CN220321243U - Light source with good heat dissipation - Google Patents

Abstract

The utility model discloses a light source with good heat dissipation, which comprises a shell, wherein a plurality of vent holes are formed in the side wall of the shell, a reflector is arranged at the open end of the shell, an LED chip is arranged in the reflector, a driving module is integrated on the LED chip, the driving module is arranged in the shell, a first heat-conducting pipe is arranged on the surface of the driving module, one side of the shell, which is opposite to the reflector, is connected with a heat dissipation component, the heat dissipation component comprises a venturi tube, the venturi tube comprises a shrinkage tube, a throat tube and an expansion tube, which are sequentially connected, a fan is arranged at the air inlet end of the shrinkage tube, a second heat-conducting pipe connected with the first heat-conducting pipe end to end is arranged in the expansion tube, and heat-conducting liquid is filled in the second heat-conducting pipe. According to the scheme, the air cooling is realized by changing the flow speed and the pressure of the air by utilizing the fluid dynamics principle, and compared with a traditional passive heat dissipation mode of the heat dissipation fins, the passive heat dissipation mode of the heat dissipation fins is remarkably improved.

Description

Light source with good heat dissipation

Technical Field

The utility model relates to a light source, in particular to a light source with good heat dissipation.

Background

The light source is widely installed at each corner of the workshop as a lighting device in the workshop. The existing light source generally adopts an energy-saving and efficient LED light source, but the LED light source has a problem that a large amount of heat can be emitted by the LED light source, and the service life of the LED light source is influenced. The existing heat dissipation mode of the LED light source is still on the basis of simply using the heat dissipation fins to conduct heat dissipation, the heat dissipation means is single, the heat dissipation effect is more general, the power of the LED light source is limited, the LED light source is easy to damage and needs to be replaced, and the LED light source is very troublesome.

Disclosure of Invention

The utility model aims to provide a light source with good heat dissipation, so as to solve the problems of single heat dissipation means and unsatisfactory heat dissipation effect of the traditional LED light source.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a radiating light source, includes the casing, set up a plurality of ventilation holes on the lateral wall of casing, install the reflector on the open end of casing, set up the LED chip in the reflector, integrated drive module group on the LED chip, drive module group sets up in the casing, drive module group's surface sets up first heat pipe, the radiator unit is connected to one side of casing dorsad reflector, radiator unit includes venturi, venturi includes shrink tube, venturi and expansion pipe that connect in proper order, the inlet end of shrink tube sets up the fan, set up the second heat pipe with first heat pipe end to end in the expansion pipe, be filled with the heat conduction liquid in the second heat pipe.

Preferably, the first heat conducting pipe is arranged on the surface of the driving module in an S shape.

Preferably, the second heat conduction pipe is arranged in an S shape in the expansion pipe.

Preferably, the venturi tube is flat.

Preferably, the throat pipe is provided with an air suction pipe, and the air suction pipe is communicated with the shell.

Preferably, the upper cover of the reflecting cover is provided with a transparent end plate.

Compared with the prior art, the utility model has the beneficial effects that: 1. compared with the direct blowing of the fan, after the air sent by the fan is acted by the Venturi tube, the expansion occurs in the expansion tube, so that the temperature of the air in the expansion tube can be reduced due to expansion of the air, namely, the temperature is lower than the ambient temperature, and the cooling effect of the air is further improved. Meanwhile, the second heat conduction pipe arranged in the expansion pipe is communicated with the first heat conduction pipe on the surface of the driving module, heat conduction is realized through the heat conduction liquid filled in the second heat conduction pipe, and the heat conduction liquid absorbs the heat emitted by the driving module in the first heat conduction pipe, enters the second heat conduction pipe and realizes more efficient heat dissipation in the expansion pipe. 2. The first heat conduction pipe and the second heat conduction pipe are both arranged to be S-shaped mechanisms, so that the contact area is increased, and the heat dissipation effect is improved. 3. The venturi tube is arranged to be flat, so that the occupied space of the venturi tube is reduced, and the heat dissipation assembly is convenient to connect with the shell. 4. The air suction pipe is arranged at the throat pipe, so that air in the shell is sucked into the venturi pipe through the air suction pipe due to the principle of the venturi pipe, the circulation of the air in the shell is increased, and the heat dissipation efficiency is further improved. 5. The heat dissipation fins are added on the surface of the driving module, so that the heat dissipation efficiency can be further improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is an exploded view of the present utility model in one state;

FIG. 3 is an exploded view of the present utility model in another state;

FIG. 4 is a cross-sectional view of the present utility model;

fig. 5 is a cross-sectional view of a heat dissipating assembly.

