A surface light source with good heat dissipation

Abstract

The utility model discloses a surface light source with good heat dissipation, including sheet metal casing, the sheet metal casing includes setting at the bottom bottom panel, the bottom panel side vertical bending forms first side plate, second side plate, third side plate and fourth side plate, the bottom panel, first side plate, second side plate, third side plate and fourth side plate inside form the accommodation chamber, the accommodation chamber inside is equipped with LED lamp board and diffuser plate, the LED lamp board is equipped with a plurality of LED lamps, the bottom panel lower part is equipped with the heat dissipation group piece, the heat dissipation group piece includes a plurality of equips in the bottom panel lower part horizontal heat dissipation fin and longitudinal heat dissipation fin, a plurality of horizontal heat dissipation fins interval horizontal arrangement, a plurality of longitudinal heat dissipation fins interval longitudinal arrangement between horizontal heat dissipation fin, the heat of light source in the utility model can be quickly transferred to sheet metal casing, and timely heat dissipation makes light source emit the light of high uniformity outward.

Description

Technical Field

[0001] This utility model relates to the field of surface light source technology, and in particular to a surface light source with good heat dissipation performance. Background Technology

[0002] In the field of industrial automation, machine vision systems are widely used in product inspection, dimensional measurement, character recognition, positioning and guidance, and other processes. The light source, as the "eye" of the machine vision system, directly determines the image quality and the accuracy of the entire system through its intensity, uniformity, and stability.

[0003] Bottom light sources are a common type of visual light source. Their light shines from below the object and is often used to detect impurities within transparent objects, the outlines of opaque objects, surface scratches, or for QR code recognition. Traditional bottom light sources typically use plastic as the casing. This traditional structure has significant drawbacks: while plastic casings are inexpensive, their heat dissipation performance is poor. During prolonged operation, the light source generates a large amount of heat, which the plastic casing cannot dissipate quickly enough. This causes the internal temperature of the light source to rise, reducing its luminous efficiency and light stability, significantly shortening its lifespan, and increasing user costs and maintenance frequency. To improve the heat dissipation of the plastic casing, additional heat dissipation structures, such as heat sinks or fans, are needed, which not only increases the overall cost but also complicates the product design. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of poor heat dissipation in the prior art and provide a surface light source with good heat dissipation performance. The heat generated by the light source can be quickly transferred to the sheet metal housing and dissipated in time, so that the light source emits light with high uniformity. At the same time, it has high mechanical strength and reduces manufacturing costs.

[0005] To achieve the above objectives, this utility model provides a surface light source with good heat dissipation performance, including a sheet metal housing. The sheet metal housing includes a bottom panel disposed at the bottom. The sides of the bottom panel are vertically bent to form a first side panel, a second side panel, a third side panel, and a fourth side panel. An accommodating cavity is formed inside the bottom panel, the accommodating cavity is equipped with an LED light board and a diffuser plate. The LED light board is mounted on the bottom panel, the diffuser plate is mounted on the upper part of the LED light board, and a plurality of LEDs are mounted on the LED light board. A heat dissipation assembly is mounted on the lower part of the bottom panel. The heat dissipation assembly includes a plurality of horizontal heat dissipation fins and a plurality of vertical heat dissipation fins mounted on the lower part of the bottom panel. The plurality of horizontal heat dissipation fins are arranged horizontally at intervals, and the plurality of vertical heat dissipation fins are arranged vertically at intervals between the horizontal heat dissipation fins.

[0006] Preferably, both the horizontal and vertical heat sinks are provided with a plurality of first protrusions, which are arranged in sequence at intervals; the bottom panel is provided with a first receiving groove adapted to the first protrusions, and the first protrusions are inserted into the first receiving groove.

[0007] Preferably, the bottom panel is provided with a plurality of first threaded holes, and the LED light board is provided with a plurality of first through holes corresponding to the first threaded holes; the LED light board and the bottom panel are fixedly connected together by bolts.

