than 0.5 mm.

5. The light source according to claim 1, characterized in that, The outer casing (1) includes a top plate (11) and a side frame (12) installed on one side of the bottom of the top plate (11). The top plate (11) and the side frame (12) are combined to form a clamping groove (13) for clamping the circuit board (211). The outer periphery of the circuit board (211) extends into the clamping groove (13), and the circuit board (211) is attached to the top surface of the lamp board (21).

6. The light source according to claim 1, characterized in that, The housing (1) has a camera detection hole (101), and the center line of the camera detection hole (101) coincides with the center line of the backlight assembly (2); The lamp plate (21) has a first through hole (201) corresponding to the camera detection hole (101), and the diffuser plate (22) has a second through hole (202) corresponding to the camera detection hole (101); The outer casing (1) is also equipped with a detection cylinder (110). One end of the detection cylinder (110) is connected to the outer casing (1), and the other end extends into the first through hole (201) and the second through hole (202) in sequence. The wall of the second through hole (202) abuts against the outer periphery of the detection cylinder (110), and the detection cylinder (110) does not extend beyond the bottom surface of the diffuser plate (22).

7. The light source according to claim 2, characterized in that, The high-brightness lamp bead (32) is an LED lamp bead.

8. A visual inspection device, characterized in that, It includes a light source as described in any one of claims 1 to 7.

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