JP3160000U - LED lighting device and heat dissipation structure thereof - Google Patents

Abstract

An LED illuminator having good heat dissipation efficiency and lowering the manufacturing cost and a heat dissipation structure thereof are provided. An LED lighting device having a heat dissipation structure includes a downlight, an LED module placed inside the downlight, and a heat dissipation structure that covers the outside of the downlight. The downlight is folded from the uppermost plate and the peripheral edge of the uppermost plate. The LED module includes a circuit board bonded to the inner surface of the uppermost plate and a plurality of LEDs electrically connected on the circuit board; and the heat dissipation structure includes a cover plate bonded to the outer surface of the uppermost plate; A plurality of heat dissipating pieces that are bent and extended from the peripheral edge of the cover plate and are spaced apart from each other are provided, and the heat dissipating pieces cover the outside of the side wall of the downlight to form a heat dissipating passage with the side wall. [Selection] Figure 1

Description

  The present invention relates to an LED lighting device, and more particularly to an LED lighting device including a heat dissipation device.

  In recent years, light emitting diode (LED) technology has been greatly developed and advanced day by day. In addition, due to the features of energy saving, long service life, small volume, quick response, etc., it seems that it will gradually replace the conventional light bulb and become the mainstream in the future.

  In general, the higher the efficiency of an LED, the more waste heat is associated with it. However, the high temperature has a very large negative effect on the lifetime and luminous efficiency of the LED. For this reason, an LED illuminator having a relatively high efficiency is usually provided with a heat dissipation structure, and dissipates high heat in a timely manner. In a known LED heat dissipation structure, a plurality of heat dissipation fins are usually installed on the outer surface of the lighting stand, and waste heat is immediately eliminated by the heat dissipation fins having a large heat dissipation area.

JP 2009-64636 A

  The problem to be solved is that the heat dissipating fins installed on the outer surface of the lighting stand have a large quantity and a large volume. Further, the illuminating stand and the heat radiating fin are usually manufactured by an integral molding method such as aluminum drawing or die casting. Mold costs are expensive and the manufacturing process is long. In addition, these heat radiation fins are likely to be wrinkled in the transportation process, which has an effect on the yield rate, which is currently the cause of the high cost of manufacturing LED lighting fixtures. .

  The present inventor intends to provide an LED lighting device and a heat dissipating structure thereof that can effectively improve the above-described drawbacks, have good heat dissipation efficiency, and reduce the manufacturing cost, in view of the above-mentioned drawbacks. .

  In order to solve the above-described problems, the present invention includes a downlight, an LED module placed inside the downlight, and a heat dissipation structure that covers the outside of the downlight. The downlight is bent from the uppermost plate and the peripheral edge of the uppermost plate. With extended side walls. The LED module includes a circuit board bonded to the inner surface of the uppermost plate and a plurality of LEDs electrically connected to the circuit board, and the heat dissipation structure extends from the lid plate bonded to the outer surface of the uppermost plate and a peripheral edge of the lid plate, The main feature is that a plurality of heat dissipating pieces are provided with a space between them, and the heat dissipating pieces are placed on the outside of the side wall of the downlight to form a heat dissipating passage with the side wall.

  According to the LED lighting device and its heat dissipation structure of the present invention, there are advantages of providing good heat dissipation efficiency and reducing the manufacturing cost.

It is a three-dimensional external view of the LED lighting fixture of this invention. It is a three-dimensional exploded view of the LED lighting device of the present invention. It is a use instruction figure of the LED lighting fixture of this invention. It is a 2nd Example of the LED lighting fixture of this invention. It is a 3rd Example of the LED lighting fixture of this invention.

  It is an object of the present invention to provide an LED lighting device that has good heat dissipation efficiency and reduces the manufacturing cost.

  It is another object of the present invention to provide an LED lighting device that is easy to assemble and easy to process.

  In order to achieve the above-described object, an LED lighting device of the present invention includes a downlight, an LED module, and a heat dissipation structure, and the downlight includes a top plate and a side wall bent and extended from a peripheral edge of the top plate. The module is placed inside the downlight. The LED module includes a circuit board that adheres to the inner surface of the uppermost plate and a plurality of LEDs that are electrically connected on the circuit board. The heat dissipation structure covers the outside of the downlight, and the heat dissipation structure adheres to the outer surface of the uppermost plate. A plurality of heat dissipating pieces bent from the peripheral edge are formed, and the heat dissipating pieces are placed on the outside of the side wall of the downlight to form an effective heat dissipating passage with the side wall.

  Another object of the present invention is to provide a heat dissipating structure for an LED illuminator, which is manufactured by a press method and bent with respect thereto, thereby reducing the manufacturing cost.

