Energy-saving street lamp light source with automatic cooling function

Abstract

The invention discloses an energy-saving street lamp light source with an automatic cooling function, relates to the technical field of road lighting, and aims to solve the technical problems that a heat dissipation structure of a current street lamp light source can only achieve one-way continuous heat dissipation, so that the current street lamp light source is difficult to work in an optimal temperature interval, and energy waste and performance loss are caused. Comprising a shell, a light source module, a lens, a heat insulation body, a heat absorption block, a heat dissipation block, a pressure storage valve mechanism, a liquid feeding shaft, a transmission assembly and a cleaning mechanism. Heat generated when the light source module works is absorbed by the low-boiling-point liquid in the closed cavity defined by the heat absorption block and the heat absorption liquid cavity and vaporized, the air pressure in the heat absorption liquid cavity is increased through steam pressure, the heat dissipation block can conduct heat dissipation intermittently according to needs through opening and closing control of the pressure storage valve mechanism, continuous heat dissipation of a traditional structure is avoided, and the heat dissipation efficiency is improved. And when the environment temperature is low, the light source module can be quickly heated and kept warm in a low-temperature environment, so that the light source module can work in a proper working temperature interval, and the energy-saving effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of road lighting technology, and more specifically, to an energy-saving street light source with automatic cooling. Background Technology

[0002] With the widespread use of high-efficiency light sources such as LEDs in road lighting, heat dissipation has become a key technical bottleneck affecting the luminous efficacy, lifespan, and long-term reliability of these light sources. If the large amount of waste heat generated by the light source during operation cannot be dissipated in time, it will cause a sharp increase in the chip junction temperature, leading to severe light decay, color temperature shift, and a significant reduction in lifespan. Current mainstream technologies mainly rely on continuous passive heat dissipation structures, such as directly installing aluminum finned heat sinks on the back of the light source to assist in heat dissipation.

[0003] However, finned heat sinks provide continuous and irreversible unidirectional heat dissipation. In winter or at low ambient temperatures, this continuous heat dissipation path is like a perpetually open window. The heat generated when the light source starts up is conducted into the cold air by the heat dissipation structure before it reaches its optimal operating temperature, causing the light source to operate in a "cold" state for extended periods. While this avoids the risk of overheating, LEDs operating at excessively low temperatures experience reduced luminous efficiency, deteriorated startup characteristics, and difficulty in achieving optimal performance, resulting in unnecessary energy loss and potential performance degradation. Therefore, we propose an energy-saving streetlight light source with automatic cooling. Summary of the Invention

[0004] The purpose of this invention is to provide an energy-saving street light source with automatic cooling, so as to solve the technical problem that the heat dissipation structure of current street light sources can only dissipate heat in one direction, making it difficult for them to work in the optimal temperature range, resulting in energy waste and performance loss.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an energy-saving street light source with automatic cooling, comprising a housing, a light source module disposed within the housing, a lens fixedly disposed at the bottom of the housing, and a heat insulation body fixedly disposed at the top of the housing. The bottom end of the heat insulation body extends into the housing and has a heat-absorbing liquid cavity, while the top end of the heat insulation body extends out of the housing and has a condensate cavity. A gas cavity is formed on one side of the condensate cavity, and a gas channel communicating with the top end of the heat-absorbing liquid cavity is formed at the bottom of the gas cavity. An installation annular groove is formed on the gas channel. A pressure accumulator valve mechanism is fixedly mounted on the annular groove. A pre-set groove is opened at the bottom of the condensate chamber. A circular groove is opened at the bottom of the pre-set groove. A liquid delivery shaft is rotatably mounted on the circular groove. The liquid delivery shaft is connected to the pressure accumulator valve mechanism through a transmission assembly. A heat-absorbing block connected to the top of the light source module is fixedly mounted at the bottom of the heat insulation body. A heat-dissipating block is fixedly mounted at the top of the heat insulation body. A cleaning mechanism is provided at the top of the heat-dissipating block. The output end of the cleaning mechanism is connected to the end of the liquid delivery shaft away from the transmission assembly. The sealed cavity formed by the heat-absorbing block and the heat-absorbing liquid chamber is filled with a low-boiling-point liquid.

[0006] Preferably, a wide tube communicating with the bottom of the circular groove is fixed at the top of the heat-absorbing liquid chamber, and the liquid level of the low-boiling-point liquid in the heat-absorbing liquid chamber is higher than the bottom of the wide tube.

