CN201866571U

CN201866571U - A kind of LED lighting device

Info

Publication number: CN201866571U
Application number: CN2010205773944U
Authority: CN
Inventors: 宋义; 邹华德; 定毛山; 张俊锋
Original assignee: Shenzhen Diguang Electronics Co Ltd
Current assignee: DONGGUAN DIGUANG ELECTRONICS Co Ltd
Priority date: 2010-10-26
Filing date: 2010-10-26
Publication date: 2011-06-15
Anticipated expiration: 2020-10-26

Abstract

The utility model is suitable for a lighting field provides a LED lighting device, including lamp holder, lamp body and drive circuit, by be equipped with the base plate in the sealed space that lamp holder and lamp body constitute, the base plate openly carry with a plurality of LED light source that drive circuit is connected, be equipped with the leaded light lamp shade in the light-emitting direction of LED light source, the emergent face of leaded light lamp shade is equipped with the recess. The utility model discloses set up the leaded light lamp shade that has the recess above LED lighting device's LED light source, increased the angle of emergence of light, enlarged LED lighting device's irradiation range, make it can be applied to more occasions.

Description

A kind of LED lighting device

Technical field

The utility model belongs to lighting field, relates in particular to a kind of LED lighting device.

Background technology

LED is a kind of semiconductor solid luminescence device, be called as the 4th generation lighting source or green light source, have advantages such as energy-saving and environmental protection, the life-span is long, volume is little, can reach 6-10 ten thousand hours service life, longer more than 10 times than the conventional light source life-span, the electric light power conversion rate is near 100%, and is more energy-conservation more than 80% than conventional light source, becomes the alternative source of light of conventional incandescent.Figure 1 shows that the structural representation of existing LED light fixture, this LED light fixture comprises lamp holder 11, heat radiation lamp body 12, the substrate 14 that is loaded with led light source 13 and lampshade 15, and substrate 14 is fixed on the heat radiation lamp body 12.Led light source 13 energising backs are luminous, because the light angle of emergence of LED has certain limit, so the emergent ray of this LED lamp forms light belt one, can't realize omnibearing uniform three-dimensional illumination, limit the use of LED lamp, slowed down the replacement process of incandescent lamp greatly.

The utility model content

The purpose of this utility model is to provide a kind of LED lighting device, is intended to solve the little problem of traditional LED lamp lighting scope.

The utility model is to realize like this, a kind of LED lighting device, comprise lamp holder, lamp housing and drive circuit, be provided with substrate in the seal cavity that constitutes by described lamp holder and lamp housing, described substrate front side is loaded with several led light sources that are connected with described drive circuit, the light direction of described led light source is provided with the leaded light lampshade, and the exit facet of described leaded light lampshade is provided with groove.

As optimal technical scheme of the present utility model:

Described groove has the surface of inclination.

Described groove is V-arrangement planarea groove or V-arrangement arch groove.

The opening top of described groove is provided with lens.

Described lens are concavees lens, convex lens or planar lens.

The plane of incidence of described leaded light lampshade is the plane.

The exit facet of described leaded light lampshade is provided with concave-convex micro-structure.

Described substrate front side also is provided with the reflecting layer.

Described substrate back is provided with some led light sources.

Described drive circuit contains the bridge rectifier that promising described led light source provides DC voltage.

The utility model is provided with the leaded light lampshade of groove above LED LED illumination device light source, increased the angle of emergence of light, has enlarged the range of exposures of LED lighting device, makes it to be applied to more occasions, has quickened the replacement process of conventional incandescent.

Description of drawings

Fig. 1 is the structural representation of existing LED light fixture;

Fig. 2 is the structural representation of the LED lighting device that provides of the utility model first embodiment;

Fig. 3 is the structural representation of the leaded light lampshade of the LED lighting device that provides of the utility model

Fig. 4 is the light path principle figure of the LED lighting device that provides of the utility model first embodiment;

Fig. 5 is the plan structure schematic diagram of the leaded light lampshade that provides of the utility model first embodiment;

Fig. 6 is the structural representation of the LED lighting device that provides of second and third embodiment of the utility model;

Fig. 7 is the structural representation of the LED lighting device that provides of the utility model fourth, fifth embodiment;

Fig. 8 is the partial structurtes schematic diagram of the drive circuit that provides of the utility model the 6th embodiment.

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The utility model embodiment is provided with the leaded light lampshade that has groove above the light source of traditional LED light fixture, the angle of emergence of light is increased, and then has enlarged the range of exposures of LED lighting device.

The utility model embodiment provides a kind of LED lighting device, comprise lamp holder, lamp housing and drive circuit, be provided with substrate in the seal cavity that constitutes by lamp holder and lamp housing, substrate front side is loaded with several led light sources that are connected with drive circuit, the light direction of led light source is provided with the leaded light lampshade, and the exit facet of this leaded light lampshade is provided with groove.

