CN202469623U

CN202469623U - LED spotlight

Info

Publication number: CN202469623U
Application number: CN2012200719266U
Authority: CN
Inventors: 施杰军
Original assignee: NINGBO AIKE LIGHTING TECHNOLOGY CO LTD
Current assignee: NINGBO IKE LIGHTING CO., LTD.
Priority date: 2012-02-29
Filing date: 2012-02-29
Publication date: 2012-10-03
Anticipated expiration: 2022-02-28

Abstract

The utility model discloses an LED spotlight, which includes an LED lighting unit and a light-focusing unit, wherein the light-focusing unit includes a lens assembly and a reflecting shade taking the shape of a circular truncated cone; the lens assembly includes a partial hemispherical first lens and a cylindrical second lens which are arranged as an integrated body; the outer circumferential surface of the second lens is connected with the outer peripheral face of the first lens; a cylindrical hole at the center and a lamp slot surrounding the periphery of the cylindrical hole are arranged at the bottom of the first lens; a mounting hole is arranged at the bottom center of the reflecting shade; the second lens extends to the reflecting shade from the mounting hole; the inner side surface of the reflecting shade is equally divided into a plurality of plane reflection unit groups in the circumferential direction; each plane reflection unit group consists of a plurality of plane reflection units arranged in the height direction; and the included angle of every two adjacent plane reflection units in the height direction ranges from 175 degree to 179 degree. The LED spotlight has the advantages of lower cost, soft light rays and high irradiation intensity.

Description

A kind of LED spotlight

Technical field

The utility model relates to a kind of LED lamp, especially relates to a kind of LED spotlight.

Background technology

Along with the develop rapidly of China's illuminating industry, LED is widely used in the lighting as a kind of high efficiency light source.The LED spotlight is mainly used in the high strength irradiation of specific region or object as a kind of new LED light fixture.Because the LED spotlight than higher, generally through a plurality of LED luminescence units are set improves light illumination in the existing LED spotlight to the requirement of irradiate light intensity.Though a plurality of LED luminescence units in the LED spotlight are densely arranged; But each LED luminescence unit is separate; So that the light of a plurality of LED emitted is more at random; Concentrate inadequately, the dazzling and exposure intensity of light is difficult to reach requirement, and the increase of LED luminescence unit has also increased the cost of LED spotlight accordingly in addition.

Summary of the invention

The utility model technical problem to be solved provides the LED spotlight that a kind of cost is lower, light is soft and exposure intensity is high.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of LED spotlight; Comprise LED luminescence unit and light focusing unit; Described light focusing unit comprises the reflection shield of lens subassembly and truncated cone bench-type; Described lens subassembly comprises hemispheric first lens of the part that is wholely set and columniform second lens; The outer circumference surface of described second lens is connected with the outer peripheral face of described first lens, and the bottom centre place of described first lens is provided with cylindrical hole and is centered around described cylindrical hole light trough on every side, and the bottom centre place of described reflection shield is provided with installing hole; Described second lens stretch into the described reflection shield from described installing hole; The medial surface of described reflection shield along the circumferential direction evenly is divided into a plurality of plane reflections unit group, and each described plane reflection unit group is made up of a plurality of plane reflections unit of arranging along short transverse, is 175 degree ~ 179 degree along the angle between two whenever adjacent described plane reflection unit of short transverse.

The quantity of described plane reflection unit group is 10 ~ 36, and the quantity of the plane reflection unit in described each plane reflection unit group is 3 ~ 10.

The lower edge of the upper edge of described reflection shield and described first lens is provided with outward extending locating flange.

The center, upper end of described second lens is provided with the rounding taper hole.

Compared with prior art; The advantage of the utility model be the light of LED emitted at first reflect through first lens and reflect after converge to the upper surface of second lens, light carries out total internal reflection through a plurality of plane reflections unit of reflection shield medial surface again after the surface emitting of second lens then, first lens and second lens converge the back with the spot light emission of LED emitted and form area source; Avoided the dispersion waste of light; Improve the exposure intensity of light, area source further enlarges the surface of emission of light again through the reflection shield reflection; On the basis of improving light intensity, make light evenly soft; Can not stimulate eyes, and owing to only need use a LED luminescence unit in the utility model, cost is lower;

When the lower edge of the upper edge of reflection shield and first lens is provided with outward extending locating flange, can be so that install and cooperate;

When the center, upper end of erection column is provided with the turbination hole; The surface that will converge to round taper hole after the light of LED emitted at first will reflect and reflect through first lens forms area source; Further increase the surface of emission, improved the even soft property and the exposure intensity of light.