[0007] Preferably, the bottom end of the heat-absorbing block is provided with a heat-absorbing groove, and the heat-absorbing groove is detachably and fixedly connected to the top end of the light source module.

[0008] Preferably, a plurality of heat dissipation grooves A are uniformly formed at the top of the heat dissipation block. The cross-section of the heat dissipation groove A is arc-shaped, and the cross-sectional area of ​​the heat dissipation groove A gradually increases from the center of the groove to both ends. A plurality of condensation grooves are uniformly formed at the bottom of the heat dissipation block. The shape, size and distribution of the condensation grooves are adapted to the structure of the heat dissipation block, so that the cooling process is relatively uniform and efficient.

[0009] Preferably, the accumulator valve mechanism includes a ring tube, a fixed ring, a piston, and two vertical rods; the ring tube is fixed on the mounting ring groove, the fixed ring is fixed on the top end of the ring tube cavity, the piston is located below the fixed ring and is slidably connected to the ring tube cavity, the piston and the fixed ring are elastically connected by a spring A, and sliding holes are provided at both ends of the piston; both vertical rods are fixed at the bottom end of the ring tube, and a plug is fixed at the bottom end of the vertical rod, the plug slidingly engaging with the sliding hole.

[0010] Preferably, the piston has a movable cavity at its bottom end, and the inner surface of the annular tube has a plurality of arc grooves in an annular, equally spaced structure. An elastic ball is movably mounted on the arc groove, and the elastic ball is elastically connected to the eccentric end of the arc groove by a spring B.

[0011] Preferably, a crossbar A is fixed at one end of the liquid delivery shaft near the annular pipe, and a crossbar B is fixed at the other end of the liquid delivery shaft away from the annular pipe. Both the crossbar A and the crossbar B are rotatably connected to the heat insulation body. A liquid transport groove is opened at the top of the crossbar B, and the pre-set groove and the wide pipe are both connected and cooperate with the liquid transport groove.

[0012] Preferably, the transmission assembly includes a rotating shaft, a cam, and a connecting arm. The rotating shaft is rotatably disposed at the bottom of the cavity of the annular tube, extends out of the annular tube, and is fixedly connected to the crossbar A. The cam is fixedly disposed on the rotating shaft. The connecting arm is rotatably disposed on the movable cavity via a rotating rod. The bottom end of the connecting arm is connected to the cam via a rotating body. The cam has an inclined groove, and the rotating body is movably disposed in the inclined groove and rotatably connected to the bottom end of the connecting arm.

[0013] Preferably, the cleaning mechanism includes several horizontal shafts and several toothed rings. The several horizontal shafts are respectively disposed on several heat dissipation grooves A. A scraper adapted to the shape of the heat dissipation groove A is fixed on the horizontal shaft. Several rotating rings are fixed on the scraper. The rotating rings are rotatably connected to the heat dissipation groove A and are adapted to the shape of the heat dissipation groove A. The several toothed rings are respectively disposed at one end of the several horizontal shafts away from the horizontal bar A. The toothed rings are fixedly connected to the horizontal shafts by several connecting plates arranged in a ring-shaped and equally spaced structure. Adjacent toothed rings are meshed together.

[0014] Preferably, the cleaning mechanism further includes pulley A and pulley B. Pulley A is located on one of the toothed rings near the side of the crossbar A and is fixedly connected to the corresponding cross shaft. Pulley B is located below pulley A. Pulley B and pulley A are connected by a drive belt. The crossbar B passes through the heat insulation body and is fixedly connected to pulley B.

[0015] The beneficial effects of this invention are: 1. The heat generated by the light source module of the present invention is absorbed and vaporized by the low-boiling-point liquid in the sealed cavity formed by the heat-absorbing block and the heat-absorbing liquid chamber. The vapor pressure increases the gas pressure in the heat-absorbing liquid chamber. Through the opening and closing control of the pressure accumulator valve mechanism, when the pressure difference between the heat-absorbing liquid chamber and the condensate chamber is large, the vapor is released to the condensation tank of the heat sink block for heat dissipation. When the pressure difference is small, the pressure accumulator valve mechanism is closed, and the system is in a sealed state. This allows the heat sink block to dissipate heat intermittently and on demand, avoiding the continuous heat dissipation of the traditional structure. When the ambient temperature is low, it is beneficial for the light source module to heat up and maintain the temperature quickly in the low-temperature environment, so that it can work in the appropriate operating temperature range, avoiding light decay and lifespan reduction caused by temperature rise, and ensuring the long-term stability and energy-saving effect of the light source.

