LED street lamp with cooling and heat dissipation functions

Abstract

This utility model discloses an LED street light with cooling and heat dissipation functions, relating to the field of road lighting technology. It aims to solve the problems of poor heat dissipation in traditional LED street lights, which leads to shortened lifespan and safety hazards. The light includes a lamp holder assembly, a lighting assembly, and a heat dissipation assembly. This utility model designs a heat dissipation assembly where LED beads are directly welded to the bottom of an aluminum substrate, allowing the heat generated by the beads to be quickly conducted away through the substrate. The heat absorption section of the heat dissipation fins is connected to the aluminum substrate, while the heat dissipation section extends beyond the lamp holder, increasing the contact area with air and improving heat convection efficiency, thereby enhancing heat dissipation efficiency. When the evaporation section of the heat pipe heat exchange mechanism absorbs heat, the working fluid evaporates. The vapor flows rapidly to the condensation section under pressure difference, condenses at the low-temperature heat dissipation section, releasing heat. The condensed liquid then flows back to the evaporation section under gravity or capillary force, further improving the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of road lighting technology, and more specifically, to an LED street light with cooling and heat dissipation function. Background Technology

[0002] A street light is a complete unit consisting of a lamp, wires, a light source, a pole, a lamp arm, a flange, and pre-embedded foundation components. It refers to a lamp that provides illumination to roads at night, broadly encompassing lamps within the road surface lighting range of traffic lighting. Street lights are widely used in various locations requiring illumination. Due to their high luminous efficiency, low power consumption, long lifespan, and strong safety and reliability, LED lights are becoming increasingly widespread and will gradually replace existing lighting fixtures, including street lights for road lighting.

[0003] Although LED lights have high luminous efficiency, 20%-30% of the electrical energy is still converted into heat energy. In particular, high-power LED lights generate a lot of heat during lighting. If the heat is not dissipated in time, the light decay rate will be accelerated, and the lifespan may be shortened from the normal 50,000 hours to less than 20,000 hours. High temperature will also cause the phosphor performance to degrade, affecting luminous efficiency and color temperature. At the same time, high temperature can also damage internal electronic components, causing short circuits or fires, thus leading to safety hazards. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide an LED street light with cooling and heat dissipation function to solve the problems of poor heat dissipation, shortened service life, and safety hazards of traditional LED street lights during use.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an LED street light with cooling and heat dissipation function, comprising a lamp holder assembly, a lighting assembly, and a heat dissipation assembly. The lighting assembly is disposed on the bottom side of the lamp holder assembly and includes a lamp base, a lamp cover disposed at the bottom of the lamp base, a ventilation window disposed on the top surface of the lamp base, an air intake channel disposed on the side wall surface of the lamp base, and an air intake hole disposed inside the air intake channel. The heat dissipation assembly includes an aluminum substrate disposed in the inner cavity of the lamp base, heat dissipation fins disposed on the top of the aluminum substrate, and a heat pipe heat exchange mechanism.

[0006] The heat dissipation fins include a heat absorption section and a heat dissipation section. The bottom of the heat absorption section is attached to the top of the aluminum substrate. The heat dissipation section penetrates the side wall of the lamp holder and extends to the outside of the lamp holder. The surface of the heat dissipation section is provided with heat dissipation channels. The heat pipe heat exchange mechanism includes an evaporation section and a condensation section. The evaporation section is attached to the top of the aluminum substrate. The condensation section is attached to the heat dissipation section. The evaporation section and the condensation section are connected through an insulation section.

[0007] Preferably, the top of the lampshade is provided with a connecting seat, and the lampshade is connected to the lamp holder assembly through the connecting seat. The side wall of the lampshade is provided with through holes, which are evenly distributed in a ring. The cross-section of the through holes is arranged in a cross shape. The inner side wall of the lampshade is provided with a mounting bracket, and the mounting bracket is provided with mounting screw holes. The edge of the aluminum substrate is provided with connecting screw holes corresponding to the positions of the mounting screw holes. The air inlet and the ventilation window are both provided with dustproof nets.

[0008] Preferably, the heat dissipation section of the heat dissipation fin is elongated, the heat dissipation section of the heat dissipation fin is fan-shaped, the cross-section of the air intake channel is trapezoidal, and the air intake channel gradually decreases in size from the inlet to the outlet. The top of the aluminum substrate is provided with connecting grooves for connecting the heat dissipation fin and the heat pipe heat exchange mechanism.

