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An illuminating device

A lighting device and light source technology, which is applied to lighting devices, fixed lighting devices, components of lighting devices, etc., can solve the problems of limited and short duration of afterglow action, reduce heat transfer or heat conduction, and prolong the duration of the afterglow. time, the effect of minimizing heat transfer or heat conduction

Inactive Publication Date: 2009-11-11
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, a problem or disadvantage of the lighting devices described above lies in the fact that after the lighting device has been switched off or extinguished the duration of the afterglow effect is limited and for some applications the duration is even too short

Method used

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Embodiment Construction

[0023] FIG. 1(A) shows a light source in a three-dimensional view in the form of a conventional halogen base lamp, which is suitable, for example, for a vehicle headlamp unit. The lamp comprises a bulb 5 and a lamp socket 6 for inserting the lamp into a corresponding holder or reflector unit, wherein the lamp socket 6 usually includes two or three contacts 7 for connecting the lamp to a power source electrical contact.

[0024] Alternatively, discharge lamps and / or light emitting diodes (LEDs) or another light source as described above may also be used, also in combination with at least one halogen lamp.

[0025] Furthermore, FIG. 1(A) shows a first embodiment of a carrier 1 in the form of a cylindrical ring 11 which surrounds the bulb 5 in the region of the socket 6 adjoining it. The carrier 1 is provided with an afterglow material, for example a luminescent pigment, which is applied at least to the outer surface of the carrier 1 .

[0026] Figure 1(B) shows the carrier 1 i...

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Abstract

An illuminating device is disclosed which comprises a light source (5) for generating light and an after-glowing material (for example a luminescent pigment), especially for emitting light after the light source is switched off or has extinguished. The after-glowing material is applied onto a carrier (1), which has a predetermined thermal isolation from the light source (5). By this, the duration of the after-glowing can be extended.

Description

technical field [0001] The present invention relates to a lighting device comprising a light source for generating light and an afterglow material provided for emitting light after the light source is switched off or extinguished. Background technique [0002] Lighting devices comprising afterglow materials are known. They are especially applied in so-called luminous signs for advertising purposes, eg in shops, hotels, airports etc., or for other purposes. They can also be used in way plates as "exit" signs, in billboards, traffic lights, systems for directing traffic flow and as (eg, dashboard) lights in vehicles. They are also used in automotive lights. These and other lighting devices are used as interior and exterior lights. [0003] From WO 2004 / 034358 is known a lighting device comprising a lighting device and a light emitter with an afterglow material for emitting light after the lighting device is switched off or extinguished. The light emitter includes a predete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K2/00G09F13/20F21V3/04F21V9/16H01K1/32F21S8/10
CPCF21V9/16F21V29/004F21V15/06F21V13/08F21V29/15F21V29/74F21V9/32
Inventor J·弗莱克西格C·M·里德尔L·卡塞伯格
Owner KONINK PHILIPS ELECTRONICS NV