[0016] 2. By setting up heat dissipation groove A, the present invention increases the contact area between the heat dissipation block and the air, thereby improving the heat dissipation efficiency of the heat dissipation block. In addition, the cross-sectional area of ​​heat dissipation groove A gradually increases from the center of the groove to both ends, which facilitates the discharge of rainwater and pollutants in heat dissipation groove A.

[0017] 3. The present invention also designs a cleaning mechanism structure in which the scraper scrapes the inner wall of the heat sink A during rotation, thereby achieving automatic cleaning and ensuring the heat dissipation efficiency of the heat sink.

[0018] 4. Through the structural design of the accumulator valve mechanism, the present invention utilizes an elastic ball and spring A to construct the accumulator threshold, which fully accumulates the steam pressure and converts it into mechanical power. This power drives the cold liquid to return and complete the circulation, and also drives the cleaning mechanism to clean the heat dissipation surface. No additional power input is required throughout the process, thus achieving the coordinated operation of cooling, energy saving and cleaning. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention in use.

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention.

[0021] Figure 3 This is a partial structural breakdown diagram of the present invention.

[0022] Figure 4 This is a partial structural schematic diagram of the present invention.

[0023] Figure 5 This is a schematic diagram showing the disassembled structure of the heat sink and cleaning mechanism of the present invention.

[0024] Figure 6 This is a schematic diagram of the cleaning mechanism of the present invention.

[0025] Figure 7 This is a cross-sectional structural diagram of the heat insulation body, heat absorption block, and liquid delivery shaft of the present invention.

[0026] Figure 8 This is a cross-sectional structural diagram of the accumulator valve mechanism and transmission assembly of the present invention.

[0027] Figure 9 This is a partial structural breakdown diagram of the accumulator valve mechanism and transmission assembly of the present invention.

[0028] Figure 10 This is a partial structural schematic diagram of the transmission component of the present invention.

[0029] Figure 11 This is a schematic diagram of the motion state of the transmission component of the present invention when the piston rises.

[0030] Figure 12 This is a schematic diagram of the motion state of the transmission component of the present invention when the piston descends.

[0031] Explanation of the labels in the diagram: 1. Housing; 2. Light source module; 3. Lens; 4. Heat insulation; 5. Heat absorption block; 6. Heat dissipation block; 7. Accumulator valve mechanism; 8. Liquid delivery shaft; 9. Transmission assembly; 10. Cleaning mechanism; 40. Installation ring groove; 41. Heat-absorbing liquid chamber; 42. Condensate chamber; 43. Gas chamber; 44. Gas passage; 45. Pre-set tank; 46. Wide pipe; 51. Heat absorption tank; 61. Heat dissipation tank A; 62. Condensation tank; 70. Spring A; 71. Ring tube; 72. Fixed ring; 73. Piston; 74. Sliding hole; 75. Vertical rod; 76. Plug; 77. Movable cavity; 711. Arc groove; 712. Elastic ball; 713. Spring B; 81. Horizontal bar A; 82. Horizontal bar B; 83. Liquid transfer tank; 91. Rotating shaft; 92. Cam; 93. Rotating body; 94. Inclined groove; 95. Connecting arm; 101. Horizontal shaft; 102. Scraper; 103. Rotary ring; 104. Gear ring; 105. Pulley A; 106. Pulley B; 107. Drive belt. Detailed Implementation

[0032] like Figures 1 to 12 As shown, the present invention relates to an energy-saving street light source with automatic cooling, comprising a housing 1, a light source module 2, a lens 3, a heat insulation body 4, a heat absorption block 5, a heat dissipation block 6, a pressure accumulator valve mechanism 7, a liquid delivery shaft 8, a transmission assembly 9, and a cleaning mechanism 10.

[0033] In embodiments of the present invention, such as Figure 2 As shown, the light source module 2 is fixed inside the housing 1.

[0034] In embodiments of the present invention, such as Figure 2 As shown, lens 3 is fixed to the bottom of housing 1.

