CN201819066U

CN201819066U - LED (light emitting diode) lamp

Info

Publication number: CN201819066U
Application number: CN201020561081XU
Authority: CN
Inventors: 杨仲奎; 马晋昆
Original assignee: Yunnan Bangqiao Energy-Saving Science & Technology Co Ltd
Current assignee: Chongqing Glorycare Technology Co ltd; Yunnan Bangqiao Energy Saving Science & Technology Co ltd
Priority date: 2010-10-14
Filing date: 2010-10-14
Publication date: 2011-05-04
Anticipated expiration: 2020-10-14

Abstract

The utility model provides an LED (light emitting diode) lamp, comprising an LED lamp holder and a light output part, wherein the LED lamp holder comprises a lamp tube, an LED light source, an LED base and a group of lenses; the LED light source is installed on the LED base; the lenses are positioned in front of the LED light source and are used for focusing and emitting the light emitted by the LED light source so as to obtain uniformly distributed output light; the lenses comprise a first lens closest to the LED light source and a second lens positioned behind the first lens; the first lens is used for diffusing the light emitted by the LED light source; the second lens is used for rescattering and focusing the light passing through the first lens; and the light output part comprises a third lens for further focusing the light from the LED lamp holder. In the LED lamp provided by the utility model, a group of lenses in front of the LED light source are utilized to process the light emitted by the LED light source, thus obtaining uniformly distributed light.

Description

A kind of LED lamp

Technical field

The utility model relates to LED lamp field, relates in particular to a kind of LED lamp.

Background technology

Light emitting diode (LED) is a kind of solid-state semiconductor devices that electric energy can be converted into visible light.LED occur early stage, LED is through being usually used in the indicator lamp of various device, but along with the development of LED technology, LED begins progressively to be used for lighting field, LED-based lamp, i.e. LED lamp have therefore occurred.Because advantages such as that LED has is little such as volume, power consumption is low, long service life, high brightness, low in calories and environmental protection, therefore LED is used for lighting field exists application demand widely.

But to have directive property strong because LED is luminous, and therefore, the light that LED sends has light skewness and hot spot and problem such as relatively disperses, and in lighting field, wishes to obtain a kind of can evenly the distribution and lamp that hot spot is relatively concentrated usually.

In existing LED lamp, the processing of the light that LED is sent is comparatively simple, for example a kind of mode is light not to be handled at the light source place, but directly light-emitting window is arrived in anaclasis by speculum, adopt lens to come optically focused subsequently at the light-emitting window place, shadow appears in the optical illumination poor effect of this mode easily, and the uniformity is not high.Another kind of mode adopts two lens to come the light that led light source sends is handled, lens are arranged on the light source place and disperse the light that light source sends, the another one lens are arranged on the light-emitting window place and focus on the light of being dispersed, the output light that this mode obtains has the less and certain light distribution consistency degree of hot spot, but does not still reach the requirement of medically using.

Therefore desired is that a kind of can providing has high light distribution consistency degree, so that the LED lamp that can use in the field that optical uniformity is had relatively high expectations such as medical application.

The utility model content

The utility model aims to provide a kind of Novel LED light that can solve or partly address the above problem.

According to an aspect of the present utility model, a kind of LED lamp is provided, this LED lamp comprises LED lamp holder and light output part branch, it is characterized in that this LED lamp holder comprises: the lamp tube; Led light source; The LED seat that led light source is mounted thereto; And be in one group of lens before the led light source, the light that described led light source sent is focused on and processing such as emission, so that obtain equally distributed output light, these group lens comprise: first lens of close described led light source are used to spread the light that described led light source sends; And be positioned at second lens after described first lens, and being used for the light by described first lens is disperseed again and focuses on, wherein said light output part branch comprises: the 3rd lens further focus on the light from described LED lamp holder.

Utilize one group of lens that are positioned at before the led light source to come the light that led light source sends is handled according to LED lamp of the present utility model, thereby obtained equally distributed light.

Description of drawings

Describe the utility model in more detail referring now to accompanying drawing, wherein Fig. 1 shows the generalized section according to the LED lamp of an embodiment of the utility model.

The specific embodiment

Embodiment of the present utility model is described below with reference to the accompanying drawings.Fig. 1 shows the generalized section according to the LED lamp of an embodiment of the utility model.

