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 reduced lighting between the luminaire and other lights in the area, creating pools of light beneath it. The solution involves an improved optical element that can be adjusted in its position to direct light in a specific direction or at reduced intensity. The patent describes the use of an angularly adjustable support for the optical element, which can be adjusted to avoid dazzling or pooling of light. The invention can be used in a single light source or multiple light sources per luminaire.
技术功效语段：
The present invention relates to an improved light source for a luminaire or lantern. The light source includes a LED and a transparent or translucent structure that fasts the LED and intercepts and re-distributes its light. The optical element in the structure can be adjusted to direct the light in a specific direction or to reduce its intensity in a specific direction. The invention provides an improved light source that can create pools of light beneath the luminaire or lantern and avoid dazzling or pooling of light above it. The light source can be adjusted to direct the light in different directions and can be used in a variety of applications.
权利要求：
CLAIMS:
1. A light source for a luminaire or lantern, the light source comprising:
• at least one light emitting diode (LED),
• a mantle structure with which the LED is fast within the mantle structure, the mantle structure being:
• transparent or at least translucent and
• arranged to intercept and re-distribute light from the LED and
• an optical element 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.
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 mantle structure is an angularly adjustable support for the optical element.
6. 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.
7. 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.
8. 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.
9. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the angularly adjustable support and/or mantle are adjustable arranged on to a heatsink or base therefor, upon which the LED(s) and its/their PCB are carried
10. A light source for a luminaire or lantern as claimed in claim 9, wherein respective heat sinks are provided for the light sources where there is more than one light source.
11. A light source for a luminaire or lantern as claimed in claim 9 or claim 10, wherein the support is clipped onto the heatsink base and provided with sprung detents for preserving the adjustment.
12. 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 a support.
13. 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.
14. 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
15. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the mantle is generally paraboloid in shape.
16. A light source for a luminaire or lantern as claimed in any preceding claim, wherein the optical element is polymeric with a reflective coating, or metallic.