Overhead lighting device

Abstract

The invention discloses an overhead lighting appliance, and relates to the technical field related to lighting appliances, a sealing air bag is arranged above an LED lighting unit, and heat is conducted into the sealing air bag from the LED lighting unit by using a first radiator, so that a heat-conducting medium is gasified, and then the heat-conducting medium is condensed and flows back when rising to a second radiator; heat is diffused to the large-area vapor chamber from the second radiator and flows into the air, passive temperature control over the LED lighting unit in the lighting main lampshade is achieved, meanwhile, when the temperature is too high and the pressure in the sealed air bag is too large, the sealed air bag expands, the second radiator is disengaged from the metal base, and therefore the LED lighting unit is cooled. And the eccentric wheel and the sliding guide rail are matched to drive the first movable pulley and the second movable pulley to continuously rotate in a reciprocating manner, so that external cold air is pumped into the lighting main lampshade, the first auxiliary lampshade and the second auxiliary lampshade through the first airbag and the second airbag.

Description

Technical Field

[0001] The present invention relates to the technical field related to lighting fixtures, and in particular to a ceiling-mounted lighting fixture. Background Art

[0002] Overhead lighting fixtures refer to lighting equipment installed on the top of a room or on the ceiling. Their main function is to provide indoor lighting. Overhead lighting fixtures usually use high-efficiency and energy-saving light-emitting elements such as LEDs. Compared with traditional incandescent lamps or fluorescent lamps, they have lower energy consumption and longer service life. With the advancement of science and technology and the enhancement of environmental awareness, the demand for energy conservation and environmental protection of overhead lighting fixtures has become increasingly strong, which has directly promoted technological innovation and product upgrades in the industry.

[0003] High-power LED lighting fixtures will generate a lot of heat during operation, so high-power lighting fixtures inevitably need to dissipate heat. Traditional heat dissipation methods include passive heat dissipation and active heat dissipation.

[0004] Passive heat dissipation has low efficiency and cannot meet the heat dissipation requirements of high-power lighting fixtures. Active heat dissipation mostly uses air cooling, which is more efficient, but will generate additional energy consumption and does not meet the needs of energy conservation and environmental protection. Therefore, we need a more energy-saving and environmentally friendly ceiling-mounted lighting fixture. Summary of the invention

[0005] The object of the present invention is to provide a ceiling-mounted lighting device to solve the problem that the heat dissipation method of the traditional ceiling-mounted lighting device mentioned in the above background does not meet the environmental protection requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ceiling-mounted lighting fixture, comprising a main lighting lampshade, a first auxiliary lampshade and a second auxiliary lampshade are respectively arranged on both sides of the main lighting lampshade, a support hanger is arranged above the main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade, the support hanger is fixedly connected to the building through expansion screws, the left and right sides of the support hanger are respectively rotatably connected to the first fixed pulley and the second fixed pulley, the first fixed pulley and the second fixed pulley are symmetrically arranged on the support hanger, the left and right ends above the main lighting lampshade are respectively rotatably connected to the first movable pulley and the second movable pulley, a hanging steel wire rope is fixedly connected between the first auxiliary lampshade and the second auxiliary lampshade, and the hanging steel wire rope suspends the main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade through the first fixed pulley, the second fixed pulley, the first movable pulley and the second movable pulley; The main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade are all provided with LED lighting units, a metal seat is fixedly connected above the LED lighting unit, a sealed airbag is provided above the main lighting lampshade, a first radiator and a second radiator are provided in the sealed airbag, a heat spreader is fixedly connected to the upper end of the sealed airbag, a heat spreader is provided with heat dissipation fins, the first radiator is tightly fitted with the metal seat, the second radiator is tightly fitted with the heat spreader, and a heat conducting medium is poured into the sealed airbag; Both sides of the first movable pulley and the second movable pulley are fixedly connected with eccentric wheels, the outer side of the eccentric wheels is fixedly connected with an eccentric guide rod, the inner side of the heat spreader is fixedly connected with a sliding guide rail, and the eccentric guide rod is slidably connected with the sliding guide rail; A first airbag is arranged between the main lighting lampshade and the first auxiliary lampshade, and two ends of the first airbag are respectively connected to the main lighting lampshade and the first auxiliary lampshade, a first air intake filter is arranged on the left side of the first auxiliary lampshade, a second airbag is arranged between the main lighting lampshade and the second auxiliary lampshade, and two ends of the second airbag are respectively connected to the main lighting lampshade and the second auxiliary lampshade, a second air intake filter is arranged on the right side of the second auxiliary lampshade, and an air outlet pipe is arranged above the main lighting lampshade.

