CN204730032U - A kind of bulb - Google Patents

Abstract

The utility model relates to a light bulb, which comprises a lamp holder, a lampshade, a circuit board, a radiator and an LED lamp. It is arranged in the lampshade, and the interior of the radiator is hollow and its shape matches the inner peripheral wall of the lampshade; the bottom of the radiator has a mounting surface, and the LED lamp is arranged on an aluminum substrate, and the aluminum substrate is arranged on The installation surface of the radiator is connected with the circuit board. The radiator in the utility model is integrally formed, which provides convenience for production and assembly; at the same time, the utility model installs the radiator in the lampshade, which can prevent dust pollution, and also has a waterproof effect, which improves the safety performance of the bulb ; Moreover, the LED lamp is set on the aluminum substrate, and the aluminum substrate is directly connected to the installation surface of the radiator, which effectively speeds up the heat transfer, so that the light bulb of the utility model has better heat dissipation performance.

Description

a light bulb

technical field

The utility model relates to the technical field of lighting fixtures, in particular to a light bulb.

Background technique

Traditional incandescent lamps (tungsten filament lamps) have the defects of high energy consumption and short life. Electronic energy-saving lamps can save energy consumption, but they cannot be popularized and applied due to the use of many heavy metal elements that pollute the environment. With the continuous development of LED technology, LED bulbs gradually replace traditional incandescent lamps as new energy-saving lamps.

In order to increase the heat dissipation performance of the bulb, a radiator is generally installed in the bulb. At present, the radiator in the common LED bulb on the market is mostly composed of two parts, which limits the production and assembly efficiency to a certain extent.

The Chinese invention patent "A LED Bulb Lamp Structure" (application number: 201310497241.7) with the authorized announcement number CN103486483B discloses a light bulb, which includes a bulb cover, an LED aluminum substrate, a heat sink and a lamp holder; the top and bottom of the heat sink are respectively Install the bulb cover and lamp holder, the LED aluminum substrate is built into the bulb cover and connected to the radiator; the LED aluminum substrate has an integrated LED lamp bead and a constant current drive circuit board, and is fixed on the top of the radiator by two screws , the constant current drive circuit board is electrically connected to the two poles of the lamp head through the heat sink through the screws. In order to facilitate the assembly of the bulb lamp with the above structure, the bulb cover and the lamp cap are respectively arranged on the two ends of the radiator, so that the radiator is exposed to the air, which affects the appearance on the one hand, and on the other hand, because the radiator has conductivity, If it is accidentally contaminated with water stains, it will easily cause safety hazards.

Therefore, further improvement is required for the current bulb lamp.

Utility model content

The technical problem to be solved by the utility model is to provide a light bulb with good heat dissipation performance and convenient production and assembly in view of the current state of the prior art.

The technical scheme adopted by the utility model to solve the above-mentioned technical problems is: a light bulb, including a lamp cap, a lampshade, a circuit board, a radiator and an LED lamp, the lampshade is connected to the lamp cap, the circuit board is electrically connected to the lamp cap, the Both the circuit board and the LED lamp are arranged in the lampshade, and it is characterized in that: the radiator is integrally formed and arranged in the lampshade, and the interior of the radiator is hollow and its shape matches the inner peripheral wall of the lampshade; the radiator The bottom of the radiator has an installation surface, and the LED lamp is arranged on an aluminum substrate, and the aluminum substrate is arranged on the installation surface of the heat sink and connected with the circuit board.

As a further improvement of the utility model, the lampshade includes an upper cover body and a lower cover body, the upper cover body penetrates up and down and the upper end is connected with the lower end of the lamp cap, the lower cover body has an upper port and the top is detachably connected to the upper lower end of the cover. Since the radiator of the present invention is arranged in the lampshade, and the LED lamp is installed on the mounting surface at the bottom of the radiator, the structure is adopted to facilitate the assembly and installation of the radiator, the aluminum substrate and the LED lamp.

Furthermore, the upper cover is formed with a connecting column extending downward, and the lower end of the connecting column has a threaded hole. Correspondingly, holes for screws to pass through are provided on the mounting surfaces of the aluminum substrate and the radiator. through hole. With the above structure, the screws pass through the through holes on the aluminum base plate and the mounting surface from bottom to top and screwed into the threaded holes, so that the radiator and the aluminum base plate can be fixed on the lampshade at the same time. The structure is simple and the assembly is convenient.

In each of the above solutions, the top of the lower cover is formed with an upwardly extending collar, and correspondingly, the bottom of the upper cover has a slot mated with the collar. With this structure, the connection between the upper cover body and the lower cover body is convenient and has a certain degree of airtightness.

As a preference, at least two connecting pieces located inside the convex ring are arranged at intervals on the convex ring, bayonet openings are opened on the connecting pieces, and gaps corresponding to the connecting pieces are opened on the upper lampshade inside the slot, corresponding to On the inner wall of the slot at the notch, a protrusion capable of being snapped into the bayonet is formed. With the above structure, on the one hand, it is convenient to connect and fix the upper cover body and the lower cover body; on the other hand, the connection structure is simple and easy to operate, which provides convenience for assembly.

Preferably, there are multiple LED lamps and they are arranged at intervals along the circumferential direction on the bottom surface of the aluminum substrate.

