OMNIDIRECTIONAL LED LAMP

Abstract

An omnidirectional LED lamp comprises a light transmission bulb shell, several curved LED modules, a circuit board, and an interface board that connects to LED modules and lamp base. The LED chips are arranged and mounted on the LED module boards so that a uniform light beam with more than a 320 degree wide angle and high rear light flux can be achieved.

Claims

1. An omnidirectional LED light bulb comprising a lamp base 1, an electronic driver board 3, an interface board 4, at least 3 or more LED modules 7, a lower plastic lamp shell 5 and an upper plastic lamp shell 8, wherein the interface board 4 has slots so that the LED module 7 can be fitted into the slots, wherein the interface board 4 has a slot for connecting the electronic driver board 3 on it, the interface board 4 has electrical conduction traces build on its surface so that the DC electric power which is generated from the electronic driver board 3 can be supply to the LED modules 7 via the interface board 4.

2. The omnidirectional LED light bulb according to claim 1, wherein the upper and lower plastic lamp shells are joined together by glue or ultrasonic weld.

3. The omnidirectional LED light bulb according to claim 1, wherein the LED electronic driver circuit is integrated in the interface board 4.

4. The omnidirectional LED light bulb according to claim 1, wherein the lower plastic lamp shell 5 has ventilation holes near the lamp base 1, and the lamp case 1 is a screw base.

5. The omnidirectional LED light bulb according to claim 1, wherein the lower plastic lamp shell 5 has no ventilation holes for bulbs which has 5 watt or lower electrical consumption power.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a schematic structure diagram according to an embodiment of the present invention;

[0015] FIG. 2 is an exploded view of an LED lamp in accordance with the present invention;

[0016] FIG. 3(a) is a top view of an LED light bulb according to the embodiment of the present invention;

[0017] FIG. 3(b) is a top view of an LED light bulb according to another embodiment of the present invention;

[0018] FIG. 4 is the oblique view of an LED module.

[0019] FIGS. 1-4 are shown drawn approximately to scale. However, other relative dimensions may be used if desired.

EMBODIMENTS OF THE INVENTION

[0020] As shown in FIG. 1 and FIG. 2, the present embodiment includes a screw lamp base 1, a positive terminal lamp base 2, an electronic driver board 3 with two wires 9 connect to the lamp base 1 and 2, an interface connection board 4, a lower outer lamp shell 5, LED module 7 with LED chips 6, and an upper outer lamp shell 8. The lamp base 1 is a E26 or E27 lamp base which is tightly connected with the lower outer lamp shell 5. The lower lamp shell 5 is made of highly light transmitting material with has a screw thread base so that the metal lamp base can be screwed into the lamp shell 5 tightly. The electronic driver board 3 is mounted perpendicular to the interface board 4. The electricity supply to the electronic driver board is made via wires 9 to the screw lamp base 1 and the Live terminal 2. The interface board 4 has conduction traces and slots on it so that the lower part of LED modules 7 can be fitted into the slots and therefore the positioning of all LED modules can be firmly placed into the desired positions. Electrical conduction traces on LED modules 7 and the interface board 4 can be soldered together at the junction of the LED modules and the interface board. Similar connection is made for the connectivity between the Electronic driver board 3 and the interface board 4. Electricity supply which is generated from the electronic driver board 3 can now flow from the electronic driver board 3 through the interface board 4 to the LED modules 7. The LED modules board 7 is an aluminum circuit board which can be bended and have LED chips mounted on the upper surface of the them. The LED modules can be bended to the required angle and shape so that wide light beam angle can be achieved. The upper outer lamp shell 8 can be joined to the lower outer lamp shell 5 by glue or by ultrasonic weld.

[0021] As shown in FIGS. 3(a), 3(b) and 4, 3 to 6 pieces of the LED modules shall be used for a bulb. The number of LED module used would depend on what light intensity needs to be achieved. An interface board has electrical conduction traces and is used to connect all the LED modules and the electronic driver board together, so that the electricity from the driver board can be distributed to all the LED modules easily. The interface is also serves to hold all LED modules in the correct position. If a larger size bulb is made and the interface board can be bigger with more room, the electronic LED driver board can be integrated into the interface board to simplify the manufacturing process. The bulb shell is made by high light transparent material in a bulb shape. Ventilation holes are located at the lower bottom of the bulb, near the bulb screw base. Ventilation holes are not needed for bulbs with power consumption of 5 W or less. The electronic driver board has an electronic circuit which is connected to the metal bulb base, which supplies the main AC voltage which is required to provide the required DC voltage to the LED modules.