[0035] In embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 4 ,as well as Figure 7 As shown, the heat insulation body 4 is fixed to the top of the shell 1. The bottom end of the heat insulation body 4 penetrates into the shell 1 and has a heat-absorbing liquid cavity 41. The top end of the heat insulation body 4 extends out of the shell 1 and has a condensate cavity 42. A gas cavity 43 is provided on one side of the condensate cavity 42. A gas channel 44 communicating with the top end of the heat-absorbing liquid cavity 41 is provided at the bottom end of the gas cavity 43. An installation ring groove 40 is provided on the gas channel 44. A pre-set groove 45 is provided at the bottom end of the condensate cavity 42. A circular groove is provided at the bottom end of the pre-set groove 45. A wide pipe 46 communicating with the bottom end of the circular groove is fixed to the top end of the heat-absorbing liquid cavity 41.

[0036] In embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 4 ,as well as Figure 7 As shown, the heat-absorbing block 5 is fixed to the bottom of the heat insulation body 4, and a heat-absorbing groove 51 is provided at the bottom of the heat-absorbing block 5. The heat-absorbing groove 51 is detachably and fixedly connected to the top of the light source module 2. The sealed cavity formed by the heat-absorbing block 5 and the heat-absorbing liquid chamber 41 is filled with a low-boiling-point liquid, which is used to absorb the heat generated when the light source module 2 is working. Utilizing its easily vaporized physical properties, it efficiently absorbs the heat generated when the light source module 2 is working, thereby keeping the light source module 2 at its boiling point temperature. This allows the light source module 2 to operate within an appropriate operating temperature range, avoiding light decay and lifespan reduction caused by temperature rise, and ensuring the long-term stability and energy-saving effect of the light source.

[0037] In embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 4 ,as well as Figure 5 As shown, the heat sink 6 is fixed to the top of the heat insulation body 4. A plurality of heat dissipation grooves A61 are evenly distributed on the top of the heat sink 6. The cross-sectional area of ​​the heat dissipation groove A61 is arc-shaped, and the cross-sectional area of ​​the heat dissipation groove A61 gradually increases from the center to both ends. A plurality of condensation grooves 62 are evenly distributed on the bottom of the heat sink 6. The shape, size, and distribution of the condensation grooves 62 are adapted to the structure of the heat sink 6, making the cooling process relatively uniform and efficient. This invention, through the setting of the heat dissipation grooves A61, increases the contact area between the heat sink 6 and the air, thereby improving the heat dissipation efficiency of the heat sink 6. Furthermore, the gradual increase in the cross-sectional area of ​​the heat dissipation grooves A61 from the center to both ends facilitates the discharge of rainwater and pollutants from the heat dissipation grooves A61.

[0038] In embodiments of the present invention, such as Figure 3 , Figure 8 ,as well as Figure 9 As shown, the accumulator valve mechanism 7 is fixed on the mounting ring groove 40. Specifically, the accumulator valve mechanism 7 includes a ring tube 71, a fixed ring 72, a piston 73, and two vertical rods 75. The ring tube 71 is fixed on the mounting ring groove 40, the fixed ring 72 is fixed at the top of the cavity of the ring tube 71, the piston 73 is located below the fixed ring 72 and is slidably connected to the cavity of the ring tube 71. The piston 73 and the fixed ring 72 are elastically connected by a spring A70. Sliding holes 74 are provided at both ends of the piston 73. The two vertical rods 75 are fixed at the bottom of the ring tube 71. A plug 76 is fixed at the bottom of the vertical rod 75, and the plug 76 is slidably engaged with the sliding hole 74.

[0039] In embodiments of the present invention, such as Figure 9 As shown, the piston 73 has a movable cavity 77 at its bottom end.