Compared with the prior art, the utility model has the advantages of:

The radiator in the utility model is integrally formed, which provides convenience for production and assembly; at the same time, the utility model installs the radiator in the lampshade, which can prevent dust pollution, and also has a waterproof effect, which improves the safety performance of the bulb ; Moreover, the LED lamp is set on the aluminum substrate, and the aluminum substrate is directly connected to the installation surface of the radiator, which effectively speeds up the heat transfer, so that the light bulb of the present invention has better heat dissipation performance.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Figure 2 is an exploded view of Figure 1;

FIG. 3 is a cross-sectional view of FIG. 1 .

Detailed ways

The utility model is described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 3, the light bulb of this embodiment includes a lamp cap 1, a lampshade 2, a circuit board 3, a radiator 4 and an LED lamp 5, the lampshade 2 is connected to the lamp cap 1, the circuit board 3 is electrically connected to the lamp cap 1, and the circuit board 3 and the LED lamp 5 are all located in the lampshade 2. The radiator 4 in this embodiment is integrally formed and arranged inside the lampshade 2 . The interior of the radiator 4 is hollow and its shape matches the inner peripheral wall of the lampshade 1 . The bottom of the heat sink 4 has a mounting surface 41, and the LED lamp 5 is arranged on an aluminum substrate 6. In this embodiment, there are multiple LED lamps 5 arranged at intervals along the circumferential direction on the bottom surface of the aluminum substrate 6. The aluminum substrate 6 is set On the mounting surface 41 of the radiator 4 and connected with the circuit board 3 . The radiator 4 of this embodiment is integrally formed, which provides convenience for production and assembly; the radiator 4 is installed in the lampshade 1, which can prevent dust pollution, and also has a waterproof effect, which improves the safety performance of the bulb; and, Setting the LED lamp 5 on the aluminum substrate 6 and directly connecting the aluminum substrate 6 to the installation surface 41 of the heat sink 4 effectively speeds up the heat transfer, so that the light bulb of this embodiment has better heat dissipation performance.

Specifically, the lampshade 2 includes an upper cover body 21 and a lower cover body 22, the upper cover body 21 penetrates up and down and the upper end is connected with the lower end of the lamp cap 1, the lower cover body 22 has an upper port and is connected to the upper cover body 21 in a detachable top. lower end. Since the radiator 4 of this embodiment is arranged in the lampshade 1, and the LED lamp 5 is installed on the mounting surface 41 at the bottom of the radiator 4, the above-mentioned structure is convenient for assembling and installing the radiator 4, the aluminum substrate 6 and the LED lamp 5 .

In this embodiment, a connecting column 211 extending downward is formed on the upper cover body 21, and the lower end of the connecting column 211 has a threaded hole. The through hole 100 through which the screw 7 passes. When assembling, screw the screws 100 through the through holes 100 on the aluminum substrate 6 and the mounting surface 41 from bottom to top and screw them into the threaded holes, so that the radiator 4 and the aluminum substrate 6 can be fixed on the upper lampshade 21 at the same time. The top of the lower cover 22 is formed with an upwardly extending protruding ring 221 , and correspondingly, the bottom of the upper cover 21 has a slot 212 mated with the protruding ring 221 . Four connecting pieces 222 located inside the convex ring 221 are arranged at intervals on the protruding ring 221 , the connecting piece 222 is provided with a bayonet 223 , and the upper lampshade 21 inside the slot 212 is provided with a gap 213 corresponding to the connecting piece 222 A protrusion 214 that can be snapped into the bayonet 223 is formed on the inner wall of the slot 212 corresponding to the notch 213 . Adopting the above structure, on the one hand, it is convenient to connect and fix the upper cover body 21 and the lower cover body 22 , on the other hand, the connection structure is simple and easy to operate, which provides convenience for assembly.

Claims (6)

1. A light bulb, comprising a lamp cap, a lampshade, a circuit board, a radiator and an LED lamp, the lampshade is connected with the lamp cap, the circuit board is electrically connected with the lamp cap, the circuit board and the LED lamp are all arranged in the lampshade, and It is characterized in that: the radiator is integrally formed and installed in the lampshade, and the inside of the radiator is hollow and its shape matches the inner peripheral wall of the lampshade; the bottom of the radiator has a mounting surface, and the LED lamp is arranged on On an aluminum base plate, the aluminum base plate is arranged on the mounting surface of the radiator and connected with the circuit board. 2. The light bulb according to claim 1, wherein the lampshade comprises an upper cover body and a lower cover body, the upper cover body penetrates up and down and the upper end is connected with the lower end of the lamp cap, and the lower cover body has an upper port And the top is detachably connected to the lower end of the upper cover body. 3. The light bulb according to claim 2, characterized in that: a connecting column extending downward is formed on the upper cover, and the lower end of the connecting column has a threaded hole, correspondingly, the aluminum substrate and the heat sink Through holes for passing screws are respectively opened on the mounting surface. 4. The light bulb according to claim 2, characterized in that: the top of the lower cover is formed with a protruding ring extending upward, and correspondingly, the bottom of the upper cover is mated with the above protruding ring. slot. 5. The light bulb according to claim 4, characterized in that: at least two connecting pieces located inside the convex ring are arranged at intervals on the convex ring, bayonet openings are opened on the connecting pieces, and the upper lampshade inside the slot There is a notch corresponding to the connecting piece on the top, and a protrusion that can be snapped into the bayonet is formed on the inner wall of the slot corresponding to the notch. 6. The light bulb according to any one of claims 1-5, characterized in that there are a plurality of said LED lamps arranged at intervals along the circumferential direction on the bottom surface of the aluminum substrate.