CN202349666U

CN202349666U - LED (light emitting diode) lamp with good heat radiating performance

Info

Publication number: CN202349666U
Application number: CN2011204761978U
Authority: CN
Inventors: 沈锦祥; 沈晖; 陈方
Original assignee: Sengled Optoelectronics Co Ltd
Current assignee: Sengled Optoelectronics Co Ltd
Priority date: 2011-11-25
Filing date: 2011-11-25
Publication date: 2012-07-25
Anticipated expiration: 2021-11-25

Abstract

The utility model discloses an LED (light emitting diode) lamp with good heat radiating performance. The LED lamp comprises a heat radiating lamp cup and an LED light emitting assembly, wherein the heat radiating lamp cup comprises a lamp cup body; a plurality of heat radiating fins are distributed circumferentially on the periphery of the lamp cup body; an outer cover is wrapped outside the heat radiating fins; and two openings are arranged between the upper end of the outer cover and the lamp cup body and between the lower end of the outer cover and the lamp cup body respectively. According to the LED lamp with good heat radiating performance, a layer of outer cover is wrapped outside the heat radiating fins, so that the radiation area of the lamp cup is increased, and through holes formed among the inner wall of the outer cover and the fins can form an air flow channel, therefore, air convection is enhanced so as to dissipate heat produced by an LED light source. The heat radiating effect of the LED lamp is improved, so as to obtain the unexpected effect.

Description

A kind of LED lamp with excellent heat dispersion performance

Technical field

The utility model relates to the LED lighting technical field, particularly a kind of LED lamp with excellent heat dispersion performance.

Background technology

The structure of common LED lamp comprises the heat radiation Lamp cup substantially; In the heat radiation Lamp cup, be arranged with the LED driving power; Be provided with the LED luminescence component at heat radiation Lamp cup front end, the characteristics of this fitting structure are that the heat radiation Lamp cup is exposed to the outside, be shell be again radiator; It typically is aluminium and process, there is the hidden danger that scratches, scalds staff in the outer radiating fin of heat radiation Lamp cup; And the swept area of heat radiation Lamp cup is little, cross-ventilation cooling effect that can't formation rule.

The utility model content

The utility model is to the deficiency that exists in the above-mentioned prior art; A kind of LED lamp with excellent heat dispersion performance is provided, this LED lamp be on the basis that has kept radiating fin in heat radiation Lamp cup outerwrap one deck outer cover, both increased the swept area of Lamp cup; Make again and formed a plurality of heat dissipation channels between outer cover and radiating fin; Form stack effect, strengthened cross-ventilation, improved radiating effect.

The technical scheme of the utility model is achieved in that

A kind of LED lamp with excellent heat dispersion performance; Comprise heat radiation Lamp cup, LED luminescence component; Described heat radiation Lamp cup comprises the Lamp cup body; Periphery upper edge at the Lamp cup body circumferentially is distributed with a plurality of radiating fins, is wrapped with outer cover at radiating fin, all leaves a circle opening between the two ends up and down of outer cover and Lamp cup body.

The general simple stripe shape radiating fin that adopts of traditional die casting or extruded material heat radiation Lamp cup, such structure, it is long-pending that the heat radiation effective area is not equal to actual external surface, and have only actual external surface long-pending about 70%.And the utility model under the regulatory specifications volume except the situation that keeps radiating fin under, one deck outer cover has been wrapped up in the outside more; Both increased the effective radiating area of radiator, and also utilized the heat radiation Lamp cup more fully, strengthened the convection current of air by the through hole between outer cover inwall and the fin formed " chimney " effect.Be equivalent to strengthen respectively heat loss through radiation and Natural Heat Convection.Better effect is played in heat radiation for LED; Better life-span of LED and light efficiency have been guaranteed.

For easy to process, as preferably, described outer cover is to be connected to form by upper outlet body and lower cover two parts.

For easy to assembly, as preferably, form at least two snapping portions on the radiating fin of described upper outlet body below, correspondence forms at least two buckling parts on the inwall of described lower cover, and the buckling parts of described lower cover links to each other with snapping portion.

As preferably, described upper outlet body is an aluminium alloy one die cast with the heat radiation Lamp cup, and described lower cover is that plastic material is processed.

Adopted the design philosophy and the beneficial effect of the utility model of technique scheme to be:

The utility model has not only increased the swept area of Lamp cup at radiating fin coated outside one deck outer cover, and the through hole that forms between outer cover inwall and the fin can form air flow channel, and the convection current of having strengthened air is dispelled the heat with the heat that led light source is produced.Improve the radiating effect of LED lamp, played beyond thought effect.

Description of drawings

Fig. 1 is the explosive view of LED lamp among the utility model embodiment;

Fig. 2 is the explosive view of LED lamp other direction among the utility model embodiment;

Fig. 3 is the perspective view of LED lamp among the utility model embodiment;

Fig. 4 is the A-A cutaway view of Fig. 3;

Fig. 5 is the A portion enlarged drawing of Fig. 1;

Fig. 6 is the B portion enlarged drawing of Fig. 1;

Fig. 7 is the A portion enlarged drawing of Fig. 4;

Fig. 8 is the perspective view of LED lamp other direction among the embodiment;

Fig. 9 is the structural representation of LED lamp among the embodiment;

Figure 10 looks up the structural representation of direction for Fig. 9;

Figure 11 overlooks the structural representation of direction for Fig. 9;

Figure 12 is the radiating effect sketch map of LED lamp among the embodiment.

