CN104033745B - Led lamp - Google Patents

Abstract

An LED light fixture, comprising: the aluminum substrate comprises a V-shaped substrate, and the V-shaped substrate is formed by splicing two flat plates; the LED modules are arranged on the outer convex surface of the V-shaped substrate and are distributed in two rows, and each row of LED modules is arranged in parallel to the connecting line of the two flat plates; the two micro heat pipes are arranged close to the inner concave surface of the V-shaped substrate and correspond to the two rows of LED modules; the two graphite radiators are respectively arranged at two ends of the V-shaped substrate and positioned on the inner concave surface of the V-shaped substrate, the graphite radiators are connected with the end parts of the micro heat pipes, and the graphite radiators comprise a plurality of graphite radiating fins arranged at intervals; the heat generated by the LED module is conducted to the micro heat pipe through the V-shaped substrate, conducted to the graphite radiator through the micro heat pipe and then radiated out by the graphite radiator. The heat generated by the LED module of the LED lamp is mainly radiated along the path of the LED module, namely the micro heat pipe and the graphite radiator, the heat radiation is concentrated, and the heat radiation efficiency is high.

Description

LED lamps

【Technical field】

The invention relates to an LED lamp, in particular to an LED lamp with a graphite radiator.

【Background technique】

At present, LED lighting fixtures on the market mainly dissipate heat through aluminum substrate heat conduction and heat dissipation ribs or fans.

For high-power LED lamps, a large amount of heat is generated at the position of the light source in a relatively short period of time. The traditional heat dissipation direction is inaccurate, relatively blind, unable to concentrate heat dissipation, and the efficiency of heat conduction and heat dissipation is relatively low.

【Content of invention】

In view of the above situation, it is necessary to provide an LED lamp with concentrated heat dissipation and high heat dissipation efficiency.

A kind of LED light fixture, it comprises:

An aluminum substrate, including a V-shaped substrate, the V-shaped substrate is formed by splicing two flat plates;

A plurality of LED modules are installed on the convex surface of the V-shaped substrate and arranged in two rows, and each row of LED modules is arranged parallel to the intersection line of the two flat plates;

Two micro heat pipes are arranged close to the concave surface of the V-shaped substrate, and the two micro heat pipes are arranged corresponding to the two rows of LED modules; and

Two graphite heat sinks are respectively arranged at the two ends of the V-shaped base plate and are located on the concave surface of the V-shaped base plate, the graphite heat sinks are connected with the ends of the micro heat pipes, and the graphite heat dissipation The device includes a plurality of graphite heat sinks arranged at intervals;

Wherein, the heat generated by the LED module is conducted to the micro-heat pipe through the V-shaped substrate, then transferred to the graphite heat sink through the micro-heat pipe, and then dissipated by the graphite heat sink.

Compared with traditional LED lamps, the above-mentioned LED lamps have at least the following advantages:

(1) The above-mentioned LED lamps output the heat generated by the LED module to the graphite heat sink: the heat source of the LED lamp is the LED module, so the micro heat pipe is installed directly under the LED module, so that the heat generated by the LED module is directly Acting on the micro heat pipe, the micro heat pipe directly transfers the heat generated by the LED module to the graphite radiator through heat transmission. Because the micro heat pipe is adiabatic, there is no loss of heat during this transmission process. Therefore, the heat generated by the LED module is mainly dissipated along the path of the LED module-micro heat pipe-graphite radiator, and the heat dissipation is relatively concentrated.

(2) Because the heat transfer efficiency of graphite is almost twice that of aluminum, the heat dissipation efficiency of graphite radiator is much higher than that of aluminum substrate or heat dissipation rib, so that the heat transmitted by micro heat pipe passes through graphite heat sink in relative Therefore, the heat dissipation efficiency of the above-mentioned LED lamps is relatively high.

In one of the embodiments, the aluminum substrate further includes two side plates and two sets of heat dissipation fins, the two side plates are respectively connected to the edges of the two flat plates of the V-shaped base plate, and face toward the V-shaped base plate. The two groups of heat dissipation fins are respectively arranged on the two side plates, and each group of heat dissipation fins is composed of a plurality of heat dissipation fins arranged at intervals.