[0008] Preferably, the LED light panel is electrically connected to a power cord, which passes through the first side plate and is electrically connected to the LED light panel. The power cord provides power to the LED light panel to drive the light emitted by the LED light. The light emitted by the LED light passes through the receiving chamber and the diffuser plate and is emitted outward.

[0009] Preferably, the first side plate, the second side plate, the third side plate and the fourth side plate are provided with reflective paper on the inner side of the receiving cavity to reflect the light emitted by the LED lamp.

[0010] Preferably, the LED light panel is in contact with the bottom panel via a thermally conductive silicone pad at the bottom.

[0011] Preferably, the ends of the first, second, third, and fourth side plates are all bent toward the interior of the receiving cavity to form bending limiting ends; the vertical height of the first, second, and third side plates is higher than the vertical height of the fourth side plate; a support plate is installed on one side of the first, second, and third side plates toward the receiving cavity; a groove is formed between the bending limiting end and the support plate; the diffuser plate is inserted into the groove; the bottom of the diffuser plate is supported by the support plate and the bending limiting end of the fourth side plate; and the upper part is limited by the bending limiting ends of the first, second, and third side plates.

[0012] Preferably, the bending limiting end of the fourth side plate is provided with a plurality of second threaded holes, and the diffuser plate is provided with a plurality of countersunk through holes corresponding to the second threaded holes; the diffuser plate and the bending limiting end of the fourth side plate are fixedly connected together by bolts.

[0013] Preferably, the support plate is provided with a plurality of second protrusions, which are arranged in sequence at intervals; the first side plate, the second side plate and the third side plate are provided with second receiving grooves adapted to the second protrusions, and the second protrusions are inserted into the second receiving grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The bottom panel, first side panel, second side panel, third side panel, and fourth side panel of this invention are vertically bent to form a receiving cavity. An LED light panel and a diffuser plate are installed inside the receiving cavity. The LED light panel is mounted on the bottom panel, allowing direct heat transfer to the bottom panel. Heat is also dissipated through the first, second, third, and fourth side panels and through heat dissipation fins on the bottom. These heat dissipation fins, located on the lower surface of the bottom panel, include horizontal and vertical heat dissipation fins arranged perpendicularly to each other, enhancing overall heat dissipation performance and effectively reducing heat accumulation during LED light panel operation. This results in highly uniform light emission from the LED lights. Furthermore, reflective paper further improves light utilization, preventing light absorption or scattering within the receiving cavity and thus avoiding waste. The sheet metal housing enhances the structural strength and stability of the surface light source, ensuring the overall device remains stable during long-term operation. The sheet metal material also possesses good thermal conductivity, further aiding heat dissipation and reducing manufacturing costs. Attached Figure Description

[0016] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front structural diagram of a surface light source with good heat dissipation performance provided by this utility model;

[0018] Figure 2 This is a schematic diagram of the bottom structure of a surface light source with good heat dissipation performance provided by this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of a surface light source with good heat dissipation performance provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the heat dissipation fins provided by this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of a surface light source with good heat dissipation performance for removing diffuser plates provided by this utility model;

[0022] Figure 6 This is a structural schematic diagram of the sheet metal housing provided by this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the support plate provided by this utility model.

[0024] The diagram includes:

[0025] 1. Sheet metal housing; 11. Bottom panel; 12. First side panel; 13. Second side panel; 14. Third side panel; 15. Fourth side panel; 2. Receiving chamber; 3. LED light panel; 4. Diffuser panel; 5. LED light; 6. Heat sink assembly; 61. Horizontal heat sink; 62. Vertical heat sink; 63. First protrusion; 111. First receiving groove; 112. First threaded hole; 31. First through hole; 7. Power cord; 8. Bending limit end; 16. Support plate; 17. Slot; 151. Second threaded hole; 41. Countersunk through hole; 161. Second protrusion; 121. Second receiving groove. Detailed Implementation

[0026] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please refer to Figures 1 to 7 This invention provides a surface light source with good heat dissipation performance.