  In order to achieve the above-described object, the heat dissipating structure of the LED lighting device of the present invention is placed on the downlight of the LED lighting device, and the heat dissipating structure is formed by bending the cover plate and the peripheral edge of the cover plate. The heat radiation piece is covered outside the downlight and forms a heat radiation passage with the downlight.

  Compared with the publicly known one, the LED lighting device of the present invention does not use the known aluminum-drawn fins as a heat dissipation structure, but the cover plate and the heat dissipation piece of the heat dissipation structure are first manufactured by pressing, and then And then bending the heat dissipation structure into the cover outside the downlight. The processing and assembling method is simple and it is not necessary to manufacture a large amount of molds, so that the manufacturing cost can be greatly reduced. Furthermore, the heat dissipation structure of the present invention forms a heat dissipation path between the heat dissipation piece and the outside of the side wall of the downlight, allows external air to enter from there, removes the heat generated from some LED modules, Furthermore, heat was radiated from the heat radiating hole of the cover plate, and a better heat radiating function was achieved with a good natural convection design. Thereby, the practicality and economical efficiency of this invention can be improved more.

  Although the Example of the LED lighting fixture of this invention and its heat dissipation structure is described along a figure, an Example is for reference and description, and does not restrict | limit this invention.

  FIG. 1 and FIG. 2 are a three-dimensional external view and a three-dimensional exploded view of the LED lighting device of the embodiment of the present invention. The LED lighting device 1 of the present invention includes a downlight 10, an LED module 20, and a heat dissipation structure 30.

  The downlight 10 includes a top plate 11 and a side wall 12 that is bent and extended from a peripheral edge of the top plate 11, and a perforation 110 is provided at an intermediate position of the top plate 11. Further, the downlight 10 is a conical cylinder, and in this embodiment, the bottom edge of the side wall 12 is extended with a shoulder 13 formed separately, and the end of the shoulder 13 is extended outwardly with a convex edge 14.

  The LED module 20 is placed inside the downlight 10 and includes a circuit board 21 and a plurality of LEDs 22. These LEDs 22 are installed on the circuit board 21 and are electrically connected to the circuit board 21. The circuit board 21 is bonded to the inner surface of the uppermost plate 11 of the downlight 10 and has a conductor 23 for providing power. Prepare.

  The heat dissipation structure 30 is placed outside the downlight 10. The heat dissipating structure 30 includes a cover plate 31 and a plurality of heat dissipating pieces 32 which are formed by being bent from the peripheral edge of the cover plate 31 and spaced from each other. The cover plate 31 is bonded to the outer surface of the uppermost plate 11 of the downlight 10, and through holes 310 are provided corresponding to the 110 perforations of the uppermost plate 11. The lead wire 23 of the LED module 20 is inserted into the perforation 110 and the through-hole 310, and the connection method of the lid plate 31 and the uppermost plate 11 of the downlight 10 is screwed or other methods such as heat conductive resin. To achieve.

  Further, the cover plate 31 is provided with a plurality of first heat radiation holes 311. These first heat radiating holes 311 are provided in the vicinity of the peripheral edge of the cover plate 31, and these heat radiating pieces 32 are provided in a ring shape, and each heat radiating piece 32 is provided with a second heat radiating hole 320. The end of the heat dissipating piece 32 is a free end, and the shoulder portion 13 of the downlight 10 is pressed and installed.

  FIG. 3 is a usage instruction diagram of the LED lighting device of the present invention. In this embodiment, the LED illuminator 1 is further provided with a translucent light cover 40 at the opening portion of the downlight 10 to prevent foreign objects such as mosquitoes and moths from entering the downlight 10. To prevent. As can be seen from the figure, these heat radiating pieces 32 cover the outside of the side wall 12 of the downlight 10 and form a heat radiating passage 100 together with the side wall 12. Thereby, when the LED lighting device 1 shines, the heat generated from the LED module 20 is conducted to the uppermost plate 11 of the downlight 10 through the circuit board 21 and further from the uppermost plate 11 to the heat dissipation structure. The heat generated on the LED module 20 is radiated from the cover plate 31 and the heat radiating plates 32 by the conduction of the cover plate 31 and finally the conduction of the cover plate 31.

  In addition, a heat dissipation passage 100 is formed between the side wall 12 of the downlight 10 and the heat dissipation piece 32 of the heat dissipation structure 30. Therefore, when the external air enters the heat radiation passage 100 from the second heat radiation hole 320 of the heat radiation piece 32 and emits heat generated from a part of the LED modules 20, the hot air is formed. The heat is radiated from the first heat radiating hole 311 (see FIG. 1) established in 31.

