JP3166851U - LED bulb - Google Patents

Abstract

An LED bulb that is bright and reliably avoids damage due to overheating of the bulb. A light cover, a heat transfer basic body, a plurality of heat dissipating pieces, a heat transfer member, and a plurality of LED light emitting members are provided. A plurality of heat radiating pieces 3 are connected to the periphery of the heat transfer basic body 2, and the heat transfer basic body 2 is provided with a central hole 21 for tightly storing the heat transfer member 4. The exposed end of the heat transfer member 4 is formed by press-molding a plurality of inclined surfaces 41 and a top surface 42, and one or more LED light emitting members 5 are bonded on the inclined surfaces 41 and the top surface 42, respectively. [Selection diagram] Fig. 1

Description

  The present invention relates to an LED bulb, and more particularly to an LED bulb having an excellent heat radiation function capable of multi-directional projection.

Since the conventional LED bulb has all the LED light emitting members inside facing forward, the light source is projected intensively in the same front direction, the peripheral light source is relatively weak, and the brightness tends to be insufficient, The overall brightness of the lighting is unbalanced. LED bulbs have the advantage of low power consumption, but have low heat resistance, and heat dissipation is a problem to be solved.
In addition, it is known that conventional LED bulbs use a cast metal heat-dissipating outer shell to dissipate heat, but it is heavy and expensive as a whole, and the heat dissipating effect is very limited, which is not practical. .

  Based on the development trend over the past few years, ordinary LED or high-efficiency LED light bulbs have gradually replaced traditional tungsten incandescent bulbs, and related technologies have also improved. However, known LED bulbs radiate heat using the thermal conductivity of the LED main body and its power supply pins or circuit board. However, since the temperature rises when used for a long time, the LED's electrical failure or damage will be reduced. It is easy to wake up. In particular, the heat radiation caused by the increasing temperature with the increase in the number of LED light-emitting members is a bigger problem.

  An object of the present invention is to provide an LED bulb that is bright as illumination and reliably avoids damage due to overheating of the bulb.

  To achieve the above object, an LED bulb according to the present invention includes a light cover, a heat transfer basic body, a plurality of heat radiation pieces, a heat transfer member, and a plurality of LED light emitting members. A plurality of heat radiating pieces are coupled to the periphery of the heat transfer basic body, and the heat transfer basic body is provided with a central hole for tightly storing the heat transfer member. The exposed end of the heat transfer member is formed by press-molding a plurality of inclined surfaces and top surfaces, and one or more LED light emitting members are bonded to the inclined surfaces and top surfaces, respectively.

  Thereby, in order to produce a multi-directional projection effect in a some LED light emission member using a different angle, the brightness of the whole illumination is raised. Moreover, since the heat sources of the plurality of LED light emitting members pass through the heat transfer member intensively and are quickly released via the plurality of heat radiation pieces, a large amount of heat energy generated simultaneously by the plurality of LEDs is generated. It exhibits the effect of quickly and effectively dissipating heat and reliably avoids damage caused by overheating of the light bulb or LED light emitting member.

Furthermore, the LED bulb according to the present invention may be formed by pressing a flat cone having a multi-sided inclined surface and a top surface at the exposed end of the heat transfer member, and each inclined surface and the top surface are each one or more. By bonding the LED light-emitting members, the multi-directional projection effect is reliably achieved, and the brightness of the entire illumination is enhanced.
Further, in the LED bulb according to the present invention, the central hole of the heat transfer member may be a through-hole via (through hole), or a blind via when necessary, and the heat transfer member is closely fitted and fixed inside. . Thus, the entire assembly becomes more convenient and quick and the coupling becomes stable.

Furthermore, the LED bulb according to the present invention may be a heat transfer member that selects a heat pipe or a copper rod (or copper pipe), or may be integrally formed directly on the upper end of an aluminum heat transfer basic body. Thereby, the heat source provided to the plurality of LED light emitting members radiates heat quickly through the plurality of heat radiation pieces after intensively passing through the heat transfer member.
Furthermore, the LED bulb according to the present invention supports a plurality of heat dissipating pieces installed around and surrounded by a heat transfer basic body by any one of close fitting, bonding by solder welding, fixing by rivets, etc. An end face may be formed and combined with a light cover which is a half outer shell covering lid. Thereby, since all the several thermal radiation pieces become an exposed form, it can contact with external air completely and can further strengthen the thermal radiation effect.

1 is an exploded perspective view showing an LED bulb according to a first embodiment of the present invention. 1 is a perspective view showing an LED bulb according to a first embodiment of the present invention. 1 is a plan view showing an LED bulb according to a first embodiment of the present invention. It is sectional drawing which follows the AA line of FIG. It is a top view which shows the LED light bulb by 2nd Embodiment of this invention. It is sectional drawing which shows the LED bulb by 3rd Embodiment of this invention. It is sectional drawing which shows the LED light bulb by 4th Embodiment of this invention.

