CN207246842U - A kind of double-colored temperature fluorescent film LED light source - Google Patents

Abstract

The utility model discloses a kind of double-colored temperature fluorescent film LED light source, including lampshade, heat dissipation base, LED core sheet, fluorescent film and switching mechanism, lampshade is connected to form lamp body with heat dissipation base, and LED core sheet and fluorescent film are arranged in lamp body, switching mechanism connection fluorescent film；The LED core sheet includes substrate and some LED chips on substrate, and the substrate is arranged on heat dissipation base, and the fluorescent film is located at LED chip side；High color temperature face and low color temperature surfaces of the opposite two sides of the fluorescent film for the lower synthesis different-colour white light of LED chip excitation, switching mechanism drives fluorescent film upset to realize that colour temperature is changed close to switching between LED chip surface in the nearly LED chip surface of high color temperature face paste and low color temperature surfaces, a circuit only need to be used, simplify control circuit, driving power cost is saved, and light distribution is uniform, colour consistency is good, and colour temperature concentration degree is high.

Description

A kind of double-colored temperature fluorescent film LED light source

Technical field

A kind of double-colored temperature fluorescent film LED light source is the utility model is related to, belongs to LED light technical field.

Background technology

LED light is permeated since it has the advantages that energy-saving and environmental protection, efficient, long lifespan are increasingly received by broad masses To the every field of illumination, it is referred to as the green illumination light source of 21 century.LED light has also progressively been known as the master of market lighting area Stream, is subject to the receiving and accreditation of consumer.Its energy consumption is the half of energy-saving lamp, 1/8th of incandescent lamp, it is traditional photograph What bright lamp can not compare, and the illuminating product that every country is advocated and paid attention to.

Mostly it is the white LED lamp of single colour temperature on the market at present, with demand of the people to different-colour and adaptation More multi-environment illumination, double-colored temperature LED light increasingly receive an acclaim and apply.The realization master of current double-colored temperature white LED light source To use two schemes：First, the white light LEDs lamp bead assembled arrangement of two kinds of different-colours passes through control on a substrate module Two-way circuit realizes the conversion of different-colour；Another kind is the embedded red light chips in white light LEDs lamp bead, by controlling feux rouges core The brightness of piece adjusts the change of colour temperature.But both schemes have been directed to two kinds of control circuits, add driving power Cost, and both schemes are all difficult to reach light being uniformly distributed spatially, especially second scheme, due to feux rouges Chip is the insertion of point light source, and the close region from red light chips, feux rouges is stronger, and light distribution is very uneven.

Utility model content

The utility model provides a kind of double-colored temperature fluorescent film LED light source, overcomes deficiency present in the prior art Place.

The technical solution that the utility model solves above-mentioned technical problem is as follows：

A kind of double-colored temperature fluorescent film LED light source, including lampshade, heat dissipation base, LED core sheet, fluorescent film and tipper Structure, lampshade are connected to form lamp body with heat dissipation base, and LED core sheet and fluorescent film are arranged in lamp body, switching mechanism connection fluorescent film； The LED core sheet includes substrate and some LED chips on substrate, and the substrate is arranged on heat dissipation base, described glimmering Light film is located at LED chip side；The opposite two sides of the fluorescent film is the lower high color for synthesizing different-colour white light of LED chip excitation Warm face and low color temperature surfaces, switching mechanism drive fluorescent film upset with the nearly LED chip surface of high color temperature face paste and low colour temperature face paste Switch between nearly LED chip surface.

Optionally, the fluorescent film is mixed with silica gel water by the fluorescent powder of at least two different densities and is coated on transparent base film Simultaneously natural subsidence forms the high color temperature face and low color temperature surfaces on surface.

Optionally, the fluorescent powder includes aluminates system fluorescent powder and nitrogen (oxygen) compound system fluorescent powder, wherein aluminic acid The density of salt system fluorescent powder is more than nitrogen (oxygen) compound system fluorescent powder.

Optionally, the aluminates system fluorescent powder includes (Y, Gd)₃Al₅O₁₂:Ce blooms, (Lu, Y)₃Al₅O₁₂:Ce is yellowish green Powder and Y₃(Al,Ga)₅O₁₂:At least one of yellowish green powder of Ce, nitrogen (oxygen) the compound system fluorescent powder include (Sr, Ca) SiAlN₃:Eu rouge and powder, (Ba, Sr, Ca) Si₂O₂N₂:At least one of bluish-green powder of Eu.

Optionally, the white light colour temperature synthesized under the nearly LED chip surface of the high color temperature face paste is 6000-7000K, described low Color temperature surfaces close to the white light colour temperature synthesized under LED chip surface be 4000-5000K.

Optionally, the LED light source is strip light, and the lampshade is equipped with plug for bar shaped and both ends.