In one embodiment, the heat dissipation fins are rectangular sheet structures, the micro heat pipes are arranged parallel to the side plates, and the heat dissipation fins are vertically arranged on the outside of the side plates.

In one embodiment, an LED driver is further included, the LED driver is electrically connected to the LED module for driving the LED module, and the LED driver is installed between the two side plates.

In one of the embodiments, the graphite heat sink further includes an I-shaped main body, the graphite heat sink includes a set of first graphite heat sinks and two groups of second graphite heat sinks, the first graphite heat sink and the The beams of the I-shaped main body are connected, the two groups of second graphite heat sinks are respectively connected to the two ends of the I-shaped main body, and the two ends of the two micro heat pipes are respectively connected to the two ends of the I-shaped main body.

In one embodiment, the second graphite heat sink is a right-angle fan-shaped sheet structure, and the second graphite heat sink is arranged perpendicular to the micro heat pipe.

In one embodiment, the first graphite heat sink has a semicircular sheet structure, and the first graphite heat sink is arranged parallel to the micro heat pipe.

In one of the embodiments, a transparent part is further included, and the transparent part is covered on the V-shaped base plate, so that the V-shaped plate and the transparent part together form a sealed light source cavity.

In one of the embodiments, the transparent member includes an arched transparent cover and a rectangular frame around the periphery of the transparent cover, the transparent cover is convexly arranged, and the extending direction of the transparent cover is parallel to the The intersection line of the two plates.

In one embodiment, the convex surface of the V-shaped substrate is polished to form a reflective surface.

【Description of drawings】

1 is a perspective view of an LED lamp according to an embodiment of the present invention;

Fig. 2 is a top view of the LED lamp shown in Fig. 1;

Fig. 3 is a sectional view along line A-A in Fig. 2;

Fig. 4 is a bottom view of the LED lamp shown in Fig. 1 .

【detailed description】

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 1 to 4 , the LED lamp 100 according to the embodiment of the present invention includes an aluminum substrate 110 , a plurality of LED modules 120 , two micro heat pipes 130 and two graphite radiators 140 . The aluminum substrate 110 serves as the carrier of the LED module 120, and the two micro heat pipes 130 are mainly used to transfer the heat generated by the LED module 120 to the graphite radiator 140, and the graphite radiator 140 accelerates heat dissipation.

The aluminum substrate 110 includes a V-shaped substrate 111, and the V-shaped substrate 111 is formed by splicing two flat plates. Specifically, in the illustrated embodiment, the two flat plates are the same rectangular plates, and are spliced to form a V-shaped substrate 111 with an obtuse angle.

Further, the aluminum base plate 110 also includes two side plates 113 and two sets of cooling fins 115 , the two side plates 113 are respectively connected to the edges of the two plates of the V-shaped base plate 111 , and are arranged towards the inner side of the V-shaped base plate 111 . Two sets of heat dissipation fins 115 are respectively disposed on the two side plates 113 , and each set of heat dissipation fins 115 is composed of a plurality of heat dissipation fins 115 arranged at intervals. Since the opposite sides of the V-shaped substrate 111 are provided with heat dissipation fins 115 , the heat dissipation efficiency of the aluminum substrate 110 is accelerated, and the heat dissipation performance of the entire LED lamp 100 is improved.

Furthermore, the heat dissipation fins 115 are rectangular sheet structures, the micro heat pipes 130 are arranged parallel to the side plate 113 , and the heat dissipation fins 115 are vertically arranged on the outside of the side plate 113 . Since the heat dissipation fins 115 are vertically arranged on the outer side of the side plate 113 , that is, form a cross heat dissipation with the micro heat pipes 130 , thus the heat dissipation is divided into vertical and horizontal directions.

Further, the convex surface of the V-shaped substrate 111 is polished to form a reflective surface. The light scattered by the LED module 120 is reflected by the reflective surface and emitted from the light outlet of the LED lamp 100 , thereby improving the light utilization rate of the LED lamp 100 and increasing the brightness of the LED lamp 100 .