(First embodiment)
As shown in FIGS. 1 to 4, a preferred embodiment of the LED bulb according to the first embodiment of the present invention includes a light cover 1, a heat transfer basic body 2, a plurality of heat radiating pieces 3, and a heat transfer member 4 (in the drawing). The heat transfer member selects a heat pipe), and includes a plurality of LED light emitting members 5.
The light cover 1 is a translucent half-cover lid, which is coupled to a support end face provided by a plurality of corresponding heat dissipating pieces 3 and adopts any system such as adhesive coupling or fitting coupling. The light cover 1 is fixed to the support end surfaces of the plurality of heat radiating pieces 3 (see FIGS. 2 and 4). Moreover, the heat transfer basic body 2, the heat transfer member 4, and the plurality of LED light emitting members 5 are disposed between the light cover 1 and the plurality of heat radiating pieces 3.

  The heat transfer basic body 2 has a heat transfer member 4 fitted at one end thereof, and an electric connection portion of a light bulb is coupled to the other bottom end (not shown). A plurality of heat dissipating pieces 3 are provided along the periphery of the heat transfer basic body 2 (see FIG. 3), and a central hole 21 for receiving the heat transfer member 4 is provided. The embodiment of the central hole 21 may be the illustrated through-hole via (through-hole), and the heat transfer member 4 is quickly brought into close contact and is fitted in and fixed. Based on the same theory, the embodiment of the central hole 21 can be a blind via when necessary, and is used to fit the heat transfer member into close contact and accommodate it in place.

  The plurality of heat dissipating pieces 3 are selected from any method such as close fitting, solder bonding, or fixing with rivets, and are coupled along the periphery of the heat transfer basic body 2. As shown in FIGS. 1 to 4, the plurality of heat dissipating pieces 3 are fixed to the heat transfer basic body 2 in a surrounding form, and the light cover 1 is supported and coupled by providing support end surfaces. Further, since all of the plurality of heat dissipating pieces 3 are exposed to the outside and come into contact with the outside air, a better heat dissipation effect can be obtained.

The heat transfer member 4 can be a heat pipe, is fitted into the central hole 21 of the heat transfer basic body 2, and a plurality of inclined surfaces 41 and a top surface 42 are press-molded at the exposed end. As shown in FIG. 1, the embodiment of the exposed end of the heat transfer member 4 is a triangular flat cone having a multi-side inclined surface 41 and a top surface 42, and each inclined surface 41 and top surface 42 are respectively provided. One or more LED light emitting members 5 are bonded.
The plurality of LED light emitting members 5 are constituted by one or a plurality of light emitting chips, and one or more LED light emitting members are bonded to the inclined surface 41 and the top surface 42 of the heat transfer member 4, respectively.

  Due to the combination of the constituent elements, different angles in the inclined surfaces 41 and the top surfaces 42 of the plurality of LED light emitting members 5 cause the plurality of LED light emitting members 5 to have a multidirectional projection effect. Thereby, the brightness of the whole illumination increases, and all the heat from the heat source of the LED light-emitting member 5 passes through the heat transfer member 4 intensively and is quickly transmitted. Furthermore, since heat is rapidly released through the plurality of heat dissipating pieces 3 exposed to the outside and in contact with air, damage due to overheating of the LED light-emitting member 5 is avoided, and the service life of the bulb is affected by the high temperature. Can be surely prevented.

(Second Embodiment)
As shown in FIG. 5, the LED light bulb according to the second embodiment of the present invention is obtained by further changing the form of the heat transfer member 4a. The heat transfer member 4a according to the second embodiment is formed by pressing a flat pyramid having a quadrilateral shape at the exposed end thereof to form the four sides of the inclined surface 41a and the top surface 42a. One or more LED light-emitting members 5 are bonded to 42a to improve the brightness of the peripheral light source.

(Modification)
Based on the same theory, the exposed ends of the heat transfer member 4 and the heat transfer member 4a according to the embodiment of the present invention are, for example, other polygonal flat states such as a pentagon, a hexagon, or an octagon. An embodiment in which the cone is press-molded is also possible.
Moreover, regarding the suitable combination form of the combination of the heat transfer member 4 or the heat transfer member 4a and the heat transfer basic body 2 according to the embodiment of the present invention, the total length of the heat transfer member 4 or the heat transfer member 4a and the central hole 21 are combined. It is also possible to extend to the same ratio corresponding to the depth.
The heat transfer member 4 or the heat transfer member 4a according to the embodiment of the present invention mainly adopts a structure that is tightly coupled and fits into the central hole 21, but is bonded by heat transfer adhesive. Alternatively, it is possible to employ a method of bonding by solder bonding, and it is not necessary to limit this.

  Although the heat transfer basic body 2 according to the embodiment of the present invention is a hollow mounting base in the drawings, it can be a solid mounting base if necessary. In addition, the shape of the heat transfer basic body 2 according to the embodiment of the present invention is not limited to a circular shape, and for example, it can be a mounting base having a triangular shape, a quadrangular shape, a polygonal shape, or other geometric shapes. All the theory of can be adopted. The shape, size, standard, and overall arrangement form of the plurality of heat dissipating pieces 3 according to the embodiment of the present invention can of course be appropriately changed or modified, and simple changes based on the main technical contents All replacements with equivalent effects are deemed not to depart from the scope of the inventive technique.

