CN102313217A

CN102313217A - Interior lighting device

Info

Publication number: CN102313217A
Application number: CN2010102126792A
Authority: CN
Inventors: 石汝军; 赵将玺; 韩娜; 张青青; 郭怀鹏; 郑晓华
Original assignee: ZIBO GAOXIN DISTRICT LIANCHUANG TECHNOLOGY SERVICE CENTER
Current assignee: ZIBO GAOXIN DISTRICT LIANCHUANG TECHNOLOGY SERVICE CENTER
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2012-01-11

Abstract

The invention discloses an interior lighting device which comprises at least one shade with a light-emitting window, at least one lighting bin accommodated in the shade and used for lighting an object, a light source, an optical device and a central power supply module. The interior lighting device is characterized in that the lighting bin comprises one group of lighting units, each lighting unit comprises at least one LED chip and an optical system cooperated with the chip, and the LED chips and the optical systems respectively form the light source and the optical device. In the lighting device, light generated by the light source can be more effectively utilized.

Description

Room light equipment

Technical field

The present invention relates to a kind of room light equipment.

Background technology

Room light equipment is the common equipment of automobile, and it comprises a cover with light emitting window usually, and the illumination cabin that is used for illuminated objects that at least one is accommodated in the above-mentioned cover also comprises light source and Optical devices and centre feed module.Wherein, first illumination cabin is designed to throw light on and is stretched over from lighting apparatus corner far away.Second illumination cabin is designed to throw light on from the nearer position of lighting apparatus.The light source of lighting apparatus can be controlled to each other independently, thereby carries out optimal illumination.In known lighting apparatus, all there is a tubular discharge lamp and the reflector as Optical devices as light source in each illumination cabin.A shortcoming of this lighting apparatus is, is difficult to gather into a branch of from the light of light source.Often be mapped to outside the illuminated object more than 50% in the reality.

Summary of the invention

The purpose of this invention is to provide a kind of hereinafter described lighting apparatus, the light that in this lighting apparatus, is produced by light source has obtained more effectively utilizing.

According to the present invention; Be characterised in that for reaching this purpose lighting apparatus; The illumination cabin comprises one group of (for example several) lighting unit, and each lighting unit comprises the optical system of a led chip and and chip collaborative work at least, and above-mentioned led chip and optical system are respectively as light source and Optical devices; Each led chip provides the luminous flux of 51m at least during the lighting unit each several part of illuminated objects during operation simultaneously, and work.

Led chip comprises an active layer that is formed by semi-conducting material such as AlInGaP or InGaN, and it is luminous when electric current flows through.The integrated component that is made up of led chip and primary optical system is exactly the LEDs (light emitting diode) that is widely known by the people, and is also referred to as the LED lamp.The surface area ratio of led chip active layer is less, for example at the order of magnitude of ten/several mm2 to several mm2.Therefore, a led chip can constitute an extraordinary spot light of approximation, thereby can be easier to and be pooled a branch of more exactly by the light that its produces.Because a plurality of led chip gang illuminated objects; Each independently light beam only beat certain part at object; This bundle light maybe be very narrow, and the border that therefore can they be aligned in object with high accuracy is with interior and have only the light of only a few to be mapped to beyond the object.Each provides the led chip of 51m luminous flux just can form according to lighting apparatus of the present invention at least to use duration of work; Although the quantity of its lighting unit is comparatively limited, the possibility of extensive use is provided, for example can be used for street lighting; Spotlighting, or floodlighting.Control through luminous flux in the illumination cabin or the control through each discrete illuminated unit in the illumination cabin can distribute to light neatly and adjust.

If be sought after, thereby the illuminated each several part of object can cover each other and obtains a more uniform illuminating effect, like illuminance or brightness.In order to obtain even light distribution, hope that also illuminated each several part can cover each other.