[0028] like Figure 1 As shown, the surface light source has a cubic structure, including an outer sheet metal housing 1, as... Figure 6 As shown, the sheet metal housing 1 is made of 1.2mm thick aluminum alloy sheet through a stamping and bending process, and has good structural strength and thermal conductivity.

[0029] The sheet metal housing 1 includes a bottom panel 11 and a first side panel 12, a second side panel 13, a third side panel 14, and a fourth side panel 15 perpendicularly connected to the bottom panel 11. The bottom panel 11 and the side panels enclose a receiving chamber 2 for accommodating the LED light panel 3 and the diffuser plate 4. The LED light panel 3 is fixedly mounted on the bottom panel 11 and has multiple evenly distributed LED lights 5. The diffuser plate 4 covers the LED light panel 3 and is tightly fitted to the upper edge of each side panel to ensure uniform light diffusion.

[0030] To further improve heat dissipation efficiency, the LED light panel 3 is in close contact with the bottom panel 11, which can quickly conduct heat to the bottom panel 11, thereby achieving efficient heat diffusion. In addition, the first side panel 12, the second side panel 13, the third side panel 14, and the fourth side panel 15 on the side of the bottom panel 11 can achieve efficient heat conduction between the metal and the air, thereby reducing the temperature of the LED light panel 3 and the bottom panel 11.

[0031] To further improve heat dissipation efficiency, a heat dissipation plate 6 is installed on the lower part of the bottom panel 11. The heat dissipation plate 6 includes several horizontal heat dissipation plates 61 and vertical heat dissipation plates 62 installed on the lower part of the bottom panel 11. The multiple horizontal heat dissipation plates 61 are arranged in parallel with each other and are arranged horizontally at intervals. The vertical heat dissipation plates 62 are vertically crisscrossed between each horizontal heat dissipation plate 61 to form a grid-like heat dissipation structure, thereby effectively increasing the heat dissipation area and improving the turbulence of airflow, thereby enhancing the overall heat dissipation effect.

[0032] Furthermore, a cooling fan can be added inside the mesh-like heat dissipation structure. This fan is installed below the bottom panel 11 and integrated with the heat sink 6. The active airflow from the fan accelerates heat dissipation from the bottom panel 11 and the heat sink 6, further improving heat dissipation efficiency. Simultaneously, the fan's start and stop can be intelligently controlled based on the overall temperature changes of the surface light source, achieving energy-saving operation. This design allows the surface light source to maintain a stable operating temperature even under high-power operation, effectively extending the lifespan of the LED light board 3 and improving the reliability and safety of the equipment.

[0033] like Figure 4 As shown, both the horizontal heat sink 61 and the vertical heat sink 62 are provided with a plurality of first protrusions 63, which are arranged in sequence at intervals; the bottom panel 11 is provided with a first receiving groove 111 adapted to the first protrusions 63, and the first protrusions 63 are inserted into the first receiving groove 111.

[0034] The first protrusion 63 and the upper surfaces of the horizontal heat sink 61 and the vertical heat sink 62 are completely attached to and in close contact with the lower surface of the bottom panel 11. This plug-in structure design makes the connection between the horizontal heat sink 61 and the vertical heat sink 62 and the bottom panel 11 more compact, enhancing the stability and efficiency of the heat conduction path.

[0035] In addition, in this embodiment, the first protrusion 63 can be interference-fitted into the first receiving groove 111 to ensure the reliability of the connection; in other embodiments, the first protrusion 63 can also be fixed in the first receiving groove 111 by welding or bonding, thereby realizing a stable connection between the horizontal heat sink 61 and the vertical heat sink 62 and the bottom panel 11, and effectively improving the heat conduction efficiency.

