CN209762991U

CN209762991U - heat radiation structure of LED bulb

Info

Publication number: CN209762991U
Application number: CN201920678914.1U
Authority: CN
Inventors: 房磊
Original assignee: Changzhou Shenglei Photoelectric Technology Co Ltd
Current assignee: Changzhou Shenglei Photoelectric Technology Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2019-12-10
Anticipated expiration: 2029-05-13

Abstract

The utility model provides a heat radiation structure of LED bulb, includes the lamp holder, installs the support on the lamp holder, attached circuit board on the support, and the LED of welding on the circuit board is installed and is wrapped up on the lamp holder the transparent cover of support, a plurality of clearances are cut out at the interval that LED was arranged to the circuit board, the support outside is provided with a plurality of protruding muscle of dispelling the heat, when the circuit board is attached on the support, the protruding muscle of dispelling the heat is followed wear out in the clearance. The utility model discloses effectively utilize LED to arrange the interval and set up the protruding muscle of heat dissipation, increased heat radiating area, can not lead to the bulb volume increase again, simultaneously because the protruding muscle of heat dissipation is closer apart from LED, shortened heat-conduction distance, the radiating effect is better. Adopt the utility model discloses can be with the temperature control in the LED bulb below 60, show extension LED's life-span.

Description

Heat radiation structure of LED bulb

Technical Field

the utility model relates to an illumination lamps and lanterns especially relate to a heat radiation structure of LED bulb.

Background

Referring to fig. 1, the conventional LED bulb structure includes a lamp cap 01, a bracket 02 mounted on the lamp cap 01, and an LED04 welded on a flexible circuit board 03, wherein the flexible circuit board 03 is attached to the bracket 02, and is mounted on the lamp cap 01 and wrapped by a transparent lampshade 05 of the bracket 02. Because the circuit board wraps the bracket as a whole, the heat dissipation of the LED is not facilitated, the size of the lamp holder 01 needs to be increased or the heat dissipation area needs to be increased by arranging the heat dissipation fins on the lamp holder 01, and thus the size of the LED is increased. In some special application occasions such as a ceiling lamp, the bulb is required to be small in size due to limitation of modeling, meanwhile, the required brightness is high, the LED power is high, when the conventional LED bulb is applied to the field, the temperature in the bulb is often as high as 85-90 ℃, the temperature far exceeds the design temperature of an LED chip, and the service life of the LED is rapidly reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a LED bulb with good heat dissipation and low cost.

the utility model provides a technical means that its technical problem adopted is: the utility model provides a heat radiation structure of LED bulb, includes the lamp holder, installs the support on the lamp holder, attached circuit board on the support, and the LED of welding on the circuit board is installed and is wrapped up on the lamp holder the transparent cover of support, a plurality of clearances are cut out at the interval that LED was arranged to the circuit board, the support outside is provided with a plurality of protruding muscle of dispelling the heat, when the circuit board is attached on the support, the protruding muscle of dispelling the heat is followed wear out in the clearance.

The utility model has the advantages that: because the circuit board is provided with gaps at intervals of the LED arrangement, the heat dissipation convex ribs are arranged outside the support, and when the circuit board is attached to the support, the ribs penetrate out of the gaps. The LED is effectively utilized to arrange the interval and set up the protruding muscle of heat dissipation, has increased heat radiating area, can not lead to the bulb volume increase again, simultaneously because the protruding muscle of heat dissipation is closer than LED, has shortened heat-conduction distance, and the radiating effect is better. Adopt the utility model discloses can be with the temperature control in the LED bulb below 60, show extension LED's life-span.