[0009] Preferably, the evaporation section is filled with a phase change working fluid, and the insulation section is provided with a connecting channel.

[0010] Preferably, the lamp holder assembly includes a base, a column disposed on the top of the base, and a curved rod disposed on one side of the top of the column. The lighting component is disposed at the bottom of the curved rod, and a rain shield is provided at the connection between the lighting component and the curved rod. The rain shield is conical in shape and has a water guide groove on its surface.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model designs a heat dissipation component, which includes an aluminum substrate, heat dissipation fins, and a heat pipe heat exchange mechanism. The LED beads are directly welded to the bottom of the aluminum substrate, allowing the heat generated by the beads to be quickly conducted away through the aluminum substrate. The heat absorption section of the heat dissipation fins is connected to the aluminum substrate, and the heat dissipation section extends to the outside of the lamp holder. The heat dissipation section is fan-shaped and has heat dissipation holes on its surface, increasing the contact area with air and improving the heat convection efficiency, thereby improving the heat dissipation efficiency. When the evaporation section of the heat pipe heat exchange mechanism absorbs heat, the working fluid evaporates. The vapor flows rapidly to the condensation section under the action of pressure difference, condenses at the low temperature of the heat dissipation section, and releases heat. The condensed liquid flows back to the evaporation section under the action of gravity or capillary force. This cycle repeats, achieving efficient heat transfer and further improving the heat dissipation effect.

[0013] 2. This utility model also designs a lampshade assembly with air intake channels evenly distributed on the surface of the lampshade assembly and air intake holes inside the air intake channels. The cross-section of the air intake channel is trapezoidal, gradually decreasing in size from the inlet to the outlet. This makes it more in line with fluid dynamics when wind blows into the air intake channel, which can be accelerated and further heat dissipation inside the lamp holder. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the lighting component and the heat dissipation component of this utility model;

[0016] Figure 3 This is a schematic diagram of the lighting component structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the heat sink fin structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the heat pipe heat exchange mechanism of this utility model;

[0020] Figure 7 This is a schematic diagram of the enlarged structure of the air intake channel of this utility model.

[0021] The following are the labels in the diagram: 1. Lamp holder assembly; 2. Lighting assembly; 201. Lamp holder; 202. Lampshade; 203. Mounting bracket; 204. Ventilation window; 205. Through hole; 206. Air intake channel; 207. Air intake hole; 208. Dustproof mesh; 3. Heat dissipation assembly; 301. Aluminum substrate; 302. Heat dissipation fins; 3021. Heat absorption section; 3022. Heat dissipation section; 3023. Heat dissipation channel; 303. Heat pipe heat exchange mechanism; 3031. Evaporation section; 3032. Condensation section; 3033. Insulation section. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] This utility model relates to an LED street light with cooling and heat dissipation function, including a lamp holder assembly 1, a lighting assembly 2, and a heat dissipation assembly 3. The lighting assembly 2 is disposed on the bottom side of the lamp holder assembly 1. The lighting assembly 2 includes a lamp holder 201, a lamp cover 202 screwed to the bottom of the lamp holder 201, a ventilation window 204 opened on the top surface of the lamp holder 201, an air intake channel 206 opened on the side wall surface of the lamp holder 201, and an air intake hole 207 opened inside the air intake channel 206. The lamp holder 201 is used to install an aluminum substrate 301 and other mechanisms, and the lamp cover 202 is used for... The bottom of the lamp holder 201 is sealed. The ventilation window 204 is used for ventilation and heat dissipation. The air intake channel 206 accelerates the air when it is blown in, and the air inlet allows the air to enter the lamp holder 201. The heat dissipation assembly 3 includes an aluminum substrate 301 screwed into the inner cavity of the lamp holder 201, heat dissipation fins 302 inserted into the top of the aluminum substrate 301, and a heat pipe heat exchange mechanism 303. The aluminum substrate 301 is used to mount LED components and can also quickly conduct the heat generated by the LEDs. The heat dissipation fins 302 are used to heat the aluminum substrate... The heat absorbed by the plate 301 is conducted to the outside of the lamp holder 201, and the heat pipe heat exchange mechanism 303 is used for circulating liquid cooling. The heat dissipation fins 302 include a heat absorption section 3021 and a heat dissipation section 3022. The bottom of the heat absorption section 3021 is attached to the top of the aluminum substrate 301, and the heat dissipation section 3022 penetrates the side wall of the lamp holder 201 and extends to the outside of the lamp holder 201. A heat dissipation channel 3023 is formed on the surface of the heat dissipation section 3022. The heat absorption section 3021 is used to absorb heat from inside the aluminum substrate 301, and the heat dissipation section 3022 is used to quickly dissipate heat. The heat pipe 3023 is used to increase the contact area with the outside air, thereby improving the heat dissipation efficiency; the heat pipe heat exchange mechanism 303 includes an evaporation section 3031 and a condensation section 3032. The evaporation section 3031 is attached to the top of the aluminum substrate 301, and the condensation section 3032 is attached to the heat dissipation section 3022. The evaporation section 3031 and the condensation section 3032 are connected by an insulation section 3033. The evaporation section 3031 is used to load the working fluid, and the condensation section 3032 is used to condense the vaporized working fluid. The insulation section 3033 is used to connect the evaporation section 3031 and the condensation section 3032.