[0036] like Figure 3 As shown, in order to achieve close contact between the lower surface of the LED light board 3 and the upper surface of the bottom panel 11, a thermally conductive silicone pad can be provided between the lower surface of the LED light board 3 and the upper surface of the bottom panel 11. The thermally conductive silicone pad has good thermal conductivity and elasticity, which can effectively fill the tiny gap between the two, ensuring that heat can be efficiently conducted to the bottom panel 11, and further improving the overall heat dissipation efficiency.

[0037] At the same time, such as Figure 5 As shown, to securely fix the LED light board 3 to the bottom panel 11, bolts can be used to connect the LED light board 3 and the bottom panel 11. Specifically, the bottom panel 11 has several first threaded holes 112, and the LED light board 3 has several first through holes 31 corresponding to the first threaded holes 112. The LED light board 3 and the bottom panel 11 are fixedly connected together by bolts. Through the above structural design, not only is a stable connection between the LED light board 3 and the bottom panel 11 achieved, but also good thermal conductivity between the two is ensured.

[0038] In addition, the thickness of the thermally conductive silicone pad can be adjusted according to actual assembly requirements to ensure that it can still maintain sufficient elastic deformation after the LED light board 3 is locked, thereby providing continuous preload and further improving the stability of heat conduction.

[0039] like Figure 1 As shown, the LED light panel 3 is electrically connected to the power cord 7. The power cord 7 passes through the first side plate 12 and is electrically connected to the LED light panel 3. The power cord 7 provides power to the LED light panel 3 to drive the light emitted by the LED light 5. The light emitted by the LED light 5 passes through the receiving chamber 2 and the diffuser plate 4 and is emitted outward.

[0040] To further improve the uniformity and softness of the light, reflective paper can be attached to the first side plate 12, the second side plate 13, the third side plate 14, and the fourth side plate 15 on the inner side of the receiving chamber 2 to reflect the light emitted by the LED lamp 5. The reflective paper not only effectively improves light utilization but also reduces light scattering loss within the receiving chamber 2, resulting in a more uniform and softer light distribution. Through this structural design, the light emitted by the LED lamp panel 3 is reflected multiple times by the reflective paper and then evenly enters the diffuser plate 4. The diffuser plate 4 further diffuses the light, making the final emitted light softer and more natural, avoiding obvious bright spots or dark areas. Furthermore, the high reflectivity of the reflective paper effectively reduces energy consumption and improves the overall luminous efficiency of the lamp.

[0041] like Figure 5 As shown, the ends of the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 are all bent into the cavity 2 to form bending limiting ends 8; there are four bending limiting ends 8, which are respectively set at the ends of the four side plates and are used to limit or support the diffuser plate 4.

[0042] like Figure 5 As shown, the vertical height of the first side plate 12, the second side plate 13 and the third side plate 14 is higher than the vertical height of the fourth side plate 15, thus having a height difference, which can accommodate the diffuser plate 4. The bending limiting end 8 of the first side plate 12, the second side plate 13 and the third side plate 14 limits the upper surface of the diffuser plate 4, while the bending limiting end 8 of the fourth side plate 15 limits the lower surface of the diffuser plate 4.

[0043] The upper structure alone is not enough to fully support and limit the diffuser plate 4. Therefore, a support plate 16 is also provided at the bottom of the diffuser plate 4. Specifically, the first side plate 12, the second side plate 13 and the third side plate 14 are all equipped with support plates 16 on the side of the receiving chamber 2. The support plates 16 and the bending limiting end 8 work together to form a slot 17 for inserting the diffuser plate 4.

[0044] Specifically, the bottom of the diffuser plate 4 is supported by the support plate 16 and the bending limiting end 8 of the fourth side plate 15, and the upper part is limited by the bending limiting end 8 of the first side plate 12, the second side plate 13 and the third side plate 14.