(Third embodiment)
As shown in FIG. 6, the LED bulb according to the third embodiment of the present invention can select a copper rod (or copper pipe) as another embodiment of the heat transfer member. According to the same theory, the heat transfer member 6 according to the third embodiment of the present invention of a copper rod (copper pipe) is fitted into the central hole 21 of the heat transfer basic body 2, and the exposed end thereof has a plurality of inclinations. A surface and a top surface are provided, and one or more LED light emitting members 5 are bonded to each other. Further, the copper rod may be a solid column or a hollow tube (that is, a copper pipe).

(Fourth embodiment)
As shown in FIG. 7, in the LED bulb according to the fourth embodiment of the present invention, the heat transfer member 71 is arranged directly on the upper end of the heat transfer basic body 7 made of aluminum by an integral molding method. In this case, the aluminum heat transfer basic body 7 can be omitted, but the integrally formed heat transfer member 71 is provided with a plurality of inclined surfaces and top surfaces. It is also possible to paste the LED light emitting member 5. The heat sources of the plurality of LED light emitting members can radiate heat quickly through the plurality of heat dissipating pieces 3 after passing through the heat transfer member 71 in a concentrated manner.

DESCRIPTION OF SYMBOLS 1 ... Light cover 2 ... Heat-transfer basic body 7 ... Heat-transfer basic body 3 ... Radiation piece 4 ... Heat-transfer member 4a ... Heat-transfer member 5 ... LED light-emitting member 6 ... Heat transfer member 71 ... Heat transfer member 21 ... Central hole 41 ... Inclined surface 41a ... Inclined surface 42 ... Top surface 42a ... Top surface

Claims (9)

In an LED bulb capable of multi-directional projection comprising a light cover, a heat transfer basic body, a plurality of heat radiation pieces, a heat transfer member, and a plurality of LED light emitting members,
The light cover is fixed to the plurality of corresponding heat dissipation pieces, and the heat transfer basic body, the heat transfer member, and the plurality of LED light emitting members are disposed between the light cover and the plurality of heat dissipation pieces. And
The heat transfer basic body is fitted with the heat transfer member at one end, a plurality of the heat radiating pieces are provided around the periphery, and a central hole for accommodating the heat transfer member therein is provided.
The plurality of heat radiation pieces are coupled along the periphery of the heat transfer basic body,
The heat transfer member is fitted into the center hole of the heat transfer basic body, a plurality of inclined surfaces and a top surface are press-formed at the exposed end, and one is provided on each of the inclined surface and the top surface. Bonding two or more LED light emitting members,
The plurality of LED light emitting members are constituted by a single or a large number of light emitting chips, and one or more of the LED light emitting members are respectively bonded to the inclined surface and the top surface of the heat transfer member. LED bulb.   The LED light bulb according to claim 1, wherein the light cover is a translucent half-cover lid, and is supported and coupled to a support end surface provided by a plurality of the heat dissipating pieces.   The LED bulb according to claim 1, wherein the central hole of the heat transfer member is a through-hole via.   The LED light bulb according to claim 1, wherein the central hole of the heat transfer member is a blind via.   The LED bulb according to claim 1, wherein the exposed end of the heat transfer member is a polygonal flat cone having a multi-sided inclined surface and a top surface.   The LED light bulb according to claim 1, wherein the heat transfer member adopts a close contact structure and fits into the central hole of the heat transfer basic body.   The LED light bulb according to claim 1, wherein the heat transfer member is a heat pipe.   The LED light bulb according to claim 1, wherein the heat transfer member is a copper rod or a copper pipe. In an LED bulb capable of multi-directional projection comprising a light cover, a heat transfer basic body, a plurality of heat radiation pieces, a heat transfer member, and a plurality of LED light emitting members,
The light cover is fixed to a corresponding plurality of the heat dissipation pieces, and the heat transfer basic body, the heat transfer member, and the plurality of LED light emitting members are disposed between the light cover and the plurality of heat dissipation pieces. ,
The heat transfer basic body is the heat transfer basic body made of aluminum, and one end thereof is provided with the heat transfer member integrally formed, and a plurality of the heat radiating pieces are provided around the periphery,
The plurality of heat radiation pieces are coupled along the periphery of the heat transfer basic body,
The heat transfer member is integrally formed at the upper end of the heat transfer basic body made of aluminum, and the exposed end has a plurality of inclined surfaces and a top surface, and each of the inclined surface and the top surface has one each. Bonding the above LED light emitting member,
The plurality of LED light emitting members are constituted by a single or a plurality of light emitting chips, and one or more LED light emitting members are respectively bonded to the inclined surface and the top surface of the heat transfer member. LED bulb.

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