[0007] In one example, a hanging wire rope is fixedly connected above the first auxiliary lampshade. The hanging wire rope passes through the top of the first fixed pulley, the bottom of the first movable pulley and the second movable pulley, and the top of the second fixed pulley in sequence, and is finally fixedly connected to the second auxiliary lampshade, so that when the first auxiliary lampshade 2 rises, the second auxiliary lampshade 3 will drop, and when the first auxiliary lampshade 2 drops, the second auxiliary lampshade 3 will rise.

[0008] In one example, a telescopic sleeve is fixedly connected to the bottom of the second radiator, a telescopic rod passes through the telescopic sleeve, a first spring is arranged in the telescopic sleeve, the first spring is sleeved on the outside of the telescopic rod, the first spring is located between the spring baffle at the top of the telescopic rod and the contraction at the lower end of the telescopic sleeve, a first magnet is fixedly connected to the top of the metal seat, a second magnet is fixedly connected to the bottom of the first radiator, and different magnetic poles of the first magnet and the second magnet are facing each other.

[0009] In one example, the sealing airbag is made of vulcanized rubber flame-retardant thermally conductive adhesive, the side wall of the sealing airbag is folded in a zigzag shape, and the sealing airbag is sealed and connected to the heat spreader and the metal seat respectively.

[0010] In one example, anhydrous ethanol is selected as the heat-conducting medium in the sealed airbag. The boiling point of anhydrous ethanol under standard atmospheric pressure is 78.4°C, so it can quickly evaporate into steam when heated at the first radiator. When the steam rises to the second radiator with a lower temperature, it will condense when it encounters cold and drip back to the first radiator again. Therefore, by utilizing the fluidity of the steam, the heat can be quickly transferred from the first radiator and the metal seat to the second radiator and the heat spreader, and then quickly dissipated into the air by utilizing the heat dissipation fins 1501 on the heat spreader. This is the process of passive heat dissipation.

[0011] In one example, a first upper baffle is fixedly connected to the upper left side of the main lighting lampshade, a first lower baffle is fixedly connected to the lower right side of the first auxiliary lampshade, the first airbag is located between the first upper baffle and the first lower baffle, the upper end of the first airbag is fixedly connected to the first upper baffle, and the lower end of the first airbag is fixedly connected to the first lower baffle.

[0012] In one example, a first air inlet pipe is fixedly connected to the lower end of the first airbag, the first air inlet pipe is connected to the first auxiliary lamp cover, a first one-way valve is arranged in the first air inlet pipe, a first air outlet pipe is fixedly connected to the upper end of the first airbag, the first air outlet pipe is connected to the main lighting lamp cover, a second one-way valve is arranged in the first air outlet pipe, a first return spring is arranged in the first airbag, the upper end of the first return spring is in contact with the first upper baffle, and the lower end of the first return spring is in contact with the first lower baffle.

[0013] In one example, a second upper baffle is fixedly connected to the upper right side of the main lighting lampshade, a second lower baffle is fixedly connected to the lower left side of the second auxiliary lampshade, the second airbag is located between the second upper baffle and the second lower baffle, the upper end of the second airbag is fixedly connected to the second airbag, and the lower end of the second airbag is fixedly connected to the second lower baffle.

[0014] In one example, a second air inlet pipe is fixedly connected to the lower end of the second airbag, the second air inlet pipe is connected to the second auxiliary lamp cover, a third one-way valve is arranged in the second air inlet pipe, a second air outlet pipe is fixedly connected to the upper end of the second airbag, the second air outlet pipe is connected to the main lighting lamp cover, a fourth one-way valve is arranged in the second air outlet pipe, a second return spring is arranged in the second airbag, the upper end of the second return spring is in contact with the second upper baffle, and the lower end of the second return spring is in contact with the second lower baffle.

