CN202091838U - Light-emitting diode lamp - Google Patents
Light-emitting diode lamp Download PDFInfo
- Publication number
- CN202091838U CN202091838U CN2011201548922U CN201120154892U CN202091838U CN 202091838 U CN202091838 U CN 202091838U CN 2011201548922 U CN2011201548922 U CN 2011201548922U CN 201120154892 U CN201120154892 U CN 201120154892U CN 202091838 U CN202091838 U CN 202091838U
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- CN
- China
- Prior art keywords
- light
- led lamp
- housing
- passing board
- connecting portion
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- Expired - Fee Related
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Abstract
The utility model relates to a light-emitting diode lamp which comprises a housing, a light-emitting unit and a light-transmitting board. The light-emitting unit is accommodated in the housing and the light-emitting unit comprises a circuit board and a plurality of light-emitting diodes. The light-transmitting board is accommodated in the housing and positioned above the plurality of the light-emitting diodes, and at least one fluorescent powder is coated on the light-transmitting board. The light-emitting diodes are separated from the fluorescent powder, thereby enabling the fluorescent powder to be far away from the light-emitting diodes serving as heat sources, reducing the impacts of temperature of the light-emitting diodes on the fluorescent powder, keeping the conversion efficiency of the fluorescent powder and further maintaining the reliability of a lamp tube.
Description
Technical field
The utility model relates to a kind of led lamp, refers to especially a kind of light emitting diode and fluorescent material be separated to produce the led lamp of illuminating ray, is used for general illumination.
Background technology
In order to save the energy to reach environmental protection, the trend of illumination development at present is to replace existing lighting with white light emitting diode (hereinafter to be referred as LED).At present the lighting theory of white light LEDs has a kind of light that to be the utilization fluorescent material excite blue-ray LED or ultraviolet LED to convert white light to.For example, utilize the blue-ray LED of wavelength 460nm to send blue light, absorb blue light by fluorescent material then and be converted to gold-tinted, utilize lens principle with blue light and yellow light mix again after and the generation white light.
Characteristics such as the color uniformity of white light LEDs that above-mentioned technology is produced and light extraction efficiency can be subjected to concentration, volume and the position of fluorescent material coating and difference to some extent.Usually fluorescent material is to mix in sealing, fluorescent material near the distance of light source not simultaneously, the situation of conversion is also different.In addition, fluorescent material also is subjected to temperature easily and influences conversion efficiency, and high temperature causes the fluorescent material decay easily, and then causes production reliability lower.Moreover this technology is owing in luminescent spectrum, lack the part of red light, so that color rendering is not good, and colour temperature is also higher, therefore has manufacturer to pass through the fluorescent material technology and changes, and develops the warm white LED of colour temperature lower (about 3000K).When mixing two kinds of fluorescent material, whether the two evenly also is the problem of making.
Led lamp has many white light LEDs usually, also need face the error of different brightness of LED and colourity, and the common practice is to select brightness and the close LED of colorimetric properties to gather together and be assembled in the ligthing paraphernalia.The formality of this kind practice is loaded down with trivial details, also raises the cost.
In sum, this creator proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned defective.
Summary of the invention
The purpose of this utility model is to provide a kind of led lamp, and the high temperature during with the reduction led lighting is to the influence of fluorescent material, and the light conversion efficiency that keeps fluorescent material is to keep the reliability of fluorescent tube.
Another purpose of the present utility model also is a kind of led lamp is provided, and the error effect of brightness and colourity between a plurality of light emitting diodes is reduced, and saves the formality of selecting light emitting diode.
In order to achieve the above object, the utility model provides a kind of led lamp, includes a housing, a luminescence unit, reaches a light-passing board.This luminescence unit is contained in this housing and includes at least one light emitting diode; This light-passing board is fixed in this housing and is positioned at this at least one light emitting diode top, and this light-passing board is coated with at least a fluorescent material.
Wherein, this led lamp also comprises a transparent enclosing cover, and this enclosing cover is fixed in this housing, and wherein this light-passing board is positioned at the below of this enclosing cover.
Wherein, the end face both sides of this housing respectively form a junction, and the both side edges of this enclosing cover respectively forms a flange connector that is stuck in this connecting portion.
