[0021] Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the specific embodiments described here are merely examples and are not intended to limit the protection scope of the present invention.
[0022] See figure 1 and figure 2 , Which is a schematic structural diagram of a heat dissipation system 100 for a track lamp provided by the present invention. The heat dissipation system 100 of the track lamp includes a lamp holder 10, a rotating handle 20 rotatably connected with the lamp holder 10, and a power plug 30. It is conceivable that, in order for the track lamp to work normally, it should also have an energized track, which is a technology known in the art and will not be described in detail here.
[0023] The lamp holder 10 includes a lamp tube 11, a lamp tube heat dissipation subsystem 12 arranged in the lamp tube 11, a light source module 13 arranged in the lamp tube 11, and a lamp tube 11 的 Power Module 14. Such as image 3 As shown, the lamp tube 11 may be round or other shapes, such as square. In this embodiment, the lamp tube 11 is cylindrical. In order to achieve the purpose of heat dissipation, the lamp tube 11 may be made of a material with heat dissipation capability, such as metal or thermally conductive plastic.
[0024] The lamp tube heat dissipation subsystem 12 includes an inner tube 121 arranged inside the lamp tube 11 and spaced apart from the lamp tube 11, and an inner tube 121 arranged inside the lamp tube 11 and used for heat transfer. The heat transfer bottom plate 122, and a plurality of air ducts 123 arranged between the inner tube 121 and the lamp tube 11. The inner tube 121 can be integrally formed with the lamp tube 11 or installed on the lamp tube 11 by fasteners such as screws. Since the inner cylinder 121 is also used to house the light distribution element 132 and the heat transfer bottom plate 122 described below, the inner shape of the inner cylinder 121 is the same as the light distribution element 132, and a step 124 is provided. The heat transfer bottom plate 122 is disposed on the step 124. The heat transfer base plate 122 is used to set the LED chip 131 described below, and conduct the heat generated by the LED chip 131. Therefore, it can be made of a thermally conductive material, such as aluminum or thermally conductive plastic. The multiple air ducts 123 are opened between the inner tube 121 and the lamp tube 11, and the airflow direction is the same as the axial direction of the lamp tube 11, which is conducive to forming a "chimney effect", facilitating ventilation, and enhancing and accelerating the Dissipation of heat on the inner cylinder 121.
[0025] The light source module 13 includes at least one LED chip 131 arranged on the heat transfer base plate 122, a light distribution element 132 arranged in the light emitting direction of the LED chip 131, and a light distribution element 132 for blocking the light distribution. Block 133 of element 132. The LED chip 131 is a technology well known to those skilled in the art. Its working principle and structure will not be described in detail. As the main heat source of the entire track lamp, the heat generated by it should be conducted as soon as possible and as much as possible. Otherwise, it will not only affect the luminous effect of the LED chip 131, but also affect various parameters such as the lifespan and color rendering index of the LED chip 131. The LED chip 131 may be an integrated chip (COB), or a plurality of single bead chips may be attached to the heat transfer base plate 122. The light distribution element 132 may be a lens or a reflector, which depends on the actual use environment, such as the light output angle. For use environments where the light exit angle is required, lenses are often used to distribute light, but there will be light loss. In this embodiment, the light distribution element 132 is a lens. The blocking member 133 is provided with one end of the lamp tube 11 for fixing the relative position of the light distribution element 132, and together with the heat transfer base plate 122, the light distribution element 132 is sandwiched therein to fix its relative position. The blocking member 133 may be installed on the lamp tube 11 by screws. In order to facilitate air circulation in the air duct 123, the shade 133 also has a plurality of perforations corresponding to the air duct 123.
[0026] The power module 14 is also arranged inside the lamp tube 11, and is arranged on the other side of the heat transfer base plate 122 relative to the light source module 13, and includes a bottom cover 141 and a power source 142 . The bottom cover 142 is fixed on the lamp tube 11 by fasteners such as screws. The power supply 142 can be fixed on the bottom cover 142 so that the relative position of the power supply 142 can be fixed, which is used to provide the LED chip 131 with a compliant current or voltage.
[0027] Please combine Figure 4 The rotating handle 20 includes a handle heat dissipation subsystem. The handle heat dissipation sub-system includes a cover plate 23 arranged on the heat transfer base plate 122, a rotating mechanism 24 arranged on the lamp tube 11, and a rotating mechanism 24 arranged on the cover plate 23 and heat transfer The heat pipe 25 of the rotating mechanism 24 extends between the bottom plates 122. The heat transfer base plate 122 described above can be a part of the lamp tube heat dissipation subsystem 12, or a part of the handle heat dissipation system 21, that is, it is the lamp tube heat dissipation subsystem 12 and the handle The components shared by the heat dissipation sub-system 21 are here only for the convenience and sequence of description, and they are placed in the lamp tube heat dissipation sub-system 12 for description. The cover plate 23 is used together with the heat transfer bottom plate 122 to conduct part of the heat on the heat transfer bottom plate 122 to the heat pipe 25. Therefore, an opening is provided between the cover plate 23 and the heat transfer bottom plate 122 There is a through hole 231 for rotating the heat pipe 25, and the heat pipe 25 rotates around the through hole 231 along with the rotating handle 20. The heat pipe 25 passes through the through hole 231 and can rotate with the rotating handle 20. In order to ensure the heat transfer effect, a thermal interface material can be provided between the through hole 231 and the heat pipe 25. The thermal interface material should be grease, not solid to avoid rotation. Therefore, the thermal interface material can be Thermal Grease.
