Multicolor concentric point light source

Abstract

The utility model relates to the technical field of light source structures, and provides a multicolor concentric point light source which comprises a lamp holder, a light source module and a light source module. The lamp panel is mounted on the mounting part, a lamp bead is arranged on the side, away from the mounting part, of the lamp panel, and at least two light-emitting chips are arranged in the lamp bead; the fixed seat is clamped with the lamp holder; the light scattering plate is mounted on the fixed seat and is opposite to the lamp panel; the light guide column is mounted on the fixed seat, far away from the lamp panel and arranged on the other side of the light diffusion plate; light of any one and / or multiple light-emitting chips penetrates through the light scattering plate and then is evenly refracted to form a first light beam, and the first light beam penetrates through the light guide column and then forms a second light beam to be emitted outwards. According to the utility model, the problem that the illumination of a plurality of light-emitting chips is not concentric is solved, so that the light rays of the light-emitting chips at different positions of the lamp bead are uniformly distributed, and the first light beam is condensed by the light guide column to form the second light beam, so that the condensation effect of the light spot is better, and the efficiency of the defect detection process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of light source structure, in particular to a multi-color concentric point light source. Background Art

[0002] Currently, when detecting surface defects of capacitors and screws, point light sources need to be replaced for detection because a point light source of the same color is not sufficient to detect all defects at once and provide feedback to the user through the camera. However, constant disassembly and replacement of light sources will affect work efficiency.

[0003] Although two-color point light sources are now available on the market, the centers of the light spots are often not in the same position when they are lit separately, so the angle of the light source needs to be readjusted. In order to meet the needs of users, multi-color point light sources have also appeared on the market, but because they use multi-chip lamp beads, it is inevitable that the centers of the light spots are not in the same position when they are lit separately. In this case, the angle of the light source needs to be readjusted, which will also affect work efficiency.

[0004] Therefore, it is necessary to study a light source that can achieve a concentric point light source without frequent disassembly and assembly of the light source and frequent adjustment of the light source angle, so as to improve work efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a multi-color concentric point light source with high detection efficiency and without the need to adjust the light irradiation angle.

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

[0007] A multicolor concentric point light source, comprising:

[0008] A lamp holder having a mounting portion;

[0009] A light board is mounted on the mounting portion, a lamp bead is arranged on a side of the light board away from the mounting portion, and at least two light-emitting chips are arranged in the lamp bead;

[0010] A fixing base, which is mutually engaged with the lamp holder;

[0011] A light diffuser, mounted on the fixing seat and arranged opposite to the light panel;

[0012] A light guide column is mounted on the fixing seat and is arranged on the other side of the light diffuser away from the light panel;

[0013] Among them, the light of any one or more of the light-emitting chips is uniformly refracted to form a first light beam after passing through the diffuser plate, and the first light beam passes through the light guide column to form a second light beam and emit outward.

[0014] In one embodiment, the fixing base is mounted on the lamp holder and forms a light-emitting cavity with the lamp holder, and the lamp board is located at one side of the light-emitting cavity;

[0015] The multi-color concentric point light source also includes a locking member installed on the fixing seat, and the locking member is arranged on the outer side of the diffuser plate close to the light emitting cavity to limit the position of the diffuser plate.

[0016] In one embodiment, the mounting portion includes a mounting wall and a mounting groove provided in the mounting wall, and the light board is mounted in the mounting groove;

[0017] The fixing seat is further provided with a connecting wall which is mutually engaged with the installation wall, and the outer side of the installation wall is mutually engaged with the connecting wall.

[0018] In one embodiment, both the mounting wall and the connecting wall are provided with fixing holes, and the multi-color concentric point light source includes fixing members installed in the fixing holes.

[0019] In one embodiment, the projection of the lamp bead coincides with the center of the diffuser plate.

[0020] In one embodiment, electrical connection holes are provided on the installation wall and the connection wall;

[0021] The multi-color concentric point light source further includes connection terminals electrically connected to the light board through the electrical connection holes, and the number of the connection terminals matches the number of the light-emitting chips.

[0022] In one embodiment, a limiting column is further provided on the top of the fixing seat for penetrating the top of the fixing seat, and the limiting column moves up and down on the top of the fixing seat by rotating to abut against or move away from the light guide column, thereby limiting the light guide column.

[0023] In one embodiment, the multi-color concentric point light source further includes a heat conductive sheet, which is disposed at the bottom end of the mounting groove, and the bottom of the lamp panel is in contact with the heat conductive sheet.

