CN213421037U

CN213421037U - Over-temperature protection device of LED driving power supply

Info

Publication number: CN213421037U
Application number: CN202022472261.7U
Authority: CN
Inventors: 连家滨
Original assignee: Fujian Brisun Lighting Electrical Appliance Co ltd
Current assignee: Fujian Brisun Lighting Electrical Appliance Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-06-11
Anticipated expiration: 2030-10-31

Abstract

The invention relates to the technical field of LED driving power supplies, and discloses an over-temperature protection device of an LED driving power supply, which comprises an LED driving power supply shell, wherein the upper surface of the LED driving power supply shell is fixedly connected with a control shell, the upper surface of the LED driving power supply shell is respectively and fixedly connected with two cooling fans, an isolation plate is fixedly connected inside the control shell, a piston rod is movably sleeved on the isolation plate, one end of the piston rod, which is positioned on the lower surface of the isolation plate, is fixedly connected with a piston block, the inner wall of the top of the control shell is provided with a button switch, and a heat-conducting fin is embedded in the lower wall of the control shell. This LED drive power supply's excess temperature protection device can cool down drive circuit board, has reduced drive circuit board time in the high temperature environment for a long time, has avoided drive circuit board inside IC to appear the condition of damaging under the state of high temperature, has further improved LED drive power supply's life.

Description

Over-temperature protection device of LED driving power supply

Technical Field

The invention relates to the technical field of LED driving power supplies, in particular to an over-temperature protection device of an LED driving power supply.

Background

The LED driving power supply is a power supply converter which converts power supply into specific voltage and current to drive the LED to emit light, under the condition that the LED driving power supply works for a long time, the situation that the IC and other elements in a driving circuit board generate heat can occur, the maximum heat resistance value of the elements on the general circuit board is 70 degrees, but most of the existing LED driving power supplies do not have over-temperature protection devices, and then when the driving circuit board is at the temperature of 70 degrees or above for a long time, the IC on the circuit board is easy to damage, so the normal service life of the LED driving power supply is influenced, and the using effect of the LED driving power supply is reduced.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the over-temperature protection device of the LED driving power supply, which has the advantages of automatic cooling when the temperature in the LED driving power supply reaches a certain value, and the like, and solves the problem that the LED driving power supply is damaged when being in a high-temperature state for a long time.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: LED drive power supply's excess temperature protection device, including LED drive power supply shell, the last fixed surface of LED drive power supply shell is connected with control housing, control housing's lower extreme runs through into the inside of LED drive power supply shell, two radiator fan of last fixed surface difference of LED drive power supply shell, control housing's the isolated board of inside fixed connection, the piston rod has been cup jointed in the activity on the isolated board, the piston rod is located one of isolated board lower surface and serves fixedly connected with piston block, piston block and control housing's inner wall sliding connection, be provided with button switch on control housing's the top inner wall, the upper end of piston rod contacts with button switch's lower extreme, it has the conducting strip to inlay in the control housing lower wall.

Preferably, both sides are two conduction boards of fixedly connected with respectively around the control shell is located the inside one end of LED drive power supply shell, the left and right sides of conduction board is fixed connection respectively on the left and right sides inner wall of LED drive power supply shell, two the one end that control shell was kept away from to the conduction board does not contact with the inside of LED drive power supply shell.

Preferably, an included angle of 30 degrees is formed between the conducting plates and the inner wall of the bottom of the LED driving power supply shell, the two conducting plates are in a reversed V shape in the LED driving power supply shell, and the two conducting plates are located right above the driving circuit board.

Preferably, the outer surface of the piston block is fixedly sleeved with a rubber sealing ring.

Preferably, the upper surface of the piston block is fixedly connected with a spring, the upper end of the spring is fixedly connected to the lower surface of the isolation plate, and the spring is movably sleeved on the piston rod.

Preferably, the piston rod penetrates through one end of the upper surface of the isolation plate and is fixedly connected with a buffer sponge.

(III) advantageous effects

Compared with the prior art, the invention provides the over-temperature protection device of the LED driving power supply, which has the following beneficial effects:

1. when the over-temperature protection device of the LED driving power supply is used, the driving circuit board can continuously generate heat under the long-time use condition, the heat is gathered to the lower surface of the heat conducting fins through the two conducting plates, the heat conducting fins transmit the heat to the inside of the control shell, air generates a driving force on the piston block in the process of thermal expansion, the piston block further pushes the piston rod to move upwards, the upper end of the piston rod is contacted with the button switch, the button switch respectively controls the two cooling fans to be started, cold air is generated to be blown into the LED driving power supply shell, the driving circuit board can be cooled, the time that the driving circuit board is in a high-temperature environment for a long time is reduced, the condition that an internal IC of the driving circuit board is damaged under the high-temperature state is avoided, and the service life of the LED driving power supply is further prolonged, the LED driving power supply is prevented from being damaged, the condition that the LED driving power supply is damaged is avoided, and the working force of workers is reduced.

