CN202708636U

CN202708636U - Light-emitting diode (LED) lamp

Info

Publication number: CN202708636U
Application number: CN2012201670670U
Authority: CN
Inventors: 莫绍祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-19
Filing date: 2012-04-19
Publication date: 2013-01-30
Anticipated expiration: 2022-04-19

Abstract

The utility model relates to a light-emitting diode (LED) lamp which comprises a plurality of LED light sources and a base seat. Two different LED light sources are mounted in the base seat. At least one of the LED light sources is a white-light LED light source, at least one of the LED light sources contains a luminous chip of which the dominant wave length is between 470 nanometers and 520 nanometers and at least one of the LED light sources contains a luminous chip of which the dominant wave length is between 570 nanometers and 680 nanometers. Light sent from the LED lamp is comprehensive in total spectrum, and the color rendering index can be improved.

Description

Led lamp

Technical field

The utility model relates to a kind of luminaire, especially a kind of led lamp.

Background technology

At present, white light emitting diode (Light Emitting Diode, LED) lamp mainly is the white led lamp of fluorescent material formula, and principle of luminosity generally is to produce gold-tinted by the blue LED chip excitated fluorescent powder, the gold-tinted of generation and original blue light and form white light.In conjunction with the spatial distribution of consulting general white light emitting diode shown in Figure 1, blue-green and orange, red composition are very low in the white light, and colour rendering index is therefore lower, and overall spectrum is not comprehensive.

The utility model content

In view of above-mentioned condition, be necessary to provide a kind of spectrum more comprehensively, led lamp that colour rendering index is high.

A kind of led lamp comprises a plurality of LED sources and a pedestal, and a plurality of different LED sources are assemblied in this pedestal.A plurality of LED sources at least one of them be white light emitting diode light source, a plurality of LED sources at least one of them include dominant wavelength the luminescence chip of 470nm-520nm and a plurality of LED sources one of them includes dominant wavelength at the luminescence chip of 570nm-680nm at least.

In these a plurality of different LED sources first illuminating source is arranged, this dominant wavelength is arranged in this first illuminating source at the luminescence chip of 570nm-680nm in luminescence chip and this dominant wavelength of 470nm-520nm.

Include two dominant wavelengths in this first illuminating source at the luminescence chip of 570nm-680nm and dominant wavelength luminescence chip at 470nm-520nm.

Described led lamp comprises packaging body, and this dominant wavelength is the luminescence chip of 470nm-520nm and this dominant wavelength being encapsulated in this packaging body at the luminescence chip of 570nm-680nm.

Described led lamp further comprises light diffusing sheet, and it is arranged on the top of these a plurality of different LED sources, and the light that these a plurality of LED sources send is through this light diffusing sheet.

Described led lamp further comprises LGP, and this LGP comprises that incidence surface reaches and exiting surface, and these a plurality of different LED sources are near this incidence surface.

The exiting surface of described LGP is provided with the site.

Described a plurality of different LED source is six, comprises three color luminous diode light-sources and three white light emitting diode light sources.

Described six LED sources are arranged on the disc of pedestal, and one of them colored light sources is arranged on the center of disc, and other LED sources are along the circumference spaced set of disc.

Described a plurality of different LED source is four, comprises two color luminous diode light-sources and two white light emitting diode light sources.

Above-mentioned led lamp comprises white light emitting diode, and dominant wavelength is at the luminescence chip of 470nm-520nm, and dominant wavelength is at the luminescence chip of 570nm-680nm, and the overall spectrum of the light that led lamp is sent improves colour rendering index more comprehensively.

Description of drawings

Fig. 1 is the spectral distribution graph of general white light emitting diode;

Fig. 2 is the schematic diagram of the utility model the first embodiment led lamp;

Fig. 3 is the schematic diagram of the utility model the second embodiment led lamp

Fig. 4 is the schematic cross-section of led lamp shown in Figure 3;

Fig. 5 is the spectrogram of the first LED source of led lamp shown in Figure 3;

Fig. 6 is the schematic diagram of the utility model the 3rd embodiment led lamp;

Fig. 7 is the schematic diagram of the utility model the 4th embodiment led lamp;

Fig. 8 is the schematic diagram of the utility model the 5th embodiment led lamp;

Fig. 9 is the schematic diagram of the utility model the 6th embodiment led lamp;

Figure 10 is the mixed spectrogram of a plurality of LED source light among the utility model embodiment.