[0024] In one embodiment, the lamp holder further comprises a plurality of heat dissipation ribs arranged on the outer side wall, and any two adjacent heat dissipation ribs are arranged at intervals.

[0025] In one embodiment, the number of the light emitting chips is set to three.

[0026] The beneficial effect of the utility model is that it scatters the irradiation light of the light-emitting chip to form a first light beam by setting a diffuser plate, thereby solving the problem of unequal illumination of multiple light-emitting chips, so that the light of the light-emitting chips at different positions of the lamp beads is evenly distributed, and there is no need to replace the monochromatic light source for technical lighting, and the first light beam passes through the light guide column and is focused by the light guide column to form a second light beam, so that the first light beam forms the second light beam after being focused by the light guide column, so that the focusing effect of the light spot is better, the situation of misjudgment of defects caused by the divergence of the light source is solved, and the efficiency of the defect detection process is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a stereogram of one embodiment of a multi-color concentric point light source of the utility model;

[0028] Figure 2 This is an exploded view of one embodiment of a multi-color concentric point light source of the utility model;

[0029] Figure 3 This is a cross-sectional view of one embodiment of a multi-color concentric point light source of the utility model;

[0030] Figure 4 for Figure 2 A schematic diagram of the structure of one embodiment of the central light panel.

[0031] Reference numerals:

[0032] 100, multi-color concentric point light source; 101, lamp holder; 111, mounting portion; 102, lamp board; 112, lamp bead; 121, light-emitting chip; 103, fixing seat; 104, diffuser plate; 105, light guide column; 10a, light-emitting cavity; 113, locking piece; 131, mounting wall; 132, mounting groove; 141, connecting wall; 142, fixing hole; 143, fixing piece; 144, electrical connection hole; 145, wiring terminal; 146, limiting column; 106, heat conductive sheet; 151, heat dissipation rib. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] At present, point light sources are used to detect surface defects of capacitors and screws. Since point light sources of the same color are not enough to detect all defects at once and provide feedback to users through cameras, it is necessary to change the light source for detection. However, constant disassembly and replacement of light sources will affect work efficiency. Although two-color point light sources are now available on the market, traditional two-color point light sources often have the center of the light spot not in the same position when they are lit separately, so the light source angle needs to be readjusted; in order to meet user needs, multi-color point light sources are also available on the market, but because they use multi-chip lamp beads, it is inevitable that the center of the light spot will not be in the same position when they are lit separately. In this case, the light source angle needs to be readjusted, which will also affect work efficiency. At the same time, if the intensity distribution of the light spot is uneven, uneven brightness will occur, affecting visual effects and comfort. If it is used to detect surface defects, it will affect imaging and affect defect judgment.

[0036] Based on this, this embodiment provides a multi-color concentric point light source, which can quickly use a two-color light source to detect characteristic defects of the object under test, while avoiding frequent disassembly and assembly of the light source, keeping the two-color light source concentric, so as to improve work efficiency.

[0037] Please refer to Figure 1-4As shown, the present embodiment provides a multi-color concentric point light source 100, which includes a lamp holder 101 with a mounting portion 111 and a lamp board 102 mounted on the mounting portion 111; wherein, a lamp bead 112 is provided on a side of the lamp board 102 away from the mounting portion 111, and at least two light-emitting chips 121 are arranged in the lamp bead 112, and the light-emitting chip 121 is a semiconductor wafer, one end of the wafer is attached to a bracket, one end is a negative pole, and the other end is connected to the positive pole of a power supply, so that the entire wafer is encapsulated by epoxy resin; optionally, the number of light-emitting chips 121 provided in the present embodiment is three, and the light colors of the three light-emitting chips 121 are different. According to different detection requirements, one of the RGB colors can be lit separately for detection, and two or three can also be lit at the same time. Colors are mixed into other colors for detection by adjusting their color ratio (i.e., the size of the output current) to detect different defects of the object to be detected, and the light-emitting chips 121 are arranged in a row in the lamp bead 112 for installation. During the light-emitting process, since the installation positions of the multiple light-emitting chips 121 cannot all be set in the center of the lamp bead 112, the light of the light-emitting chips 121 that are not located in the center of the lamp bead 112 will be emitted outward from the side of the lamp bead 112 during operation, thereby reducing the uniformity of light illumination and affecting the detection efficiency; at the same time, when multiple light-emitting chips 121 are required to work at the same time to generate different colors of light for mixed light to detect some other workpieces, due to the different installation positions of the light-emitting chips 121, the light mixing effect is poor, resulting in poor detection effect.

