CN212869406U

CN212869406U - LED bulb

Info

Publication number: CN212869406U
Application number: CN202021315992.4U
Authority: CN
Inventors: 秦彪
Original assignee: Shenzhen Qinbo Hexin Technology Development Co ltd
Current assignee: Shenzhen Qinbo Hexin Technology Development Co ltd
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2021-04-02
Anticipated expiration: 2030-06-27

Abstract

The utility model provides a LED bulb is to the similar maize shape of setting up of LED lamp pearl, plus the improvement that has the bulb of lamp shade. The aluminum metal PCB (4) is tightly attached to one surface of the aluminum heat conduction base plate (2), and the other surface of the heat conduction base plate (2) is tightly attached to the inner side surface of the lampshade (1). The heat from the LED lamp beads (3) is transferred to the heat conduction base plate (2) through the metal PCB (4), and then is transferred to the lampshade (1) through the heat conduction base plate (2) to be dissipated, so that the cost is reduced, and the heat dissipation problem is fundamentally improved.

Description

LED bulb

Technical Field

The utility model belongs to the technical field of the LED illumination, in particular to take LED bulb of lamp holder.

Technical Field

Heat transfer and heat dissipation always troubles the LED bulb, and directly influences the service life of the LED bulb. The G9LED bulb on the market, LED lamp pearl set up the similar maize shape, and the plus has the lamp shade to cover, and heat dispersion is low. In the industry, a ceramic inner core structure is adopted to improve heat dissipation; the number of the LED lamp beads is increased to solve the problem, the 2835 lamp beads of 0.5W are actually used for 0.05W, the cost is increased, the heat dissipation performance is not effectively changed, and the key of the heat transfer problem of the bulb is not found in the problem solving modes.

Disclosure of Invention

The utility model aims at providing a LED bulb, the heat transfer process rationale of foundation adopts with low costs, and simple structure mode has solved this kind of bulb heat dissipation problem.

The utility model discloses a LED bulb technical scheme: the LED bulb includes: the LED lamp comprises a lampshade, a heat conduction base plate, LED lamp beads, a metal PCB plate, a driving power supply, a lamp holder and a heat conduction base plate, wherein the heat conduction base plate is made of a metal plate, and is provided with a lamp bead window, a plurality of LED lamp beads are welded on the metal PCB plate in a surface mounting manner, the metal PCB plate is attached to one surface of the heat conduction base plate, the LED lamp beads are positioned in the lamp bead window, the inner side surface of the lampshade is attached to the other surface of the heat conduction base plate, heat from the LED lamp beads is transferred to the heat conduction base plate through the metal PCB plate, the heat is transferred to the lampshade through the heat conduction base plate. The utility model discloses in LED lamp pearl be a SMD lamp pearl (the SMD LED chip of good encapsulation).

Adopt metal PCB board, including the setting of heat conduction backing plate, strengthened inside heat conduction and conduct heat, LED lamp pearl not only can the lamp pearl of 0.5W power of in-service use, reduce the cost, heat dispersion also obtains the fundamental change.

Drawings

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown and described, and in which embodiments of the invention are shown by way of illustration, and not by way of limitation.

Fig. 1 is a schematic axial characteristic cross-sectional view of an LED bulb according to the present invention.

Fig. 2 is a schematic cross-sectional view taken along line a-a of fig. 1.

Fig. 3 is a cross-sectional characteristic profile schematic diagram of the LED bulb of the present invention.

Fig. 4 is a cross-sectional characteristic profile schematic diagram of an LED bulb according to the present invention.

Fig. 5 is a characteristic profile schematic diagram of the heat conduction base plate and the metal PCB board welded with the LED lamp beads.

Fig. 6 is a schematic axial characteristic cross-sectional view of an LED bulb according to the present invention.

Fig. 7 is a schematic axial characteristic cross-sectional view of an LED bulb according to the present invention.

In the figure: 1. the LED lamp comprises a lampshade, 2, a heat conduction base plate, 21, a lamp bead window, 3, LED lamp beads, 4, a metal PCB, 5, a driving power supply, 6, a lamp holder, 61 and an electrode connector.

Detailed Description

Fig. 1 and fig. 2 show the basic features of the present invention, the heat conductive backing plate 2 is generally made of aluminum plate, and is provided with a lamp bead window 21, the LED lamp bead 3 is generally made of 2835LED packaged chip (patch type), and is welded on the metal PCB 4, the metal plate of the metal PCB 4 is aluminum plate, and is generally called aluminum substrate, one side of the heat conductive backing plate 2 is adhered to the metal PCB 4, and the LED lamp bead 3 is located in the lamp bead window 21; the other side of the heat conducting base plate 2 is attached to the inner side surface of the lampshade 1. Realize that another face of thermal pad board 2 is pasting the medial surface of lamp shade 1, can also adopt integrative casting process, lamp shade 1 is the metal PCB board 4 outsides that the casting (note was moulded) pasted with LED lamp pearl at thermal pad board 2 and welding.

