CN201621504U - LED lighting device with soaking plate structure - Google Patents

Abstract

The utility model discloses a LED lighting device with soaking plate structure, fix a plurality of LED light sources on heat conduction base plate including lamp body and distribution, the lamp body has the vacuum cavity that forms soaking plate structure with the part of heat conduction base plate contact, be equipped with working medium in the vacuum cavity. The utility model discloses a soaking plate structure that directly takes shape on the lamp body dispels the heat to LED lighting device, and the radiating effect is good, has improved LED lighting device's stability and has prolonged its life-span.

Description

LED lighting device with vapor chamber structure

technical field

The utility model relates to an LED lighting device with a soaking plate structure.

Background technique

LED (Light Emitting Diode) has the advantages of low energy consumption, low calorific value and long service life. In today's global energy shortage, the above-mentioned environmental protection characteristics of LED have a broad application space. However, due to the lack of luminance of a single LED, LED lighting devices generally adopt the structure of an LED array, which will cause heat concentration and local temperature of the LED lighting device to be too high, which will cause instability of the circuit control system, excessive energy consumption, and lamps and lanterns. problems such as reduced lifespan. In order to make the LED lighting device work stably and for a long time, solving the heat dissipation problem of the LED lighting device has become the key to the application of high-brightness LEDs.

Contents of the invention

The purpose of the utility model is to provide an LED lighting device with a vapor chamber structure, which has good heat dissipation performance, can conduct and dissipate the concentrated heat of the LED light source, improves the stability of the LED lighting device and prolongs its working life. life.

The technical solution of the utility model is: an LED lighting device with a vapor chamber structure, including a lamp housing and a plurality of LED light sources distributed and fixed on the heat conduction substrate, the part of the lamp housing in contact with the heat conduction substrate has a The structure of the vacuum chamber, the vacuum chamber is provided with a working medium. Wherein, the heat conduction substrate may be provided with a heat conduction area on its back side in contact with the vapor chamber structure, or the entire heat conduction substrate may be made of heat conduction material.

The vapor chamber structure of the utility model is directly formed on the lamp housing, so that after the heat conduction substrate transfers the heat from the LED light source to the lamp housing, it can be dissipated quickly through the vapor chamber structure. The working medium in the vacuum chamber changes from a liquid state to the evaporation end close to the heat-conducting substrate and evaporates into a gas after being heated, so that the temperature of this side drops, and then when the working medium gas encounters the cooler wall of the condensing end chamber away from the heat-conducting substrate, When it is cold, it releases heat and condenses into a liquid. The released heat is conducted to the outside of the lamp housing through the cavity wall on this side and dissipated.

Further, in the above-mentioned LED lighting device with a vapor chamber structure, the part of the lamp housing forming the vapor chamber structure includes a vapor chamber cover and a heat dissipation base, and the vapor chamber cover is arranged close to the heat conducting substrate, so that The heat dissipation base is located on the side of the heat vapor chamber cover facing away from the heat conduction substrate, and the vacuum chamber is formed between the heat vapor chamber cover and the heat dissipation base. When working, the working medium in the vacuum chamber absorbs heat and evaporates on the cover side of the soaking plate from a liquid state, and the evaporated gas releases heat and condenses on the heat dissipation base side.

Further, in the above-mentioned LED lighting device with a vapor chamber structure, a plurality of heat dissipation fins are provided on the outer side of the heat dissipation base facing away from the chamber cover. The heat dissipation area of the heat dissipation base and the air convection heat dissipation is increased, and the heat dissipation effect is improved.

Further, in the above-mentioned LED lighting device with a vapor chamber structure, the inner wall of the vacuum chamber has a capillary structure. The capillary structure can firstly provide a channel for the liquid at the condensing end to flow back to the evaporating end, secondly, provide a channel for heat conduction between the inner wall of the vacuum chamber and the working medium in the liquid/gas state, and thirdly, provide the pores necessary for the liquid gas to generate capillary pressure.

When processing the vapor chamber structure, firstly, the inner wall of the vacuum cavity is formed by sintering or using a metal structure on the vapor chamber cover and the heat dissipation base, and then the vapor chamber cover and the heat dissipation base cover are combined and sealed. The working medium is fluid and vacuumized, so that the vapor chamber cover and the heat dissipation base form a vapor chamber structure.

The utility model advantage is:

1. The utility model adopts a vapor chamber structure to dissipate heat from the LED lighting device, which has a good heat dissipation effect, improves the stability of the LED lighting device and prolongs its life.

2. The utility model processes and shapes the vapor chamber structure directly on the lamp housing of the LED lighting device, and provides a good heat dissipation effect with a simplified structure.

Description of drawings

Fig. 1 is the structural representation of the specific embodiment of the utility model;

Fig. 2 is the exploded structure schematic diagram of the specific embodiment of the utility model;

Fig. 3 is A-A sectional view of Fig. 1;

FIG. 4 is a partially enlarged schematic diagram of a position I in FIG. 3 .

Among them: 1 lamp housing; 11 vapor chamber structure; 111 vapor chamber cover; 112 heat dissipation base; 1121 heat dissipation fins; 113 vacuum cavity; 114 capillary structure;

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment: As shown in Figures 1 to 4, an LED lighting device with a vapor chamber structure includes a lamp housing 1 and a number of LED light sources 3 distributed and fixed on a heat-conducting substrate 2, the lamp housing 1 and the heat-conducting substrate The part in contact with 2 has a vacuum chamber 113 forming the vapor chamber structure 11, and the vacuum chamber 113 is provided with a working medium.

The part of the lamp housing 1 forming the vapor chamber structure 11 includes a vapor chamber cover 111 and a heat dissipation base 112, the vapor chamber cover 111 is arranged close to the heat conducting substrate 2, and the heat dissipation base 112 is located on the vapor chamber cover 111 is on the side facing away from the heat conducting substrate 2 , and the vacuum chamber 113 is formed between the vapor chamber cover 111 and the heat dissipation base 112 .

The outer side of the heat dissipation base 112 facing away from the vapor chamber cover 111 is provided with a plurality of heat dissipation fins 1121 .

The inner wall of the vacuum chamber 113 has a capillary structure 114 .

The utility model adopts the soaking plate structure directly formed on the lamp shell to dissipate heat from the LED lighting device, has good heat dissipation effect, improves the stability of the LED lighting device and prolongs its service life.

Claims (4)

1. LED lighting device with soaking plate structure, comprise that lamp housing (1) and distribution are fixed on the some led light sources (3) on the heat-conducting substrate (2), it is characterized in that: the part that described lamp housing (1) contacts with heat-conducting substrate (2) has the vacuum chamber (113) that forms soaking plate structure (11), and described vacuum chamber is provided with working media in (113).

2. the LED lighting device with soaking plate structure according to claim 1, it is characterized in that: the part that described lamp housing (1) forms soaking plate structure (11) comprises soaking plate loam cake (111) and heat dissipation base (112), described soaking plate loam cake (111) is pressed close to heat-conducting substrate (2) setting, described heat dissipation base (112) is positioned at soaking plate loam cake (a 111) side of heat-conducting substrate (2) dorsad, and described vacuum chamber (113) is formed between soaking plate loam cake (111) and the heat dissipation base (112).

3. the LED lighting device with soaking plate structure according to claim 2 is characterized in that: described heat dissipation base (112) outside of soaking plate loam cake (111) dorsad is provided with some radiating fins (1121).

4. the LED lighting device with soaking plate structure according to claim 1 is characterized in that: described vacuum chamber (113) inwall has capillary structure (114).

Images