360-degree Projection LED Bulb Structure

• US 20140168977A1
• Filed: 12/17/2012
• Published: 06/19/2014
• Est. Priority Date: 12/17/2012
• Status: Active Grant

• Current Assignee: Wen-Sung Hu
• Original Assignee: Wen-Sung Hu
• Inventors: Hu, Wen-Sung
• Granted Patent: US 8,928,211 B2
• Time in Patent Office: Days
• US Class Current: 362/249.02
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21Y 2107/20 on convex supports or substrates, e.g. on the outer surface of spheres
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A 360-degree projection LED bulb includes a bulb holder, a transparent bulb seat, a transparent bulb shell, an upper luminosity module, a heat dissipating seat, and a plurality of sidelight luminosity modules. The upper luminosity module includes upper LEDs supported within an upper end of the transparent bulb seat and can be driven to project light beams towards the transparent bulb shell. The heat dissipating seat is engaged on a lower end face of an upper LED substrate of the upper luminosity module and includes side walls formed as an annular polygon. Each sidelight luminosity module is mounted on an associated side wall and includes a lateral LED substrate and at least one lateral LED disposed on the lateral LED substrate. Each lateral LED can be driven to radiate horizontally and downward via the transparent bulb seat. As such, the LED bulb realizes wide-angle radiation effect and superior cooling effect.

Claims

1. A 360-degree projection LED bulb structure comprising, in combination:

a bulb holder;

a transparent bulb seat including a lower end engaged to the bulb holder, with the transparent bulb seat further including a top opening formed in an upper end of the transparent bulb seat;

a transparent bulb shell engaged with the upper end of the transparent bulb seat and closing the top opening of the transparent bulb seat, with the transparent bulb seat and the transparent bulb shell together defining a chamber therein, with an actuator mounted in the chamber;

a heat dissipating seat mounted in the chamber and including an upper portion, a lower portion, and a plurality of side walls located between the upper and lower portions, with the plurality of side walls adjoining each other to form an annular polygon; and

a plurality of sidelight luminosity modules each mounted on an outer surface of one of the side walls of the heat dissipating seat, with each of the sidelight luminosity modules including a lateral LED substrate and at least one lateral LED disposed on an outer face of the lateral LED substrate, with each of the sidelight luminosity modules electrically connected to the actuator so that the lateral LED can be driven to radiate horizontally and downward via the transparent bulb seat.

2. The LED bulb structure according to claim 1, further comprising:

an upper luminosity module mounted in the chamber and including an upper LED substrate suspended and supported within the upper end of the transparent bulb seat, with the upper LED substrate including an upper end face facing the transparent bulb shell and a lower end face facing the bulb holder, with at least one upper LED disposed on the upper end face of the upper LED substrate, with the upper luminosity module electrically connected to the actuator so that the at least one upper LED of the upper luminosity module can be driven to project light beams towards the transparent bulb shell, with the heat dissipating seat engaged on the lower end face of the upper LED substrate.

3. The LED bulb structure according to claim 2, with a conductive substrate mounted on a bottom face of the lower portion of the heat dissipating seat, with the conductive substrate electrically connected to the actuator, the at least one upper LED of the upper luminosity module, and the lateral LEDs of the sidelight luminosity modules through conductive filaments, with an annular ledge formed on an inner wall of the upper end of transparent bulb seat, with the upper LED substrate or the upper portion of the heat dissipating seat mounted on the ledge.

4. The LED bulb structure according to claim 3, with the heat dissipating seat being in the form of one of a solid body, tank-shaped body, and a polygonal hollow tube.

5. The LED bulb structure according to claim 4, with the upper LED substrate including a plurality of ventilation holes extending from the upper end face through the lower end face of the upper LED substrate, with the conductive substrate including a plurality of ventilation holes for cooling, with each lateral LED substrate provided with a conductive welding position at each of two sides thereof to allow circuits of the sidelight luminosity modules to be electrically connected to each other.

6. The LED bulb structure according to claim 5, with the actuator mounted in the lower end of the transparent bulb seat, with a conductive plate provided on an upper end face of the actuator, with the upper portion of the heat dissipating seat formed with a planar fixing base and including a plurality of fixing holes.

7. The LED bulb structure according to claim 5, with the actuator mounted on the lower end face of the upper LED substrate and built-in the heat dissipating seat.

8. The LED bulb structure according to claim 3, with the heat dissipating seat being a hollow tank-shaped body manufactured with a high thermal conductive material and provided with cooling fins therein, with the upper portion of the heat dissipating seat formed with a planar fixing base and including a plurality of fixing holes so that the upper portion of the heat dissipating seat can be fixed to the lower surface of the upper LED substrate by extending a fastener through each of the fixing holes.

9. The LED bulb structure according to claim 8, with each of the side walls of the heat dissipating seat including an upper section formed as a straight-lateral planar wall and a lower section formed as an oblique-lateral planar wall.

10. The LED bulb structure according to claim 8, with each of the side walls of the heat dissipating seat being a straight-lateral planar wall.