Further, the convex surface of the V-shaped substrate 111 is also provided with a plurality of strip-shaped reflective protrusions with a V-shaped cross section. The reflective protrusions are located on both sides of a row of LED modules 120 and are parallel to a row of LED modules The arrangement direction of 120 is set so as to fully diffuse and reflect the light emitted by the LED module 120 , so as to improve the uniformity of light emitted by the LED lamp 100 .

A plurality of LED modules 120 are installed on the convex surface of the V-shaped substrate 111 and arranged in two rows, and each row of LED modules 120 is arranged parallel to the intersection line of two flat plates of the V-shaped substrate 111 . Specifically, in the illustrated embodiment, a plurality of LED modules 120 in each row of LED modules 120 are arranged at equal intervals, so as to facilitate heat dissipation and emit light more uniformly.

The two micro heat pipes 130 are arranged close to the concave surface of the V-shaped substrate 111 , and the two micro heat pipes 130 are arranged corresponding to the two rows of LED modules 120 .

The two graphite heat sinks 140 are respectively disposed on two ends of the V-shaped substrate 111 and located on the concave surface of the V-shaped substrate 111 . The graphite heat sink 140 is connected to the end of the micro heat pipe 130 , and the graphite heat sink 140 includes a plurality of graphite heat sinks 141 arranged at intervals. Specifically in the illustrated embodiment, the graphite heat sink 140 also includes an I-shaped main body 143, and the graphite heat sink 141 includes a group of first graphite heat sinks 141a and two groups of second graphite heat sinks 141b, the first graphite heat sink 141a and the second graphite heat sink 141b The beams of the I-shaped main body 143 are connected, two sets of second graphite heat sinks 141b are respectively connected to the two ends of the I-shaped main body 143, and the two ends of the two micro heat pipes 130 are respectively connected to the two ends of the I-shaped main body 143.

Further, the first graphite heat sink 141 a is a semicircular sheet structure, and the first graphite heat sink 141 a is arranged parallel to the micro heat pipe 130 .

Further, the second graphite heat sink 141b is a right-angle fan-shaped sheet structure, and the second graphite heat sink 141b is arranged perpendicular to the micro heat pipe 130 .

Since the first graphite heat sink 141a is arranged parallel to the micro heat pipe 130 , the second graphite heat sink 141b is arranged perpendicular to the micro heat pipe 130 to form two-dimensional conduction to improve the heat dissipation efficiency of the graphite heat sink 140 .

Wherein, the heat generated by the LED module 120 is conducted to the micro heat pipe 130 through the V-shaped substrate 111 , then transferred to the graphite heat sink 140 through the micro heat pipe 130 , and then dissipated by the graphite heat sink 140 .

The LED lamp 100 also includes an LED driver 150 electrically connected to the LED module 120 for driving the LED module 120 , and the LED driver 150 is installed between the two side plates 113 .

The LED lamp 100 also includes a transparent part 160, which is covered on the V-shaped base plate 111, so that the V-shaped plate and the transparent part 160 together form a sealed light source cavity. Specifically in the illustrated embodiment, the transparent member 160 includes an arched transparent cover 161 and a rectangular frame 163 arranged around the periphery of the transparent cover 161. The transparent cover 161 is convexly arranged, and the extending direction of the transparent cover 161 is parallel to V. The intersection line of the two flat plates of the substrate 111. Since the transparent cover 161 is arched and protrudes outward, the transparent member 160 can not only seal the light source cavity, but also act as a diffusion plate to fully diffuse the light emitted by the LED module 120 and improve The uniformity of the light emitted by the LED lamp 100.

Further, in order to improve the light output brightness of the LED lamp 100, a plurality of semicircular protrusions are arranged on the convex surface of the transparent member 160, and the plurality of semicircular protrusions are arranged in an array for converging the light and playing the role of The role of the lens.

