CN101457915B - LED lamps - Google Patents

Abstract

A light-emitting diode lamp, comprising a base, a top cover located above the base, several heat sinks and several light-emitting diode modules attached to the corresponding heat sinks, and the heat sinks are arranged around the top cover and the base at intervals Between them, the light-emitting diode modules are attached to the inner surface of the radiator respectively. Each LED module above is installed on the inner surface of a radiator and irradiates towards the space between the other two radiators, forming a three-dimensional light source with light in all directions, so that the surroundings of the LED lamps are illuminated, At the same time, each light-emitting diode module is separately installed on the spaced apart radiator, which will not cause thermal interference, and the overall heat dissipation effect will be guaranteed.

Description

LED lamps

technical field

The invention relates to a light-emitting diode lamp, in particular to a light-emitting diode lamp for outdoor lighting.

Background technique

As an emerging third-generation light source, although it cannot replace traditional incandescent lamps on a large scale, it has the advantages of long working life, energy saving, and environmental protection, and is generally favored by the market. Moreover, the current modules composed of light-emitting diodes can produce high-power, high-brightness light sources, so they will widely and revolutionaryly replace existing light sources such as traditional incandescent lamps, and then become the main light source that meets the theme of energy conservation and environmental protection.

However, as the power and brightness of LEDs or their modules increase, the heat generated by them will also increase. If the heating problem of LEDs cannot be properly resolved, the working life of LED lamps will be seriously affected. Therefore, a heat sink is usually installed on the LED module to dissipate heat. The heat sink has a flat bottom plate and several cooling fins formed on the bottom plate. For some high-power lamps, the light-emitting diodes are generally densely arranged on the base plate and connected with the base plate through heat conduction. In this way, the heat generated by the light-emitting diodes can be conducted to the heat dissipation fins through the bottom plate and dissipated into the surrounding air. However, the diode module is a planar light source mounted horizontally on the bottom of the heat sink. Its irradiation direction is single and the irradiation area is limited, which is difficult to satisfy users in many cases.

Contents of the invention

In view of this, it is necessary to provide a light-emitting diode lamp with a larger lighting area.

A light-emitting diode lamp, comprising a base, a top cover located above the base, several radiators and several light-emitting diode modules attached to the corresponding radiators, and the radiators are arranged on the top cover and the base at intervals Between them, the light-emitting diode modules are respectively pasted on the inner surface of the radiator.

Each LED module above is installed on the inner side of a radiator and irradiates towards the space between the other two radiators, forming a three-dimensional light source with light in all directions, so that the surroundings of the LED lamps are illuminated, At the same time, each light-emitting diode module is separately installed on the spaced apart radiator, which will not cause thermal interference, and the overall heat dissipation effect will be guaranteed.

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

Description of drawings

Fig. 1 is a three-dimensional assembled view of a preferred embodiment of the LED lamp of the present invention.

FIG. 2 is a three-dimensional exploded view of the LED lamp in FIG. 1 .

FIG. 3 is an inverted exploded view of the LED lamp in FIG. 2 .

Detailed ways

Please refer to Fig. 1-3, the light-emitting diode lamp in a preferred embodiment of the present invention is used for providing soft and uniform illumination light for indoor and outdoor some special occasions, and this light-emitting diode lamp comprises a base 10, is positioned at the base 10 tops The top cover 20, the three radiators 30 erected between the top cover 20 and the base 10 respectively close to their corresponding edges, the three lampshades 40 erected between the top cover 20 and the base 10 and connected to the adjacent two radiators 30 and respectively The three light-emitting diode modules 50 are attached to the inner surfaces of the three radiators 30 and face the three lampshades 40 .

The above-mentioned base 10 is integrally formed by metal or plastic, and includes a circular base plate 12 and an annular side wall 14 vertically extending downward from the periphery of the base plate 12 . The base plate 12 is provided with three arc-shaped accommodation grooves 120 equidistant from each other. The accommodation grooves 120 are used for accommodating and fixing the bottom end of the lampshade 40, which are close to the periphery of the base plate 12 and are at the same distance from the corresponding nearest periphery. . The base plate 12 is formed with a through hole 122 between two adjacent accommodating grooves 120 , and the through hole 122 allows the screw 100 to pass through from bottom to top and be screwed to the bottom of the heat sink 30 . A through hole 122 is defined in the center of the substrate 12 for the wires to pass through and be electrically connected to the LED module 50 . The annular side wall 14 can be sleeved on a lamp post (not shown in the figure) to fix the LED lamp.