Wherein, the end face both sides of this housing also respectively form connecting portion in, and the both sides of this light-passing board are sticked in respectively in this interior connecting portion.
Wherein, the end face periphery of this housing forms a junction, and the periphery formation one of this enclosing cover is stuck in the flange connector of this connecting portion.
Wherein, the end face periphery of this housing also forms connecting portion in, and the peripheral snap of this light-passing board is in this in connecting portion.
Wherein, this light-passing board is a tabular.
Wherein, this light-passing board is the arcuation curved surface.
Wherein, this light-passing board is glass plate or soft board.
Wherein, this enclosure interior forms an accommodation section, and the section of this accommodation section is cup-shaped, and this luminescence unit is contained in this accommodation section, and this light-passing board is fixed in the apical margin of this accommodation section.
The utility model separates light emitting diode and fluorescent material, makes fluorescent material away from the light emitting diode as thermal source with this, reduces the influence of the temperature of light emitting diode to fluorescent material, and the conversion efficiency that keeps fluorescent material is to keep the reliability of fluorescent tube.
More than about the explanation of the explanation of the utility model content and following embodiment in order to for example and explain principle of the present utility model, and provide patent claim of the present utility model further to explain.
Description of drawings
Fig. 1 is the cutaway view of led lamp first embodiment of the present utility model.
Fig. 2 is the cutaway view of led lamp second embodiment of the present utility model.
Fig. 3 is the cutaway view of led lamp the 3rd embodiment of the present utility model.
Fig. 4 is the cutaway view of led lamp the 4th embodiment of the present utility model.
Wherein, description of reference numerals is as follows:
Led lamp 100,100a, 200,200a
Radiating part 14
Connecting portion 16
Interior connecting portion 16a
Enclosing cover 30
Light-passing board 40
The specific embodiment
For making the purpose of this utility model, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now:
[first embodiment]
See also the cutaway view of led lamp of the present utility model first embodiment shown in Figure 1.Led lamp 100 of the present utility model includes housing 10, a luminescence unit 20 and a light-passing board 40 of a column.This housing 10 is preferably metal open circles housing, and its outer surface is formed with the radiating part 14 of a plurality of overshooting shapes.This luminescence unit 20 is contained in this housing 10, and this luminescence unit 20 includes a circuit board 22, reaches a plurality of light emitting diodes 24 that are arranged on this circuit board 22.
This light-passing board 40 is contained in this housing 10 and is positioned at this a plurality of light emitting diodes 24 tops, is preferably to be parallel to luminescence unit 20, has preferable efficient.Light-passing board 40 can be glass plate or soft sheet material, plastic plate for example, PET (Poly Ethylene Terephthalate for example, PETG), PP (polypropylene, polypropylene), PE (polyethylene, polyethylene), acrylic (acryl, or claim propylene).This light-passing board 40 is coated with at least a fluorescent material to change the light of those light emitting diodes 24.The mode of these light-passing board 40 coating fluorescent material can be after utilizing fluorescent material to admix colloid, is coated on this light-passing board 40 with spraying or in the mode of printing.Wherein Yin Shua mode can be to get on the mode roller coating of roller.
Led lamp 100 of the present utility model may further include a transparent enclosing cover 30 to cover this light-passing board 40.One of the utility model advantage is light-passing board 40 surface coating fluorescent material, when the light penetration light-passing board 40 of light emitting diode 24, not only can make its light even, and can save the brightness of selecting light emitting diode 24 and the formality of colourity, this enclosing cover 30 can be transparent, and the penetrance of unlikely reduction light.Wherein the end face both sides of this housing 10 respectively form a junction 16.The both side edges of this enclosing cover 30 respectively forms a flange connector 32 to be stuck in this connecting portion 16.
Form an accommodation section 12 to hold this luminescence unit 20 in this housing 10 among this embodiment.Wherein the section of this accommodation section 12 is cup-shaped substantially, and the light of light emitting diode 24 can pass through its inner surface reflection ray, penetrates this light-passing board 40 again.This circuit board 22 can be an aluminium base and have smooth reflecting surface, to increase the effect of reflection.This light-passing board 40 flatly places the below of this enclosing cover 30 in the present embodiment, and is resisted against the apical margin of this accommodation section 12.
