CN202993058U

CN202993058U - LED lamp polarizing lens

Info

Publication number: CN202993058U
Application number: CN2012206655535U
Authority: CN
Inventors: 许靖; 邱伟前; 张志强; 焦丽华; 赵宇波
Original assignee: Guangzhou Institute of Advanced Technology of CAS
Current assignee: Guangzhou Institute of Advanced Technology of CAS
Priority date: 2012-12-05
Filing date: 2012-12-05
Publication date: 2013-06-12
Anticipated expiration: 2022-12-05

Abstract

The utility model relates to a polarizing lens for an LED lamp, which comprises a clamping part at the bottom, an arc lens at the middle and a V-shaped lens at the top. The clamping part includes two straight line slots parallel to each other. The two straight line slots extend along the length direction of the polarizing lens of the LED lamp, the arc lens spans between the two straight line slots, the V-shaped lens is connected to the top of the arc lens, and is connected to the arc lens One-piece molding setup. When the LED lamp polarizing lens of the utility model is used, it can be installed between the two doors of a double-door refrigerator. cause irritation. The LED lamp polarizing lens of the utility model can make the light irradiate each space of the double-door refrigerator, improve the light utilization rate, relatively reduce the power consumption of the LED light bar, and have obvious energy-saving efficiency, which is in line with the national energy-saving and emission-reduction advocacy, and has the advantages of Broad market prospects.

Description

A kind of LED lamp spreadlight lens

Technical field

The utility model relates to the LED lighting engineering, is specifically related to a kind of backlighted LED lamp of double-door refrigerator spreadlight lens that is applied to.

Background technology

At present, double-door refrigerator has begun to adopt the LED lamp as illuminating lamp, but mostly is arranged at the top in refrigerator inside, can not shine the refrigerator bottom.In addition, use LED lamp of the prior art, light source position can't be hidden, and easily makes the direct directive human eye of light, and human eye is caused stimulation, causes discomfort to the people.In prior art, the light losing of LED polarized lamp is more, and the polarisation irradiating angle is less than normal, and efficient is lower, and when shadow shield was arranged, illumination efficiency was more not enough.

Along with the increase of national income, people are more and more higher to the class requirement of household appliances, and double-door refrigerator will become main flow gradually, corresponding illumination scheme also need improve, therefore, be necessary the application characteristic for double-door refrigerator, the spreadlight lens of existing LED lamp is improved.

The utility model content

Stimulate human eye, light is hidden, light efficiency is low, irradiating angle is less than normal deficiency in order to overcome existing double-door refrigerator illuminating lamp, the utility model provides a kind of and light can have been setovered to the LED lamp spreadlight lens of both sides, through after this LED lamp spreadlight lens, the light that projects not only can not cause stimulation to human eye, can also increase the refrigerator inside illuminance, improve light utilization.

For achieving the above object, the utility model by the following technical solutions:

A kind of LED lamp spreadlight lens, it comprises the Access Division that is positioned at the bottom, the V-type lens that are positioned at the curved lenses at middle part and are positioned at the top, described Access Division comprises two straight line draw-in grooves that are parallel to each other, described two straight line draw-in grooves extend along the length direction of LED lamp spreadlight lens, described curved lenses is connected across between two straight line draw-in grooves, described V-type lens are connected in the top of curved lenses, and with the one-body molded setting of curved lenses.

Described V-type lens are included in first to fourth curved surface that joins successively on LED lamp spreadlight lens width, and first, second curved surface and the 3rd, the 4th curved surface are symmetrically distributed in the normal both sides at curved lenses top.

The angle of described the second curved surface and the 3rd curved surface and described normal is that 50 degree are to 60 degree.

The angle of described first surface and the second curved surface be 20 degree to 30 degree, to be 20 degree spend to 30 the angle of the 3rd curved surface and the 4th curved surface.

Described curved lenses and the V-type lens lens for being made by transparent or semitransparent pmma plastics.

When the LED lamp spreadlight lens that the utility model provides uses, can be arranged in the middle of two fan doors of double-door refrigerator, after light process LED lamp spreadlight lens, toward the both sides irradiation, light can directly to the direction projection of refrigerator open, can not cause stimulation to human eye.The LED lamp spreadlight lens that the utility model provides when making light shine each space of double-door refrigerator, has improved light utilization, relative reduce the power consumption of LED lamp bar, energy-saving efficiency is obvious, meets advocating of national energy-saving reduction of discharging, has wide market prospects.

Description of drawings

Fig. 1 is the perspective view of the utility model embodiment.

Fig. 2 is the profile of the utility model embodiment.