[0024] Specifically, a connecting seat is installed on the top of the lampshade 202, and the lampshade 202 is connected to the lamp holder assembly 1 through the connecting seat. The connecting seat is used to connect the lighting assembly 2 and the lamp holder assembly 1. The side wall of the lampshade 202 is provided with openings, and the through holes 205 are evenly distributed in a ring. The cross-section of the through holes 205 is arranged in a cross shape, which is used to facilitate the insertion of heat dissipation fins 302 and heat pipe heat exchange mechanism 303. The inner side wall of the lampshade 202 is provided with a mounting bracket 203, and the mounting bracket 203 is provided with mounting screw holes. The edge of the aluminum substrate 301 is provided with connecting screw holes corresponding to the positions of the mounting screw holes. The mounting bracket 203 is used to install the aluminum substrate 301. Dustproof nets 208 are installed inside the air inlet and the ventilation window 204 to prevent dust from entering the interior of the lamp holder 201 and improve the protection performance.

[0025] More specifically, the heat dissipation section 3022 of the heat dissipation fin 302 is elongated, which facilitates insertion into the top of the aluminum substrate 301. The heat dissipation section 3022 of the heat dissipation fin 302 is fan-shaped, which increases the contact area with air. The cross-section of the air intake channel 206 is trapezoidal, and the air intake channel 206 gradually decreases in size from the inlet to the outlet, which is more in line with fluid mechanics and can accelerate the gas when it enters. The top of the aluminum substrate 301 is provided with connecting grooves for connecting the heat dissipation fin 302 and the heat pipe heat exchange mechanism 303, which facilitates the installation of the heat dissipation fin 302 and the heat pipe heat exchange mechanism 303.

[0026] It is worth mentioning that the evaporation section 3031 is filled with a phase change working fluid, so that when the evaporation section 3031 is heated, it can quickly flow to the condensation section 3032. The insulation section 3033 has a connecting channel inside to facilitate the return of the working fluid after condensation.

[0027] It is worth noting that the lamp holder assembly 1 includes a base, a column installed on the top of the base, and a curved rod installed on one side of the top of the column. The lighting assembly 2 is installed at the bottom of the curved rod, and a rain shield is installed at the connection between the lighting assembly 2 and the curved rod. The rain shield is conical and has water guide grooves on its surface. The lamp holder assembly 1 is used to install the lighting assembly 2, and the rain shield is used to improve the protective performance and prevent rainwater from entering.

