Mining lamp

Abstract

The utility model discloses a mining lamp which comprises a lamp shell, a circuit board, a reflecting cover and a sealing plate, the circuit board, the reflecting cover and the sealing plate are arranged in the lamp shell, a plurality of lamp beads are arranged on the circuit board, and the mining lamp is characterized in that a radiating fin and a sealing cover capable of being pressed on the radiating fin are arranged on the back face of the circuit board, and a first pressing rivet bolt and a second pressing rivet bolt are arranged on the circuit board in a penetrating mode. The first pressing rivet bolt is in threaded connection with an inner threaded pipe penetrating out of the sealing cover, the upper end of the inner threaded pipe is provided with a nut capable of being pressed on the sealing cover, the second pressing rivet bolt is provided with a first through hole allowing an electric wire of the circuit board to penetrate through, and the sealing cover is provided with a second through hole allowing the electric wire to penetrate through. When the mining lamp works, heat emitted by the lamp bead is directly transmitted to the outside through the circuit board and the cooling fins, the heat conduction link is reduced, the heat resistance is lower, heat dissipation is facilitated, the cooling effect of the mining lamp is better, the nut tightly presses the sealing cover, the cooling fins and the circuit board are fixed through the first pressing rivet bolt, the inner threaded pipe, the nut and the sealing cover, and the service life of the mining lamp is prolonged. And the connection structure of the circuit board and the radiating fin is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to an industrial and mining lamp. Background Art

[0002] Lamps are a general term for lighting tools, which are divided into chandeliers, table lamps, wall lamps, floor lamps, etc. For example, Chinese utility model patent application number CN202323520096.8 discloses a disc lighting lamp that is easy to install, which relates to the technical field of lighting lamps. The utility model includes a mounting plate, a mounting box is provided at the bottom of the mounting plate, a lampshade is provided at the bottom of the mounting box, and the lighting lamp body is provided in the lampshade. Fixed blocks are installed on opposite sides of the mounting box, and a clamping block is slidably fitted in the fixed block. Buckles are installed on opposite sides of the mounting plate, and the clamping block is clamped to the buckle. A connecting ring is installed at the bottom of the mounting box, a fixing frame is installed on the lampshade, and an L-shaped block is installed on the fixing frame. The L-shaped block cooperates with the connecting ring. In actual use, the heat generated by the LED light panel of this type of industrial and mining lamp can only be dissipated through the installation box and lampshade, and the heat dissipation effect is poor. A large amount of heat is still in the installation box and lampshade, causing the temperature inside the installation box and lampshade to become higher and higher. Some industrial and mining lamps are equipped with a heat dissipation structure on the lamp shell, but this structure has many heat conduction links, high thermal resistance, and poor heat dissipation effect. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a mining lamp with better heat dissipation effect.

[0004] To this end, the present invention is achieved by adopting the following technical solutions:

[0005] A mining lamp comprises a lamp housing and a circuit board, a reflector and a cover plate arranged in the lamp housing, wherein a plurality of lamp beads are arranged on the circuit board. The lamp is characterized in that: a heat sink and a cover that can be pressed onto the heat sink are provided on the back of the circuit board; a first self-clinching bolt and a second self-clinching bolt are passed through the circuit board; the first self-clinching bolt is screwed with an internally threaded tube that passes through the cover; the upper end of the internally threaded tube has a nut that can be pressed onto the cover; the second self-clinching bolt is provided with a first through hole for allowing the wires of the circuit board to pass through; and the cover is provided with a second through hole for allowing the wires to pass through.

[0006] Furthermore, a connecting plate is provided at the lower end of the circuit board, and a third through hole is provided on the connecting plate for allowing the riveted parts of the first and second rivet bolts to pass through respectively. When the first and second rivet bolts are compressed, their rivet parts are deformed to clamp the connecting plate between the deformed riveted parts and the circuit board.

[0007] Furthermore, the heat sink is provided with a number of upwardly protruding ribs, and a first ventilation duct is formed between adjacent ribs. The ribs are provided with heat dissipation holes along their length directions, and the heat dissipation holes form a second ventilation duct. A clearance hole is provided in the center of the heat sink, and the cover is provided in the clearance hole, and a limiting ring is provided on the outer ring of the upper end of the cover to press on the upper end of the rib.