Reference numerals: 100. transparent end plate 200, reflector 300, housing 310, vent 400, heat sink assembly 410, venturi 411, shrink tube 412, throat 413, expansion tube 414, suction tube 420, fan 430, second heat pipe 500, LED chip 600, drive module 610, heat sink fin 700, and first heat pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

A well-cooled light source as shown in fig. 1-5 includes a housing 300 having an open end with a horn-shaped reflector 200 mounted thereon, with a transparent end plate mounted at the end of the reflector to enclose the reflector. In addition, a piece of LED chip 500 is mounted in the reflector, which separates the space in the reflector from the space in the housing. Meanwhile, a driving module 600 electrically connected to the LED chip is further integrated on the back surface of the LED chip, and the driving module provides a stable voltage to the LED chip and drives the LED chip to emit light. As shown in fig. 3, a first heat pipe 700 is disposed on the surface of the driving module in a bonding manner.

In addition, a heat dissipation component 400 is fixedly connected to the outer surface of the shell facing away from the reflector. Specifically, the heat dissipation assembly includes a venturi 410 having a constriction 411, a throat 412 and a diverging tube 413 connected in sequence, wherein a fan 420 is installed on an air inlet end of the constriction so as to continuously pump air into the venturi by rotation of the fan.

A Venturi (Venturi) tube is a device that uses the principle of fluid dynamics to achieve air cooling. The principle is based on bernoulli's law and continuity equation.

Bernoulli's law states that in a steady fluid, the pressure decreases as the velocity increases. The continuity equation illustrates that in a pipeline, as the fluid velocity increases, the flow necessarily decreases.

The venturi tube is composed of a shrink tube and an expansion tube. As the air passes through the shrink tube, the flow rate increases due to the decreasing tube diameter, and the pressure decreases. Then air enters the expansion pipe, the pipe diameter gradually increases, the flow speed is reduced, the air pressure is increased at the moment, and the temperature of the air is reduced after the air is rapidly expanded and diffused. The temperature of the cooled air is lower than that of the original room temperature air flow, and the cooled air is used for cooling, so that the cooling effect is obviously better than that of the fan directly blowing the surface of the driving module.

In order to fully utilize the cooling effect of the cooling air, a second heat-conducting pipe 430 is further arranged in the expansion pipe, two ends of the second heat-conducting pipe are circularly connected with the first heat-conducting pipe through a hose, heat-conducting liquid is filled in the second heat-conducting pipe, and the heat-conducting liquid circulates in the first heat-conducting pipe and the second heat-conducting pipe so as to realize rapid heat dissipation of the driving module.

It should be noted that, in order to increase the contact area between the first heat pipe 700 and the driving module, and further improve the heat exchange efficiency, the surface of the driving module is S-shaped.

Similarly, to increase the contact area of the second conduit with the cooler air of the expansion tube, the second heat conductive tube 430 disposed in the expansion tube 413 is also disposed in an S-shape.

In addition, in order to facilitate the connection of the venturi tube and the shell, and reduce the space volume occupied by the venturi tube as much as possible, the venturi tube is arranged in a flat shape.

In addition, an air suction pipe 414 is provided at the throat of the venturi tube, and one end of the air suction pipe is connected to the housing 300 and is connected to the housing. It should be noted that, when the air passes through the venturi, the flow speed is increased, and according to bernoulli's law, the air pressure at the venturi is reduced, and then the air in the housing is sucked into the venturi through the air suction pipe 414, and as the air in the housing is sucked away, the fluidity of the air in the housing is enhanced, and the heat exchange efficiency with the surface of the driving module is also improved, so that the heat dissipation effect of the scheme is further improved.

In addition, in order to increase the heat dissipation area, a plurality of heat dissipation fins 610 are uniformly distributed on the surface of the driving module.

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

Claims (6)

1. The utility model provides a light source that heat dissipation is good which characterized in that: including casing (300), set up a plurality of ventilation holes (310) on the lateral wall of casing (300), install reflector (200) on the open end of casing (300), transparent end plate (100) are established to reflector (200) upper cover, set up LED chip (500) in reflector (200), integrated drive module (600) on LED chip (500), drive module (600) set up in casing (300), the surface of drive module (600) sets up first heat pipe (700), radiator unit (400) are connected to one side of casing (300) dorsad, radiator unit (400) include venturi (410), venturi (410) are including shrink tube (411), venturi (412) and expansion pipe (413) that connect in proper order, the inlet end of shrink tube (411) sets up fan (420), set up in expansion pipe (413) with first heat pipe (700) end to end second heat pipe (430), fill in second heat pipe (430) and have heat conduction liquid.

2. A well-cooled light source according to claim 1, wherein: the first heat conduction pipe (700) is arranged on the surface of the driving module (600) in an S-shaped mode.

3. A well-cooled light source according to claim 1, wherein: the second heat conduction pipe (430) is arranged in an S shape in the expansion pipe (413).

4. A well-cooled light source according to claim 1, wherein: the venturi tube (410) is flat.

5. A well-cooled light source according to claim 1, wherein: the throat pipe (412) is provided with an air suction pipe (414), and the air suction pipe (414) is communicated with the shell (300).

6. A well-cooled light source according to claim 1, wherein: radiating fins (610) are also uniformly distributed on the surface of the driving module (600).