Please refer to FIG. 3 , the top cover 20 includes a circular top plate 22 and an annular fixing frame 24 vertically extending downward from the top plate 22 . The fixing frame 24 is close to the edge of the top plate 22 and any point on it is equal to the distance from the nearest edge of the bottom plate 22 . The bottom surface of the fixing frame 24 is provided with three annular spaced grooves 240 corresponding to the three receiving grooves 120 of the base 10 , and the grooves 240 are used to clamp the top of the lampshade 40 . The outer wall of the fixing frame 24 is provided with a fixing hole 242 corresponding to two adjacent grooves 240 , and the fixing hole 242 is screwed with the screw 200 passing through the side of the radiator 30 to fix the radiator 30 .

The radiator 30 is integrally formed of metal materials with good thermal conductivity, such as aluminum and copper, and includes a heat conducting plate 32 and a plurality of cooling fins 34 extending outward from the heat conducting plate 32 . The heat conduction plate 32 is approximately rectangular, its height is approximately equal to the distance between the top cover 20 and the base 10, its width is approximately equal to the distance between two adjacent accommodating grooves 120 of the base 10, and the outer surface of the heat conduction plate 32 is arc-shaped. It is curved, and its inner side is convexly provided with a mounting platform 320 . The bottom and both sides of the mounting platform 320 extend out from the corresponding edge of the heat conducting plate 32. The top surface of the mounting platform 320 is recessed from the top surface of the heat conducting plate 32 to form a step portion 324. The top surface of the step portion 324 is a plane to resist The heat conduction plate 32 that is under the fixing frame 24 of the top cover 20 and above the installation platform 320 is against the outer wall of the fixing frame 24 . An installation hole 322 is defined in the middle of the bottom surface of the heat conducting plate 32 , and the installation hole 322 is screwed with the screw 100 passing through the hole 122 of the base 10 . The inner surface of the mounting platform 320 is a plane for the LED module 50 to be pasted thereon. The heat conducting plate 32 defines a through hole 326 at a central position above the stepped portion 324 , for screwing the screw 200 through the fixing hole 242 of the fixing frame 24 of the top cover 20 . Two opposite sides of the installation platform 320 respectively define a vertical locking slot 328 along its long side, and the locking slot 328 is used for locking the side of the lampshade 40 . The cooling fins 34 extend outwards from the surface of the heat conducting plate 32 . The cooling fins 34 are vertically arranged along the axis of the LED lamp and spaced parallel to each other. An airflow channel vertical along the axis is formed between two adjacent cooling fins 34 . The heat dissipation fins 34 define a plurality of parallel and spaced transverse channels 340 , and the transverse channels 340 are perpendicular to the heat dissipation fins 34 .

The above-mentioned lampshade 40 is a thin plate body with a circular arc surface projected into a rectangle, which can be made of transparent or translucent materials, such as glass, resin, and the like. A soft rubber frame can be added around the lampshade 20 to strengthen the combination of the lampshade 40 with the base 10 , the top cover 20 and the radiator 30 .

The above-mentioned LED module 50 includes a long rectangular circuit board 52 attached to the inner surface of the installation platform 320 of the heat sink 30 and a plurality of LEDs 54 mounted on the circuit board 52 and arranged along its length direction.

When the above-mentioned light-emitting diode lamps are assembled, the light-emitting diode module 50 is attached to the inner surface of the heat conduction plate 32 of the radiator 30 by means of locking screws; and fixed; the step portion 324 at the top of the radiator 32 abuts against the bottom of the top cover 20 fixed frame 24 and the heat conduction plate 32 above the mounting table 320 abuts against the outer wall of the fixed frame 24, and the screw 200 passes through the radiator 30 heat conduction plate The through hole 326 at the top of the top cover 20 and the fixing hole 242 of the fixing frame 24 of the top cover 20 are screwed together to fix the top of the radiator 30; On the top surface, the opposite sides of the lampshade 40 are locked into the slots 328 in the two opposite sides of the two adjacent radiators 30 .