[0045] The above structural design can only limit the displacement of the diffuser plate 4 in the absence of external force. However, in actual use, the influence of external factors still needs to be considered, so the diffuser plate 4 needs to be firmly fixed. To this end, two second threaded holes 151 are provided on the bending limiting end 8 of the fourth side plate 15, and two countersunk through holes 41 corresponding to the second threaded holes 151 are provided on the diffuser plate 4. Bolts are passed through the countersunk through holes 41 and tightened into the second threaded holes 151, thereby firmly fixing the diffuser plate 4 to the bending limiting end 8 of the fourth side plate 15. This fixing method is not only stable and reliable, but also effectively prevents the diffuser plate 4 from loosening or shifting due to external vibration or temperature changes.

[0046] like Figure 6 and Figure 7 As shown, the installation method of the support plate 16 is the same as that of the horizontal heat sink 61 and the vertical heat sink 62, both using an insertion fixing method. Specifically, the support plate 16 has several second protrusions 161 arranged at intervals. Second receiving grooves 121, matching the second protrusions 161, are formed on the first side plate 12, the second side plate 13, and the third side plate 14, and the second protrusions 161 are inserted into the second receiving grooves 121. Through this insertion connection structure, the support plate 16 can be securely installed on the side plates and is easy to disassemble, facilitating later maintenance and replacement.

[0047] Meanwhile, in this embodiment, the second protrusion 161 and the second receiving groove 121 are subjected to an interference fit, which further enhances the tightness and reliability of the connection.

[0048] In other embodiments, the second protrusion 161 can also be fixed in the second receiving groove 121 by welding or bonding, thereby achieving a stable connection.

[0049] The manufacturing steps of the surface light source;

[0050] Step S1: The first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 on the four sides of the bottom panel 11 are bent vertically upward to form the receiving chamber 2;

[0051] Step S2: The ends of the first side plate 12, the second side plate 13, the third side plate 14 and the fourth side plate 15 are bent into the receiving chamber 2 to form a bending limiting end 8; wherein, the vertical height of the first side plate 12, the second side plate 13 and the third side plate 14 is higher than the vertical height of the fourth side plate 15, thus having a height difference, which facilitates the later formation of a slot 17 for accommodating the diffuser plate 4;

[0052] Step S3: The horizontal heat sink 61 and the vertical heat sink 62 are installed on the lower part of the bottom panel 11. Multiple horizontal heat sinks 61 are arranged in parallel to each other and are arranged horizontally at intervals. The vertical heat sinks 62 are vertically connected to each horizontal heat sink 61 to form a grid-like heat dissipation structure. The first protrusion 63 is inserted into the first receiving groove 111 to complete the assembly of the heat dissipation assembly 6.

[0053] Step S4: The LED light panel 3 and the bottom panel 11 are fixedly connected together by bolts. The power cord 7 passes through the first side panel 12 and is electrically connected to the LED light panel 3. The power cord 7 provides power to the LED light panel 3 to drive the light emitted by the LED light 5.

[0054] Step S5: Install support plates 16 on the sides of the first side plate 12, the second side plate 13 and the third side plate 14. The second protrusion 161 is inserted into the second receiving groove 121 to fix the support plate 16. The support plate 16 and the bending limiting end 8 work together to form a slot 17 for inserting the diffuser plate 4.

[0055] Step S6: Insert the diffuser plate 4 into the slot 17. The bottom of the diffuser plate 4 is supported by the support plate 16 and the bending limiting end 8 of the fourth side plate 15, and the upper part is limited by the bending limiting end 8 of the first side plate 12, the second side plate 13 and the third side plate 14.

[0056] Step S7: Fix the diffuser plate 4 by passing a bolt through the countersunk hole 41 and tightening it with the second threaded hole 151, thereby firmly fixing the diffuser plate 4 to the bending limiting end 8 of the fourth side plate 15.