The specific embodiment

Below in conjunction with drawings and Examples led lamp of the present utility model is described in further detail.

See also Fig. 2, the utility model the first preferred embodiment led lamp 10 comprises a plurality of LED sources 11 and a pedestal 12, and a plurality of different LED sources are assemblied in this pedestal 12.Be specially three LED sources 11 in this first preferred embodiment, be respectively the first LED source 111, the second LED source 112, the 3rd LED source 113.The light that the first LED source 111 sends is white light, and the dominant wavelength of the light that the second LED source 112 sends is 470nm-520nm, and the dominant wavelength of the light that the 3rd LED source 113 sends is 570nm-680nm.The first LED source 111, the second LED source 112 and the 3rd LED source 113 are arranged in the described pedestal 12 with arranging.Wherein, be respectively equipped with a luminescence chip in the first LED source 111, the second LED source 112 and the 3rd LED source 113.

See also Fig. 3 and Fig. 4, be depicted as the utility model the second preferred embodiment led lamp 10A, led lamp 10A is similar to led lamp 10, and its difference is: the light that the first LED source 111A of three LED source 11A, the second LED source 112A and the 3rd LED source 113 send is white light; And be provided with three luminescence chips in the first LED source 111A, wherein the dominant wavelength of the light that sends of two luminescence chips is 570nm-680nm, the dominant wavelength of the light that another luminescence chip sends is 470nm-520nm, and its spectrogram as shown in Figure 5; As can be seen from Figure 5, the light that the LED source 111A of present embodiment sends is white light, but its spectrum is different from the spectrum (as shown in Figure 1) of white light emitting diode of the prior art.And be respectively equipped with a luminescence chip in the second LED source 112A and the 3rd LED source 113A.The luminescence chip of the first LED source 111A, the second LED source 112A and the 3rd LED source 113A is encapsulated by packaging body 15A respectively.This preferred embodiment led lamp 10A further comprises lens 16A.The below of lens 16A is provided with three container cavity 162A, these three container cavity 162A are corresponding with the first LED source 111A, the second LED source 112A and the 3rd LED source 113A, thereby so that the light that the first LED source 111A, the second LED source 112A and the 3rd LED source 113A produce can carry out mixed light and optically focused through lens 16A.

See also Fig. 6, be depicted as the utility model the 3rd preferred embodiment led lamp 20, led lamp 20 is similar to led lamp 10, its difference is: led lamp 20 comprises a plurality of LED sources 21, is specially A, B, C, D, E and F totally six LED sources 21.Six LED sources 21 are arranged on the surface of pedestal 22, and each LED source 21 can be mixed the light mixing that lens send each LED source 21.In addition, the surface of pedestal 22 is disc, and A is positioned at the center of this disc, B, C, D, E, F on disc along circumference spaced set roughly.Wherein, A, C, F are color luminous diode, and wavelength is respectively 480,590,625nm, and B, D are the white light of colour temperature 6000K, and E is the white light of colour temperature 4000K.The luminosity of each LED source 21 can be regulated, and the luminosity ratio by each light emitting diode of adjustment is to reach best color developing effect.Further, spherical outer cover can be set on the surface of pedestal 22 and make globular bulb.

See also Fig. 7, the utility model the 4th preferred embodiment led lamp 30, led lamp 30 is similar to led lamp 10, its difference is: led lamp 30 comprises a plurality of LED sources 31, is specially A, B, C, D totally four LED sources 31.Four LED sources 31 are arranged on the surface of pedestal 32, and in this preferred embodiment, the surface of pedestal 32 is disc, A, B, C, D on disc along circumference spaced set roughly.Wherein, A, C are Tricolor LED, and including respectively wavelength among A and the C is 480nm, 590nm, three light-emitting diode chip for backlight unit of 625nm.B, D are the white light emitting diode light source.When the chip of three wavelength among A or the C drove in the proper ratio, the overall chromaticity of A or C can be bordering on white, and is close with the primary colors of B, D, can not see strong former colour contrast when using each LED source 31 separate lenses.