The drawing reference numeral explanation

The first straight line draw-in groove 11 second straight line draw-in groove 12 curved lenses 2

V-type lens 3 first surface 31 second curved surfaces 32

The 3rd curved surface 33 the 4th curved surface 34 LED lamp bars 4

Normal A

The specific embodiment

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figure 1, LED lamp spreadlight lens of the present utility model comprises the Access Division that is positioned at the bottom, is positioned at the curved lenses 2 at middle part and is positioned at the V-type lens 3 at top.Particularly, described Access Division comprises the first straight line draw-in groove 11 and the second straight line draw-in groove 12 that is parallel to each other, and described the first straight line draw-in groove 11 and the second straight line draw-in groove 12 extend along the length direction of LED lamp spreadlight lens, make whole LED lamp spreadlight lens be strip.Described curved lenses 2 is connected across between the first straight line draw-in groove 11 and the second straight line draw-in groove 12, and described V-type lens 3 are fixedly connected on the top of curved lenses 2.Described curved lenses 2 and V-type lens 3 adopt transparent or semitransparent pmma plastics as material, are shaped to one.

Particularly, as shown in Figure 2, described V-type lens 3 are included in first surface 31, the second curved surface 32, the 3rd curved surface 33 and the 4th curved surface 34 that joins successively on LED lamp spreadlight lens width, and first and second curved surface and third and fourth curved surface are symmetrically distributed in the normal A both sides at curved lenses 2 tops.Particularly, first surface 31 and the 4th curved surface 34 are symmetrical about described normal A, and the second curved surface 32 and the 3rd curved surface 33 are symmetrical about described normal A.

The curved lenses 2 of the LED lamp spreadlight lens of the utility model embodiment and the curvature portion of V-type lens 3 calculate through careful analog simulation and parameter optimization makes that the light deflection angle is large, range of exposures is wide, make light in the 3 places generation total reflection of V-type lens, thereby avoided light to carrying out direct projection in the middle part of lens, then the part that need to throw light in directive both sides has improved luminous efficiency.Particularly, described the second curved surface 32 and the 3rd curved surface 33 are that 50 degree are to 60 degree with the angle of described normal A.The angle of the angle of described first surface 31, the second curved surface 32 and the 3rd curved surface 33, the 4th curved surface 34 equates, is 20 degree to 30 degree.

The LED lamp spreadlight lens of the utility model embodiment can coordinate LED lamp bar 4 uses of adopting the encapsulation of lineal layout formula paster.Described LED lamp bar 4 is installed on the centre of the first draw-in groove 11 and the second draw-in groove 12.After lens were installed, LED lamp bar 4 was to lens middle parts throw light.It is inner that light enters LED lamp spreadlight lens from the inside concave curved surface of curved lenses 2, and refraction effect occurs.Part light penetrates from the convex surface of the both sides external of curved lenses 2, and a part of light is at the second curved surface 32 and the 3rd curved surface 33 of the inner directive V-type of lens lens 3 in addition.Because the slope of the second curved surface 32 and the 3rd curved surface 33 is larger, the critical angle of total reflection occurs in the pmma plastics less than light from inner directive the second curved surface 32 of lens and the light of the 3rd curved surface 33 and the angle of described normal A, cause light on the second curved surface 32 and the 3rd curved surface 33, total reflection to occur, and directive first surface 31 and the 4th curved surface 34, and then penetrate to LED lamp spreadlight lens is outside from first surface 31 and the 4th curved surface 34.The light that penetrates from first surface 31 and the 4th curved surface 34 and the convex surface from curved lenses 2 penetrate light and converge in the lens outsides, have namely reached the effect of polarisation, and the light that LED lamp bar 4 is sent has been partial to lens both sides.

By regulating the curvature of curved lenses 2, and the slope of first surface 31, the second curved surface 32, the 3rd curved surface 33 and the 4th curved surface 34, can control the angle of polarisation, adapt to polarisation power in different occasions and practical situations and the requirement of angle.

The utility model utilizes the total reflection principle of material surface, changes the part light trend of injecting lens inside, thereby has reached the purpose of polarisation, and polarizing angle can reach 80 degree.

The above embodiment has only expressed preferred embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1. A polarized lens for LED lamps, characterized in that it includes a clamping part at the bottom, a curved lens at the middle and a V-shaped lens at the top, the clamping part includes two parallel straight line slots, The two straight line slots extend along the length direction of the polarizing lens of the LED lamp, the arc lens spans between the two straight line slots, the V-shaped lens is connected to the top of the arc lens, and is connected to the arc Lens integral molding set.

2. The LED lamp polarizing lens according to claim 1, wherein the V-shaped lens comprises first to fourth curved surfaces successively connected in the width direction of the LED lamp polarizing lens, and the first, second curved surfaces and The third and fourth curved surfaces are symmetrically distributed on both sides of the normal line at the top of the curved lens.

3 . The LED lamp polarizing lens according to claim 2 , wherein the included angle between the second curved surface and the third curved surface and the normal is 50° to 60°.

4. The LED lamp polarizing lens according to claim 3, wherein the included angle between the first curved surface and the second curved surface is 20° to 30°, and the included angle between the third curved surface and the fourth curved surface is 20° to 30 degrees.

5. The LED lamp polarizing lens according to claim 1, characterized in that, the curved lens and the V-shaped lens are lenses made of transparent or translucent pmma plastic.