The wide part that produces when led chip is at about 520nm during to the wave-length coverage of about 600nm, and it is comparatively suitable to use in the very unimportant occasion of color rendering in the highest flight in light transmittance efficiency, front row and back seat in the compartment that for example is used to throw light on.For example, in this occasion, can use and contain AlInGaP active layer, emission peak led chip at 592nm.On the contrary; In color rendering occasion in the highest flight; Like family expenses motor bus space illumination etc.; Can use the combination of the led chip of red-emitting, green glow and blue light, the wave-length coverage that for example has AlInGaP active layer, emission is that the led chip of 590-630nm and the wave-length coverage with InGaN active layer, emission are the led chip of 520-565nm and 430-490nm.The active layer of the led chip of red-emitting, green glow, blue light can be made on the same substrate, substrate made from sapphire or carborundum for example, and these led chips can use same optical system.Perhaps, for example can also use a kind of like this lighting unit, its inner led chip emission UV light radiation, the optical system of this lighting unit contains a device that the UV light radiation is changed into visible radiation simultaneously.The device that is used to change the UV light radiation can be formed by for example luminescent layer that is made on the led chip.

According to the present invention, an attractive lighting apparatus embodiment is characterised in that this group lighting unit comprises two types or the more lighting unit of kind, and purpose is the each several part with mutual different spectrum illuminated objects.The optical characteristics (like reflectivity) that the spectrum of lighting unit can be adjusted to the object each several part adapts, thereby realizes the best visibility of these parts.In addition, different spectrum can also make the observer be easy to confirm the direction of oneself.

Put case according to a reasonable implementation of lighting apparatus of the present invention and be characterised in that, this group lighting unit comprises two types or the more lighting unit of kind, superpowerly widens or inferiorly forces wide light beam to produce.In this embodiment; The illuminated each several part of object can have and is close to the same surface area and intimate the same illuminance, and this is to be then to be to use inferiorly to force wide light beam and throw light on the part quite far away that the superpower light beam of widening throws light on because object leaves the nearer part of lighting apparatus.This becomes the work that is divided into a plurality of zones of being thrown light on by the specific illumination unit to the surface of illuminated object and is more prone to.

The optical system of lighting unit comprises, for example, and reflecting element, refracting element, and/or diffraction element.According to the present invention; A practical embodiment of lighting apparatus is characterised in that; The optical system of lighting unit comprises a primary optical system and a secondary optical system; Above-mentioned primary optical system is furnished with a reflector, a led chip is housed on the reflector and has a for example hemispheric translucent cover, and led chip just is embedded in this cover; Above-mentioned secondary optical system is furnished with the reflector of a secondary for example taper, and led chip is installed in the narrower end of this reflector.If secondary reflector supports lens at its end relative with narrow end, and is then comparatively favourable for the generation than arrow beam of light.

Description of drawings

Fig. 1 is the structural representation of LED lighting apparatus in a kind of car.Wherein, 1 is the centre feed module, and 2 is the LED lighting unit.

The specific embodiment

A kind of room light equipment; Comprise that at least one has the cover of light emitting window; At least one is accommodated in the above-mentioned cover, is used for the illumination cabin of illuminated objects, also comprises light source and Optical devices and centre feed module 1, and the illumination cabin comprises one group of lighting unit 2; Each lighting unit comprises the optical system of at least one led chip and and chip collaborative work, and above-mentioned led chip and optical system constitute light source and Optical devices respectively.In this lighting apparatus, the light that is produced by light source can more effectively be utilized.

An attractive embodiment is characterised in that; The optical system of lighting unit comprises a transparent body; This transparent body has first optics; Light deflection and second optics that these parts send led chip through refraction, the light deflection that these parts produce led chip through reflection.

A reasonable improved form of above-mentioned embodiment is characterised in that; The transparent body has a wide end and one and the corresponding narrow end parts of wide end; Led chip just is embedded in a narrower end; Led chip is installed on the reflector away from a side of the wide end of the transparent body simultaneously, and the above-mentioned transparent body has a spherical part that with respect to axle, is positioned in the center, and this part is recessed in the wide end and forms first optics; The transparent body has a marginal portion around axle simultaneously, and this part has a parabolic disc and forms second optics around axle.