[0028] Working Principle: This embodiment provides an LED street light with cooling and heat dissipation function. In use, the lighting component 2 is first installed at the bottom of the street light component via a connector. Since the LED beads are directly soldered to the bottom of the aluminum substrate 301, the heat generated by the LED beads during operation can be quickly conducted away through the aluminum substrate 301. Simultaneously, the heat absorption section 3021 of the heat dissipation fins 302 is connected to the aluminum substrate 301, and the heat dissipation section 3022 of the heat dissipation fins 302 extends beyond the lamp holder 201. The heat dissipation section 3022 is fan-shaped and has heat dissipation holes 205 on its surface, increasing the contact area with air and improving heat convection efficiency, thereby improving heat dissipation efficiency. When the evaporation section 3031 of the heat pipe heat exchange mechanism 303 absorbs heat... When the working fluid evaporates, the vapor flows rapidly to the condensation section 3032 under the action of pressure difference, and condenses at the low temperature heat dissipation section 3022, releasing heat. The condensed liquid flows back to the evaporation section 3031 under the action of gravity or capillary force. This cycle repeats, achieving efficient heat transfer and further improving the heat dissipation effect. In addition, when natural wind blows, because the surface of the lamp cover 202 assembly is uniformly provided with air intake channels 206, and the air intake holes 207 are provided inside the air intake channels 206, and the cross-section of the air intake channels 206 is trapezoidal, gradually decreasing from the inlet to the outlet, the wind blowing into the air intake channels 206 is more in line with the fluid dynamics and can be accelerated, thus further dissipating heat from the inside of the lamp holder 201.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An LED street lamp with a cooling and heat dissipation function, characterized in that, The assembly includes a lamp holder assembly (1), a lighting assembly (2), and a heat dissipation assembly (3). The lighting assembly (2) is located at the bottom of one side of the lamp holder assembly (1). The lighting assembly (2) includes a lamp holder (201), a lampshade (202) located at the bottom of the lamp holder (201), a ventilation window (204) located on the top surface of the lamp holder (201), an air intake channel (206) located on the side wall surface of the lamp holder (201), and an air intake hole (207) located inside the air intake channel (206). The heat dissipation assembly (3) includes an aluminum substrate (301) located in the inner cavity of the lamp holder (201), heat dissipation fins (302) located on the top of the aluminum substrate (301), and a heat pipe heat exchange mechanism (303). The heat dissipation fins (302) include a heat absorption section (3021) and a heat dissipation section (3022). The bottom of the heat absorption section (3021) is attached to the top of the aluminum substrate (301). The heat dissipation section (3022) penetrates the side wall of the lamp holder (201) and extends to the outside of the lamp holder (201). The surface of the heat dissipation section (3022) is provided with a heat dissipation channel (3023). The heat pipe heat exchange mechanism (303) includes an evaporation section (3031) and a condensation section (3032). The evaporation section (3031) is attached to the top of the aluminum substrate (301). The condensation section (3032) is attached to the heat dissipation section (3022). The evaporation section (3031) and the condensation section (3032) are connected through an insulation section (3033).

2. The LED street lamp with cooling and heat dissipation function according to claim 1, characterized in that, The lampshade (202) is provided with a connecting seat on its top, and the lampshade (202) is connected to the lamp holder assembly (1) through the connecting seat. The side wall of the lampshade (202) is provided with through holes (205), which are evenly distributed in a ring. The cross section of the through holes (205) is arranged in a cross shape. The inner side wall of the lampshade (202) is provided with a mounting bracket (203), and the mounting bracket (203) is provided with mounting screw holes. The edge of the aluminum substrate (301) is provided with connecting screw holes corresponding to the positions of the mounting screw holes. The air inlet (207) and the ventilation window (204) are both provided with dustproof nets (208).

3. An LED street light with cooling and heat dissipation function according to claim 2, characterized in that, The heat dissipation section (3022) of the heat dissipation fin (302) is elongated and fan-shaped. The cross-section of the air inlet channel (206) is trapezoidal and gradually decreases in size from the inlet to the outlet. The top of the aluminum substrate (301) is provided with connecting grooves that connect to the heat dissipation fin (302) and the heat pipe heat exchange mechanism (303).

4. An LED street light with cooling and heat dissipation function according to claim 3, characterized in that, The evaporation section (3031) is filled with a phase change working fluid, and the insulation section (3033) is provided with a connecting channel.

5. An LED street light with cooling and heat dissipation function according to claim 4, characterized in that, The lamp holder assembly (1) includes a base, a column set on the top of the base, and a curved rod set on one side of the top of the column. The lighting assembly (2) is set at the bottom of the curved rod, and a rain shield is provided at the connection between the lighting assembly (2) and the curved rod. The rain shield is conical and has a water guide groove on its surface.

Images