When the above-mentioned light-emitting diode lamp is in operation, each light-emitting diode module 50 is installed on the inner surface of a heat sink 30 and faces a lampshade 40, and the light generated by each light-emitting diode module 50 is irradiated to the interval through the opposite lampshade 40. To illuminate one side of the LED lamp, a three-dimensional light source with light irradiating in all directions is formed, so that the surrounding area of the LED lamp is illuminated, and the irradiation area of the LED lamp is greatly increased. In addition, the heat generated by the LED module 50 is dissipated into the surrounding air through the radiator 30, and the cooling fins 34 of the radiator 30 are vertically arranged along the axis of the LED lamp, and a vertical wall is formed between two adjacent cooling fins 34. Straight air flow channels, these air flow channels are in the same direction as the up and down natural convection of the air flow heated up, so as to promote the air circulation and improve its heat dissipation efficiency. At the same time, each light emitting diode module 50 is separately installed in the spaced radiator 30 so as not to generate heat interference, and the overall heat dissipation effect will be guaranteed.

Claims (11)

1. A light-emitting diode lamp, comprising a base, a top cover positioned above the base, some heat sinks and some light-emitting diode modules attached to the corresponding heat sinks, characterized in that: the heat sink is arranged on the top cover Between the heat sink and the base, the heat sinks are spaced from each other and form a circle together, and the LED modules are attached to the inner side of the heat sink and facing the space between two adjacent heat sinks. 2. The light-emitting diode lamp according to claim 1, further comprising a plurality of lampshades arranged alternately with the heat sink, each light-emitting diode module attached to the inner surface of the heat sink along the radial direction of the light-emitting diode light Opposite to a lampshade. 3. The light-emitting diode lamp according to claim 1 or 2, wherein the heat sink comprises a heat conducting plate and a plurality of cooling fins extending outward from the heat conducting plate, the bottom end of the heat conducting plate is connected to the top surface of the base Combining and fixing, the top of the heat conducting plate is combined and fixed with the top cover. 4 . The light emitting diode lamp as claimed in claim 3 , wherein the heat conducting plate and the lampshade form a cylinder for accommodating the light emitting diode module. 5 . 5. The light emitting diode lamp as claimed in claim 3, wherein the base comprises a circular base and an annular side wall vertically extending downward from the edge of the base. 6. The light-emitting diode lamp as claimed in claim 5, wherein the top cover comprises a circular top plate and a ring-shaped fixing frame vertically extending downward from the top plate. 7. The light emitting diode lamp according to claim 6, characterized in that: the top of the heat conducting plate forms a stepped portion against the bottom surface of the fixing frame, and the fixing frame and the screw of the heat conducting plate passing through the upper part of the step portion are screwed together. Secure the top of the radiator together. 8 . The light-emitting diode lamp according to claim 6 , wherein the outer surface of the heat conducting plate is arc-shaped, and the inner surface thereof is a plane on which the light-emitting diode module is pasted. 9. The light-emitting diode lamp according to claim 8, wherein the heat dissipation fins extend outwards from the outer surface of the heat conduction plate in a divergent manner, the heat dissipation fins extend in parallel and at intervals along the vertical direction, and two adjacent heat dissipation fins Airflow channels are formed between the fins. 10. The light-emitting diode lamp according to claim 9, characterized in that: the top surface of the base is correspondingly provided with arc-shaped accommodating grooves spaced apart from each other to clamp the bottom end of the lampshade, and the bottom surface of the fixing frame of the top cover is provided with a clamping groove. The arc-shaped grooves spaced apart from each other are made on the top of the lampshade, and the bottom of the lampshade is clamped in the accommodating groove. 11. The light-emitting diode lamp as claimed in claim 10, wherein vertical slots are provided on both sides of the heat conducting plate of the radiator, and the two sides of the lampshade are respectively snapped into the slots of two adjacent radiators facing each other. .

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