[0040] In embodiments of the present invention, such as Figure 8 As shown, the inner surface of the annular tube 71 has several equally spaced arc grooves 711, and elastic balls 712 are movably mounted on the arc grooves 711. The elastic balls 712 are elastically connected to the eccentric ends of the arc grooves 711 by springs B713. This invention, through the structural design of the accumulator valve mechanism 7, achieves... Figure 8It can be seen that when piston 73 is above elastic ball 712 and piston 73 moves downward along ring tube 71, the force exerted by piston 73 on elastic ball 712 causes elastic ball 712 to move towards the eccentric end of arc groove 711. At this time, the resistance of elastic ball 712 to piston 73 is small. When piston 73 is below elastic ball 712 and piston 73 moves upward along ring tube 71, piston 73 needs to squeeze elastic ball 712 to deform it before it can continue to move upward. At this time, the resistance of elastic ball 712 to piston 712 is small. The resistance of 3 is large; in the initial state, the plug 76 is located in the sliding hole 74, and the piston 73 is below the elastic ball 712. At this time, the accumulator valve mechanism 7 is in the closed state. During the vaporization process of the low-boiling-point liquid in the heat-absorbing liquid chamber 41, the steam causes the gas pressure in the heat-absorbing liquid chamber 41 to continuously increase until the pressure difference between the heat-absorbing liquid chamber 41 and the condensate chamber 42 exerts a force on the piston 73 greater than the resistance of the spring A70 and the elastic ball 712 on the piston 73, causing the piston 73 to move upward along the ring tube 71. When the piston 73 passes the spring... After the ball 712 is released, the resistance it experiences decreases instantly, and the accumulated pressure energy is converted into the upward kinetic energy of the piston 73, forming a powerful stroke that causes the piston 73 to move continuously upward. The sliding hole 74 disengages from the plug 76, and the steam in the heat-absorbing liquid chamber 41 enters the gas chamber 43 through the sliding hole 74 and the fixed ring 72, then diffuses into several condensation tanks 62 for condensation. During this process, the pressure difference between the heat-absorbing liquid chamber 41 and the condensation liquid chamber 42 continuously decreases. Under the elastic force of the spring A70, the piston 73 returns to its initial state, thereby intermittently and on demand controlling the steam release and condensation cycle. The steam release frequency and heat dissipation intensity are directly linked to the heating power of the light source module 2. When the heat generation is high, vaporization is accelerated, pressure accumulates quickly, and the pressure accumulator valve mechanism 7 opens more frequently, thus enhancing the active condensation and heat dissipation effect of the heat sink 6. When the heat generation is low, the pressure accumulator valve mechanism 7 opens at a low frequency or does not open at all, which avoids energy waste caused by continuous heat dissipation, allowing the light source module 2 to operate within an appropriate operating temperature range.

[0041] In embodiments of the present invention, such as Figure 3 ,as well as Figure 7As shown, the liquid delivery shaft 8 is rotatably mounted on the circular groove. A crossbar A81 is fixed at one end of the liquid delivery shaft 8 near the annular pipe 71, and a crossbar B82 is fixed at the other end of the liquid delivery shaft 8 away from the annular pipe 71. Both the crossbar A81 and the crossbar B82 are rotatably connected to the heat insulation body 4. A liquid transport groove 83 is opened at the top of the crossbar B82. The pre-set groove 45 and the wide pipe 46 are connected and cooperate with the liquid transport groove 83. Through the structural design of the liquid delivery shaft 8, in the initial state, the liquid transport tank 83 is connected to the pre-positioned tank 45, allowing the low-boiling-point liquid in the pre-positioned tank 45 to enter the liquid transport tank 83. When the liquid delivery shaft 8 rotates and the liquid transport tank 83 is connected to the wide pipe 46, the liquid in the liquid transport tank 83 enters the heat absorption liquid chamber 41 from the wide pipe 46. The liquid level of the low-boiling-point liquid in the heat absorption liquid chamber 41 is higher than the bottom of the wide pipe 46, preventing the vapor generated by the vaporization of the low-boiling-point liquid from entering the condensate chamber 42 from the wide pipe 46. Afterward, the liquid delivery shaft 8 continues to rotate, causing the liquid transport tank 83 to reconnect with the pre-positioned tank 45.

[0042] In embodiments of the present invention, such as Figure 8 , Figure 9 , Figure 10 , Figure 11 ,as well as Figure 12 As shown, the transmission assembly 9 includes a rotating shaft 91, a cam 92, and a connecting arm 95. The rotating shaft 91 is rotatably disposed at the bottom of the cavity of the annular tube 71, extends out of the annular tube 71, and is fixedly connected to the crossbar A81. The cam 92 is fixedly disposed on the rotating shaft 91. The connecting arm 95 is rotatably disposed on the movable cavity 77 via a rotating rod, and the bottom end of the connecting arm 95 is connected to the cam 92 via a rotating body 93. Through the above arrangement, when the piston 73 rises and falls, the movable cavity 77 drives the connecting arm 95 to rise and fall via the rotating rod, thereby causing the cam 92 to drive the rotating shaft 91 and the crossbar A81 to rotate. This results in a quantitative displacement between the release of steam and the reflux of low-boiling-point liquid, achieving liquid circulation.