[0015] In one example, the air outlet pipe is located between two groups of sealed air bags, and the air outlet pipe includes a lifting sleeve, which is connected to the main lighting lamp cover, and a lifting piston runs through the lifting sleeve. The lifting sleeve is vertically provided with side air outlet grooves on both sides close to the sealed air bags, and the lower ends of the lifting pistons are fixedly connected with limit blocks, and the limit blocks are slidably connected to the side air outlet grooves. A second spring is arranged in the lifting sleeve, and the second spring is located below the lifting piston.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a ceiling-mounted lighting device, which uses a movable pulley and a fixed pulley to hang a main lighting lampshade, a first auxiliary lampshade and a second auxiliary lampshade on a building respectively, and then arranges a sealed airbag above the LED lighting unit, and contains a heat-conducting medium that is easily vaporized. The first radiator is used to conduct heat from the LED lighting unit to the sealed airbag, so that the heat-conducting medium is vaporized, and then condenses and refluxes when rising to the second radiator, so that the heat is diffused from the second radiator to a large-area heat spreader and then dispersed into the air, so as to realize passive temperature control of the LED lighting unit in the main lighting lampshade. At the same time, when the temperature is too high and the pressure in the sealed airbag is too high, the sealed airbag will expand, and the heat dissipation area of ​​the sealed airbag will increase, and the second radiator will be pulled up, thereby breaking away from the contact with the metal seat, resulting in heat conduction being blocked, so that the heat-conducting medium in the sealed airbag will condense quickly, causing the sealed airbag to retract, and through the cooperation of the eccentric wheel and the sliding guide rail, the first movable pulley and the second movable pulley will be driven to rotate back and forth continuously, so that the first and second auxiliary lampshades will continuously rise and fall, so that the first and second airbags are used to pump the external cold air into the main lighting lampshade, the first and second auxiliary lampshades. This has the following beneficial effects: 1. In this way, the heat can be quickly transferred from the first heat sink to the second heat sink and the heat spreader by utilizing the evaporation and flow of the heat-conducting medium, and is not affected by the thermal conductivity of the medium, but only by the flow rate of the medium, so the temperature of the LED lighting unit can be quickly reduced.

[0017] 2. By expanding the sealed airbag and pulling up the second radiator, rapid switching between passive heat dissipation and active heat dissipation can be achieved. When the temperature is not high enough to fully expand the sealed airbag, passive heat dissipation is achieved by utilizing the evaporation and condensation of the medium. When the temperature is too high and causes the sealed airbag to expand, the compression and expansion of the airbag are utilized to pump cold air into the main lampshade, the first auxiliary lampshade and the second auxiliary lampshade for active heat dissipation, which can effectively improve the heat dissipation efficiency without the need for additional energy, and is more energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the appearance structure of a ceiling-mounted lighting device of the present invention; Figure 2 This is a schematic diagram of the front view structure of a ceiling-mounted lighting device of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the sealing airbag of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the first radiator of the present invention; Figure 5 This is a schematic diagram of the eccentric wheel structure of the present invention; Figure 6 This is a schematic diagram of the structure of the first airbag of the present invention; Figure 7 This is a schematic diagram of the structure of the second airbag of the present invention; Figure 8 It is a schematic diagram of the structure of the air outlet pipe of the present invention.