[0038] Preferably, according to the above scheme, the multi-color concentric point light source 100 also includes a fixing seat 103, a diffuser plate 104 installed on the fixing seat 103 and arranged opposite to the lamp board 102, and a light guide column 105 installed on the fixing seat 103 and arranged on the other side of the diffuser plate 104 away from the lamp board 102; wherein the fixing seat 103 and the lamp holder 101 are mutually engaged; it can be understood that the diffuser plate 104 is used to diffuse the light emitted from the lamp bead 112, thereby diffusing the light emitted by one or more light-emitting chips 121 in the lamp bead 112, and when the one or more light-emitting chips 121 in the lamp bead 112 are After the emitted light is diffused by the diffuser plate 104, the light will be uniformly emitted from the other side of the diffuser plate 104 and directed to the light guide column 105. In this embodiment, a special diffusion material is used to refract and disperse the light to form a first light beam so that the light intensity distribution is uniform. The first light beam then passes through the light guide column 105 and is focused by the light guide column 105 to form a second light beam and is emitted outward from the light outlet of the light guide column 105. Then, the sample to be tested is placed under the light outlet of the light guide column 105. After the light source is powered on, the object to be tested is illuminated, and the camera starts to take images. The image taken is transmitted back to the terminal for testing to obtain the test result of the object to be tested.

[0039] The utility model solves the problem of unequal illumination of multiple light-emitting chips 121 by setting a diffuser plate 104, thereby eliminating the need to replace the monochromatic light source for technical lighting, simplifying the detection process, and making the first light beam pass through the light guide column 105 to form a second light beam, thereby achieving a better focusing effect of the light spot and solving the problem of misjudgment defects caused by the divergence of the light source.

[0040] Preferably, the fixing seat 103 is installed on the lamp holder 101 and forms a light-emitting cavity 10a with the lamp holder 101, and the lamp board 102 is located on one side of the light-emitting cavity 10a; the multi-color concentric point light source 100 also includes a locking member 113 installed on the fixing seat 103, and the locking member 113 is arranged on the outer side of the diffuser plate 104 close to the light-emitting cavity 10a to limit the diffuser plate 104, and further, the locking member 113 has notches on both sides, and the locking member 113 can be easily taken out through the notches, so as to facilitate For installing and disassembling the locking member 113; further, the mounting portion 111 includes a mounting wall 131 and a mounting groove 132 provided in the mounting wall 131, and the lamp board 102 is installed in the mounting groove 132; the fixing seat 103 is also provided with a connecting wall 141 which is mutually engaged with the mounting wall 131, and the outer side of the mounting wall 131 is mutually engaged with the connecting wall 141; it can be understood that this structure enables the lamp holder 101 to be detachably connected to the fixing seat 103, and forms a clamping structure, which is convenient for the disassembly and assembly of the light source.

[0041] Preferably, both the mounting wall 131 and the connecting wall 141 are provided with fixing holes 142, and the multi-color concentric point light source 100 includes a fixing part 143 installed in the fixing hole 142; it can be understood that the fixing hole 142 in this embodiment is set as a screw hole, and the fixing part 143 adopts a locking screw, and the mounting wall 131 and the connecting wall 141 are locked to each other by spirally rotating the locking screw in the screw hole, so as to achieve a better clamping effect between the lamp holder 101 and the fixing holder 103; further, the projection of the lamp bead 112 coincides with the center of the diffuser plate 104. The purpose of this structure is to make the light emitted from different light-emitting chips 121 in the lamp bead 112 irradiate as much as possible to the center of the diffuser plate 104 so as to be evenly scattered by the diffuser plate 104.