Description of drawings

Fig. 1 is the perspective view of the reflection shield of the utility model;

Fig. 2 be the utility model reflection shield vertical view;

Fig. 3 is the perspective view of the lens subassembly among the embodiment one of the utility model;

Fig. 4 is the side view of the lens subassembly of the utility model;

Fig. 5 is the upward view of the lens subassembly of the utility model;

Fig. 6 is the perspective view of the lens subassembly among the embodiment two of the utility model.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment one: a kind of LED spotlight; Comprise LED luminescence unit (not shown) and light focusing unit; Light focusing unit comprises the reflection shield 2 of lens subassembly 1 and truncated cone bench-type; Lens subassembly 1 comprises hemispheric first lens 11 and columniform second lens 12 of the part that is wholely set; The outer circumference surface of second lens 12 is connected with the outer peripheral face of first lens 11, and the bottom centre place of first lens 11 is provided with cylindrical hole 111 and is centered around cylindrical hole light trough 112 on every side, and the bottom centre place of reflection shield 2 is provided with installing hole 21; Second lens 12 stretch into the reflection shield 2 from installing hole 21; The medial surface of reflection shield 2 along the circumferential direction evenly is divided into a plurality of plane reflections unit group 22, and each plane reflection unit group 22 is made up of a plurality of plane reflections unit 221 of arranging along short transverse, is 175 degree ~ 179 degree along the angle between two whenever adjacent plane reflection unit 221 of short transverse.

In the above-mentioned specific embodiment, the quantity of plane reflection unit group 22 is 10 ~ 36, and the quantity of the plane reflection unit 221 in each plane reflection unit group 22 is 3 ~ 10.

In the above-mentioned specific embodiment, the lower edge of the upper edge of reflection shield 2 and first lens 11 is provided with outward extending locating flange.

The operation principle of present embodiment is: the light of LED emitted at first reflect through first lens 11 and reflect after converge to the upper surface of second lens 12; This moment, the light of LED emitted was converted into area source by spot light; And avoided the radiative dispersion waste of LED luminescence unit; Improved irradiate light intensity; Area source carries out total internal reflection through a plurality of plane reflections unit 221 of reflection shield 2 medial surfaces again after the upper surface emission of second lens 12, further enlarge the surface of emission of light, on the basis of improving light intensity, makes light soft evenly.

If adopt in the present embodiment power be 75 watts LED lamp pearl as the LED luminescence unit, the luminous intensity of the utility model is measured, the luminous intensity that can obtain the LED spotlight is 5525 candelas; And traditional LED spotlight, if adopt a power be 75 watts LED lamp pearl as the LED luminescence unit, its luminous intensity is merely 1700 candelas, adopt three power be 75 watts LED lamp pearl as the LED luminescence unit, its luminous intensity just is 5100 candelas.Hence one can see that, and the utility model adopts less LED luminescence unit to obtain bigger luminous intensity.

Embodiment two: present embodiment and embodiment one are basic identical; Its difference only is that the center, upper end of second lens 12 is provided with rounding taper hole 121; The light of LED emitted forms area source through first lens, 11 backs on the surface of rounding taper hole 121; With respect to embodiment one, increased the emission area of area source.

Claims

1. LED spotlight; Comprise LED luminescence unit and light focusing unit; It is characterized in that described light focusing unit comprises the reflection shield of lens subassembly and truncated cone bench-type; Described lens subassembly comprises hemispheric first lens of the part that is wholely set and columniform second lens; The outer circumference surface of described second lens is connected with the outer peripheral face of described first lens, and the bottom centre place of described first lens is provided with cylindrical hole and is centered around described cylindrical hole light trough on every side, and the bottom centre place of described reflection shield is provided with installing hole; Described second lens stretch into the described reflection shield from described installing hole; The medial surface of described reflection shield along the circumferential direction evenly is divided into a plurality of plane reflections unit group, and each described plane reflection unit group is made up of a plurality of plane reflections unit of arranging along short transverse, is 175 degree ~ 179 degree along the angle between two whenever adjacent described plane reflection unit of short transverse.

2. a kind of LED spotlight according to claim 1 is characterized in that the quantity of described plane reflection unit group is 10 ~ 36, and the quantity of the plane reflection unit in described each plane reflection unit group is 3 ~ 10.

3. a kind of LED spotlight according to claim 1 is characterized in that the upper edge of described reflection shield and the lower edge of described first lens are provided with outward extending locating flange.

4. a kind of LED spotlight according to claim 1 is characterized in that the center, upper end of described second lens is provided with the rounding taper hole.