CN201439888U

CN201439888U - Curved surface light guide type lamp source

Info

Publication number: CN201439888U
Application number: CN2009201471001U
Authority: CN
Inventors: 陈世洲; 陈志忠; 蓝弘昌; 徐清泰
Original assignee: 'XINGLONGFA ELECTRONIC Co Ltd
Current assignee: 'XINGLONGFA ELECTRONIC Co Ltd; Litek Opto-Electronics Co Ltd
Priority date: 2009-05-25
Filing date: 2009-05-25
Publication date: 2010-04-21
Anticipated expiration: 2019-05-25

Abstract

The utility model relates to a curved surface light guide type lamp source, belonging to electrical category. The lamp source mainly comprises a curved surface light guide plate, a diffusion piece and a reflection piece, wherein at least one side of the curved surface light guide plate is provided with a plurality of light-emitting components, one side of the curved surface light guide plate takes on a rough surface which can lead the light to be scattered and change the path of the light, and the outer side can be a smooth surface which is formed with a plurality of V-shaped grooves, so that light sources which are produced by the light-emitting components positioned at one side of the light guide plate produce can be reflected by the rough surface arranged at the inner side of the light guide plate, and the path of the light is changed; and the outer side of the light guide plate is a curved surface, and the reflected light sources can be emitted through the curved surface so as to provide a wide-angle irradiation area; in addition, the outer side of the light guide plate is provided with a V-shaped groove and the diffusion piece, wherein the V-shaped groove is used for leading the light to be covered on the diffusion piece at the outer side of the curved surface light guide plate to increase the diffusion angle of the reflected light, so that wider irradiation area can be provided; furthermore, a reflection area arranged at the inner side of the curved surface light guide plate can lead the light of the light-emitting components to be evenly distributed, thus further achieving the aim of improving illumination level.

Description

Curved surface light-guiding type lamp source

Technical field

The utility model belongs to electric information, and particularly a kind of curved surface light-guiding type lamp source refers to a kind of curved surface light-guiding type lamp source that can significantly promote integral illumination brightness and scope especially.

Background technology

Direct type light guide plate commonly used, as shown in Figure 1, this lighting device 1 is to be made up of diffuser plate 10, circuit board 12 and light emitting diode 14, wherein on circuit board 12, be equiped with a plural number light emitting diode 14, and regard to light emitting diode 14 places and be equiped with diffuser plate 10, therefore when the light that is given out from light emitting diode 14 then direct irradiation in diffuser plate 10, and light led be incident upon the outside, to reach illuminating effect, if then must change light emitting diode 14 a fairly large number of circuit boards in addition when needing to increase brightness, can reach the effect of high illumination.

Yet above-mentioned direct type light guide plate exists following point and defective when using, and needs further to be improved:

1, the quantity of the light emitting diode 14 of this kind structure can have influence on the integral illumination degree.

2, because this kind light structures is the straight-down negative illumination, when if light emitting diode 14 putting positions are asymmetric or unequal, then can cause the uneven situation of light to produce, the user can see one one LEDs bright spot, brightness is lower between LED and the LED, forms uneven light.

3, because of the light that light emitting diode 14 shone is straight light source according to formula, so the area that light threw light on is less relatively, can't promote illumination zone.

The utility model content

The utility model main purpose is to provide a kind of curved surface light-guiding type lamp source, solve existing direct type light guide plate quantity owing to light emitting diode when using and to have influence on the integral illumination degree, and this kind straight-down negative light structures, when if the light emitting diode putting position is asymmetric or unequal, then can cause the uneven situation of light to produce, form uneven light; And be straight light source because of light that light emitting diode shone according to formula, therefore the area that light threw light on is less relatively, can't promote the problem of illumination zone, and owing to utilize curved surface light-guiding type lamp source, reach the increase illumination zone, therefore can use minimum light emitting diode (LED) to reach maximum illuminating effect; Utilize the echo area can allow the light of light emitting diode (LED) evenly distribute simultaneously, and then reach the lifting illuminance; Because echo area density increases the path with change light gradually, and then control luminosity and angle.