[0043] In embodiments of the present invention, such as Figure 10 , Figure 11 ,as well as Figure 12 As shown, the cam 92 has a sloping groove 94, and the rotating body 93 is movably disposed within the sloping groove 94 and rotatably connected to the bottom end of the connecting arm 95. This invention, through the design of the sloping groove 94, achieves... Figure 11As shown, when the piston 73 rises, the connecting arm 95 drives the rotating body 93 to move along the inclined groove 94 towards the rotating shaft 91 until it reaches the top of the inclined groove 94. At this time, the connecting arm 95 is in an inclined state. When the piston 73 continues to rise, the connecting arm 95 drives the cam 92 to rotate in one direction through the rotating body 93. At this time, the rotating body 93 rotates relative to the end of the inclined groove 94. When the piston 73 rises to the maximum position, the connecting arm 95 drives the rotating body 93 to move back to the end of the inclined groove 94 away from the rotating shaft 91. When the piston 73 falls, the connecting arm 95 drives the rotating body 93 to move along the inclined groove 94 towards the rotating shaft 91. The connecting arm 95 is in an inclined state. When the piston 73 continues to fall, the connecting arm 95 drives the cam 92 to rotate in the same direction through the rotating body 93, so that the cam 92 drives the rotating shaft 91 to rotate in the same direction.

[0044] In embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 ,as well as Figure 6 As shown, the cleaning mechanism 10 is located at the top of the heat sink 6. The cleaning mechanism 10 includes several horizontal shafts 101, several toothed rings 104, a pulley A105, and a pulley B106. The several horizontal shafts 101 are respectively mounted on several heat sinks A61. A scraper 102 adapted to the shape of the heat sink A61 is fixed on the horizontal shaft 101. Several rotating rings 103 are fixed on the scraper 102. The rotating rings 103 are rotatably connected to the heat sink A61, and the rotating rings 103 are adapted to the shape of the heat sink A61. The several toothed rings 104 are respectively mounted on the several horizontal shafts. At the end of 101 away from the crossbar A81, a toothed ring 104 is fixedly connected to the horizontal shaft 101 via several connecting plates arranged in a ring with equal spacing. Adjacent toothed rings 104 mesh with each other. A pulley A105 is located on one of the toothed rings 104 near the crossbar A81 and is fixedly connected to the corresponding horizontal shaft 101. A pulley B106 is located below the pulley A105 and is connected to the pulley A105 via a drive belt 107. The crossbar B82 passes through the heat insulation body 4 and is fixedly connected to the pulley B106. Through the above arrangement, the crossbar B82 rotates, and the pulley B106 drives the pulley A105 and the corresponding horizontal shaft 101 to rotate via the drive belt 107, causing the toothed rings 104 to rotate. This, in turn, causes the horizontal shafts 101 and the scrapers 102 to rotate, cleaning the surface of the heat dissipation groove A61.