In fig. 1, a heat conduction base plate 2 and a metal PCB plate 4 with LED lamp beads 3 soldered are disposed on the inner side wall of a lampshade 1; the inner front wall of the lampshade 1 is also provided with a heat conduction base plate 2 and a metal PCB 4 which is welded with LED lamp beads 3. The figure shows that the bulb is hollow and is provided with a driving power supply 5, and the electrode connector 61 of the lamp holder 6 can be fixedly connected with a PCB (printed circuit board) in the driving power supply 5.

The present invention shown in fig. 3 differs from that shown in fig. 2 in that: the heat conduction base plate 2 arranged on the inner side wall of the lampshade 1 and the metal PCB 4 welded with the LED lamp beads 3 adopt two spliced structures, and split lines are along the axis direction. Of course, a three-piece structure may also be used.

Fig. 4 shows the utility model discloses, the lateral surface of lamp shade 1 has adopted convex-concave structure, and LED lamp pearl 3 is facing to the concave structure of lamp shade 1 lateral surface.

Fig. 5 shows that the height h of the LED lamp bead 3 on the metal PCB 4 is less than the thickness B of the heat conductive backing plate 2, as shown more clearly by the heat conductive backing plate 2 and the metal PCB 4 with the LED lamp bead 3 welded thereon; the heat conducting base plate 2 and the metal PCB 4 with the LED lamp beads 3 welded thereon are integrally bonded by adopting viscose glue; the thickness b of the aluminum plate used for the metal plate of the metal PCB board 4 should be not more than 0.4 mm.

Fig. 6 shows the utility model discloses, be provided with drive power supply 5's circuit on metal PCB board 4's the medial surface, drive power supply 5's components and parts set up (weld) on the circuit of metal PCB board 4's medial surface.

Fig. 7 is shown the utility model discloses, the inner chamber of lamp shade 1 has adopted the toper structure, sets up heat conduction backing plate 2 on the 1 inside wall of lamp shade and has adopted corresponding toper structure with pasting the metal PCB board 4 that has welded LED lamp pearl 3, and lamp shade 1's inside wall can be hugged closely to heat conduction backing plate 2 like this.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An LED bulb, comprising: lamp shade (1), heat conduction backing plate (2), LED lamp pearl (3), metal PCB board (4), drive power supply (5), lamp holder (6), its characterized in that: the heat conduction base plate (2) is made of a metal plate, a lamp bead window (21) is formed in the heat conduction base plate, a plurality of LED lamp beads (3) are welded on the metal PCB (4) in a surface mounting mode, one surface of the heat conduction base plate (2) is attached to the metal PCB, the LED lamp beads (3) are located in the lamp bead window (21), and the other surface of the heat conduction base plate (2) is attached to the inner side surface of the lampshade (1).

2. The LED bulb of claim 1, wherein: the height of the LED lamp beads (3) on the metal PCB (4) is smaller than the thickness of the heat conducting base plate (2).

3. The LED bulb of claim 1, wherein: the metal plate of the metal PCB (4) adopts an aluminum plate.

4. The LED bulb of claim 3, wherein: the thickness of the aluminum plate used for the metal plate of the metal PCB plate (4) is not more than 0.4 mm.

5. The LED bulb of claim 1, wherein: the heat conducting base plate (2) adopts an aluminum plate.

6. The LED bulb of claim 1, wherein: the heat conducting base plate (2) and the metal PCB (4) which is welded with the LED lamp beads (3) adopt a structure which is adhered into a whole by viscose glue.

7. The LED bulb of claim 6, wherein: the heat conduction base plate (2) arranged on the side wall of the lampshade (1) and the metal PCB (4) which is welded with the LED lamp beads (3) adopt a structure formed by splicing two or three.

8. The LED bulb of claim 1, wherein: the inner side surface of the metal PCB (4) is provided with a circuit of a driving power supply (5), and components of the driving power supply (5) are arranged on the circuit of the inner side surface of the metal PCB (4).

9. The LED bulb of claim 1, wherein: the outer side surface of the lampshade (1) adopts a convex-concave structure.

10. The LED bulb of claim 1, wherein: the inner cavity of the lampshade (1) adopts a conical structure, and the heat conduction base plate (2) arranged on the inner side wall of the lampshade (1) and the metal PCB (4) which is welded with the LED lamp beads (3) adopt a corresponding conical structure.