Curved surface light-guiding type lamp source constitutes, it mainly is by the curved surface LGP, diffusion sheet and reflector plate are formed, its mean camber LGP is provided with plural luminescence component, and make the matsurface of a change light travel path in the curved surface LGP, this matsurface can allow light produce scattering and change the path of its light, plural V-groove and diffusion sheet have then been made in lateral surface, therefore when the reflecting layer acceptance that is coated in curved surface LGP medial surface during from the light of luminescence component, can light be changed course by coarse echo area makes these light that are reflected to penetrate by this district's face, the irradiated area of wide-angle is provided, in addition, utilize V-groove light to be reflexed to the lateral surface that is coated in the curved surface LGP again, light after diffusion sheet can will be reflected simultaneously increases the diffusion angle, so that bigger irradiated area to be provided.

The structure in curved surface light-guiding type lamp source comprises: a curved surface LGP, this curved surface LGP is provided with plural luminescence component in the end limit, and wherein make one for the echo area that changes light path in a side in this curved surface LGP, and a reflecting layer, these reflection series of strata are coated in a wherein side of this curved surface LGP;

The curved surface LGP is provided with plural luminescence component in the corresponding end limit on above-mentioned end limit;

The side then is formed with plural vee-cut outside the curved surface LGP;

Luminescence component is a light emitting diode;

The echo area further is matsurface, concave point or one of them person of site district.

The curved surface LGP is transparent or semitransparent one of them person;

The side is coating one diffusion sheet outside the curved surface LGP;

The side is coating one prismatic lens outside the curved surface LGP;

Reflection series of strata one reflector plate, and directly be coated in a wherein side of this curved surface LGP;

Wherein this reflecting layer forms the wherein side of a thin metal reflecting layer in this curved surface LGP with evaporation or sputter process.

Advantage of the present utility model is: finish light reflected, then can utilize the vee-cut on the curved surface LGP lateral surface to reflect again to promote illuminance once more, and light reflected is incident upon diffusion sheet, and make light can increase the light range of exposures by diffusion sheet, and the light transmittance of above-mentioned curved surface LGP can determine to irradiate the number of light with the control shading value, like this, utilize diffusion sheet can reach the increase illumination zone, therefore can use minimum luminescence component, reach best illuminating effect, echo area by curved surface LGP medial surface can allow the light of luminescence component evenly distribute in addition, and then reaches the purpose that promotes illuminance.

Description of drawings:

Fig. 1 is existing direct type light guide plate structure schematic diagram commonly used;

Fig. 2 is provided with the schematic perspective view of plural LED in curved surface LGP both sides for the utility model;

Fig. 3 is the utility model perspective exploded view;

Fig. 4 is provided with the opticpath schematic diagram of plural LED structure for the utility model curved surface LGP both sides;

Fig. 5 is the curved surface LGP two ends installing LED of another embodiment of the utility model, and the installing diffusion sheet is in the schematic perspective view of curved surface LGP lateral surface;

Fig. 6 is the opticpath schematic diagram of the utility model structure;

Fig. 7 is the utility model structural representation of the curved surface LGP outside mask V-groove of an embodiment again;

Fig. 8 is the schematic perspective view of the utility model in curved surface LGP outside mask V-groove LGP;

Fig. 9 changes the structural representation of position for V-groove.

The specific embodiment:

As accompanying drawing 2 to shown in the accompanying drawing 4, the utility model is a kind of curved surface light-guiding type lamp source, this light guide structure 2 mainly is by transparent or semitransparent v curved surface LGP and reflecting layer (as reflector plate) 22, wherein be provided with plural luminescence component 24 (LED) in curved surface LGP 20 limits, and be formed with one for the echo area 202 that changes light path, as matsurface, concave point or site district in curved surface LGP 20 1 sides; In addition 202 be coated with reflecting layer 22 in the echo area for reflection sources in 20 of curved surface LGPs, and reflecting layer 22 adopts evaporation or sputter manufacturing process to form a thin metal reflecting layer, by this, when luminescence component 24 is luminous, light then can increase along with echo area 202 density of curved surface LGP 20 medial surfaces gradually to change the path of light, and then control luminosity and angle, promote the reflectivity of overall light again by reflecting layer 22, light is increased and then the lifting illuminance, to reach maximum illumination benefit.