[0057] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A surface light source with good heat dissipation performance, characterized in that: The device includes a sheet metal housing (1), which includes a bottom panel (11) disposed at the bottom. The bottom panel (11) is vertically bent to form a first side panel (12), a second side panel (13), a third side panel (14), and a fourth side panel (15). The bottom panel (11), the first side panel (12), the second side panel (13), the third side panel (14), and the fourth side panel (15) form a receiving chamber (2). The receiving chamber (2) is equipped with an LED light panel (3) and a diffuser panel (4). The LED light board (3) is mounted on the bottom panel (11), the diffuser plate (4) is mounted on the upper part of the LED light board (3), the LED light board (3) is equipped with a number of LED lights (5), the bottom panel (11) is equipped with a heat sink (6) at the bottom, the heat sink (6) includes a number of horizontal heat sinks (61) and vertical heat sinks (62) mounted at the bottom of the bottom panel (11), the number of horizontal heat sinks (61) are arranged horizontally at intervals, and the number of vertical heat sinks (62) are arranged vertically at intervals between the horizontal heat sinks (61).

2. A surface light source with good heat dissipation performance according to claim 1, characterized in that: Both the horizontal heat sink (61) and the vertical heat sink (62) are provided with a plurality of first protrusions (63), which are arranged in sequence at intervals; the bottom panel (11) is provided with a first receiving groove (111) that is adapted to the first protrusions (63), and the first protrusions (63) are inserted into the first receiving groove (111).

3. A surface light source with good heat dissipation performance according to claim 1, characterized in that: The bottom panel (11) is provided with a plurality of first threaded holes (112), and the LED light board (3) is provided with a plurality of first through holes (31) corresponding to the first threaded holes (112); the LED light board (3) and the bottom panel (11) are fixedly connected together by bolts.

4. A surface light source with good heat dissipation performance according to claim 3, characterized in that: The LED light panel (3) is electrically connected to the power cord (7). The power cord (7) passes through the first side plate (12) and is electrically connected to the LED light panel (3). The power cord (7) provides power to the LED light panel (3) and drives the light emitted by the LED light (5). The light emitted by the LED light (5) passes through the receiving chamber (2) and the diffuser plate (4) and shines outward.

5. A surface light source with good heat dissipation performance according to claim 4, characterized in that: The first side plate (12), the second side plate (13), the third side plate (14) and the fourth side plate (15) are covered with reflective paper on the inside of the receiving chamber (2) to reflect the light emitted by the LED lamp (5).

6. A surface light source with good heat dissipation performance according to claim 1, characterized in that: The LED light panel (3) is in contact with the bottom panel (11) through the lower thermally conductive silicone pad.

7. A surface light source with good heat dissipation performance according to claim 1, characterized in that: The ends of the first side plate (12), the second side plate (13), the third side plate (14) and the fourth side plate (15) are all bent into the receiving chamber (2) to form a bending limiting end (8); the vertical height of the first side plate (12), the second side plate (13) and the third side plate (14) is higher than the vertical height of the fourth side plate (15). The first side plate (12), the second side plate (13) and the third side plate (14) are all equipped with a support plate (16) on one side of the receiving chamber (2). A groove (17) is formed between the bending limiting end (8) and the support plate (16). The diffuser plate (4) is inserted into the groove (17). The bottom of the diffuser plate (4) is supported by the support plate (16) and the bending limiting end (8) of the fourth side plate (15), and the upper part is limited by the bending limiting end (8) of the first side plate (12), the second side plate (13) and the third side plate (14).

8. A surface light source with good heat dissipation performance according to claim 7, characterized in that: The bending limiting end (8) of the fourth side plate (15) is provided with a number of second threaded holes (151), and the diffuser plate (4) is provided with a number of countersunk through holes (41) corresponding to the second threaded holes (151); the diffuser plate (4) and the bending limiting end (8) of the fourth side plate (15) are fixedly connected together by bolts.

9. A surface light source with good heat dissipation performance according to claim 7, characterized in that: The support plate (16) is provided with a plurality of second protrusions (161), which are arranged in sequence at intervals; the first side plate (12), the second side plate (13) and the third side plate (14) are provided with second receiving grooves (121) that are adapted to the second protrusions (161), and the second protrusions (161) are inserted into the second receiving grooves (121).

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