Lighting unit can be equipped with a device that is used to adjust predetermined beam direction.Like this, the light of lighting apparatus is distributed in the manufacture process and just has been adjusted to and service condition, and for example the width on road surface and the interval that is equipped with the electric pole of lighting apparatus in street lighting adapt.

A rational embodiment is characterised in that the part of different lighting unit optical systems forms an integral body.This has simplified the operation of assembling lighting apparatus.According to purposes, the light deflection that above-mentioned part can make led chip produce narrows down, and/or light beam is separated.In an improved form of this embodiment, each part of the optical system that becomes one is the ridge design on the transparent panel in the emitter window.This decorative pattern is preferably formed by the oncus that becomes the mirror image symmetry substantially.Such decorative pattern can form from incident beam and depart from strong, the few two-beam of veiling glare.

In a reasonable improved form of above-mentioned embodiment, lighting unit is lined up the many row that stretch along the longitudinal axis.The parallel basically and traversed by longitudinal axis with the optical axis of lighting unit in the delegation; The optical axis of lighting unit then surrounds an angle around another root axle parallel with the longitudinal axis to each other at every turn on the different rows; The part that becomes one forms off-beams from the light beam that lighting unit produces, these light beams are symmetrically distributed with respect to the plane through lighting unit optical axis and another root axle substantially.Since the difference that each row is directed and each angle of around the longitudinal axis, producing and since other lighting unit and each angle of producing at transversal said another root axle and said optical axis place can cover out one bigger with illuminated area.In any case, this lighting apparatus has comparatively simple comparatively speaking structure.Lighting unit aligned and make with the lighting unit in the delegation has identical direction, and this arrangement has provided the layout of a simple lighting unit.

Claims

1. room light equipment; Comprise that at least one has the cover of light emitting window, at least one is accommodated in the above-mentioned cover, is used for the illumination cabin of illuminated objects, also comprises light source and Optical devices and centre feed module; It is characterized in that; The illumination cabin comprises one group of lighting unit, and each lighting unit comprises the optical system of at least one led chip and and chip collaborative work, and above-mentioned led chip and optical system constitute light source and Optical devices respectively; The each several part of lighting unit illuminated objects during operation simultaneously, and each led chip provides the luminous flux of 51m at least during operation.

2. according to the desired room light equipment of claim 1, it is characterized in that this group lighting unit comprises two types or the more lighting unit of kind, to produce the superpower inferior wide light beam of forcing that reaches.

3. according to claim 1 or 2 desired room light equipment; It is characterized in that; The optical system of lighting unit comprises a primary optical system and a secondary optical system, and above-mentioned primary optical system is furnished with a reflector and a translucent cover of pacifying led chip on it, and led chip is embedded in the translucent cover; Above-mentioned secondary optical system is furnished with a secondary reflector, and led chip is positioned in the narrower end of this reflector.

4. according to the desired room light equipment of claim 3, it is characterized in that secondary reflector is supporting lens at itself and the corresponding end of narrow end portion.

5. according to claim 1 or 2 desired room light equipment; It is characterized in that; The optical system of lighting unit comprises a transparent body; The light deflection that first optics that this transparent body has produces led chip through refraction, the light deflection that its second optics that has produces led chip through reflection.

6. according to the desired room light equipment of claim 5; It is characterized in that the transparent body has a wide end and one and the corresponding narrower end of wide end, led chip is embedded in narrower end; Led chip is installed on the reflector away from a side of the transparent body simultaneously; The above-mentioned transparent body has a spherical part, and this part is placed on the center with respect to axle and is recessed in the wide end and forms first optics, and the transparent body has a marginal portion around axle simultaneously; This part has a parabolic disc around axle, and forms second optics.