The utility model embodiment is provided with the leaded light lampshade of groove above LED LED illumination device light source, increased the angle of emergence of light, has enlarged the range of exposures of LED lighting device, makes it to be applied to more occasions.

Below in conjunction with specific embodiment specific implementation of the present utility model is described in detail:

Embodiment one:

Fig. 2 shows the structural representation of the LED lighting device that the utility model first embodiment provides, Fig. 3 shows the light path principle figure of the LED lighting device that the utility model first embodiment provides, Fig. 4 shows the plan structure schematic diagram of the leaded light lampshade that the utility model first embodiment provides, for convenience of explanation, only show the part relevant with the utility model embodiment.

This LED lighting device comprises lamp holder 21 and lamp housing 25, lamp holder 21 and lamp housing 25 seamless links, form enclosure space, be provided with the substrate 22 that is loaded with some led light sources 23 in the lamp housing 25, led light source 23 is driven and luminous by drive circuit 26, and drive circuit 26 specifically can be connected with led light source 23 by lead 27.Present embodiment can be realized throwing light on a large scale in order to make this lighting device, the leaded light lampshade 24 of high transmission rate is set above led light source 23, and on the exit facet 242 of this leaded light lampshade 24 groove 243 is set.Please further in conjunction with the accompanying drawings 3, the light that led light source 23 sends is injected leaded light lampshade 24 through the plane of incidence 241, penetrate through exit facet 242, in the outgoing process of light, a part of light can penetrate through the contact-making surface of groove 243 with the external world, and reflects, the light angle of emergence is increased, enlarge the range of exposures of light, as shown in Figure 3, light its angle of emergence behind groove 243 has increased to b by a.Some light reflects through groove 243 surfaces, has changed the direction of propagation of light, and finally penetrates through exit facet 242, has further enlarged optical range.

Please further combined with Fig. 4, leaded light lampshade 24 in the present embodiment can be provided with a plurality of grooves 243, can the corresponding groove 243 in each led light source 23 top, also can the corresponding groove 243 in several led light source 23 tops, the concrete quantity of groove is determined according to actual needs.Groove can be that rounding tapered structure, chamfered edge tapered structure or other have the sunk structure on inclined plane.

In addition, leaded light lampshade 24 can be realized interfixing between leaded light lampshade 24 and the substrate 22 by touching to the edge of outer lug and the side edge of substrate 22.Substrate 22 and leaded light lampshade 24 can be fixed in the lamp housing 25 in several ways.Preferably, the glass clamping ﹠ sealing 28 that for example is fixed on the lamp socket 21 by an end supports.These glass clamping ﹠ sealing 28 inside can be hollow structure.In addition, lamp holder 21 surfaces can have heat radiation screw socket 211, so just make the glass clamping ﹠ sealing 28 and the air of outside better produce convection current, help the heat radiation of substrate 22, have improved the life-span of entire lighting device; Simultaneously, for security and the reliability that guarantees entire lighting device, a fuse 29 can also be set on lead 27, fuse 29 fusing automatically can not cause security incident when short circuit appears in circuit.

The material that leaded light lampshade 24 in the present embodiment adopts can be transparent optical plastics or optical glass, as has high light transmittance and the conductive Merlon of light (PC), polymethyl methacrylate (PMMA) etc.The plan view shape of described leaded light lampshade 24 can be the square of rule, also can be irregular polygon, transparent optical plastic or the optical glass material of lamp housing 25 preferred lightweights.The shape of lamp housing can be shape such as spherical, cylindrical, as shown in Figure 5.

Present embodiment is provided with the leaded light lampshade of groove structure above led light source, the angle of emergence of light is increased, enlarged the range of exposures of LED lighting device, the angle of inclination of groove surfaces rationally is set, can obtain omnibearing three-dimensional illuminating effect, eliminated the little defective of traditional LED light fixture range of exposures, it is more extensive to make it range of application.

Embodiment two:

Fig. 6 shows the structural representation of the LED lighting device that the utility model second embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.

In the utility model embodiment, in order to make emergent ray more evenly and further enlarge exiting surface, can concave-convex micro-structure 244 be set on the surface of the exit facet 242 (comprising groove 243) of leaded light lampshade 24, this concave-convex micro-structure 244 can be gathered to arrange and form by some microstructure units.Rule or erose structures such as the rectangle that this microstructure unit can be made up of structures such as small sags and crests, concavo-convex line or male and fomale(M﹠F)s, circle, ellipse, star.This microstructure unit also can be the curve shape that seals or do not seal.By shape, size, density and the arrangement mode that microstructure unit rationally is set, can effectively improve the uniformity of emergent ray, and further enlarge the light angle of emergence, help realizing on a large scale evenly illumination.

Please further in conjunction with the accompanying drawings 2, the plane of incidence 241 of the leaded light lampshade 24 among the utility model embodiment can be set to planar structure, with the uniformity of the light that guarantees to enter leaded light lampshade 24.