[0045] Working principle: This embodiment provides an energy-saving street light source with automatic cooling. When in use, the light source module 2 generates heat, which is conducted to the heat-absorbing block 5 that is in close contact with it. The heat-absorbing block 5 and the heat-absorbing liquid chamber 41 form a closed cavity filled with a low-boiling-point liquid. After absorbing heat, the liquid vaporizes. At this time, it is at the boiling point temperature of the low-boiling-point liquid. The steam pressure causes the steam pressure in the heat-absorbing liquid chamber 41 to continue to rise. At this time, under the pre-tightening force of the spring A70 and the blocking action of the elastic ball 712, the piston 73 of the pressure accumulator valve mechanism 7 is kept in the lower position, and its sliding hole 74 is blocked by the plug 76 at the top of the vertical rod 75. The valve is in the closed state, forming a closed steam environment. The heat is effectively stored in the heat-absorbing liquid chamber 41, which is beneficial for the light source module 2 to heat up and keep warm in a low-temperature environment. As the light source module 2 continues to operate, the steam pressure in the heat-absorbing liquid chamber 41 continuously accumulates. When the pressure difference between the heat-absorbing liquid chamber 41 and the condensate chamber 42 exerts an upward force on the piston 73, sufficient to overcome the elastic force of the spring A70 and the resistance of the elastic ball 712 to the piston 73, the piston 73 begins to slide upward along the ring tube 71. Once the piston 73 passes the elastic ball 712, the resistance decreases sharply, and the piston 73 moves rapidly to the top under the action of the pressure difference. During this process, the sliding hole 74 disengages from the plug 76, and the high-temperature and high-pressure steam in the heat-absorbing liquid chamber 41 passes through the sliding hole 74, the space above the fixed ring 72, and the gas chamber 43 in sequence, and finally diffuses into several condensation grooves 62 at the bottom of the heat sink 6. The steam condenses into liquid on the lower temperature condensation groove 62 wall surface, releasing the latent heat of vaporization. This heat is dissipated into the outside air through the heat sink 6 and the heat sink A61 on its top. While the steam condenses and releases heat, the pressure in the heat absorption liquid chamber 41 decreases. Under the restoring force of the spring A70, the piston 73 begins to return downward. The lifting and lowering motion of the piston 73 drives the connecting arm 95 to move up and down through the movable chamber 77 at its bottom. The rotating body 93 at the bottom of the connecting arm 95 moves in the inclined groove 94 of the cam 92, converting the linear motion of the connecting arm 95 into the unidirectional rotational motion of the cam 92. The cam 92 drives the rotating shaft 91 and the crossbar A81 fixed thereto to rotate, thereby driving the liquid delivery shaft 8 to rotate. The rotation of the liquid delivery shaft 8 causes the connection state of the liquid transport tank 83 at its top to change periodically. From receiving condensate collected in the condensate chamber 42 connected to the pre-set tank 45, it rotates to connect with the wide pipe 46, returning a fixed amount of condensate to the heat absorption liquid chamber 41 through the wide pipe 46, completing the circulation and replenishment of the low-boiling-point liquid. After that, the liquid delivery shaft 8 continues to rotate, so that the liquid transport tank 83 is realigned with the pre-set tank 45, preparing for the next return flow. When the piston 73 is fully reset, the plug 76 is reinserted into the sliding hole 74, the accumulator valve mechanism 7 closes again, and the next cycle begins. While the liquid delivery shaft 8 rotates to complete the working fluid reflux, the crossbar B82 at its other end rotates synchronously. The crossbar B82 drives the pulley B106, which in turn drives the pulley A105 and a coaxial horizontal shaft 101 to rotate via the transmission belt 107. The horizontal shaft 101 drives all the meshing gear rings 104 to rotate synchronously via the gear ring 104 fixed to its end, thereby causing all the horizontal shafts 101 and the scrapers 102 on them to rotate together. During the rotation, the scrapers 102 scrape the inner wall of the heat dissipation groove A61 to achieve automatic cleaning and ensure the heat dissipation efficiency of the heat dissipation block 6.

[0046] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An energy-saving street light source with automatic cooling, characterized in that, Includes a housing (1), a light source module (2) is provided inside the housing (1), a lens (3) is fixed at the bottom of the housing (1), a heat insulation body (4) is fixed at the top of the housing (1), the bottom end of the heat insulation body (4) penetrates into the housing (1) and has a heat-absorbing liquid cavity (41), the top end of the heat insulation body (4) extends out of the housing (1) and has a condensate cavity (42), a gas cavity (43) is provided on one side of the condensate cavity (42), a gas channel (44) is provided at the bottom of the gas cavity (43) and communicates with the top end of the heat-absorbing liquid cavity (41), and an installation annular groove (40) is provided on the gas channel (44). 40) A pressure accumulator valve mechanism (7) is fixedly provided on the upper part. A pre-set groove (45) is opened at the bottom end of the condensate chamber (42). A circular groove is opened at the bottom end of the pre-set groove (45). A liquid delivery shaft (8) is rotatably provided on the circular groove. The liquid delivery shaft (8) is connected to the pressure accumulator valve mechanism (7) through a transmission assembly (9). A heat absorption block (5) connected to the top end of the light source module (2) is fixedly provided at the bottom end of the heat insulation body (4). A heat dissipation block (6) is fixedly provided at the top end of the heat dissipation block (6). A cleaning mechanism (10) is provided at the top end of the heat dissipation block (6). The output end of the cleaning mechanism (10) is connected to the end of the liquid delivery shaft (8) away from the transmission assembly (9). The closed cavity formed by the heat-absorbing block (5) and the heat-absorbing liquid chamber (41) is filled with a low-boiling-point liquid.

2. The energy-saving street light source with automatic cooling according to claim 1, characterized in that, The top of the heat-absorbing liquid chamber (41) is fixed with a wide tube (46) that communicates with the bottom of the circular groove. The liquid level of the low-boiling-point liquid in the heat-absorbing liquid chamber (41) is higher than the bottom of the wide tube (46).

3. The energy-saving street light source with automatic cooling according to claim 1, characterized in that, The heat-absorbing block (5) has a heat-absorbing groove (51) at its bottom end, and the heat-absorbing groove (51) is detachably and fixedly connected to the top of the light source module (2).