  FIG. 4 shows a second embodiment of the LED lighting device and the heat dissipation structure thereof according to the present invention. The present embodiment and the first embodiment are approximately the same, but the difference is the heat dissipating piece 32 'of the heat dissipating structure 30' of the LED illuminator 1 ', and the ends of these heat dissipating pieces 32' are connected to each other. The cover ring 321 ′ is formed. When the heat dissipation structure 30 ′ is put on the outside of the downlight 10, the cover ring 321 ′ presses the shoulder portion 13 of the downlight 10.

  FIG. 5 shows a third embodiment of the LED lighting device of the present invention and its heat dissipation structure. The present embodiment and the first embodiment are substantially the same except that the conductor 23 "of the LED module 20" of the LED illuminator 1 "is installed on the side wall 12" of the downlight 10 "in this embodiment. A perforation 120 ″ is installed in the perforation 120 ″ and the lead wire 23 ″ is passed through the perforation 120 ″. Therefore, it is not necessary to penetrate through the top plate 11 ″ of the downlight 10 ″ and the cover plate 31 ″ of the heat dissipation structure 30 ″, and intruders such as mosquitoes and moths enter the downlight 10 ″. Has the effect of preventing.

  The above-described present invention is a preferred embodiment, and does not limit the scope of claims of the present invention. In addition, all changes in equivalent effects using the patent spirit of the present invention belong to the scope of claims of the present invention.

DESCRIPTION OF SYMBOLS 1 LED lighting tool 10 Downlight 100 Heat radiation passage 11 Top plate 110 Perforation 12 Side wall 13 Shoulder part 14 Convex edge 20 LED module 21 Circuit board 22 LED
23 Conductor 30 Heat radiation structure 31 Cover plate 310 Through hole 311 First heat radiation hole 32 Heat radiation piece 320 Second heat radiation hole 50 Translucent light cover 1 'LED illuminator 30' Heat radiation structure 32 'Heat radiation piece 321' Cover ring 1 "LED illumination Tool 10 "Downlight 11" Top plate 12 "Side wall 120" Perforation 20 "LED module 23" Conductor 30 "Heat radiation structure 31" Cover plate 32 "Heat radiation piece 40 Translucent light cover

Claims (10)

In LED lighting equipment,
A downlight comprising a top plate and a side wall bent and extended from the peripheral edge of the top plate;
An LED module that is placed inside the downlight and includes a circuit board that adheres to the inner surface of the uppermost plate and a plurality of LEDs that are electrically connected to the circuit board;
A cover plate that covers the outside of the downlight and is bonded to the outer surface of the uppermost plate, and a plurality of heat dissipation pieces that are bent from the peripheral edge of the cover plate, and these heat dissipation pieces are outside the side wall of the downlight. An LED illuminator comprising: a heat radiating structure that forms a heat radiating passage with the side wall.   The LED illuminator according to claim 1, further comprising a translucent light cover, wherein the downlight includes an opening, and the translucent light cover is coupled to the opening portion.   The lid plate is provided with a plurality of first heat radiation holes, the first heat radiation holes are provided near the peripheral edge of the lid plate, and the bottom end of the side wall of the downlight forms a shoulder portion and extends. The end of the shoulder has a convex edge extending outward, and these heat dissipating pieces are installed on the shoulder with a gap to the peripheral edge of the lid plate, and each heat dissipating piece has a second heat dissipating hole. The LED lighting device according to claim 1, wherein the LED lighting device is molded.   The LED lighting device according to claim 1, wherein the circuit board includes a conductive wire, and the downlight is provided with a perforation, and the conductive wire passes through the perforation.   2. The LED lighting device according to claim 1, wherein the end of each of the heat dissipating pieces is a free end, and the heat dissipating pieces are ring-shaped radially.   The LED lighting device according to claim 1, wherein ends of the heat radiation pieces are connected to each other to form a cover ring. In the heat dissipation structure of LED lighting equipment,
A cover plate and a plurality of heat dissipating pieces formed by bending from the periphery of the cover plate, and covering the outside of the down light. A heat dissipation structure for an LED lighting device, wherein a heat dissipation passage is formed together with the downlight.   The lid plate is provided with a plurality of first heat radiating holes, the first heat radiating holes are provided near the peripheral edge of the lid plate, and the heat radiating pieces are spaced from the peripheral edge of the lid plate. The heat radiation structure for an LED lighting device according to claim 7, wherein each of the heat radiation pieces is provided with a second heat radiation hole.   8. The LED illuminator and the heat dissipation structure thereof according to claim 7, wherein the end of each of the heat dissipating pieces is a free end, and these heat dissipating pieces are formed in an annular radial shape.   8. The heat radiation structure for an LED lighting device according to claim 7, wherein the ends of the heat radiation pieces are connected to each other to form a cover ring.

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