[0008] Furthermore, the heat sink is an integrally formed metal sheet, and the convex strips are straight or wavy.

[0009] Furthermore, the heat sink is bonded to the circuit board by glue.

[0010] Furthermore, the circuit board is an aluminum substrate, which is composed of a conductive layer, an insulating layer and an aluminum plate from top to bottom, and the heat sink and the aluminum plate are welded by laser.

[0011] Furthermore, the lamp housing is in a circular ring shape, and a ring seat that bulges upward is provided in the lamp housing, and the outer ring of the front side of the circuit board is bonded to the ring seat by glue.

[0012] Furthermore, a panel surrounding the heat sink and the ridges is provided on the back of the lamp housing, a gap is provided between the panel and the heat sink, and a plurality of air holes communicating with the first ventilation duct and the heat dissipation through-holes are provided on the panel.

[0013] Furthermore, the internal threaded tube is screwed with a hanging ring, the reflector is provided between the circuit board and the sealing plate for reflecting the light emitted by the lamp beads, and the sealing plate is bonded to the lamp housing by glue.

[0014] After adopting the above technical solution, the heat sink is directly arranged on the back of the circuit board. When the industrial and mining lamp is working, the heat emitted by the lamp beads is directly transferred to the outside through the circuit board and the heat sink, which reduces the heat conduction link, has lower thermal resistance, and is convenient for heat dissipation, so that the heat dissipation effect of the industrial and mining lamp is better. After the heat sink is placed on the back of the circuit board, a cover is placed to press the heat sink, and then the internal threaded tube is screwed into the upper part of the first rivet bolt to tighten the cover with the nut. The heat sink and the circuit board are fixed by the first rivet bolt, the internal threaded tube, the nut and the cover, so that the connection structure of the circuit board and the heat sink is more stable. The second rivet bolt, the first through hole and the second through hole are used to pass the wires of the circuit board. The cover can cover part of the wires and the wiring structure, making the industrial and mining lamp more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model has the following drawings:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the lamp housing in the utility model;

[0018] Figure 3 It is a top view of the utility model;

[0019] Figure 4 for Figure 3 Middle AA section view.