As shown in Figure 1, the LED lamp comprises two parts on the whole, first is a LED lamp holder 100, wherein utilizes led light source to generate light and utilize optical lens group that the light that is generated is handled to make the light of launching from LED lamp holder 100 have certain optics uniformity; Second portion is that light output part divides 200, is used for based on the actual application requirements to handle the light that is fit to practical application to produce from the light of LED lamp holder 100.

LED lamp holder 100 has the shape of substantial cylindrical usually, end sealing, and light evenly penetrates from the other end.But can have difform LED lamp holder according to the actual conditions design.Describe concrete structure of the present utility model with the embodiment of cylinder form hereinafter, but it will be appreciated by those skilled in the art that the utility model is not limited to described embodiment, but can expand to the structure of any other shape.

LED lamp holder 100 comprises the shell of lamp tube 1 as the LED lamp holder, a plurality of parts in the LED lamp holder all are connected with lamp tube 1 so that be fixed on the lamp tube 1, lamp tube 1 usually by metal for example aluminium constitute so that the heat that produces in LED lamp holder 100 operation is dispersed into the outside fast.According to practical application, light output part divide 200 and LED lamp holder 100 can shared same lamp tube 1, also can use independent lamp tube.

LED lamp holder 100 comprises the LED seat 3 that led light source 2 and led light source 2 are mounted thereto.LED seat 3 is generally the material such as the metal (for example aluminium) that are beneficial to heat radiation and constitutes, and is convenient to distribute fast the heat that produces in led light source 2 operations.Because the characteristic of LED, the light that led light source 2 is produced has stronger directive property, in order to make the LED lamp holder can launch equally distributed light, need the light that led light source 2 is produced be further processed.For this reason, also comprise the one group of lens that is positioned at before the led light source according to LED lamp holder of the present utility model, the light that is used for that led light source is sent focuses on and processing such as emission, so that obtain equally distributed output light.

As shown in Figure 1, according to an embodiment of the present utility model, these group lens comprise two lens.First lens 4 of the most close led light source 2 are used to spread the light that led light source 2 sends.Being positioned at second lens 5 after first lens 4 on light path is used for the light by first lens 4 is disperseed again and focuses on.By the cooperation of these two lens, can obtain equally distributed light output.

Alternatively, these group lens can comprise and surpass two lens, for example arrange further lens again after second lens 5, are used for the light by second lens 5 is disperseed once more and focuses on.By adding further lens, can obtain equally distributed light output.

Alternatively, LED lamp holder 100 comprises that also being positioned at set of lenses hot spot afterwards regulates part 110.Hot spot adjusting portion branch comprises hot spot adjustable ring 6 and regulates light hurdle 7, wherein can rotate and regulate light hurdle 7 by rotation hot spot adjustable ring 6, and then rotate to regulate light hurdle sheet 8 in the light hurdle 7 regulating the size of exiting surface, thereby regulate the diameter of the hot spot that LED lamp holder 100 sends.According to a kind of embodiment, hot spot became big when hot spot adjustable ring 6 turned clockwise, and was rotated counterclockwise hot spot and diminished.Regulate the adjusting that part 110 can further strengthen the LED lamp holder is exported light by utilizing hot spot.

In addition, LED lamp holder 100 also comprises first stop ring 9 between first lens 4 and second lens 5, is used to limit the advancing light face size, guarantee the spacing between first lens 4 and second lens 5 and eliminate different light of exiting surface size, second lens 5 of first lens 4.

LED lamp holder 100 comprises also and being used for second lens 5 by the lens trim ring 10 that is pressed on the lamp tube that lens trim ring 10 can limit the exiting surface size of second lens 5 and each lens and first stop ring are crimped on together.

By using stop ring and use trim ring between lens, that can regulate each lens advances light and bright dipping size, thereby further regulates the spot size of the output light of LED lamp holder 100.

Light output part divides 200 to be positioned at after the LED lamp holder 100, is further processed according to the output light of practical application to LED lamp holder 100.As shown in Figure 1, according to an embodiment of the invention, the direction of light output is different with the transmit direction of the light that LED lamp holder 100 is generated, therefore, light output part divides 200 to comprise lamp tube elbow 11 with certain angle of bend, be positioned at the speculum 12 in lamp tube elbow 10 knees and be positioned at the 3rd lens 13 that the output optical position goes out.Speculum 12 can be according to the angle of bend of lamp tube elbow, and future is at anaclasis to the three lens 13 of LED lamp holder 100.13 pairs of light from LED lamp holder 100 of the 3rd lens further focus on, to form the hot spot and the uniformity of the required size of practical application.