See also Fig. 8, similar to the first embodiment led lamp 10 of the utility model the 5th preferred embodiment led lamp 40, its difference is: the top of the LED source 41 of led lamp 40 is provided with diffuser plate 46.The light that LED source 41 sends can mix during by diffuser plate 46, thereby the spectrum that led lamp 40 is sent is the white light with high-color rendering, as shown in figure 10.

See also Fig. 9, the utility model the 6th embodiment led lamp 50 is similar to the first embodiment led lamp 10, its difference is: led lamp 50 is provided with LGP 57, and pedestal 52 and LED source 51 are arranged on the side of LGP 57.Specifically, LGP 57 has incidence surface 572 and exiting surface 574, and incidence surface 572 is a side of LGP 57, and exiting surface 574 is the upper surface of LGP 57; LED source 51 is fixed on the pedestal 52 and the place of close incidence surface 572 is set.The light that LED source 51 sends enters LGP 57 from incidence surface 572, penetrates from exiting surface 574 after mixing in LGP.Further, for selecting the concrete optical position that goes out, also the site can be set in exiting surface 574 these corresponding bright dipping positions.Wherein, site 576 can form by printing or engraving, for example screen painting or laser engraving.

Be appreciated that led lamp 50 among described the first, the 4th embodiment also can further comprise light diffusing sheet, LGP and the reflector among the second or the 5th or the 6th embodiment.

See also Figure 10, be depicted as white light emitting diode, dominant wavelength is at the luminescence chip of 470nm-520nm, and dominant wavelength is at the mixed spectral distribution graph of luminescence chip light of 570nm-680nm, spectral distribution graph compared to the existing white light emitting diode shown in Fig. 1, the utility model led lamp passes through white light emitting diode, dominant wavelength is at the luminescence chip of 470nm-520nm, and dominant wavelength is assemblied in the light mixing of sending in the pedestal at the luminescence chip of 570nm-680nm, the overall spectrum of the light that led lamp is sent improves colour rendering index more comprehensively.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, any simple modification that foundation technical spirit of the present utility model is done above embodiment, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. led lamp, comprise a plurality of LED sources and a pedestal, a plurality of different LED sources are assemblied in this pedestal, it is characterized in that: a plurality of LED sources at least one of them be white light emitting diode light source, a plurality of LED sources at least one of them include dominant wavelength the luminescence chip of 470nm-520nm and a plurality of LED sources one of them includes dominant wavelength at the luminescence chip of 570nm-680nm at least.

2. led lamp as claimed in claim 1, it is characterized in that: in these a plurality of different LED sources first illuminating source is arranged, this dominant wavelength is arranged in this first illuminating source at the luminescence chip of 570nm-680nm in luminescence chip and this dominant wavelength of 470nm-520nm.

3. led lamp as claimed in claim 2 is characterized in that: include two dominant wavelengths in this first illuminating source at the luminescence chip of 570nm-680nm and dominant wavelength luminescence chip at 470nm-520nm.

4. led lamp as claimed in claim 2, it is characterized in that: described led lamp comprises packaging body, this dominant wavelength is the luminescence chip of 470nm-520nm and this dominant wavelength being encapsulated in this packaging body at the luminescence chip of 570nm-680nm.

5. led lamp as claimed in claim 1, it is characterized in that: described led lamp further comprises light diffusing sheet, it is arranged on the top of these a plurality of different LED sources, and the light that these a plurality of LED sources send is through this light diffusing sheet.

6. led lamp as claimed in claim 1, it is characterized in that: described led lamp further comprises LGP, this LGP comprise incidence surface and and exiting surface, these a plurality of different LED sources are near this incidence surface.

7. led lamp as claimed in claim 6, it is characterized in that: the exiting surface of described LGP is provided with the site.

8. led lamp as claimed in claim 1, it is characterized in that: described a plurality of different LED sources are six, comprise three color luminous diode light-sources and three white light emitting diode light sources.

9. led lamp as claimed in claim 8, it is characterized in that: described six LED sources are arranged on the disc of pedestal, one of them colored light sources is arranged on the center of disc, and other LED sources are along the circumference spaced set of disc.

10. led lamp as claimed in claim 1, it is characterized in that: described a plurality of different LED sources are four, comprise two color luminous diode light-sources and two white light emitting diode light sources.