Shown in accompanying drawing 5,6, being installed in limit, curved surface LGP 20a two ends with luminescence component 24a is example, when luminescence component 24a is luminous, light then can along with curved surface LGP 20a wherein the echo area 202a density of a side increase gradually to change the path of light, and then control luminosity and angle, promote the reflectivity of overall light again by reflecting layer 22a, light is increased and then the lifting illuminance.

Moreover, then be coated with diffusion sheet 26a or prismatic lens 28a wherein in the lateral surface of curved surface LGP 20a, this is an example with diffusion sheet 26a, finish light reflected, then can refract to diffusion sheet 26a via curved surface LGP 20a, make light can increase the light range of exposures by diffusion sheet 26a, and the light transmittance of above-mentioned curved surface LGP 20a can determine to irradiate the number of light with the control shading value, so, utilize diffusion sheet 26a can reach the increase illumination zone, therefore can use minimum luminescence component 24a (LED) to reach maximum illumination benefit, echo area by curved surface LGP 20a medial surface can allow the light of luminescence component 24a evenly distribute in addition, and then reaches the lifting illuminance.

As accompanying drawing 7 to shown in the accompanying drawing 9, be formed with plural V-groove 204b in curved surface LGP 20b lateral surface in vertical or horizontal mode, when the luminescence component 24b on curved surface LGP 20b one end limit is luminous, light then can along with curved surface LGP 20b medial surface wherein an echo area 202b density increase gradually to change the path of light, and then control luminosity and angle, promote the reflectivity of overall light again by reflecting layer 22b, light is increased and then the lifting illuminance.

Finish light reflected, then can utilize the vee-cut 204b on the curved surface LGP 20b lateral surface to reflect again to promote illuminance once more, and light reflected is incident upon diffusion sheet 20b, and make light can increase the light range of exposures by diffusion sheet 26b, and the light transmittance of above-mentioned curved surface LGP 20b can determine to irradiate the number of light with the control shading value, so, utilize diffusion sheet 26b can reach the increase illumination zone, therefore can use minimum luminescence component 24b (light emitting diode) to reach maximum illuminating effect, echo area by curved surface LGP 20b medial surface can allow the light of luminescence component 24b evenly distribute in addition, and then reaches the lifting illuminance.

Claims

1. curved surface light-guiding type lamp source is characterized in that comprising: a curved surface LGP, and this curved surface LGP is provided with plural luminescence component in the end limit, and wherein is formed with one for the echo area that changes light path in a side in this curved surface LGP; And a reflecting layer, these reflection series of strata are coated in a wherein side of this curved surface LGP.

2. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: more be included in this curved surface LGP and be provided with plural luminescence component in the corresponding end limit on above-mentioned end limit.

3. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: be included in more that the side then is formed with plural vee-cut outside this curved surface LGP.

4. according to claim 1 or 2 described curved surface light-guiding type lamp sources, it is characterized in that: wherein this luminescence component is a light emitting diode.

5. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: wherein this echo area further is matsurface, concave point or one of them person of site district.

6. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: wherein this curved surface LGP is transparent or semitransparent one of them person.

7. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: wherein the side is coating one diffusion sheet outside this curved surface LGP.

8. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: wherein the side is coating one prismatic lens outside this curved surface LGP.

9. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: this reflection series of strata one reflector plate wherein, and directly be coated in a wherein side of this curved surface LGP

10. according to the described curved surface light-guiding type of claim 1 lamp source, it is characterized in that: wherein this reflecting layer forms the wherein side of a thin metal reflecting layer in this curved surface LGP with evaporation or sputter manufacturing process.