Compared with traditional LED lamps, the LED lamp 100 has at least the following advantages:

(1) The above-mentioned LED lamp 100 outputs the heat generated by the LED module 120 to the graphite heat sink 141: the heat source of the LED lamp 100 is the LED module 120, so the micro heat pipe 130 is installed directly under the LED module 120, In this way, the heat generated by the LED module 120 directly acts on the micro heat pipe 130, and the micro heat pipe 130 directly transmits the heat generated by the LED module 120 to the graphite radiator 140 through heat transmission, because the micro heat pipe 130 is adiabatic, so in this transmission There is no loss of heat in the process. Therefore, the heat generated by the LED module 120 is mainly dissipated along the path of the LED module 120 —the micro heat pipe 130 —the graphite radiator 140 , and the heat dissipation is concentrated.

(2) Because the heat transfer efficiency of graphite is almost twice that of aluminum, the heat dissipation efficiency of the graphite radiator 140 is much higher than that of the aluminum substrate or heat dissipation ribs, so that the heat transmitted by the micro heat pipe 130 passes through the graphite heat sink 141 is dissipated in a relatively short time, therefore, the heat dissipation efficiency of the LED lamp 100 is relatively high.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (9)

1. An LED lamp, characterized in that, comprising: The aluminum substrate includes a V-shaped substrate, and the V-shaped substrate is formed by splicing two flat plates; the aluminum substrate also includes two side plates and two sets of cooling fins, and the two side plates are respectively connected to the V-shaped substrate. The edges of the two flat plates are connected and set towards the inner side of the V-shaped base plate. The two groups of heat dissipation fins are respectively arranged on the two side plates, and each group of heat dissipation fins is composed of a plurality of heat dissipation fins arranged at intervals. Fin composition; A plurality of LED modules are installed on the convex surface of the V-shaped substrate and arranged in two rows, and each row of LED modules is arranged parallel to the intersection line of the two flat plates; Two micro heat pipes are arranged close to the concave surface of the V-shaped substrate, and the two micro heat pipes are arranged corresponding to the two rows of LED modules; and Two graphite heat sinks are respectively arranged at the two ends of the V-shaped base plate and are located on the concave surface of the V-shaped base plate, the graphite heat sinks are connected with the ends of the micro heat pipes, and the graphite heat dissipation The device includes a plurality of graphite heat sinks arranged at intervals; Wherein, the heat generated by the LED module is conducted to the micro-heat pipe through the V-shaped substrate, then transferred to the graphite heat sink through the micro-heat pipe, and then dissipated by the graphite heat sink. 2. The LED lamp according to claim 1, wherein the heat dissipation fin is a rectangular sheet structure, the micro heat pipe is arranged parallel to the side plate, and the heat dissipation fin is vertically arranged on the side plate outside of the board. 3. The LED lamp according to claim 1, further comprising an LED driver electrically connected to the LED module for driving the LED module, and the LED driver is mounted on between the two side panels. 4. The LED lamp according to claim 1, wherein the graphite heat sink further comprises an I-shaped main body, and the graphite heat sink includes a set of first graphite heat sinks and two groups of second graphite heat sinks, so that The first graphite heat sink is connected to the beam of the I-shaped main body, the two groups of second graphite heat sinks are respectively connected to the two ends of the I-shaped main body, and the two ends of the two micro heat pipes are respectively connected to the two ends of the I-shaped main body. The two ends of the above-mentioned work-type main body are connected. 5. The LED lamp according to claim 4, wherein the second graphite heat sink is a right-angle fan-shaped sheet structure, and the second graphite heat sink is arranged perpendicular to the micro heat pipe. 6. The LED lamp according to claim 4, wherein the first graphite heat sink is a semicircular sheet structure, and the first graphite heat sink is arranged parallel to the micro heat pipe. 7. The LED lamp according to claim 1, further comprising a transparent member, the transparent member is covered on the V-shaped substrate, so that the V-shaped substrate and the transparent member together form a sealed light source cavity. 8. The LED lamp according to claim 7, wherein the transparent member comprises an arched transparent cover and a rectangular frame arranged around the periphery of the transparent cover, the transparent cover is convexly arranged, and the The extending direction of the transparent cover is parallel to the intersection line of the two flat plates. 9. The LED lamp according to claim 1, wherein the convex surface of the V-shaped substrate is polished to form a reflective surface.