The utility model separates light emitting diode and fluorescent material, makes fluorescent material away from the light emitting diode as thermal source with this, thereby the phenomenon that brightness decline and colourity are changed no longer takes place.Evenly mix in these housing 10 inside earlier by light in addition, need not select light emitting diode again.
[second embodiment]
Please refer to the cutaway view of led lamp of the present utility model second embodiment shown in Figure 2.The led lamp 100a of present embodiment and the difference of first embodiment are that light-passing board 40 is arcuation curved surfaces of semicircle tubular, and near this enclosing cover 30.In other words, light-passing board 40 is adjacent to the root edge of this enclosing cover 30.Wherein the end face both sides of this housing 10 respectively form connecting portion 16a in again, and the both sides of light-passing board 40 respectively are sticked in this interior connecting portion 16a.
This second embodiment shows that also the distance between luminescence unit 20 and the light-passing board 40 is adjustable, for example can adjust according to the effect of light emitting diode 24 photochromic (colour temperature) or brightness or lamp lighting.
The light-passing board 40 of above-mentioned two embodiment is to be diagram with tabular.Yet light-passing board also can be the profile of convex lens post, and the effect of optically focused is provided simultaneously.Light-passing board also can be circular-arc rectangular plate, is covered on these light emitting diodes 24.
[the 3rd embodiment]
See also the cutaway view of led lamp of the present utility model the 3rd embodiment shown in Figure 3.The led lamp 200 of this embodiment and the difference of first embodiment are, the utility model also can be applicable to the light fixture of bulb type, its middle shell 10 can be to be spherical, light-passing board 40 rounded flat boards, this enclosing cover 30 is the end face outer rim that the hemisphere shelly is stuck in housing 10, and the below of housing 10 connects a spiral helicine joint 50.
[the 4th embodiment]
See also the cutaway view of led lamp of the present utility model the 4th embodiment shown in Figure 4.The difference of present embodiment and the 3rd embodiment is that light-passing board 40 is the arcuation curved surface of hemisphere shelly substantially, and near this enclosing cover 30.Wherein the top edge of this housing 10 respectively forms connecting portion 16a in again, and the bottom peripheral edge of light-passing board 40 is sticked in this interior connecting portion 16a.
The above-mentioned mode that makes light emitting diode 24 cooperate light-passing board 40 to send white light can be utilized existing three kinds of illumination modes at present at least.
First kind, this light emitting diode is a blue light-emitting diode, and this fluorescent material is gold-tinted fluorescent material.Gold-tinted fluorescent material is meant the fluorescent material that blue light is converted to gold-tinted.For example, this gold-tinted fluorescent material is YAG (Yttrium-Aluminum-Garnet yttrium-aluminium-garnet) fluorescent material, or TAG (Terbium-Aluminum-Garnet terbium aluminium garnet) fluorescent material.The YAG main body is Y (yttrium), and the TAG main body is Tb (terbium), and YAG is good than TAG on luminous efficiency at present.
This blue light-emitting diode can be the InGaN blue light crystal grain of 460nm wavelength.Utilize blue-ray LED irradiation gold-tinted fluorescent material with the 555nm wavelength gold-tinted of generation with the blue light complementation, gold-tinted, the blue light with complementation mixed again, just can draw the required white light of naked eyes.
Second kind, this light emitting diode is a blue light-emitting diode, and this fluorescent material is green light fluorescent powder and red light fluorescent powder.Green/red fluorescent material is meant the fluorescent material that blue light is converted to green/red.For example, this green light fluorescent powder is Eu:SrGa
2S
4, red light fluorescent powder is Ag, Cl:ZnCdS.Wherein green/red fluorescent material can be coated same light-passing board, or coats two light-passing boards respectively, and two light-passing boards can utilize the structure of above-mentioned second embodiment to fix.