[0028] The rotating mechanism 24 includes an inner handle 241, a rotating shaft 242 arranged on the inner handle 241, a shaft hole 243 opened on the lamp tube 11, and one fixed on the lamp tube 11 and sleeved A shaft sleeve 244 is arranged on the rotating shaft 242 and an abutting mechanism 245 for clamping the inner handle 241 on the shaft sleeve 244. The inner handle 241 can be set according to actual needs. It is used to suspend the lamp cap 10, and it should be made of a thermally conductive material. The rotating shaft 242 extends from one side of the inner handle 241, and a heat pipe perforation 246 is opened in the center. Interval settings. The spacing between the heat pipe perforations 246 and the heat pipe 25 is determined by the characteristics of the heat pipe 25, that is, they must be set at intervals, otherwise the performance of the heat pipe 25 will be affected. The outer side wall of the rotating shaft 242 has at least one clamping position 247, which is formed by cutting a part along the axial direction of the rotating shaft 242, and is used to clamp the abutting mechanism 245 to allow The abutting mechanism 245 rotates along with the rotating shaft 242. The sleeve 244 is fixed in the shaft hole 243 of the lamp tube 11 by interference fit, and is used to regulate the rotation of the rotation shaft 242, that is, only rotate around the central axis of the rotation shaft 242.
[0029] The abutting mechanism 245 is used to fix the inner handle 241 on the lamp tube 11, it moves along with the rotating shaft 242 and includes an abutting member 2451 sleeved on the rotating shaft 242, A nut 2452 fixed at one end of the rotating shaft 242, and an elastic member 2453 sandwiched between the abutting member 2451 and the nut 2452. The abutting member 2451 has an annular shape and is sleeved on the rotating shaft 242. The elastic member 2453 may be a spring. By using the abutting mechanism 245, the inner handle 241 can be fixed on the lamp tube 11, and the rotating handle 20 can be rotated under the action of external force.
[0030] The heat pipe 25 is an existing technology, which utilizes a phase change process in which the medium evaporates at the hot end and condenses at the cold end (that is, the latent heat of vaporization and condensation of the liquid) is used to quickly conduct heat. Generally, a heat pipe is composed of a shell, a wick and an end cap. The inside of the heat pipe is pumped into a negative pressure state and filled with an appropriate liquid, which has a low boiling point and is easy to volatilize. The tube wall has a wick, which is composed of capillary porous material. One end of the heat pipe is the evaporating end, and the other end is the condensation end. When one end of the heat pipe is heated, the liquid in the capillary tube vaporizes rapidly. The vapor flows to the other end under the power of thermal diffusion, and condenses at the cold end to release heat, and the liquid travels along the porous material. It flows back to the evaporating end by capillary action, and the cycle continues until the temperature at both ends of the heat pipe is equal (the steam thermal diffusion stops at this time). This kind of circulation is rapid, and heat can be continuously conducted away. It is conceivable that the basic shape of the heat pipe 25 should be similar to the shape of the inner handle 241.
[0031] The rotating handle 20 also includes an outer handle 26 connected to the inner handle 241. At least one corresponding heat conducting block 261 is provided in the inner and outer handles 241 and 26 respectively. The heat pipe 25 is sandwiched between the heat conducting blocks 261 in the inner and outer handles 241 and 26 to fix the relative position of the heat pipe 25. In order to fully contact the heat pipe 25 and fix the heat pipe 25, each heat conducting block 261 is provided with a semicircular groove. When the inner and outer handles 241 and 26 are fixed together, the heat pipe 25 can be clamped and fixed. Further, in order to improve the heat conduction effect, a heat conduction interface material, such as heat conduction silica gel, may be provided between the semicircular groove and the heat pipe 25.
[0032] The power plug 30 is arranged on the rotating handle 20, which can be fixed on the rotating handle 20, or can be rotatably arranged on the rotating handle 20, specifically the power plug 30 is arranged on the outer handle 26 on. The power plug 30 is a standard part of track lights, and each track light has the power plug 30. Therefore, it is a technology well known to those skilled in the art and will not be described in detail here.
[0033] Compared with the prior art, because the heat dissipation system 100 of the track lamp is provided with the handle heat dissipation subsystem 21 on the rotating handle 20, and the handle heat dissipation subsystem 21 has the rotating mechanism 24 and the heat pipe 25, so that The heat pipe 25 can increase the heat dissipation speed and the amount of heat dissipation. At the same time, under the action of the rotating mechanism 24, the heat pipe 25 can be rotated together with the rotating handle 20, so that the rotating handle 20 has the functions of heat dissipation and rotation at the same time. The heat dissipation volume of the lamp holder 10 is reduced, so that the whole lamp can be miniaturized and light in weight.
[0034] The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.