Optionally, the fluorescent film both sides are fixed with rotation axis, and the switching mechanism connects the rotation axis and passes through institute Stating rotation axis drives the fluorescent film to rotate.

The beneficial effects of the utility model are：

The utility model realizes the switching of white light LEDs different-colour by simply overturning fluorescent film, need to only use one A circuit, simplifies control circuit, has saved driving power cost, and light distribution is uniform, and colour consistency is good, and colour temperature is concentrated Degree is high, by replacing different types of fluorescent film, can also produce different-colour, the white light LEDs of different colour rendering indexs, it is easy to Meet different demands of the client to colour temperature and development index.Without whole LED light is needed to change, as long as replacing fluorescent film, saving About cost while, add flexible Application of the white LED light source in colour temperature.

Brief description of the drawings

Fig. 1 is the top view of double-colored temperature fluorescent film LED light source；

Fig. 2 is the side view of double-colored temperature fluorescent film LED light source；

Fig. 3 is the structure diagram of fluorescent film；

Fig. 4 is the attachment structure schematic diagram of switching mechanism and fluorescent film.

Embodiment

The principle and feature of the utility model are described below in conjunction with attached drawing, example is served only for explaining this practicality It is new, it is not intended to limit the scope of the utility model.

Referring to figs. 1 to Fig. 2, a kind of double-colored temperature fluorescent film LED light source includes lampshade 1, heat dissipation base 2, LED core sheet 3, glimmering Light film 4 and switching mechanism 5, lampshade 1 are connected to form lamp body with heat dissipation base 2, and LED core sheet 3 and fluorescent film 4 are arranged on lamp body Interior, switching mechanism 5 connects fluorescent film 4.The LED core sheet 3 includes substrate 31 and some LED chips on substrate 31 32, the substrate 31 is arranged on heat dissipation base 2, and the fluorescent film 4 is located at 32 side of LED chip.The fluorescent film 4 it is opposite two Face drives fluorescent film 4 for the high color temperature face of the lower synthesis different-colour white light of the excitation of LED chip 32 and low color temperature surfaces, switching mechanism 5 Overturn to switch on nearly 32 surface of LED chip of high color temperature face paste and low color temperature surfaces close between 32 surface of LED chip.

By taking strip light as an example, the lampshade 1, heat dissipation base 2, LED core sheet 3 and fluorescent film 4 are strip structure, and lamp Cover 1 both ends and be equipped with plug 6.Heat dissipation base 2 is aluminium heat dissipation base, and substrate 31 is also aluminum substrate, easy to scattered on heat dissipation base 2 Heat and progress circuit connection.32 top packaging silicon rubber layer of LED chip, fluorescent film 4 are located on the outside of layer of silica gel and by LED chip 32 Excitation.

With reference to figure 3, the fluorescent film 4 is uniformly mixed by two or more fluorescent powder and silica gel water, is then applied Cover or the technique such as be cast and form fluoresent coating 42 on 41 surface of transparent base film (such as plastic foil) and form.At least one in fluorescent powder Kind is the larger aluminates system fluorescent powder of density, such as (Y, Gd)₃Al₅O₁₂:Ce blooms, (Lu, Y)₃Al₅O₁₂:The yellowish green powder of Ce and Y₃ (Al,Ga)₅O₁₂:One or more in the yellowish green powder of Ce；Fluorescent powder is at least also changed containing the less nitrogen of a kind of density (oxygen) Objects system fluorescent powder, such as (Sr, Ca) SiAlN₃:Eu rouge and powder, (Ba, Sr, Ca) Si₂O₂N₂:One kind in the bluish-green powder of Eu or it is a kind of with On.Two or more the fluorescent powder, since density is different, made fluorescent film has certain before curing Residence time, causes the big fluorescent powder of density to assemble below fluoresent coating 42 more, and the light fluorescent powder of density is applied in fluorescence Layer 42 top aggregation it is more, after this curing fluorescent film difference two sides be fitted on LED chip surface can launch it is not homochromy The white light of temperature.The white light colour temperature wherein synthesized under the nearly LED chip surface of high color temperature face paste is 6000-7000K, low color temperature surfaces close to The white light colour temperature synthesized under LED chip surface is 4000-5000K.

For example, using Y₃(Al,Ga)₅O₁₂:The yellowish green powder of Ce and (Sr, Ca) SiAlN₃:Eu rouge and powder makes fluorescent film.By Acted in gravitational settling, 42 lower surface of fluoresent coating (surface to connect with transparent base film 41) Y₃(Al,Ga)₅O₁₂:Ce is yellowish green Powder is enriched with more, upper surface (Sr, Ca) SiAlN₃:The enrichment of Eu rouge and powder is more.It is more close to being enriched with to be illustrated in figure 3 blue chip Y₃(Al,Ga)₅O₁₂:The yellowish green powder surfaces of Ce (i.e. close to transparent base film 41, being defined as front), through the transmitting light of fluorescent film Spectrum.It is blue chip as shown in Figure 4 close to being enriched with more (Sr, Ca) SiAlN₃:Eu rouge and powder surface is (i.e. close to fluoresent coating 42, it is defined as reverse side), through the emission spectrum of fluorescent film.Fig. 3 and Fig. 4 can be seen that the obverse and reverse of fluorescent film close to indigo plant The spectrum that optical chip is launched is significantly different, and close to the one side of blue chip, the more fluorescent powder of its corresponding enrichment shines Intensity is higher, therefore can switch the positive and negative of fluorescent film, achievees the purpose that two kinds of colour temperature conversions.Table 1 is positive and negative fluorescent film The optical color parameter of LED light source.

The optical color parameter of 1 positive and negative fluorescent film LED light source of table

Fluorescent film direction	Colour temperature/K	Chromaticity coordinates CIE	Colour rendering index/%
				Front	6577	(0.314,0.312)	82.1
Reverse side	4560	(0.345,0.301)	84.7

As long as the ratio for changing fluorescent powder and the fluorescent powder that changes different wave length or species make fluorescent film, by for Different-colour, the white light of different colour rendering indexs can be prepared by changing fluorescent film.

4 both sides of fluorescent film are fixed with rotation axis 7, and the switching mechanism 5 connects the rotation axis 7 and by described turn Moving axis 7 drives the fluorescent film to rotate.The switching mechanism 5 can be the conventional construction for realizing manual overturning or electric turnover, For example, with reference to figure 4, switching mechanism 5 is the traction rope for being connected to 7 upper and lower both sides of rotation axis, is pulled by the direction of arrow in figure The traction rope of side, you can drive fluorescent film 4 by front upset to reverse side.

Above-described embodiment is only used for further illustrating a kind of double-colored temperature fluorescent film LED light source of the utility model, but this reality Embodiment is not limited to new, every foundation the technical essence of the utility model is made above example any simple Modification, equivalent variations and modification, each fall within the protection domain of technical solutions of the utility model.

Claims (7)

1. A kind of 1. double-colored temperature fluorescent film LED light source, it is characterised in that：Including lampshade, heat dissipation base, LED core sheet, fluorescent film with And switching mechanism, lampshade are connected to form lamp body with heat dissipation base, LED core sheet and fluorescent film are arranged in lamp body, and switching mechanism connects Connect fluorescent film；The LED core sheet includes substrate and some LED chips on substrate, and the substrate is arranged on heat dissipation base On, the fluorescent film is located at LED chip side；The opposite two sides of the fluorescent film is the lower synthesis different-colour of LED chip excitation The high color temperature face of white light and low color temperature surfaces, switching mechanism drive fluorescent film upset with the nearly LED chip surface of high color temperature face paste and Low color temperature surfaces switch close between LED chip surface.
2. 2. double-colored temperature fluorescent film LED light source according to claim 1, it is characterised in that：The fluorescent film is by least two The fluorescent powder of different densities is mixed with silica gel water forms the high color temperature face and low coated on transparent base film surface and natural subsidence Color temperature surfaces.
3. 3. double-colored temperature fluorescent film LED light source according to claim 2, it is characterised in that：The fluorescent powder includes aluminate System fluorescent powder and nitrogen oxides system fluorescent powder, the wherein density of aluminates system fluorescent powder are more than nitrogen oxides system fluorescence Powder.
4. 4. double-colored temperature fluorescent film LED light source according to claim 3, it is characterised in that：The aluminates system fluorescent powder Including (Y, Gd)₃Al₅O₁₂:Ce blooms, (Lu, Y)₃Al₅O₁₂:The yellowish green powder of Ce and Y₃(Al,Ga)₅O₁₂:At least one in the yellowish green powder of Ce Kind, the nitrogen oxides system fluorescent powder includes (Sr, Ca) SiAlN₃:Eu rouge and powder, (Ba, Sr, Ca) Si₂O₂N₂:In the bluish-green powder of Eu At least one.
5. 5. double-colored temperature fluorescent film LED light source according to claim 1 or 2, it is characterised in that：The high color temperature face paste is near The white light colour temperature synthesized under LED chip surface is 6000-7000K, and the low color temperature surfaces are white close to synthesizing under LED chip surface Light color temperature is 4000-5000K.
6. 6. double-colored temperature fluorescent film LED light source according to claim 1, it is characterised in that：The LED light source is strip light, The lampshade is equipped with plug for bar shaped and both ends.
7. 7. double-colored temperature fluorescent film LED light source according to claim 1, it is characterised in that：The fluorescent film both sides are fixed with Rotation axis, the switching mechanism connect the rotation axis and drive the fluorescent film to rotate by the rotation axis.