High-power LED lamp based on heat pipe for thermal conductivity

[0026] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] like figure 1 , 2 Shown, the present invention comprises LED chip, chip base 46, the cooling device that links to each other with chip base 46 and the light distribution device that is located on the chip base 46; The heat pipe 43 of the chip base 46; the chip base 46 is correspondingly provided with a plurality of inner grooves 47 matched with the heat pipe 43 for accommodating the heat pipe 43, and the inner groove 47 can be semicircular, "V" Shaped, "U" shaped or polygonal groove, in this embodiment a semicircular inner groove 47 is used, so that the circular heat pipe 43 can be closely attached to the wall of the inner groove 47, and lead-free tin A layer of flux welds the two together. The chip is covered on the chip base 46 by thermally conductive silver paste.

[0028]The light distribution device comprises a light distribution lens 6 positioned above the chip, a cover for fixing the lens 6 and a lens base 3; the lens base 3 is fixed on the chip base 46 by screws; the connection between the lens base 3 and the lens 6 An annular sealing ring 5 is provided between the lens base 3 and the chip base 46 . A light transmission hole matched with the LED chip is provided in the middle of the lens base 3 , and a plurality of anti-vibration support columns 31 that can be in contact with the heat sink 41 are provided on the outer periphery thereof. The side of the lens base 3 is provided with an outlet hole for the power supply line of the chip light source, and an outlet hole sealing ring 52 is placed in the outlet hole. The outlet hole nut 1 compresses and seals the outlet hole sealing ring 52 . The outer periphery of the integrated light source 4 formed by the chip-covered chip base 46 and the cooling device is provided with a fixing device. The fixing device includes a lamp housing 9 with a light outlet. The light outlet of the lamp housing 9 is located on the lens gland 8 and the lens. Between the bases 3; the lens gland 8 is threaded through the screw that is screwed on the lens base 3, so that the lens gland 8 and the lens base 3 clamp the light outlet of the lamp housing 9 to integrate the light source, seal and accessories. The optical lens 6 is fixed on the lamp housing 9 , and the threaded holes of the lens base 3 are located on the four anti-vibration support columns 31 . The assembly process of the light distribution device is as follows: the lens base 3 is fixed on the upper part of the substrate of the integrated light source 4 with bolts, and the sealing ring 5 is placed therebetween; the light distribution lens 6 is covered on the lens base 3, and the sealing ring 5 is placed therebetween. Put lens gland 8 after adding anti-vibration pad 7 on lens 6, fix with bolt. The power line of the light source is led out through the outlet hole of the lens base 3, and the outlet hole sealing ring 2 is compressed and sealed through the outlet hole nut 1 . In this way, after assembly, the light source part forms a sealed space to prevent moisture and sundries from entering. After the lens gland 8 is assembled with the lens base 3, it clamps the light outlet of the lamp housing 9, so that the integrated light source 4, its sealing part, and the light distribution lens 6 can be fixed on the lamp.

[0029] like image 3 As shown, the heat pipe 43 is a circular tube with a cavity to store liquid; the radiator 41 includes a plurality of metal cooling fins 42 vertically arranged in parallel, and the metal cooling fins 42 have a plurality of air circulation holes for air convection 45 and a plurality of connecting holes 44 arranged side by side for passing through the heat pipe 43 . The air circulation holes 45 are rectangular holes arranged symmetrically up and down and with flanges on the outer periphery; the connecting holes 44 are cylindrical and have flanges on the outer periphery; the outer periphery of the cooling fins 42 is covered with a heat dissipation and cooling layer. The inner groove 47 on the chip base 46 is a through groove arranged in parallel; the heat pipe 43 and the connection hole 44 are connected and fixed by metal welding, and the greater the power of the LED lamp, the more the number of the inner groove 47 to accommodate more The heat pipe 43 is used for heat conduction. Two butt-connected heat pipes 43 are accommodated in a single concave through groove 47 , and the two heat pipes 43 are respectively led to two sides of the heat sink 41 by the chip base 46 and penetrate into two rows of different connecting holes 44 . Utilizing the principle of absorption and release in the process of gas-liquid change, the heat is transferred through evaporation and condensation, which well solves the heat dissipation problem of the existing high-power LED lamps. Limiting sheets for determining the positional relationship between adjacent cooling fins 42 are attached to the sides of the cooling fins 42 . The limiting piece has a limiting portion. Of course, only a single heat pipe 43 can be placed in a single inner groove 47 , and the heat pipe 43 leads from one end of the chip base 46 to the radiator 41 and penetrates into the connecting holes 44 in the same row.

[0030] above Figure 1-3 The shown high-power LED lamp based on heat pipe heat conduction is a specific embodiment of the present invention, which has already reflected the substantive features and progress of the present invention. It can be modified in terms of shape, specification, etc. according to actual use needs. I won't go into details here.