4. The energy-saving street light source with automatic cooling according to claim 2, characterized in that, The top of the heat sink (6) is provided with a plurality of heat sink grooves A (61) evenly. The cross-section of the heat sink A (61) is arc-shaped and the cross-sectional area of ​​the heat sink A (61) gradually increases from the center of the groove to both ends. The bottom of the heat sink (6) is provided with a plurality of condensation grooves (62) evenly. The shape, size and distribution of the condensation grooves (62) are adapted to the structure of the heat sink (6), so that the cooling process is relatively uniform and efficient.

5. The energy-saving street light source with automatic cooling according to claim 4, characterized in that, The accumulator valve mechanism (7) includes a ring tube (71), a fixed ring (72), a piston (73), and two vertical rods (75). The ring tube (71) is fixed on the mounting ring groove (40), the fixed ring (72) is fixed at the top of the cavity of the ring tube (71), the piston (73) is located below the fixed ring (72) and is slidably connected to the cavity of the ring tube (71). The piston (73) and the fixed ring (72) are elastically connected by a spring A (70). Both ends of the piston (73) are provided with sliding holes (74). Both vertical rods (75) are fixed at the bottom of the ring tube (71). The bottom end of the vertical rod (75) is provided with a plug (76), and the plug (76) is slidably engaged with the sliding hole (74).

6. The energy-saving street light source with automatic cooling according to claim 5, characterized in that, The piston (73) has a movable cavity (77) at its bottom end. The inner surface of the ring tube (71) has a number of arc grooves (711) with equal spacing in an annular structure. An elastic ball (712) is movably mounted on the arc groove (711). The elastic ball (712) is elastically connected to the eccentric end of the arc groove (711) by a spring B (713).

7. The energy-saving street light source with automatic cooling according to claim 6, characterized in that, A crossbar A (81) is fixed at one end of the liquid delivery shaft (8) near the ring pipe (71), and a crossbar B (82) is fixed at the other end of the liquid delivery shaft (8) away from the ring pipe (71). Both the crossbar A (81) and the crossbar B (82) are rotatably connected to the heat insulation body (4). A liquid transport groove (83) is opened at the top of the crossbar B (82). The pre-set groove (45) and the wide pipe (46) are connected and cooperate with the liquid transport groove (83).

8. The energy-saving street light source with automatic cooling according to claim 7, characterized in that, The transmission assembly (9) includes a rotating shaft (91), a cam (92), and a connecting arm (95). The rotating shaft (91) is rotatably disposed at the bottom of the cavity of the annular tube (71). The rotating shaft (91) passes through the annular tube (71) and is fixedly connected to the crossbar A (81). The cam (92) is fixedly disposed on the rotating shaft (91). The connecting arm (95) is rotatably disposed on the movable cavity (77) through a rotating rod. The bottom end of the connecting arm (95) is connected to the cam (92) through a rotating body (93). The cam (92) has a groove (94) and the rotating body (93) is movably disposed in the groove (94) and rotatably connected to the bottom end of the connecting arm (95).

9. The energy-saving street light source with automatic cooling according to claim 8, characterized in that, The cleaning mechanism (10) includes several horizontal shafts (101) and several toothed rings (104). The several horizontal shafts (101) are respectively disposed on several heat dissipation grooves A (61). A scraper (102) adapted to the shape of the heat dissipation groove A (61) is fixed on the horizontal shaft (101). Several rotating rings (103) are fixed on the scraper (102). The rotating rings (103) are rotatably connected to the heat dissipation groove A (61) and the rotating rings (103) are adapted to the shape of the heat dissipation groove A (61). Several toothed rings (104) are respectively disposed at one end of the several horizontal shafts (101) away from the crossbar A (81). The toothed rings (104) and the horizontal shafts (101) are fixedly connected by several connecting plates arranged in a ring-shaped and equally spaced structure. Adjacent toothed rings (104) are meshed together.

10. The energy-saving street light source with automatic cooling according to claim 9, characterized in that, The cleaning mechanism (10) further includes pulley A (105) and pulley B (106). Pulley A (105) is located on one of the toothed rings (104) near the side of the crossbar A (81) and is fixedly connected to the corresponding cross shaft (101). Pulley B (106) is located below pulley A (105). Pulley B (106) and pulley A (105) are connected by a transmission belt (107). The crossbar B (82) passes through the heat insulation body (4) and is fixedly connected to pulley B (106).

Images