[0042] Preferably, both the mounting wall 131 and the connecting wall 141 are provided with an electrical connection hole 144; the multi-color concentric point light source 100 also includes a wiring terminal 145 electrically connected to the lamp board 102 through the electrical connection hole 144, and the number of the wiring terminals 145 matches the number of the light-emitting chips 121. It can be understood that by connecting the three wiring terminals 145 to the three interfaces of the measuring device respectively, the switches of the three light-emitting chips 121 of different colors can be controlled; further, the top of the fixing seat 103 is also provided with a limiting column 146 for passing through the top of the fixing seat 103, and the limiting column 146 moves up and down by rotating at the top of the fixing seat 103 to abut against or move away from the light guide column 105, thereby limiting the light guide column 105; it can be understood that the limiting column 146 is set as a locking screw in this embodiment, and the screw rod of the locking screw can be It spirally rotates at the top of the fixed seat 103 to move up and down. When the limit column 146 rotates in the opposite direction to rise, the limit column 146 is away from the light guide column 105, and the light guide column 105 is movable in the fixed seat 103. When the limit column 146 rotates forward to descend, the limit column 146 abuts against the light guide column 105 and generates an interaction force on the light guide column 105 to fix the light guide column 105 in the fixed seat 103; in addition, the multi-color concentric point light source 100 in this embodiment also includes a heat conductive sheet 106, which is arranged at the bottom end of the mounting groove 132, and the bottom of the lamp board 102 is in contact with the heat conductive sheet 106, so as to further accelerate the transfer of working heat of the light-emitting chip 121 in the lamp bead 112. At the same time, the lamp holder 101 also includes a plurality of heat dissipation ribs 151 arranged on the outer wall, and any two adjacent heat dissipation ribs 151 are arranged at intervals to further promote the heat dissipation effect.

[0043] To sum up, the utility model provides a multi-color concentric point light source, which scatters the irradiation light of the light-emitting chip by setting a diffuser plate to form a first light beam, thereby solving the problem of unequal illumination of multiple light-emitting chips, so that the light distribution of the light-emitting chips at different positions of the lamp beads is uniform, and there is no need to replace the monochromatic light source for technical lighting. The first light beam passes through the light guide column and is focused by the light guide column to form a second light beam, so that the first light beam forms the second light beam after being focused by the light guide column, so that the focusing effect of the light spot is better, which solves the problem of misjudgment of defects caused by the divergence of the light source and improves the efficiency of the defect detection process.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multicolor concentric point light source, characterized in that: include: A lamp holder having a mounting portion; A light board is mounted on the mounting portion, a lamp bead is arranged on a side of the light board away from the mounting portion, and at least two light-emitting chips are arranged in the lamp bead; A fixing base, which is mutually engaged with the lamp holder; A light diffuser, mounted on the fixing seat and arranged opposite to the light panel; A light guide column is mounted on the fixing seat and is arranged on the other side of the light diffuser away from the light panel; Among them, the light of any one or more of the light-emitting chips is uniformly refracted to form a first light beam after passing through the diffuser plate, and the first light beam passes through the light guide column to form a second light beam and emits outward.

2. A multicolor concentric point light source according to claim 1, characterized in that: The fixing seat is installed on the lamp holder and forms a light-emitting cavity with the lamp holder, and the lamp board is located at one side of the light-emitting cavity; The multi-color concentric point light source also includes a locking member installed on the fixing seat, and the locking member is arranged on the outer side of the diffuser plate close to the light emitting cavity to limit the position of the diffuser plate.

3. A multicolor concentric point light source according to claim 1, characterized in that: The mounting portion includes a mounting wall and a mounting groove provided in the mounting wall, and the lamp panel is mounted in the mounting groove; The fixing seat is further provided with a connecting wall which is mutually engaged with the installation wall, and the outer side of the installation wall is mutually engaged with the connecting wall.

4. A multicolor concentric point light source according to claim 3, characterized in that: The installation wall and the connecting wall are both provided with fixing holes, and the multi-color concentric point light source includes fixing parts installed in the fixing holes.

5. The multicolor concentric point light source according to claim 1, characterized in that: The projection of the lamp bead coincides with the center of the light diffusion plate.

6. The multicolor concentric point light source according to claim 3, characterized in that: The installation wall and the connection wall are both provided with electrical connection holes; The multi-color concentric point light source further includes connection terminals electrically connected to the light board through the electrical connection holes, and the number of the connection terminals matches the number of the light-emitting chips.

7. The multicolor concentric point light source according to claim 1, characterized in that: The top of the fixing seat is also provided with a limiting column for penetrating the top of the fixing seat. The limiting column moves up and down on the top of the fixing seat by rotating to abut against or away from the light guide column, thereby limiting the light guide column.

8. The multicolor concentric point light source according to claim 3, characterized in that: The multi-color concentric point light source also includes a heat conductive sheet, which is arranged at the bottom end of the mounting groove, and the bottom of the lamp board is in contact with the heat conductive sheet.

9. The multicolor concentric point light source according to claim 1, characterized in that: The lamp holder further comprises a plurality of heat dissipation ribs arranged on the outer side wall, and any two adjacent heat dissipation ribs are arranged at intervals.

10. The multi-color concentric point light source according to claim 1, characterized in that: The number of the light emitting chips is set to three.

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