Drawings

FIG. 1 is a diagram of a conventional LED bulb;

FIG. 2 is a schematic view of the assembly of the present invention;

Fig. 3 is an assembly diagram of the bracket and the lampshade of the present invention after being assembled;

Fig. 4 is a schematic diagram of the arrangement of the LEDs on the circuit board according to the present invention;

Fig. 5 is a schematic structural view of the lampshade of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Referring to fig. 2 and 3, the heat dissipation structure of the LED bulb includes a lamp cap 1, a cylindrical limiting convex rib 11 is arranged in the lamp cap 1, and a barb 12 is arranged on the limiting convex rib 11. Referring to fig. 2, a heat conducting support 2 for supporting the LED, the support 2 is a hollow cylinder structure, and a plurality of vertically extending heat dissipating ribs 21 are disposed on the surface of the support 2. Referring to fig. 4, the LEDs 4 are soldered on the flexible circuit board 3 in a matrix arrangement. The upper part of the circuit board 3 leaves part of the connection strip 31 to pass through the circuit, and the lower part of the circuit board 3 is partially cut away between the vertical spaces of the LEDs 4 to form a plurality of vertical gaps 32. Referring to fig. 5, the lamp housing 5 is wrapped around the holder 1, and the lamp housing 5 has a hollow structure with a lower opening 52 assembled with the lamp cap 1 and a top opening 51 for heat dissipation. The inner wall of the lower opening 52 is provided with a groove 53, and the wall of the lampshade 5 is provided with a plurality of long holes 54 corresponding to the positions of the heat dissipation convex ribs 21 on the surface of the bracket 2.

The utility model discloses the equipment process is: referring to fig. 2 and 3, the flexible circuit board 3 with the LED4 soldered thereon is attached to the surface of the bracket 2, the heat dissipation ribs 21 penetrate through the gap 32, the bracket 2 is then inserted into the lampshade 5, and the heat dissipation ribs 21 on the surface of the bracket 2 penetrate through the long holes 54 of the lampshade 5; then the lower opening 52 of the lampshade 5 is sleeved outside the limiting rib 11 of the lamp holder 1, the barb 12 on the lamp holder 1 is clamped into the groove 53 on the inner wall of the lower opening 52 of the lampshade 5 to fix the two, and finally the upper opening 51 of the lampshade 5 is covered with the decorative cover 6.

The utility model discloses because circuit board 3 is provided with clearance 32 at the interval that LED4 arranged, support 2 outside is provided with the protruding muscle 21 of heat dissipation, circuit board 3 is when attached on support 2, the protruding muscle 21 of heat dissipation is followed wear out in the clearance 32. Like this, effectively utilize the LED to arrange the interval and set up heat dissipation protruding muscle 21, increased heat radiating area, can not lead to the bulb volume increase again, simultaneously because heat dissipation protruding muscle 21 is closer apart from the LED, shortened heat-conduction distance, the radiating effect is better. Adopt the utility model discloses can be with the temperature control in the LED bulb below 60, show extension LED's life-span. The gap 32, the heat dissipation convex rib 21 and the long hole 54 can also be transversely arranged, but the heat dissipation convex rib 21 is vertically extended, so that the characteristic that the vertical size of the LED bulb is larger than the transverse size is further utilized, the heat dissipation area is optimized to be the largest, and the heat dissipation effect is better.

The above description of the specific embodiments is only the preferred embodiments of the present invention, and does not represent the limitation of the protection contents of the present invention, and any technical solutions that can be obtained by normal reasoning of the ordinary technicians in the spirit of the present invention are the protection scope of the present invention.

Claims

1. The utility model provides a heat radiation structure of LED bulb, includes the lamp holder, installs the support on the lamp holder, attached circuit board on the support, and the LED of welding on the circuit board installs the parcel on the lamp holder the transparent cover of support, its characterized in that: the LED lamp comprises a circuit board and is characterized in that a plurality of gaps are cut at intervals of the LED arrangement of the circuit board, a plurality of radiating convex ribs are arranged outside a support, and when the circuit board is attached to the support, the radiating convex ribs penetrate out of the gaps.

2. The heat dissipation structure of the LED bulb according to claim 1, wherein: the lamp shade is provided with a plurality of long holes corresponding to the heat dissipation convex ribs, and the heat dissipation convex ribs penetrate out of the long holes.

3. The heat dissipation structure of the LED bulb according to claim 2, wherein: partial connecting bands are reserved on the upper portion of the circuit board, parts of the LED vertical intervals on the lower portion of the circuit board are cut off to form a plurality of vertical gaps, and the radiating convex ribs outside the support and the long holes in the lampshade are correspondingly arranged to extend vertically.