Utilize the emitted 460nm wavelength of blue light to excite green emitting phosphor (SrGa
2S
4: Eu
2+) and red fluorescence powder (Ca
1-∞Sr
∞S:Eu
2+), can obtain the green glow of 535nm wavelength and the ruddiness of 615nm respectively, green glow that these excited and ruddiness can obtain white light afterwards with blue light.
The third, this light emitting diode is ultraviolet light (UV) light emitting diode, this fluorescent material is green light fluorescent powder, red light fluorescent powder, and blue light fluorescent powder.Wherein this blue light fluorescent powder can be (BaMgAl
10O
17: Eu
2+).Similar fluorescent lamp behind high efficiency three looks of collocation or multicolor phosphor, will have better color rendering with the white light LEDs pattern of UV optical excitation fluorescent material.Ultraviolet light-emitting diodes for example can be used the UV-LED of wavelength 365nm.
In addition, also can cooperate fluorescent material, to allot the reference color temperature of 2000～10000K by the chip of different wave length.The fluorescent material of 380nm～480nm wavelength fit ruddiness, green glow and blue light for example, or 440nm～480nm wavelength fit gold-tinted fluorescent material, perhaps 440nm～480nm wavelength fit red light fluorescent powder adds gold-tinted fluorescent material, and perhaps 440nm～480nm wavelength fit red light fluorescent powder adds green light fluorescent powder.
Moreover the utility model further can also be adjusted by the distance between light-passing board and the luminescence unit, and one side can be controlled luminous intensity, and another side can make the colour temperature skew.For example the inner surface of housing can be provided with how right accommodation section, is arranged at different accommodation sections for light-passing board or luminescence unit, reaches the distance of adjusting between light-passing board and the luminescence unit with this.
The above exposure only is the utility model preferred embodiment, can not limit the interest field of this case with this, and therefore the equalization of being done according to this case application range changes or modifies, and still belongs to the scope that this case is contained.
Claims (10)
1. a led lamp is characterized in that, includes:
One housing;
One luminescence unit is contained in this housing, and this luminescence unit includes at least one light emitting diode; And
One light-passing board is fixed in this housing and is positioned at described at least one light emitting diode top, and this light-passing board is coated with at least a fluorescent material.
2. led lamp as claimed in claim 1 is characterized in that, this led lamp also comprises a transparent enclosing cover, and this enclosing cover is fixed in this housing, and wherein this light-passing board is positioned at the below of this enclosing cover.
3. led lamp as claimed in claim 2 is characterized in that, the end face both sides of this housing respectively form a junction, and the both side edges of this enclosing cover respectively forms a flange connector that is stuck in this connecting portion.
4. led lamp as claimed in claim 3 is characterized in that, the end face both sides of this housing also respectively form connecting portion in, and the both sides of this light-passing board are sticked in respectively in this interior connecting portion.
5. led lamp as claimed in claim 2 is characterized in that, the end face periphery of this housing forms a junction, and the periphery formation one of this enclosing cover is stuck in the flange connector of this connecting portion.
6. led lamp as claimed in claim 5 is characterized in that, the end face periphery of this housing also forms connecting portion in, and the peripheral snap of this light-passing board is in this in connecting portion.
7. led lamp as claimed in claim 1 is characterized in that, this light-passing board is a tabular.
8. led lamp as claimed in claim 1 is characterized in that, this light-passing board is the arcuation curved surface.
9. led lamp as claimed in claim 1 is characterized in that, this light-passing board is glass plate or soft board.
10. led lamp as claimed in claim 1 is characterized in that this enclosure interior forms an accommodation section, and the section of this accommodation section is cup-shaped, and this luminescence unit is contained in this accommodation section, and this light-passing board is fixed in the apical margin of this accommodation section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201548922U CN202091838U (en) | 2011-05-12 | 2011-05-12 | Light-emitting diode lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201548922U CN202091838U (en) | 2011-05-12 | 2011-05-12 | Light-emitting diode lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202091838U true CN202091838U (en) | 2011-12-28 |
Family
ID=45366905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201548922U Expired - Fee Related CN202091838U (en) | 2011-05-12 | 2011-05-12 | Light-emitting diode lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202091838U (en) |
-
2011
- 2011-05-12 CN CN2011201548922U patent/CN202091838U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160512 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |