CN101699136A - LED lamp - Google Patents

Abstract

The invention discloses an LED lamp, which comprises an LED chip, a base and a shell, wherein the base is connected to the bottom of the shell, the shell comprises a metal bearing substrate, the LED chip is arranged on the metal bearing substrate, a plurality of metal radiating fins which radiate outwards are arranged on the periphery of the metal bearing substrate, a shell cavity is formed on the inner side of each metal radiating fin, and a reflecting cup body for light source to radiate outwards is arranged on the shell cavity. The lamp edge of the invention uses the limited volume of the traditional halogen tungsten lamp, the reasonable distribution is made on the heat dissipation structure, the heat dissipation area is doubled, the lamp has better heat dissipation effect, the appearance is more unique, the LED chip is used for replacing the traditional light source, the luminous effect is ensured, the energy can be effectively saved, and the invention is an ideal substitute of the traditional halogen tungsten lamp.

Description

A kind of LED light

technical field

The invention relates to a lighting fixture, in particular to an LED lamp.

Background technique

The traditional aluminum halogen spotlight includes a base and a metal shell. The inner surface of the metal shell is designed as a parabolic surface, and its outer surface is also a smooth spherical surface. The base is installed on the outer surface of the metal shell, and the metal shell is equipped with a Silk. This kind of spotlight uses the principle of tungsten halogen circulation to make the halide in the filling gas in the shell in a gaseous state, so the internal temperature of the shell is relatively high, and accordingly, the size of the lamp shell is small. The structural design of this tungsten-halogen lamp is unreasonable. Due to the small size of the lamp cup, the heat in the shell cannot be dissipated, which reduces the service life of the spotlight, and its appearance and structure appear monotonous. In addition, the traditional filament heating method is adopted. As a result, the power consumption of the lamps is relatively large, which is easy to cause waste of energy.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide an LED lamp with high energy saving and high heat dissipation effect.

The technical scheme that the present invention adopts for solving the problems of the technologies described above is:

An LED lamp includes an LED chip, a base and a housing, the base is connected to the bottom of the housing, the housing includes a metal supporting substrate, the LED chip is mounted on the metal supporting substrate, and the metal supporting substrate The periphery of the supporting substrate is provided with several metal cooling fins radiating outwards, the inner side of the metal cooling fins forms a housing cavity, and the housing cavity is provided with a reflective cup body for the light source to radiate outward.

As a further improvement of the above solution, the metal heat sink and the metal supporting substrate are integrally formed.

The beneficial effects of the present invention are: LED chips are used instead of traditional filaments to emit light, and low-power LED chips can be used in a limited-volume lamp cup to make the spotlights have a good luminous effect, which not only saves energy, but also is environmentally friendly and can prolong the life of the lamp. The service life of the LED lamp; the setting of the metal heat sink keeps the volume of the lamp cup unchanged, but increases the heat dissipation area of the lamp cup, so that it has a good heat dissipation effect, and the external structure is relatively neat; the reflective cup body can further improve the LED The luminous effect of the lamp; in addition, the integral molding of the metal supporting substrate and the metal heat sink during processing can effectively make the heat emitted by the LED chip conduct to the heat sink through the metal supporting substrate, so that the heat can be better dissipated.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a sectional view of the present invention;

Fig. 2 is an exploded schematic view of the present invention.

Detailed ways

1 and 2, the LED lamp of the present invention includes an LED chip 1, a base 2 and a housing 3, the base 2 is connected to the bottom of the housing 3, and the housing 3 includes a metal supporting substrate 30. The LED chip 1 is installed on the metal supporting substrate 30, the periphery of the metal supporting substrate 30 is provided with several metal heat sinks 5 radiating outward, and the inner side of the metal heat sink 5 is formed with a housing cavity 50, The housing cavity 50 is provided with a reflective cup body 6 for the light source to irradiate outside. This kind of LED lamp changes the traditional tungsten halogen lamp light source, and installs the integrated LED chip 1 on the metal supporting substrate 30 in the housing 3, so that the LED with a power of only 10W can replace the traditional light source of 75W, and has the same luminous effect. effect, the energy-saving effect is remarkable; the setting of the metal heat sink 5 increases the contact area between the shell 3 and the air, which is beneficial to heat dissipation and can prolong the service life of the lamp, and the appearance is relatively unique, which overcomes the disadvantage of the single shape of the traditional lamp. The reflective cup body 6 installed on the body cavity 50 can further improve the illumination effect of the LED lamp. Experimental results prove that during the use of the LED lamp of the present invention, even at an ambient temperature of 40°C, the temperature of the lamp cup does not exceed 60°C, and the heat generated by the LED chip 1 can be dissipated immediately, which has a good heat dissipation effect. The service life of the LED lamp is improved.

Further, the metal heat sink 5 and the metal supporting substrate 30 are integrally formed. This design follows the limited volume of the traditional tungsten-halogen lamp. During processing, the metal heat sink 5 can be integrally formed on the metal supporting substrate 30, which not only simplifies the processing technology, but also makes a reasonable distribution in the heat dissipation structure. The metal supporting substrate 30 can effectively conduct the heat emitted by the LED chip 1 to the metal heat sink 5, and the metal heat sink 5 doubles the heat dissipation area of the housing 3, thereby increasing the contact area between the housing 3 and the air, making it have Better cooling effect.

Further, a metal bottom ring 4 extends downward from the metal supporting substrate 30 and the metal cooling fin 5 . The arrangement of the metal bottom ring 4 can further increase the heat dissipation area of the casing 3 .

Further, the base 2 is sleeved on the inner side of the metal bottom ring 4 . The base 2 is installed on the inner side of the metal bottom ring 4, so that the metal bottom ring 4 is in contact with the outside air, which is beneficial to transfer heat to the outside air, thereby achieving a better heat dissipation effect.

As a preferred embodiment, the reflective cup body 6 is a reflective cover sleeved on the inner side of the metal heat sink 5 . At the same time, the reflective cup body 6 can also be formed by sealing the inside of the metal heat sink 5 during processing to form a cup wall, and then coating the inner wall of the cup wall with reflective paint.

A driving circuit board 20 is installed in the base 2 , and the driving circuit board 20 is electrically connected with the LED chip 1 . Driving the LED chip 1 with a constant current can not only maintain the brightness of the LED chip 1, but also protect the LED lamp to prolong its service life; in addition, the structure of the integrated design of the driver and the LED lamp makes the appearance of the entire LED lamp smooth, Overall more beautiful.

Further, the reflector is clamped on the metal heat sink 5 through the inwardly recessed engaging portion 7 at the top of the metal heat sink 5 . The reflector 6 is used to concentrate the light, which can reduce light loss more effectively and improve the luminous effect of the LED lamp. The structure that the reflector 6 is engaged with the top of the metal heat sink 5 enables the shell 3 and the reflector to be effectively combined. As a whole, the connection is more firm, and it is also easy to disassemble.

In addition, the ceramic fixing base 8 can be used to fix the LED chip 1 on the metal supporting substrate 30 . Utilizing the properties of ceramics such as high temperature resistance, corrosion resistance and wear resistance, the LED chip 1 can be better fixed in the casing, and the installation and replacement of the LED chip 1 becomes more convenient. In addition, the bottom of the screw base 2 can also be used to fix the terminal 22, through which the LED lamp can be flexibly installed in various equipment and places, thereby effectively expanding the application range of the present invention.

In a word, the appearance and volume of the LED lamp of the present invention are very similar to the traditional tungsten halogen lamp, and the use of a lower power LED instead of the traditional light source can have the same luminous effect, the energy saving effect is remarkable, and it has a good heat dissipation effect. Ideal replacement for light sources.

The present invention is not limited to the above-mentioned embodiments, as long as they achieve the technical effect of the present invention by basically the same means, they should all belong to the protection scope of the present invention.

Claims (7)

1. LED lamp, comprise led chip (1), pedestal (2) and housing (3), described pedestal (2) is connected the bottom of housing (3), it is characterized in that: described housing (3) includes metal support substrate (30), led chip (1) is installed on the metal support substrate (30), oriented extraradial several metal fins of the outer periphery of described metal support substrate (30) (5), the inboard of metal fin (5) is formed with housing cavity (50), and housing cavity (50) is provided with for the reflective cup (6) of light source toward external exposure.

2. LED lamp according to claim 1 is characterized in that: described metal fin (5) is integrated with metal support substrate (30).

3. LED lamp according to claim 1 is characterized in that: described metal support substrate (30) is extended with metal base ring (4) downwards with metal fin (5).

4. LED lamp according to claim 2 is characterized in that: the inboard of described pedestal (2) socket metal base ring (4).

5. LED lamp according to claim 1 is characterized in that: described reflective cup (6) is for being socketed in the inboard reflection shield of metal fin (5).

6. LED lamp according to claim 1 is characterized in that: driver circuit plate (20) is installed in the described pedestal (2), and described driver circuit plate (20) is electrically connected with led chip (1).

7. LED lamp according to claim 5 is characterized in that: described reflection shield is connected on the described metal fin (5) by the engaging position (7) that described metal fin (5) top caves inward.

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