CN205716522U - Omnidirectional LED lamp - Google Patents

Abstract

The present application discloses an omnidirectional LED lamp, which includes a lamp holder, an electronic driver board, an interface board, at least three or more LED modules, a lower plastic lamp housing, and an upper plastic lamp housing; wherein the interface board has a narrow slot so that the LED module can be assembled into the narrow slot; wherein the interface board has a narrow slot for connecting the electronic driver board thereto; the interface board has a conductive trace formed on its surface so that the DC power generated by the electronic driver board can be supplied to the LED module through the interface board. The LED chip is arranged and mounted on the LED module so that a uniform light beam with a wide angle of more than 320 degrees with a high rear luminous flux can be achieved.

Description

Omnidirectional LED lights

technical field

The utility model relates to LED lamp technology, and in particular to an LED light bulb.

Background technique

Incandescent lamps have been banned in many western countries, and fluorescent lamps are not environmentally friendly and often offer a relatively low color rendering index. In order to reduce waste and use existing light bulb sockets, LED light bulbs using existing light bulb sockets have been developed. Now, it is more and more popular to use LED bulbs as indoor lighting. Since LED chips generate a considerable amount of heat, a conventional LED light bulb includes a heat sink, a radiating fin arrangement, and an insulated bulb base. Waste heat generated during bulb operation is transferred to the heat sink and radiated out through the radiating fin arrangement.

Referring to A-19 or similar spherical LED bulbs for indoor lighting, the basic requirements for its luminous intensity distribution and brightness include that the light emitted by the lamp should be omnidirectional, the luminous intensity distribution should be as uniform as possible, and the bulb above And the luminous flux of the area below should reach a set value to avoid unevenness of light. In order to manage the production of LED light bulbs, Energy Star (Energy Star) issued LED lighting standards, which stipulated the luminous intensity distribution of omnidirectional LED lamps. In this standard, it is stipulated that the omnidirectional bulb should have a uniform distribution of luminous intensity (vertical axis symmetry) in the area of 0 degrees to 135 degrees. The difference between the luminous intensity in this area and the average luminous intensity in the entire 0° to 135° area should not exceed 20%. At least 5% of the total flux (lumens) must be emitted in the area of 135 degrees to 180 degrees. This means that in the area within 270 degrees below the bulb, the luminous intensity should be large and uniform, while in the area within 90 degrees above the bulb, the luminous intensity flux should not be too small.

Since the LED chip source is always mounted on a thermally conductive surface, the maximum beam angle of the LED that can be achieved is 180 degrees, and the half-intensity angle is about 140 degrees. Existing LED bulbs are composed of multiple groups of LED chips mounted on a flat surface, so the beam angle of the bulb cannot be too wide. Some LED bulbs use a specific shape of the cover lens to give the bulb a wider beam angle, but this cannot achieve the uniform luminous intensity requirement of Energy Star. Chinese patent CN201589090 discloses "a light bulb", which can achieve a large emission angle. However, it is difficult to manufacture due to its complicated structure and the requirement of a heat sink at the lower part of the bulb. The heat sink in the lower part of the bulb body also blocks the light beam and thus cannot achieve a wide beam angle.

Utility model content

The technical problem is to provide an omnidirectional LED bulb with simple structure, conventional installation, good heat dissipation and uniform light distribution.

In order to solve the above problems, an omnidirectional LED lamp is provided, which includes a light-transmitting bulb housing, several curved LED modules (also serving as heat sinks), a circuit board, and an interface board (which connects the LED modules and the lamp socket). The LED chips are arranged on the LED module board so that a uniform beam has a beam angle of 320 degrees or wider and a high back light intensity flux. The bulb structure has a heat sink that does not block any light intensity from the LED chips. All LED chips are mounted on a curved metal plate with good conductive properties. The LEDs may be arranged on the upper part of the metal plate and leave the lower part of the metal plate as a heat sink, which guides away the heat generated by the LED chips. The shape of the LED module (the metal plate on which the LED chip is mounted) is made into an elongated S shape, so that the light beam of the LED chip on the LED module can provide good and uniform light intensity.

According to one aspect of the present invention, an omnidirectional LED light bulb is provided, including a lamp holder, an electronic driver board, an interface board, at least three or more LED modules, a lower plastic lamp housing and an upper plastic lamp housing; wherein the The interface board has a slot so that the LED module can be fitted into the slot; wherein the interface board has a slot for connecting the electronic driver board thereto; the interface board has a Conductive traces formed on the surface so that DC power generated by the electronic driver board can be supplied to the LED module through the interface board.

Optionally, the upper plastic lamp housing and the lower plastic lamp housing are connected together by glue or ultrasonic welding.

Optionally, said LED electronic driver circuit is integrated within said interface board.

Optionally, the lower plastic lamp housing has ventilation holes near the lamp holder, and the lamp holder is a screw base.