Embodiment three:

Please further in conjunction with the accompanying drawings 6, in the present embodiment, in order to improve the utilization rate of light, reflecting layer 221 can be set at the upper surface of substrate 22, when light that led light source 23 sends is reflexed on the substrate 22 by the plane of incidence of leaded light lampshade 24 or exit facet, can so just effectively raise the utilization rate of light by reflecting layer 221 again with its reflected back leaded light lampshade 24, improve brightness of illumination.

Embodiment four:

Fig. 7 shows the structural representation of the LED lighting that the utility model the 4th embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment.

In the present embodiment, opening part that can described in the aforementioned embodiment groove 243 is provided with lens 245, penetrates lighting device again after making the light that penetrate through groove 243 surfaces pass lens 245, and these lens can be concavees lens, convex lens or planar lens.Adopt further divergent beams of concavees lens, and then enlarge range of exposures; Adopt convex lens or planar lens then can adjust illuminating effect according to actual needs.

Embodiment five:

Please further in conjunction with the accompanying drawings 7, led light source 23 in the previous embodiment is arranged on the front of substrate 22, though leaded light lampshade 24 can play the effect that enlarges illumination range, but following space, substrate 22 residing planes still can't obtain sufficient illumination, therefore, present embodiment is set up several led light sources at the back side of substrate 22, improves the brightness in substrate 22 following spaces, and then realizes omnibearing three-dimensional illumination.

Embodiment six:

Fig. 8 shows the partial schematic diagram of the drive circuit that the utility model the 6th embodiment provides, and for convenience of explanation, only shows the part relevant with present embodiment.

Existing LED light fixture adopts pressure regulator that civil power 220V alternating voltage is reduced to suitable scope more, to exchange low voltage transition again is that DC low-voltage comes the driving LED light source luminescent, but pressure regulator can lose a large amount of electric energy in the process that reduces voltage, be unfavorable for energy savings.In order to address the above problem, present embodiment directly adopts bridge rectifier that civil power 220V alternating voltage is converted to DC voltage, and with a plurality of led light source series connection, makes the output of bridge rectifier be this series load power supply.Dividing potential drop effect by each led light source can make each led light source be operated under the suitable low-voltage.If led light source is less, can also be on the branch road of led light source series limiting resistor 261, the further dividing potential drop by current-limiting resistance 261 makes the led light source operate as normal, guarantees that led light source can not influence its performance or damage because voltage is excessive.Be appreciated that led light source also can arrange like this: the series arm parallel connection of a plurality of led light sources is constituted the load of bridge rectifier.Concrete light source arrangement mode is determined according to the required trouble free service voltage of light source.The drive circuit 27 that comprises this bridge rectifier can be arranged on substrate 22 back sides, as Fig. 2; Also can be arranged in the lamp housing 25, as Fig. 7.

The utility model embodiment is provided with the leaded light lampshade of groove above LED LED illumination device light source, increased the angle of emergence of light, has enlarged the range of exposures of LED lighting device, makes it to be applied to more occasions.The alligatoring micro-structural is set on the exit facet of leaded light lampshade, can improves the uniformity of light, and further enlarge illumination range.Lens are set above groove, can further increase range of exposures, and can adjust illuminating effect.Front at substrate is provided with the reflecting layer, can improve the utilization rate of light, increases brightness of illumination.Led light source is set up at the back side at substrate, can make the following space, plane at substrate place obtain adequate illumination, realizes real omnibearing stereo illumination.Pressure regulator is used in cancellation, and directly adopting bridge rectifier is the led light source power supply of series connection, has avoided energy waste effectively.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. An LED lighting device, comprising a lamp cap, a lamp housing and a driving circuit, a substrate is arranged in the sealed space formed by the lamp cap and the lamp housing, and a plurality of LEDs connected to the driving circuit are carried on the front of the substrate The light source is characterized in that a light guide lampshade is provided in the light emitting direction of the LED light source, and a groove is provided on the emitting surface of the light guide lampshade.

2. The LED lighting device according to claim 1, wherein the groove has an inclined surface.

3. The LED lighting device according to claim 2, wherein the groove is a V-shaped linear groove or a V-shaped arc groove.

4. The LED lighting device according to claim 1, 2 or 3, characterized in that a lens is arranged above the opening of the groove.

5. The LED lighting device according to claim 4, wherein the lens is a concave lens, a convex lens or a plane lens.

6. The LED lighting device according to claim 1, wherein the incident surface of the light guide lampshade is a plane.

7 . The LED lighting device according to claim 1 , wherein a concave-convex microstructure is provided on the outgoing surface of the light guide lampshade. 8 .

8. The LED lighting device according to claim 1, wherein a reflective layer is further provided on the front surface of the substrate.

9. The LED lighting device according to claim 1, wherein a plurality of LED light sources are arranged on the back of the substrate.

10. The LED lighting device according to claim 1, wherein the driving circuit comprises a bridge rectifier circuit for providing a DC voltage to the LED light source.