Led lighting apparatus

Patent metadata

Field	Value
Publication number	US-2016258609-A1
Application number	US-201615052374-A
Country	US
Kind code	A1
Filing date	Feb 24, 2016
Priority date	Mar 2, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

An LED lighting apparatus includes an LED light-emitting unit, a radar detector, a controller, and a translucent cover. The LED light-emitting unit has a plurality of LED chips. The radar detector transmits radio waves, receives radio waves reflected by an object, and detects a movement of the object based on a change in a wavelength of the received radio waves. The controller controls light emission of the LED light-emitting unit based on a result of the detection by the radar detector. The translucent cover covers the LED light-emitting unit in a main emission direction in which a center of the light emitted from the LED light-emitting unit travels, and allows light from the LED light-emitting unit and the radio waves from the radar detector to pass through. The radar detector is surrounded by the LED light-emitting unit in the main emission direction.

First claim

1 . An LED lighting apparatus comprising:
an LED light-emitting unit having a plurality of LED chips; a radar detector configured to transmit radio waves, receive radio waves reflected by an object, and detect a movement of the object based on a change in a wavelength of the received radio waves; a controller configured to control light emission of the LED light-emitting unit based on a result of the detection by the radar detector; and a translucent cover that covers the LED light-emitting unit in a main emission direction in which a center of the light emitted from the LED light-emitting unit travels, the translucent cover allowing light from the LED light-emitting unit and the radio waves from the radar detector to pass through, wherein the radar detector is surrounded by the LED light-emitting unit as viewed in the main emission direction.

2 . The LED lighting apparatus according to claim 1 , wherein the translucent cover allows the light from the LED light-emitting unit to diffuse as the light passes through the translucent cover.

3 . The LED lighting apparatus according to claim 2 , wherein the translucent cover is made of one of resin or glass.

4 . The LED lighting apparatus according to claim 1 , further comprising a radar switching unit that includes the radar detector and a switch that is switched based on a result of the detection by the radar detector.

5 . The LED lighting apparatus according to claim 4 , further comprising a power unit configured to supply electric power to the LED light-emitting unit.

6 . The LED lighting apparatus according to claim 5 , wherein the radar switching unit is electrically interposed between the power unit and the LED light-emitting unit.

7 . The LED lighting apparatus according to claim 6 , wherein the LED light-emitting unit has an LED substrate that supports the plurality of LED chips.

8 . The LED lighting apparatus according to claim 7 , wherein the LED substrate is annular as viewed in the main emission direction.

9 . The LED lighting apparatus according to claim 7 , wherein the LED light-emitting unit includes a plurality of LED modules each having the LED chips, the translucent resin that covers the LED chips and mount terminals.

10 . The LED lighting apparatus according to claim 7 , wherein the radar switching unit has a sensor substrate on which the radar detector is mounted, and a main substrate on which the switch is mounted.

11 . The LED lighting apparatus according to claim 10 , wherein the sensor substrate is arranged more forward than the main substrate in the main emission direction.

12 . The LED lighting apparatus according to claim 11 , wherein the main substrate and the sensor substrate overlap with each other as viewed in the main emission direction.

13 . The LED lighting apparatus according to claim 12 , wherein the sensor substrate is positioned more forward than the LED substrate in the main emission direction.

14 . The LED lighting apparatus according to claim 13 , wherein the sensor substrate is arranged in a position that avoids a light distribution angle that is a direction in which light of half a forward luminous intensity of each of the LED chips is emitted.

15 . The LED lighting apparatus according to claim 13 , wherein the main substrate is positioned more backward than the LED substrate in the main emission direction.

16 . The LED lighting apparatus according to claim 12 , wherein the sensor substrate and the LED substrate are integrated into a single substrate.

17 . The LED lighting apparatus according to claim 7 , further comprising:
a case that supports the LED light-emitting unit, the translucent cover, and the power unit; and a base fixed to the case and attachable to a feeding unit.

18 . The LED lighting apparatus according to claim 17 , wherein the base is configured to be attached to or detached from the feeding unit by rotation of the base relative to the feeding unit.

19 . The LED lighting apparatus according to claim 18 , wherein the base includes a pair of pins that are spaced apart from each other in a radial direction that is perpendicular to the main emission direction.

20 . The LED lighting apparatus according to claim 19 , wherein the radar detector is sandwiched between the pair of pins in the main emission direction.

21 . The LED lighting apparatus according to claim 20 , wherein the radar switching unit is sandwiched between the pair of pins in the main emission direction.

22 . The LED lighting apparatus according to claim 20 , wherein the LED substrate overlaps with the pair of pins as viewed in the main emission direction.

23 . The LED lighting apparatus according to claim 19 , wherein the base includes a projection arranged between the pair of pins and protruding backward in the main emission direction.

24 . The LED lighting apparatus according to claim 23 , wherein the protrusion houses the power unit.

25 . The LED lighting apparatus according to claim 24 , wherein the power unit has a portion positioned more backward than the pair of pins in the main emission direction.

26 . The LED lighting apparatus according to claim 6 , further comprising a case for supporting the LED light-emitting unit, the translucent cover and the power unit, wherein the case has a bottomed tubular shape and is formed with an opening, and the translucent cover covers the opening.

27 . The LED lighting apparatus according to claim 26 , wherein the case is made of metal.

28 . The LED lighting apparatus according to claim 26 , further comprising an LED unit that includes the LED light-emitting unit, the power unit and the radar switching unit.

29 . The LED lighting apparatus according to claim 28 , wherein the LED unit includes a heat dissipater to which the LED light-emitting unit is attached.

30 . The LED lighting apparatus according to claim 29 , wherein the heat dissipater has a top plate portion and a tubular portion that extends from the top plate portion, and the LED light-emitting unit is attached to the top plate portion.

31 . The LED lighting apparatus according to claim 30 , wherein the tubular portion has an outer surface on which a plurality of fins are provided.

32 . The LED lighting apparatus according to claim 31 , wherein the power unit is housed in the tubular portion of the heat dissipater.

33 . The LED lighting apparatus according to claim 29 , wherein the LED unit has an inner cover, and the inner cover is attached to the heat dissipater and allows the light from the LED light-emitting unit to pass through.

34 . The LED lighting apparatus according to claim 33 , wherein the inner cover allows the light from the LED light-emitting unit to diffuse as the light passes through the inner cover.

35 . The LED lighting apparatus according to claim 34 , wherein the inner cover is made of one of resin or glass.

Assignees

• Rohm Co Ltd

Inventors

• Fujimoto Yoshifumi
• Shimizu Hirotaka
• Osawa Hideharu
• Yoneda Hiroki

Classifications

• H05B47/16

  by timing means · CPC title

• H05B45/00

  Circuit arrangements for operating light-emitting diodes [LED] · CPC title

• G01S13/56

  for presence detection {(presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26)} · CPC title

• F21Y2105/18

  annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title