IPC分类号：
F21V3/00 | F21S10/06 | F21V13/06 | F21V14/04 | F21V14/06 | F21Y115/10
国民经济行业分类号：
C4350 | C3874 | C4090 | C3879
当前申请(专利权)人：
PUDSEY DIAMOND ENGINEERING LTD
原始申请(专利权)人：
PUDSEY DIAMOND ENGINEERING LTD
当前申请(专利权)人地址：
Mitchell Close West Portway Industrial Estate, Andover, Hampshire SP10 3TJ, GB
摘要：
The object of the present invention is to provide a light source (101) for a luminaire or lantern, the light source (101) comprising: at least one light emitting diode (LED), a mantle structure (112) with which the LED (101) is fast within the mantle structure (112), the mantle structure (112) being both transparent or at least translucent and arranged to intercept and re-distribute light from the LED and, an optical element (117) in the mantle structure (112) for biasing light from the LED (101) away from a direction in which illumination is unwanted or at least is wanted at reduced intensity. The optical element (117) is angularly adjustable such tha the light emitted may be directed.
技术问题语段：
The technical problem addressed in this patent is to provide an improved light source for a luminaire or lantern. The invention aims to overcome the issue of traditional light sources creating pools of light beneath them, and to provide an angularly adjustable support for the optical element to redirect light in desired directions. The invention also includes a reflector or optical element to bias light from the LED away from unwanted or bright areas, and a collar with spring detents for reciprocal communication with the optical element. The invention provides a light source that can be adjusted for different lighting needs and can be used in both traditional and new applications.
技术功效语段：
The present invention aims to enhance the performance of a luminaire light source.
权利要求：
1. A light source (101) for a luminaire or lantern, the light source comprising: ● an LED chip unit (102) mounted on a PCB (103), ● a mantle structure (112) having an integral collar (114) with a series of lips (115), wherein the mantle structure has multiple apertures to assist further light redistribution, and wherein: ● the mantle structure is transparent or at least translucent, ● the mantle structure is arranged to intercept and re-distribute light from the LED, and ● the collar has a pair of spring detents (116), ● at least one optical element (117) in the mantle structure for biasing light from the LED away from a direction in which illumination is unwanted or at least is wanted at reduced intensity, and ● an LED base (104) upon which the LED chip unit and mantle structure are fast, wherein the lips (115) hold the mantle to a rim (109) of the LED base (104) the rim (109) of the base having a circularly arranged set of depressions (110) for reciprocal communication with the spring detents, whereby the mantle structure is an angularly adjustable support for the optical element.
2. A light source for a luminaire or lantern as claimed in claim 1, wherein the optical element is angularly adjustable.
3. A light source for a luminaire or lantern as claimed in claim 1 or claim 2, wherein the optical element is any one of: ● a reflector, ● a prismatic device, or ● a light shield.
4. A light source for a luminaire or lantern as claimed in claim 1 or claim 2 or claim 3 wherein there is provided a central screw fixing the optical element within the mantle.
5. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the optical element is configurable to: ● reduce light intensity in one direction, ● disperse light generally through other directions, or ● concentrate light in one or more specific directions.
6. A light source for a luminaire or lantern as claimed in any preceding claim, wherein more than one optical element and/or light source is provided per luminaire.
7. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the optical element for directing sideways light is generally parabolic.
8. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the angularly adjustable support and/or mantle are adjustably arranged on to a heatsink or base therefor, upon which the LED(s) and its/their PCB are carried.
9. A light source for a luminaire or lantern as claimed in claim 8, wherein respective heat sinks are provided for the light sources where there is more than one light source.
10. A light source for a luminaire or lantern as claimed in claim 8 or claim 9, wherein the support is clipped onto the heatsink base and provided with sprung detents for preserving the adjustment.
11. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the mantle structure is mounted in use to extend down or up from the support.
12. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the LED has a phosphor coating and/or a lens for focusing the light in a particular direction.
13. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the optical element is arranged at the bottom of the mantle structure to spread downwards light to reduce intensity of illumination immediately below the light source, and/or the or another reflector can be arranged to one side of the mantle structure to reduce sideways or other direction of illumination.
14. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the mantle is generally paraboloid in shape.
15. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the optical element is polymeric with a reflective or metallic coating.