[0019] Numbers in the figure: 1, main lighting lampshade; 101, first upper baffle; 102, second upper baffle; 2, first auxiliary lampshade; 201, first lower baffle; 3, second auxiliary lampshade; 301, second lower baffle; 4, support hanger; 5, first fixed pulley; 6, second fixed pulley; 7, first movable pulley; 8, second movable pulley; 9, hanging wire rope; 10, LED lighting unit; 11, metal seat; 1101, first magnet; 12, sealing airbag; 13, first radiator; 1301, second magnet; 14, second radiator; 15, heat spreader; 1501, cooling fin; 16, telescopic sleeve; 17, telescopic rod; 18, first spring; 19, eccentric Wheel; 1901, eccentric guide rod; 20, sliding guide rail; 21, first air bag; 2101, first air inlet pipe; 2102, first one-way valve; 2103, first air outlet pipe; 2104, second one-way valve; 2105, first return spring; 22, first air inlet filter; 23, second air bag; 2301, second air inlet pipe; 2302, third one-way valve; 2303, second air outlet pipe; 2304, fourth one-way valve; 2305, second return spring; 24, second air inlet filter; 25, air outlet pipe; 2501, lifting sleeve; 2502, lifting piston; 2503, side air outlet groove; 2504, limit block; 2505, second spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figure 1 - Figure 8As shown, a ceiling-mounted lighting fixture comprises a main lighting lampshade 1, a first auxiliary lampshade 2 and a second auxiliary lampshade 3 are respectively arranged on both sides of the main lighting lampshade 1, a support hanger 4 is arranged above the main lighting lampshade 1, the first auxiliary lampshade 2 and the second auxiliary lampshade 3, the support hanger 4 is fixedly connected to the building through expansion screws, the left and right sides of the support hanger 4 are respectively rotatably connected to the first fixed pulley 5 and the second fixed pulley 6, the first fixed pulley 5 and the second fixed pulley 6 are symmetrically arranged on the support hanger 4, the left and right ends above the main lighting lampshade 1 are respectively rotatably connected to the first movable pulley 7 and the second movable pulley 8, the first auxiliary lampshade 2 and the second auxiliary lampshade 3 are respectively rotatably connected to the first fixed pulley 5 and the second fixed pulley 6, A hanging wire rope 9 is fixedly connected between the covers 3, and a hanging wire rope 9 is fixedly connected above the first auxiliary lampshade 2. The hanging wire rope 9 passes through the top of the first fixed pulley 5, the bottom of the first movable pulley 7 and the second movable pulley 8, and the top of the second fixed pulley 6 in sequence, and is finally fixedly connected to the second auxiliary lampshade 3. The hanging wire rope 9 lifts the main lighting lampshade 1, the first auxiliary lampshade 2 and the second auxiliary lampshade 3 through the first fixed pulley 5, the second fixed pulley 6, the first movable pulley 7 and the second movable pulley 8, so that when the first auxiliary lampshade 2 rises, the second auxiliary lampshade 3 will fall, and when the first auxiliary lampshade 2 falls, the second auxiliary lampshade 3 will rise.

[0022] The main lighting lampshade 1, the first auxiliary lampshade 2 and the second auxiliary lampshade 3 are all provided with an LED lighting unit 10, a metal seat 11 is fixedly connected above the LED lighting unit 10, a sealing airbag 12 is provided above the main lighting lampshade 1, the sealing airbag 12 is made of vulcanized rubber flame-retardant thermal conductive adhesive, the side wall of the sealing airbag 12 is folded in a zigzag shape, and the sealing airbag 12 is sealed and connected to the heat spreader 15 and the metal seat 11 respectively, a first radiator 13 and a second radiator 14 are provided in the sealing airbag 12, the upper end of the sealing airbag 12 is fixedly connected to the heat spreader 15, the first radiator 13 is tightly fitted with the metal seat 11, and the second radiator 14 is tightly fitted with the heat spreader 15 The sealed airbag 12 is filled with a heat-conducting medium, and the heat-conducting medium in the sealed airbag 12 is anhydrous ethanol, and the boiling point of anhydrous ethanol under standard atmospheric pressure is 78.4°C, so that it can quickly evaporate into steam when heated at the first radiator 13, and when the steam rises to the second radiator 14 with a lower temperature, it will condense when it encounters cold and drip back to the first radiator 13 again, so as to utilize the fluidity of the steam to quickly transport the heat from the first radiator 13 and the metal seat 11 to the second radiator 14 and the heat spreader 15, and quickly dissipate into the air using the heat dissipation fins 1501 on the heat spreader 15, which is the process of passive heat dissipation.

[0023] A telescopic sleeve 16 is fixedly connected to the bottom of the second radiator 14, a telescopic rod 17 is passed through the telescopic sleeve 16, a first spring 18 is arranged in the telescopic sleeve 16, the first spring 18 is sleeved on the outside of the telescopic rod 17, the first spring 18 is located between the spring baffle at the top of the telescopic rod 17 and the contraction at the lower end of the telescopic sleeve 16, a first magnet 1101 is fixedly connected to the top of the metal seat 11, a second magnet 1301 is fixedly connected to the bottom of the first radiator 13, and the first magnet 1101 and the second magnet 1301 have different magnetic poles facing each other, so that when the temperature of the LED lighting unit 10 is too high, the evaporation amount of the heat-conducting medium in the sealed airbag 12 is greater than the condensation amount, which will cause the pressure in the sealed airbag 12 to increase, and the sealed airbag 12 will expand. When the sealed airbag 12 expands, it will cause the telescopic The rod 17 is pulled upward, so that the first magnet 1101 and the second magnet 1301 are desorbed, so that the first heat sink 13 is pulled up and decoupled from the metal seat 11, so that the heat conduction of the LED lighting unit 10 into the sealed airbag 12 is blocked, and at the same time, the folds of the side walls of the sealed airbag 12 will unfold, increasing the heat exchange area with the air and improving the cooling effect. Therefore, under the dual effect, the heat-conducting medium is quickly cooled and condensed, so that the sealed airbag 12 retracts again. After retraction, the first magnet 1101 and the second magnet 1301 will contact and adsorb again, which will cause the first heat sink 13 to contact the metal seat 11 again, accelerating heat conduction. At the same time, the folded side walls of the sealed airbag 12 will also reduce the heat loss rate, causing the sealed airbag 12 to expand again.

[0024] The first movable pulley 7 and the second movable pulley 8 are fixedly connected with eccentric wheels 19 on both sides, and an eccentric guide rod 1901 is fixedly connected to the outer side of the eccentric wheel 19, and a sliding guide rail 20 is fixedly connected to the inner side of the heat spreader 15. The eccentric guide rod 1901 is slidably connected to the sliding guide rail 20, so that in the process of continuous expansion and contraction of the sealing airbag 12, the heat spreader 15 will also be continuously lifted and then lowered, so that through the cooperation of the sliding guide rail 20 and the eccentric guide rod 1901, the eccentric wheel 19 will be driven to continuously reciprocate, so that the first movable pulley 7 and the second movable pulley 8 will also be continuously reciprocating, so that the hanging wire rope 9 is used to drive the first sub-lampshade 2 and the second sub-lampshade 3 to rise and fall in turn.

[0025] In addition, a first airbag 21 is arranged between the main lighting lampshade 1 and the first auxiliary lampshade 2, and two ends of the first airbag 21 are respectively connected to the main lighting lampshade 1 and the first auxiliary lampshade 2, a first air intake filter 22 is arranged on the left side of the first auxiliary lampshade 2, a second airbag 23 is arranged between the main lighting lampshade 1 and the second auxiliary lampshade 3, two ends of the second airbag 23 are respectively connected to the main lighting lampshade 1 and the second auxiliary lampshade 3, a second air intake filter 24 is arranged on the right side of the second auxiliary lampshade 3, an air outlet pipe 25 is arranged above the main lighting lampshade 1, a first upper baffle 101 is fixedly connected to the upper left side of the main lighting lampshade 1, a first lower baffle 201 is fixedly connected to the lower right side of the first auxiliary lampshade 2, the first airbag 21 is located between the first upper baffle 101 and the first lower baffle 201, and the upper end of the first airbag 21 is connected to The first upper baffle plate 101 is fixedly connected, the lower end of the first airbag 21 is fixedly connected to the first lower baffle plate 201, the lower end of the first airbag 21 is fixedly connected to the first air inlet pipe 2101, the first air inlet pipe 2101 is communicated with the first auxiliary lampshade 2, a first one-way valve 2102 is arranged in the first air inlet pipe 2101, the upper end of the first airbag 21 is fixedly connected to the first air outlet pipe 2103, the first air outlet pipe 2103 is communicated with the main lighting lampshade 1, a second one-way valve 2104 is arranged in the first air outlet pipe 2103, a first return spring 2105 is arranged in the first airbag 21, the upper end of the first return spring 2105 contacts the first upper baffle plate 101, the lower end of the first return spring 2105 contacts the first lower baffle plate 201, the upper right side of the main lighting lampshade 1 is fixedly connected There is a second upper baffle plate 102, a second lower baffle plate 301 is fixedly connected to the lower left side of the second auxiliary lampshade 3, the second airbag 23 is located between the second upper baffle plate 102 and the second lower baffle plate 301, the upper end of the second airbag 23 is fixedly connected to the second airbag 23, the lower end of the second airbag 23 is fixedly connected to the second lower baffle plate 301, the lower end of the second airbag 23 is fixedly connected to a second air inlet pipe 2301, the second air inlet pipe 2301 is communicated with the second auxiliary lampshade 3, a third one-way valve 2302 is arranged in the second air inlet pipe 2301, a second air outlet pipe 2303 is fixedly connected to the upper end of the second airbag 23, the second air outlet pipe 2303 is communicated with the main lighting lampshade 1, a fourth one-way valve 2304 is arranged in the second air outlet pipe 2303, and a second reset valve 23 is arranged in the second airbag 23. Spring 2305, the upper end of the second return spring 2305 contacts the second upper baffle 102, and the lower end of the second return spring 2305 contacts the second lower baffle 301. When the first auxiliary lampshade 2 descends, the distance between the first upper baffle 101 and the first lower baffle 201 will increase, thereby stretching the first airbag 21, so that the volume inside the first airbag 21 increases, and at the same time the first one-way valve 2102 opens and the second one-way valve 2104 closes, so that the first airbag 21 draws air from the first auxiliary lampshade 2, and the external cold air enters the first auxiliary lampshade 2 through the first air inlet filter 22 on the left side of the first auxiliary lampshade 2, dissipates the heat of the LED lighting unit 10 in the first auxiliary lampshade 2, and then enters the first airbag 21. When the first auxiliary lampshade 2 rises,The distance between the first upper baffle plate 101 and the first lower baffle plate 201 will decrease, thereby compressing the first airbag 21. At this time, the first one-way valve 2102 is closed, and the second one-way valve 2104 is opened, thereby pumping the air in the first airbag 21 into the main lighting lampshade 1. Similarly, the second airbag 23 will continuously pump air from the outside into the second auxiliary lampshade 3 and the main lighting lampshade 1, thereby actively dissipating heat. The air in the main lighting lampshade 1 flows out through the air outlet pipe 25. The air outlet pipe 25 is located between the two sets of sealed airbags 12. The air outlet pipe 25 includes a lifting sleeve 2501. The lifting sleeve 2501 and the lighting main lampshade 1 are connected to each other. The main lampshade 1 is connected, and a lifting piston 2502 runs through the lifting sleeve 2501. The lifting sleeve 2501 is vertically provided with side air outlet grooves 2503 on both sides near the sealing airbag 12. The lower ends of the lifting piston 2502 are fixedly connected with limit blocks 2504. The limit blocks 2504 are slidably connected with the side air outlet grooves 2503. A second spring 2505 is arranged in the lifting sleeve 2501. The second spring 2505 is located below the lifting piston 2502, so that the outflowing air will be blown to the adjacent sealing airbag 12 from the side air outlet grooves 2503 on both sides, thereby increasing the heat dissipation effect of the sealing airbag 12.

[0026] In another embodiment, acetone is selected as the heat-conducting medium. The thermal resistance of acetone is lower than that of ethanol, and the boiling point of acetone is 56.12°C, which is also lower than that of ethanol. Therefore, at the same temperature, acetone is easier to evaporate and has advantages in certain heat exchanges. However, the chemical properties of acetone are more active, chemical reactions are more likely to occur, and the safety is lower.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ceiling-mounted lighting fixture, characterized in that: It comprises a main lighting lampshade, a first auxiliary lampshade and a second auxiliary lampshade are respectively arranged on both sides of the main lighting lampshade, a support hanger is arranged above the main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade, the support hanger is fixedly connected to the building by expansion screws, and the main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade are hung on the support hanger; The main lighting lampshade, the first auxiliary lampshade and the second auxiliary lampshade are all provided with LED lighting units, a metal seat is fixedly connected above the LED lighting unit, a sealed airbag is provided above the main lighting lampshade, a first radiator and a second radiator are provided in the sealed airbag, a heat spreader is fixedly connected to the upper end of the sealed airbag, a heat spreader is provided with cooling fins, the first radiator is tightly fitted with the metal seat, the second radiator is tightly fitted with the heat spreader, and a heat conducting medium is poured into the sealed airbag; A first airbag is arranged between the main lighting lampshade and the first auxiliary lampshade, and two ends of the first airbag are respectively connected to the main lighting lampshade and the first auxiliary lampshade, a first air intake filter is arranged on the left side of the first auxiliary lampshade, a second airbag is arranged between the main lighting lampshade and the second auxiliary lampshade, and two ends of the second airbag are respectively connected to the main lighting lampshade and the second auxiliary lampshade, a second air intake filter is arranged on the right side of the second auxiliary lampshade, and an air outlet pipe is arranged above the main lighting lampshade.

2. The ceiling-mounted lighting fixture according to claim 1, characterized in that: The left and right sides of the supporting hanger are rotatably connected to the first fixed pulley and the second fixed pulley respectively, and the first fixed pulley and the second fixed pulley are symmetrically arranged on the supporting hanger, and the left and right ends above the main lighting lamp cover are rotatably connected to the first movable pulley and the second movable pulley respectively, and the first auxiliary lamp cover and the second auxiliary lamp cover are fixedly connected between the first and second auxiliary lamp covers, and the hanging steel wire rope is fixedly connected to the top of the first auxiliary lamp cover, and the hanging steel wire rope passes through the top of the first fixed pulley, the bottom of the first movable pulley and the second movable pulley and the top of the second fixed pulley in sequence, and is finally fixedly connected to the second auxiliary lamp cover, and the first movable pulley and the second movable pulley are fixedly connected on both sides of the first movable pulley and the second movable pulley, and the eccentric wheel is fixedly connected to the eccentric guide rod on the outer side of the eccentric wheel, and the sliding guide rail is fixedly connected to the inner side of the heat spreader, and the eccentric guide rod is slidably connected to the sliding guide rail.

3. The ceiling-mounted lighting fixture according to claim 1, characterized in that: A telescopic sleeve is fixedly connected to the lower part of the second radiator, a telescopic rod is passed through the telescopic sleeve, a first spring is arranged in the telescopic sleeve, the first spring is sleeved on the outer side of the telescopic rod, the first spring is located between the spring baffle at the top of the telescopic rod and the contraction at the lower end of the telescopic sleeve, a first magnet is fixedly connected to the top of the metal seat, a second magnet is fixedly connected to the bottom of the first radiator, and the first magnet and the second magnet have different magnetic poles facing each other.

4. The ceiling-mounted lighting fixture according to claim 1, characterized in that: The sealing airbag is made of vulcanized rubber flame-retardant heat-conducting adhesive, the side wall of the sealing airbag is folded in a zigzag shape, and the sealing airbag is sealed and connected to the heat spreader and the metal seat respectively.

5. The ceiling-mounted lighting fixture according to claim 1, characterized in that: The heat conducting medium in the sealed airbag is anhydrous ethanol.

6. The ceiling-mounted lighting fixture according to claim 1, characterized in that: A first upper baffle is fixedly connected to the upper left side of the main lighting lampshade, a first lower baffle is fixedly connected to the lower right side of the first auxiliary lampshade, the first airbag is located between the first upper baffle and the first lower baffle, the upper end of the first airbag is fixedly connected to the first upper baffle, and the lower end of the first airbag is fixedly connected to the first lower baffle.

7. A ceiling-mounted lighting fixture as claimed in claim 6, characterized in that: A first air inlet pipe is fixedly connected to the lower end of the first airbag, which is communicated with the first auxiliary lamp cover, and a first one-way valve is arranged in the first air inlet pipe. A first air outlet pipe is fixedly connected to the upper end of the first airbag, which is communicated with the main lighting lamp cover, and a second one-way valve is arranged in the first air outlet pipe. A first return spring is arranged in the first airbag, and the upper end of the first return spring contacts the first upper baffle plate, and the lower end of the first return spring contacts the first lower baffle plate.

8. The ceiling-mounted lighting fixture according to claim 1, characterized in that: A second upper baffle is fixedly connected to the upper right side of the main lighting lampshade, a second lower baffle is fixedly connected to the lower left side of the second auxiliary lampshade, the second airbag is located between the second upper baffle and the second lower baffle, the upper end of the second airbag is fixedly connected to the second airbag, and the lower end of the second airbag is fixedly connected to the second lower baffle.

9. The ceiling-mounted lighting fixture according to claim 8, characterized in that: A second air inlet pipe is fixedly connected to the lower end of the second airbag, the second air inlet pipe is communicated with the second auxiliary lamp cover, a third one-way valve is arranged in the second air inlet pipe, a second air outlet pipe is fixedly connected to the upper end of the second airbag, the second air outlet pipe is communicated with the main lighting lamp cover, a fourth one-way valve is arranged in the second air outlet pipe, a second return spring is arranged in the second airbag, the upper end of the second return spring is in contact with the second upper baffle plate, and the lower end of the second return spring is in contact with the second lower baffle plate.

10. The ceiling-mounted lighting fixture according to claim 1, characterized in that: The air outlet pipe is located between two groups of sealed air bags, and the air outlet pipe includes a lifting sleeve, which is connected to the main lighting lamp cover, and a lifting piston runs through the lifting sleeve. The lifting sleeve is vertically provided with side air outlet grooves on both sides close to the sealed air bags, and the lower ends of the lifting pistons are fixedly connected with limit blocks, and the limit blocks are slidably connected to the side air outlet grooves. A second spring is arranged in the lifting sleeve, and the second spring is located below the lifting piston.

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