[0020] Figure numerals: 1. lamp housing; 2. circuit board; 3. reflector; 4. sealing plate; 5. heat sink; 6. sealing cover; 7. first self-clinching bolt; 8. second self-clinching bolt; 9. internal threaded tube; 10. nut; 11. first through hole; 12. second through hole; 13. connecting plate; 14. third through hole; 15. convex strip; 16. first ventilation duct; 17. heat dissipation through hole; 18. clearance through hole; 19. limiting ring; 20. annular seat; 21. enclosure; 22. gap; 23. air vent; 24. lifting ring; 25. electric wire. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0022] With reference to the above-mentioned drawings, the utility model provides a mining lamp comprising a lamp housing 1 and a circuit board 2, a reflector 3 and a cover 4 arranged in the lamp housing 1. A plurality of lamp beads are arranged on the circuit board 2. The characteristics are as follows: the back of the circuit board 2 is provided with a heat sink 5 and a cover 6 that can be pressed on the heat sink 5. The circuit board 2 is penetrated by a first pressure rivet bolt 7 and a second pressure rivet bolt 8. The first pressure rivet bolt 7 is screwed with an internal threaded tube 9 that passes through the cover 6. The upper end of the internal threaded tube 9 has a nut 10 that can be pressed on the cover 6. The second pressure rivet bolt 8 is provided with a first passage for allowing the wire 25 of the circuit board 2 to pass through. Hole 11, the cover 6 is provided with a second through hole 12 for the wire 25 to pass through, the lower end of the circuit board 2 is provided with a connecting plate 13, and the connecting plate 13 is respectively provided with a third through hole 14 for the riveted portion of the first pressure rivet bolt 7 and the second pressure rivet bolt 8 to pass through. After the first pressure rivet bolt 7 and the second pressure rivet bolt 8 are compressed, the riveted portion thereof is deformed to clamp the connecting plate 13 between the deformed riveted portion and the circuit board 2, the heat sink 5 is provided with a plurality of upwardly protruding ribs 15, and a first ventilation duct 16 is formed between adjacent ribs 15, and the ribs 15 are penetrated with a heat dissipation through hole 17 along the length direction thereof, and the heat dissipation through hole 1 7 forms a second ventilation duct, the center of the heat sink 5 is provided with a clearance through hole 18, the cover 6 is provided in the clearance through hole 18, and the outer ring of the upper end of the cover 6 is provided with a limit ring 19 pressed on the upper end of the ridge 15, the heat sink 5 is an integrally formed metal sheet, the ridge 15 is straight or wavy, the heat sink 5 is bonded to the circuit board 2 by glue, the circuit board 2 is an aluminum substrate, and the aluminum substrate is composed of a conductive layer, an insulating layer and an aluminum plate from top to bottom (the orientation when the lamp beads are facing upward), the lamp beads are electrically connected to the conductive layer, the heat sink 5 and the aluminum plate are laser welded, and the lamp housing 1 It is in the shape of a ring, and a circle of upwardly raised annular seat 20 is provided in the lamp housing 1. The outer circle of the front side of the circuit board 2 is glued to the annular seat 20, and the back side of the lamp housing 1 is provided with a circle of enclosure 21 surrounding the heat sink 5 and the ridge 15. There is a gap 22 between the enclosure 21 and the heat sink 5, and the enclosure 21 is provided with a number of air holes 23 communicating with the first ventilation duct 16 and the heat dissipation through-hole 17. The internal threaded tube 9 is screwed with a hanging ring 24. The reflector 3 is provided between the circuit board 2 and the sealing plate 4 for reflecting the light emitted by the lamp beads, and the sealing plate 4 is bonded to the lamp housing 1 by glue.

[0023] In this embodiment, the heat sink 5 is directly arranged on the back of the circuit board 2. When the mining lamp is working, the heat emitted by the lamp beads is directly transferred to the outside through the circuit board 2 and the heat sink 5, which reduces the heat conduction link, has lower thermal resistance, is convenient for heat dissipation, and makes the heat dissipation effect of the mining lamp better. After the heat sink 5 is placed on the back of the circuit board 2, the cover 6 is placed to press the heat sink 5, and then the internal threaded tube 9 is screwed into the upper part of the first pressure rivet bolt 7, so that the nut 10 presses the cover 6. The heat sink 5 and the circuit board 2 are fixed by the first pressure rivet bolt 7, the internal threaded tube 9, the nut 10 and the cover 6, so that the connection structure between the circuit board 2 and the heat sink 5 is more stable. The second pressure rivet bolt 8, the first through hole 11 and the second through hole 12 are provided for passing the wires 25 of the circuit board 2. The cover 6 can cover part of the wires 25 and the wiring structure, making the mining lamp more beautiful.

[0024] The arrangement of the connecting plate 13 makes the connection structure between the first and second pressure rivet bolts 7 and 8 and the circuit board 2 more stable and firm. The connecting plate 13 can increase the thickness and post-intersection strength of the riveted position, share the force, and prevent the circuit board 2 from being subjected to excessive force.

[0025] The first ventilation duct 16 formed between adjacent ridges 15 and the second ventilation duct formed by the heat dissipation through-holes 17 greatly increase the contact area between the ridges 15 and the air and wind, allowing the heat sink to quickly dissipate the heat generated by the lamp beads, thereby achieving rapid cooling of the lamp beads and better heat dissipation effect, while also reducing light decay and extending the service life of the lamp. The heat sink 5 is an integrally formed metal sheet, which conducts and dissipates heat more evenly. The wavy ridges 15 can increase the contact area between the ridges 15 and the air and wind, further enhancing the heat dissipation effect.

[0026] The heat sink 5 can be bonded to the circuit board 2 by glue. After the heat sink 5 is bonded to the circuit board 2 by glue, the heat sink 5 is fixed by the cover 6, so that the heat sink 5 has a double fixation and the structure is more stable and firm. The heat sink 5 and the aluminum substrate type circuit board 2 can be laser welded. The two are in direct contact, which further reduces the heat conduction link and makes the heat dissipation effect of the industrial and mining lamp better. The heat sink 5 is fixed to the circuit board 2 by laser welding and then fixed by the cover 6. The heat sink 5 has a double fixation and the structure is more stable and firm.

[0027] The lamp housing 1 is annular and the front of the circuit board 2 is glued to the annular seat 20 by glue, so that the heat of the circuit board 2 does not need to pass through a layer of shell, but is directly transferred to the outside through the heat sink 5. A circle of panels 21 surrounds the heat sink 5 and the ridges 15 on the back of the shell, effectively preventing the heat sink from hurting people or objects, while protecting the heat sink 5 and the ridges 15, which is safer and more beautiful. The heat sink 5 can be made thinner after being protected by the panels 21, reducing costs. The setting of the gap 22 avoids blocking the first ventilation duct 16 and the second ventilation duct to ensure normal heat dissipation of the first ventilation duct 16 and the second ventilation duct. The setting of the air vent 23 is conducive to convection between the heat sink 5 and the outside to ensure the heat dissipation effect. The internal threaded tube 9 can also be used to screw the hanging ring 24 to be used as a chandelier.

Claims

1. A mining lamp comprising a lamp housing, a circuit board disposed within the lamp housing, a reflector, and a sealing plate, wherein the circuit board is provided with a plurality of lamp beads, and wherein: A heat sink and a cover that can be pressed onto the heat sink are provided on the back of the circuit board. A first self-clinching bolt and a second self-clinching bolt are passed through the circuit board. The first self-clinching bolt is screwed onto an internal threaded tube that passes through the cover. A nut that can be pressed onto the cover is provided at the upper end of the internal threaded tube. The second self-clinching bolt is provided with a first through hole for allowing the wires of the circuit board to pass through. The cover is provided with a second through hole for allowing the wires to pass through.

2. The mining lamp according to claim 1, characterized in that: A connecting plate is provided at the lower end of the circuit board, and a third through hole is provided on the connecting plate for allowing the riveted parts of the first and second pressure rivet bolts to pass through respectively. When the first and second pressure rivet bolts are compressed, their riveted parts are deformed to clamp the connecting plate between the deformed riveted parts and the circuit board.

3. A mining lamp according to claim 1 or 2, characterized in that: The heat sink is provided with a plurality of upwardly protruding ribs, and a first ventilation channel is formed between adjacent ribs. The ribs are provided with heat dissipation holes along their length directions, and the heat dissipation holes form a second ventilation channel. A clearance hole is provided in the center of the heat sink, and the cover is provided in the clearance hole, and a limiting ring is provided on the outer ring of the upper end of the cover to press on the upper end of the rib.

4. The mining lamp according to claim 3, characterized in that: The heat sink is an integrally formed metal sheet, and the convex strips are straight or wavy.

5. The mining lamp according to claim 4, characterized in that: The heat sink is bonded to the circuit board by glue.

6. The mining lamp according to claim 4, characterized in that: The circuit board is an aluminum substrate, which consists of a conductive layer, an insulating layer and an aluminum plate from top to bottom. The heat sink and the aluminum plate are welded by laser.

7. A mining lamp according to claim 5 or 6, characterized in that: The lamp housing is in a circular shape, and a ring seat that bulges upward is provided inside the lamp housing. The outer ring of the front side of the circuit board is bonded to the ring seat by glue.

8. The mining lamp according to claim 7, characterized in that: The back of the lamp housing is provided with a surrounding plate surrounding the heat sink and the convex strips, a gap is provided between the surrounding plate and the heat sink, and a plurality of air holes communicating with the first ventilation channel and the heat dissipation through-holes are provided on the surrounding plate.

9. A mining lamp according to claim 1 or 2, characterized in that: The internal threaded tube is screwed with a hanging ring, and the reflector is provided between the circuit board and the sealing plate for reflecting the light emitted by the lamp beads. The sealing plate is bonded to the lamp housing by glue.

Images