The specific embodiment

The specific embodiment of the utility model is following:

Embodiment 1: a kind of LED lamp of present embodiment; Shown in Fig. 1～12, comprise heat radiation Lamp cup 1, driving power housing 2, described heat radiation Lamp cup 1 inside is hollow structure; Be provided with pedestal 3 in the heat radiation Lamp cup 1; Pedestal 3 Lamp cup 1 that will dispel the heat is divided into LED luminescence component container cavity 4 and driving power container cavity 5, circumferentially convexes with in the inwall upper edge of driving power container cavity 5 driving power housing 2 is carried out spacing convex tendon 6, and driving power housing 2 is plugged in the driving power container cavity 5; As shown in Figure 4, because of making, the existence of convex tendon 6 leaves a plurality of spaces 7 between driving power housing 2 and heat radiation Lamp cup inwall.

Like Fig. 1, Fig. 2, Fig. 4, Fig. 8, shown in Figure 10, on driving power housing 2 peripheries, be fixed with the Lamp cup bottom of dispelling the heat interlocks and accept ring 8, be circumferentially with a plurality of extraneous holes 9 that maintain the circulation of air with 7 bottoms, described space that make accepting ring 8 upper edges.

Like Fig. 1, shown in Figure 4; Be circumferentially with a plurality of extraneous through holes 10 that are connected with 7 tops, said space that make on the edge edge of pedestal 3; Circumferentially convex with in the inwall upper edge of LED luminescence component container cavity 4 and a plurality of the LED luminescence component to be carried out spacing spacing muscle 11; Like Fig. 1, Fig. 3, shown in Figure 4, the existence of spacing muscle 11 makes to leave between periphery and the Lamp cup inwall of LED luminescence component and makes through hole 10 and outside air keep the gap 12 of circulation.Described LED luminescence component comprises substrate 19, plastic tube 21 and lens 22, on substrate 19, is fixed with a plurality of led light sources 20, and plastic tube 21 is fixed on the substrate 19, and lens 22 are stuck in the plastic tube 21.

Like Fig. 1～shown in Figure 12; Described heat radiation Lamp cup 1 comprises Lamp cup body 13; Circumferentially be distributed with a plurality of radiating fins 14 in the periphery upper edge of Lamp cup body 13, be wrapped with outer cover 15 at radiating

fin

14,13 of the two ends up and down of outer cover 15 and Lamp cup bodies all leave a circle opening 16.Described outer cover 15 is to be connected to form by upper outlet body 17 and lower cover 18 two parts, and described upper outlet body 17 is an aluminium alloy one die cast with the heat radiation Lamp cup, and described lower cover 18 is processed for plastic material; Like Fig. 5～shown in Figure 7; Form at least two snapping portions 23 on the radiating fin of described upper outlet body 17 belows; Correspondence forms at least two buckling parts 24 on the inwall of described lower cover 18; The snapping portion of the buckling parts of described lower cover and upper outlet body 17 snaps together, and it is an integral body that upper and lower cover body is connected.The combination of upper and lower cover body makes the through hole length that forms between outer cover inwall and the fin can greatly satisfy the effect of cross-ventilation heat radiation.

Shown in figure 12; The heat radiation process of the utility model LED lamp is such, and for interior heat radiation air flow channel, cold air is entered in the space 7 by gap 12, through hole 10; And move upward, take away the heat of driving power, led light source generation via accepting the hole 9 that encircles on 8; For outer heat radiation air flow channel, cold air is entered in the through hole that forms between outer cover inwall and the fin by lamp body one end opening 16, moves upward to take away the heat that the heat radiation Lamp cup produces via the opening 16 of the lamp body other end.Inside and outside two-layer heat radiation air flow channel synergy, strengthen heat loss through radiation and free convection respectively, reach perfect heat radiation purpose.

The utility model is fit to the structural design of various LED light fixtures to be used, and comprises the light fixture of the LED of all built-in power designs of PAR lamp system type (PAR30, PAR38 etc.) and bulb lamp series (A60, A55 etc.).

Embodiment 2: the difference of present embodiment and embodiment 1 is: the space is arranged on the sidewall of heat radiation Lamp cup with the extraneous hole that maintains the circulation of air; Promptly the sidewall upper edge below the heat radiation Lamp cup circumferentially offers a plurality of described space and extraneous holes that maintain the circulation of air of making, and the sidewall upper edge of heat radiation Lamp cup top circumferentially offers a plurality of through holes that are connected with the space.

Claims

1. LED lamp with excellent heat dispersion performance; Comprise heat radiation Lamp cup, LED luminescence component; Described heat radiation Lamp cup comprises the Lamp cup body; Periphery upper edge at the Lamp cup body circumferentially is distributed with a plurality of radiating fins, it is characterized in that: be wrapped with outer cover at radiating fin, all leave a circle opening between the two ends up and down of outer cover and Lamp cup body.

2. a kind of LED lamp with excellent heat dispersion performance according to claim 1 is characterized in that: described outer cover is to be connected to form by upper outlet body and lower cover two parts.

3. a kind of LED lamp according to claim 2 with excellent heat dispersion performance; It is characterized in that: form at least two snapping portions on the radiating fin of described upper outlet body below; Correspondence forms at least two buckling parts on the inwall of described lower cover, and the buckling parts of described lower cover links to each other with snapping portion.

4. according to claim 2 or 3 described a kind of LED lamps with excellent heat dispersion performance, it is characterized in that: described upper outlet body is an aluminium alloy one die cast with the heat radiation Lamp cup, and described lower cover is that plastic material is processed.