Optionally, for bulbs having an electrical power consumption of 5 watts or less, the lower plastic lamp housing has no ventilation holes.

In the present invention, 3 to 6 LED modules are arranged to provide a wide beam angle. The light source is arranged away from the rear portion of the bulb, so the shading range is very small. The LED module is elongated so that the lower part of the LED module can be treated as a heat sink to guide heat away from the LED chip. The electronic driver board is positioned in the lower part of the bulb, and some parts of it are actually inside the metal screw base away from the heat source and the LED chips, which ensures a more stable working environment for the electronic driver board. Therefore, a more stable and efficient LED bulb with a true omnidirectional light source can be achieved.

Description of drawings

Fig. 1 is a schematic structural diagram according to an embodiment of the present utility model;

Fig. 2 is an exploded view of the LED lamp according to the present invention;

Fig. 3 (a) is the top view of the LED light bulb according to the embodiment of the present utility model;

Fig. 3 (b) is the top view of the LED light bulb according to another embodiment of the present utility model;

Fig. 4 is a perspective view of the LED module.

detailed description

As shown in Figures 1 and 2, this embodiment consists of a screw lamp holder 1, a positive terminal lamp holder 2, an electronic driver board 3 with two wires 9 connected to lamp holders 1 and 2, an interface connection board 4, a lower outer lamp Housing 5 , LED module 7 with LED chip 6 and upper outer lamp housing 8 . The lamp holder 1 is an E26 or E27 lamp holder, which is closely connected with the lower outer lamp housing 5 . The lower lamp housing 5 is made of highly light-transmitting material and has a threaded base so that the metal lamp holder can be tightly screwed into the lamp housing 5 . Electronic driver board 3 is vertically mounted to interface board 4 . The power supply to the electronics driver board is achieved by wires 9 to screw lamp holders 1 and live terminals 2 . The interface board 4 has conductive traces and slots on it so that the lower part of the LED modules 7 can be fitted into the slots and thus all LED module arrangements can be firmly placed into the desired positions. The conductive traces on the LED module 7 and the interface board 4 can be soldered together at the junction of the LED module and the interface board. Similar connections can be made to form the connection between the electronics driver board 3 and the interface board 4 . The power supply generated by the electronics driver board 3 can now flow from the electronics driver board 3 through the interface board 4 to the LED module 7 . The LED module board 7 is an aluminum circuit board that can be bent and has LED chips mounted on its upper surface. LED modules can be bent to desired angles and shapes to achieve wide beam angles. The upper outer lamp envelope 8 can be joined to the lower outer lamp envelope 5 by gluing or ultrasonic welding.

As shown in Figure 3(a), Figure 3(b) and Figure 4, 3 to 6 LED modules should be used for one bulb. The number of LED modules used will depend on the light intensity that needs to be achieved. The interface board has conductive traces and is used to connect all the LED modules and the electronic driver board together so that power from the driver board can be easily distributed to all the LED modules. This interface is also used to hold all the LED modules in the correct position. If larger size bulbs are made and the interface board is also larger and has more space, the electronic LED driver board can be integrated into the interface board to simplify the manufacturing process. The bulb housing is formed from a bulb-shaped high-gloss transparent material. The ventilation hole is located on the lower bottom of the bulb, near the screw base of the bulb. Bulbs with a power consumption of 5W or less do not require vent holes. The electronic driver board has circuitry connected to the metal bulb base which supplies the main AC voltage which is required to provide the required DC voltage to the LED module.

Claims (5)

1. omnidirectional's LED bulb, it is characterized in that, including lamp socket (1), electronic driver plate (3), interface board (4), at least three or more LED module (7), bottom plastic lamp housing (5) and upper plastic lamp housing (8)；Wherein said interface board (4) has slit, thus described LED module (7) can be mounted in described slit；Wherein said interface board (4) has the slit for described electronic driver plate (3) being attached to；Described interface board (4) has the conductive trace formed in its surface, thus the DC electric power generated by described electronic driver plate (3) can be supplied to described LED module (7) by described interface board (4).

Omnidirectional the most according to claim 1 LED bulb, it is characterised in that together with wherein said upper plastic lamp housing and described bottom plastic lamp housing are attached to by viscose glue or ultra-sonic welded.

Omnidirectional the most according to claim 1 LED bulb, it is characterised in that wherein said electronic driver plate is integrated in described interface board (4).

Omnidirectional the most according to claim 1 LED bulb, it is characterised in that wherein said bottom plastic lamp housing (5) has air vent near described lamp socket (1), and described lamp socket (1) is screw pedestal.

Omnidirectional the most according to claim 1 LED bulb, it is characterised in that wherein for having 5 watts or the bulb of more low power consumption power, described bottom plastic lamp housing (5) does not has air vent.