Though having provided light output part, Fig. 1 divide 200 to have the parts that change light output direction, but this not necessarily, according to the practical application needs, may not need to change the direction of light output fully, therefore also just do not need to change the speculum 12 of light output direction, and lamp tube elbow 11 also can be straight-cylindrical.

Alternatively, be glass lens according to the lens in the LED lamp of the present utility model, at high temperature accelerate shortcomings such as aging, that service life is relatively short and the index of refraction in lens is low easily thereby can solve existing plastic lens.

Further alternatively, be the DO eyeglass according to the lens in the LED lamp of the present utility model, i.e. the multiple dielectric layer optical mirror slip.The stepped construction that the D0 eyeglass is pressed close to form mutually with the precision of micron by the diffraction grating of making at the glass lens surface accurate, thereby utilize diffraction optical element and refraction optical element on aberration, to have antipodal character, realized the camera lens of aberration in theory for " zero ".By adopting the DO eyeglass, can further improve the uniformity of output light and realize uniform hot spot as lens.

According to an embodiment of the present utility model, the LED light fixture has following size: the light face diameter that advances of first lens 4 is that 11mm and exiting surface diameter are 11.6mm; Second lens 5, speculum 12 and the 3rd lens 13 advance the light face and the exiting surface diameter is 13mm.

According to LED light fixture of the present utility model advantages such as output light is evenly distributed, hot spot is adjustable are arranged, be particularly useful for the medical illumination field, for example can be applicable to inspection illumination and operation floor lights such as ear-nose-throat department.Certainly, also be applicable to general illumination, for example can be used for industry field works at night such as railway, electricity side, public security, fire-fighting, iron and steel, oil field, be applicable to the various places of working at night according to LED lamp of the present utility model.

It should be noted that the foregoing description describes the utility model rather than the utility model is limited, and those skilled in the art can design alternative embodiment under the situation of the scope that does not break away from claims.In the claims, any reference symbol between bracket should be configured to restriction to claim.Word " comprises " not to be got rid of existence and is not listed in element or step in the claim.Being positioned at word " " before the element or " one " does not get rid of and has a plurality of such elements.

Claims

1. LED lamp, this LED lamp comprises LED lamp holder and light output part branch, it is characterized in that this LED lamp holder comprises:

The lamp tube;

Led light source;

The LED seat that led light source is mounted thereto; And

Be in one group of lens before the led light source, the light that described led light source sent is focused on and processing such as emission, so that obtain equally distributed output light, these group lens comprise:

First lens of close described led light source are used to spread the light that described led light source sends; And

Be positioned at second lens after described first lens, be used for the light by described first lens is disperseed again and focuses on,

Wherein said light output part branch comprises:

The 3rd lens further focus on the light from described LED lamp holder.

2. LED lamp as claimed in claim 1 is characterized in that, described LED lamp holder also comprises:

Be positioned at described group of lens hot spot afterwards and regulate part, described hot spot adjusting portion branch comprises:

Regulate the light hurdle, have the light hurdle sheet that to regulate the exiting surface size; And

The hot spot adjustable ring rotates described adjusting light hurdle by rotating described hot spot adjustable ring, and then rotates light hurdle sheet in the described adjusting light hurdle to regulate the size of exiting surface.

3. LED lamp as claimed in claim 1 is characterized in that, described light output part divides and also comprises:

Lamp tube elbow with certain angle of bend; And

Be positioned at the speculum in described lamp tube elbow knee, be used for arriving described the 3rd lens in the anaclasis of described LED lamp holder in the future.

4. LED lamp as claimed in claim 3 is characterized in that, described first, second is glass lens with the 3rd lens and refracting telescope.

5. LED lamp as claimed in claim 4 is characterized in that, described first, second is the multiple dielectric layer optical mirror slip with the 3rd lens and refracting telescope.

6. LED lamp as claimed in claim 1 is characterized in that, described LED lamp holder also comprises:

First stop ring between described first lens and second lens; And

With described second lens by the trim ring that is pressed on the described lamp tube.

7. as any the described LED lamp among the claim 1-6, it is characterized in that,

The light face diameter that advances of first lens is that 11mm and exiting surface diameter are 11.6mm;

Second lens advance the light face and the exiting surface diameter is 13mm; And

The 3rd lens advance the light face and the exiting surface diameter is 13mm.