2. This LED drive power supply's excess temperature protection device, become 30 contained angles between the bottom inner wall of conduction board and LED drive power supply shell, two conduction boards become the V word form that reverses in LED drive power supply shell like this, two conduction boards are located dirver top of dirver circuit board simultaneously, simultaneously according to the principle that hot air rises, two conduction boards can be better with the produced heat gathering of dirver circuit board to the heat-conducting strip like this, the thermal loss has been reduced, the temperature in the control shell and the synchronism that dirver circuit board produced the temperature have been improved, the device's practical function has been improved, and to the accuracy of cooling in the LED drive power supply.

3. This LED drive power supply's excess temperature protection device has cup jointed rubber seal with the surface of piston piece, and when piston piece carried out displacement from top to bottom in control housing like this, rubber seal had avoided the condition that the air between piston piece lower surface and the control housing appeared leaking.

4. This LED drive power supply's excess temperature protection device is provided with the buffering sponge through serving the piston rod to run through out isolated board upper surface, and then has slowed down produced impact when piston rod and button switch contact, avoids button switch the condition that damages to appear, and then has improved button switch's life.

Drawings

FIG. 1 is a schematic structural diagram of an over-temperature protection device of an LED driving power supply according to the present invention;

FIG. 2 is a sectional view showing the internal structure of the control housing according to the present invention;

fig. 3 is a sectional view of the internal structure of the LED driving power supply housing according to the present invention.

In the figure: the LED driving power supply comprises an LED driving power supply shell 1, a control shell 2, a heat radiating fan 3, an isolation plate 4, a piston rod 5, a piston block 6, a rubber sealing ring 7, a spring 8, a button switch 9, a heat conducting sheet 10, a conduction plate 11 and a buffer sponge 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a new technical solution: the over-temperature protection device of the LED driving power supply comprises an LED driving power supply shell 1, a control shell 2 is fixedly connected to the upper surface of the LED driving power supply shell 1, the control shell 2 is cylindrical in structure, meanwhile, the interior of the control shell 2 is hollow, the lower end of the control shell 2 penetrates through the upper surface of the LED driving power supply shell 1 and extends into the interior of the LED driving power supply shell 1, the outer surface of the control shell 2 is provided with heat insulation coating, the influence of external temperature on the internal temperature of the control shell 2 is further prevented, the upper surface of the LED driving power supply shell 1 is fixedly connected with two cooling fans 3 respectively, the two cooling fans 3 are fixedly connected to the front side and the rear side of the upper surface of the LED driving power supply shell 1 respectively by taking the control shell 2 as a dividing line, the cooling fans 3 are not described in much detail for the existing structure, and meanwhile, the air inlet at the lower end of each cooling fan 3 also extends into the LED driving power supply shell 1;

an isolation plate 4 is fixedly connected inside the control shell 2, the isolation plate 4 divides the internal space of the control shell 2 into two areas, a sealing movable area is formed between the lower surface of the isolation plate 4 and the control shell 2, a control area is formed between the upper surface of the isolation plate 4 and the control shell 2, a piston rod 5 is movably sleeved on the isolation plate 4, two ends of the piston rod 5 respectively penetrate through the upper side surface and the lower side surface of the isolation plate 4, a piston block 6 is fixedly connected to one end of the piston rod 5 penetrating out of the lower surface of the isolation plate 4, the outer surface of the piston block 6 is in sliding connection with the inside of the control shell 2, a rubber sealing ring 7 is fixedly sleeved on the outer surface of the piston block 6, the rubber sealing ring 7 is an existing structure and does not have excessive description, and further, when the piston block 6 is displaced up and down in the control shell 2, the rubber sealing ring 7 avoids the condition that air between, the upper surface of the piston block 6 is fixedly connected with a spring 8, the upper end of the spring 8 is fixedly connected to the lower surface of the isolation plate 4, the spring 8 is movably sleeved on the piston rod 5, the spring 8 has certain strength, and the spring 8 has certain dragging effect on the piston block 6, so that the situation that the piston block 6 falls under the action of self gravity is avoided, and meanwhile, the situation that the piston rod 5 is separated from the isolation plate 4 is also prevented;

the button switch 9 is arranged on the inner wall of the top of the control shell 2, the button switch 9 is not redundant in the existing structure, the button switch 9 and the piston rod 5 are located at the same vertical position, the upper end of the piston rod 5 can be in contact with the button switch 9, meanwhile, a buffer sponge 12 is fixedly connected to one end, penetrating out of the upper surface of the isolation plate 4, of the piston rod 5, the impact force generated when the piston rod 5 is in contact with the button switch 9 is relieved, the condition that the button switch 9 is damaged is avoided, the service life of the button switch 9 is prolonged, meanwhile, the outside of the button switch 9 is respectively connected with the two cooling fans 3 through wires, and the button switch 9 can control the opening and closing of the two cooling fans 3;

the control shell 2 is embedded with a heat conducting sheet 10 at one end in the LED driving power supply shell 1, the upper end of the heat conducting sheet 10 extends into the control shell 2, the heat conducting sheet 10 is made of silver metal sheets, the silver metal sheets have good heat conductivity, and further the temperature in the LED driving power supply shell 1 is conducted into the control shell 2 better, the outer surface of one end of the LED driving power supply shell 1 of the control shell 2 is fixedly connected with two conducting plates 11, the two conducting plates 11 are respectively and fixedly connected with the front side and the rear side of the control shell 2, the left side and the right side of each conducting plate 11 are respectively and fixedly connected with the inner walls of the left side and the right side of the LED driving power supply shell 1, an included angle of 30 degrees is formed between the conducting plates 11 and the inner wall of the bottom of the LED driving power supply shell 1, so that the two conducting plates 11 are in an inverted V shape in the LED driving power supply shell 1, and the two conducting plates 11 are positioned, the mode of the heat that the dirver circuit board launches is the form of heat radiation, and according to the principle that hot air rises simultaneously, two conduction boards 11 can be better with the produced heat gathering of dirver circuit board to the conducting strip 10 on, reduced thermal loss, two conduction boards 11 keep away from the one end of control housing 2 not with LED drive power supply shell 1's internal contact, and then avoided the produced cold air of radiator fan 3 to be isolated.

The working principle is as follows: when the over-temperature protection device of the LED driving power supply is used, when the driving circuit board in the LED driving power supply shell 1 is used for a long time, heat can be continuously generated, and then are gathered to the lower surface of the heat conductive sheet 10 through the two conductive plates 11, and the heat conductive sheet 10 transmits the heat to the inside of the control housing 2, according to the Charlie-Gallussac law, the particles in the air expand when the air is heated, the air generates a driving force to the piston block 6 in the process of expansion, and the piston block 6 drives the piston rod 5 to displace upwards, when the temperature generated by the driving circuit board is more than 60 degrees, the upper end of the piston rod 5 is contacted with the button switch 9, and then button switch 9 has controlled two radiator fan 3 respectively and has started, and then produces cold wind and blows into in LED drive power supply shell 1, and then can cool down to drive circuit board.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

The over-temperature protection device of the LED driving power supply comprises an LED driving power supply shell (1), and is characterized in that: the upper surface of the LED driving power supply shell (1) is fixedly connected with a control shell (2), the lower end of the control shell (2) penetrates into the LED driving power supply shell (1), the upper surface of the LED driving power supply shell (1) is respectively and fixedly connected with two cooling fans (3), an isolation plate (4) is fixedly connected inside the control shell (2), a piston rod (5) is movably sleeved on the isolation plate (4), a piston block (6) is fixedly connected to one end of the piston rod (5) positioned on the lower surface of the isolation plate (4), the piston block (6) is connected with the inner wall of the control shell (2) in a sliding way, a button switch (9) is arranged on the inner wall of the top of the control shell (2), the upper end of the piston rod (5) is in contact with the lower end of the button switch (9), and a heat-conducting fin (10) is embedded in the lower wall of the control shell (2).
2. The over-temperature protection device of the LED driving power supply according to claim 1, wherein: control shell (2) are located two conduction boards (11), two of the inside one end surface difference fixedly connected with of LED drive power supply shell (1) conduction board (11) fixed connection is both sides around control shell (2) respectively, the left and right sides difference fixed connection of conduction board (11) is on the left and right sides inner wall of LED drive power supply shell (1), two the one end that control shell (2) were kept away from in conduction board (11) does not with the internal contact of LED drive power supply shell (1).
3. The over-temperature protection device of the LED driving power supply according to claim 2, wherein: the bottom of conduction board (11) and LED drive power supply shell (1) between the inner wall become 30 contained angles, two conduction board (11) become the V word form that reverses in LED drive power supply shell (1), two conduction board (11) are located drive circuit board directly over.
4. The over-temperature protection device of the LED driving power supply according to claim 1, wherein: and a rubber sealing ring (7) is fixedly sleeved on the outer surface of the piston block (6).
5. The over-temperature protection device of the LED driving power supply according to claim 1, wherein: the upper surface of piston piece (6) is fixed and is connected with spring (8), the upper end fixed connection of spring (8) is at the lower surface of isolated plate (4), spring (8) activity cup joints on piston rod (5).
6. The over-temperature protection device of the LED driving power supply according to claim 1, wherein: and a buffer sponge (12) is fixedly connected to one end of the piston rod (5) penetrating out of the upper surface of the isolation plate (4).