Tube-type or channel-type LED lighting apparatus

• US 8,177,391 B2
• Filed: 03/31/2010
• Issued: 05/15/2012
• Est. Priority Date: 03/31/2009
• Status: Expired due to Fees

• Current Assignee: Seoul Semiconductor Co., Ltd.
• Original Assignee: Seoul Semiconductor Co., Ltd.
• Inventors: Ryu, Seung Ryeol, Bae, Sang Geun, Hong, Seung Sik, Park, Kwang Ii
• Primary Examiner(s): Ton, Anabel
• Application Number:
  US12/751,571
• Publication Number:
  US 20100265693A1
• Time in Patent Office: 776 Days
• Field of Search: 362/249.02, 362/249.11, 362/310, 362/311.02, 362/311.06, 362/326, 362/340
• US Class Current: 362/249.02
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2103/30 curved
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/20 Electroluminescent [EL] light sources

Abstract

A light emitting diode (LED) lighting apparatus that may be used as interior lighting or advertisement lighting is disclosed. The LED lighting apparatus includes a channel-type or tube-type optical housing with a light emission surface and an LED array arranged in the optical housing. The light emission surface includes a valley line and a first inner ridge and a second inner ridge disposed on opposing sides of the valley line, and the LED array includes a plurality of LEDs whose centers are arranged along the valley line.

Claims

1. A light emitting diode (LED) lighting apparatus, comprising:

an optical housing comprising a light emission surface, the optical housing being either a channel-type optical housing or a tube-type optical housing; and

an LED array arranged in the optical housing,

wherein the light emission surface comprises a valley line, a first inner ridge, and a second inner ridge, the first inner ridge and the second inner ridge being disposed on opposing sides of the valley line, and the LED array comprises a plurality of LEDs arranged so that a center of each LED is arranged along the valley line, and

wherein an internal space of the optical housing is filled with a gas or a light-transmissive material, at least a portion of the optical housing being light-transmissive.

2. The LED lighting apparatus of claim 1, wherein the shapes of the first inner ridge and the second inner ridge comprise convex curves that are symmetric to each other with respect to the valley line.

3. The LED lighting apparatus of claim 2, wherein the light emission surface further comprises:

a first outer ridge; and

a second outer ridge,

wherein the first outer ridge and the second outer ridge face the first inner ridge and the second inner ridge, respectively, and the shapes of the first outer ridge and the second outer ridge comprise convex curves.

4. The LED lighting apparatus of claim 1, wherein the shapes of the first inner ridge and the second inner ridge comprise slanted flat surfaces that are symmetric to each other with respect to the valley line.

5. The LED lighting apparatus of claim 4, wherein the light emission surface further comprises:

a first outer ridge; and

a second outer ridge,

wherein the first outer ridge and the second outer ridge face the first inner ridge and the second inner ridge, respectively, and the shapes of the first outer ridge and the second outer ridge comprise convex curves.

6. The LED lighting apparatus of claim 1, wherein the optical housing is the tube-type optical housing, and the tube-type optical housing comprises:

an integral-type tube or an assembling-type tube filled with the gas or the light-transmissive material.

7. The LED lighting apparatus of claim 1, wherein the optical housing is the channel-type optical housing, and the channel-type optical housing comprises:

a channel member comprising side walls and a bottom, the LED array being arranged on the bottom of the channel member; and

a light-transmissive optical member covering at least a front surface of the channel member to form the light emission surface.

8. The LED lighting apparatus of claim 1, further comprising:

a light-transmissive molding portion covering the LEDs individually or entirely, wherein the molding portion comprises a phosphor.

9. The LED lighting apparatus of claim 1, further comprising:

a light-transmissive molding portion covering the LEDs individually or entirely, wherein a phosphor is disposed on a surface of the light-transmissive molding portion.

10. The LED lighting apparatus of claim 1, further comprising a phosphor disposed on the light emission surface.

11. The LED lighting apparatus of claim 1, wherein the optical housing is the channel-type optical housing, and the channel-type optical housing further comprises:

a channel member comprising side walls and a bottom, the LED array being arranged on the bottom of the channel member; and

a light-transmissive optical member covering at least a front surface of the channel member to form the light emission surface,

wherein a phosphor is disposed on the light-transmissive optical member.

12. The LED lighting apparatus of claim 1, wherein each of the LEDs comprises an LED package or a bare LED chip disposed on a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

13. The LED lighting apparatus of claim 1, wherein the LED array further comprises a printed circuit board (PCB) or a flexible printed circuit board (FPCB), the plurality of LEDs being disposed on the PCB or FPCB, and the plurality of LEDs being electrically connected by the PCB or FPCB.

14. The LED lighting apparatus of claim 1, wherein the LED array comprises wires electrically connecting the plurality of LEDs.

15. A light emitting diode (LED) lighting apparatus, comprising:

an optical housing comprising a light emission surface, the optical housing being either a channel-type optical housing or a tube-type optical housing; and

an LED array arranged in the optical housing,

wherein the light emission surface comprises a valley line, a first inner ridge, and a second inner ridge, the first inner ridge and the second inner ridge being disposed on opposing sides of the valley line, and the LED array comprises a plurality of LEDs arranged so that a center of each LED is arranged along the valley line, and

wherein the shapes of the first inner ridge and the second inner ridge comprise slanted flat surfaces that are symmetric to each other with respect to the valley line.

16. The LED lighting apparatus of claim 15, wherein the light emission surface further comprises:

a first outer ridge; and

a second outer ridge,

wherein the first outer ridge and the second outer ridge face the first inner ridge and the second inner ridge, respectively, and the shapes of the first outer ridge and the second outer ridge comprise convex curves.

17. A light emitting diode (LED) lighting apparatus, comprising:

an optical housing comprising a light emission surface, the optical housing being either a channel-type optical housing or a tube-type optical housing; and

an LED array arranged in the optical housing,

wherein the light emission surface comprises a valley line, a first inner ridge, and a second inner ridge, the first inner ridge and the second inner ridge being disposed on opposing sides of the valley line, and the LED array comprises a plurality of LEDs arranged so that a center of each LED is arranged along the valley line, and

wherein the optical housing is the channel-type optical housing, and the channel-type optical housing further comprises;

a channel member comprising side walls and a bottom, the LED array being arranged on the bottom of the channel member; and

a light-transmissive optical member covering at least a front surface of the channel member to form the light emission surface, a phosphor being disposed on the light-transmissive optical member.