CN201715441U

CN201715441U - Lamp shade for LED light bar

Info

Publication number: CN201715441U
Application number: CN2009202690580U
Authority: CN
Inventors: 刘兴贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-16
Filing date: 2009-11-16
Publication date: 2011-01-19
Anticipated expiration: 2019-11-16

Abstract

The utility model discloses a lamp shade for an LED light bar. The lamp shade adopts a strip-shaped optical PC (polycarbonate) part matched with the LED light bar, the cross section of the lamp shade is shaped like an Omega, the outer curved surface of the shade can be a cylindrical surface or a non-spherical surface, the transverse curvature can be invariable or gradually varied and has no inflection point, and the inner curved surface of the shade is a non-spherical surface, the curvature varies gradually and has more than one inflection point. The scheme can solve the problem of lower light utilization efficiency of the target irradiated area, which is caused by direct irradiation of the LED light bar or lower illumination intensity, insufficient lighting uniformity and over-large irradiation range attributing to the irradiation of the LED light bar used together with a traditional lamp shade.

Description

A kind of lampshade that is used for LED lamp bar

Technical field

The utility model relates to lighting apparatus, and especially the LED lighting field specifically is a kind of lampshade of the LED of being used for lamp bar.

Background technology

Led light source as green, energy-conservation, power saving, long-life lighting source of new generation and be a dark horse, extensively paid close attention to, its application more and more generally will replace traditional incandescent lamp and fluorescent tube gradually.As the power saving fluorescent lamps of LED important application also along with the development of LED is in the ascendant; yet because of the influence of the LED characteristics of luminescence; it is used the secondary light-distribution element of often will arranging in pairs or groups and uses; the lampshade effect as LED lamp bar secondary light-distribution element only rests on the protection light source on the market now; light source is not carried out effective secondary light-distribution, the minority lampshade carries out that anti-dazzle or simple secondary light-distribution are handled but is not fine because of it generally adopts sphere design light distribution effect.

The utility model content

At the above, the purpose of this utility model is to solve LED lamp bar direct irradiation or LED lamp bar to mix that traditional lampshade irradiation illumination is on the low side, the illumination uniformity is not enough, range of exposures is excessive causes target irradiation area light utilization efficiency problem on the low side.

For realizing this technical purpose, scheme of the present utility model is: a kind of lampshade of the LED of being used for lamp bar, described lampshade is the strip optics PC material pieces that is complementary with LED lamp bar, the cross section of described lampshade is the Ω shape, the assembly structure that comprises cover positive camber, cover negative camber and be used for engaging with lamp socket, wherein, the cover positive camber can be that cylinder also can be an aspheric surface, cross curvature can be constant also can be gradual change, do not have flex point; The cover negative camber is an aspheric surface, curvature gradual change and have more than one flex point.

As further improvement, described cover positive camber transversely curved profile is added with little groove.

As further improvement, lampshade can make up mutually by the All-in-One mode, forms the Combined lamp shade structure.

General protection and the assembling aesthetic problem of all only paying attention to light fixture of tradition lampshade rarely has consideration the light source of its collocation to be carried out the function of luminous intensity distribution.Even consider that it also is simple luminous intensity distribution that light source is carried out luminous intensity distribution, curved surface only adopts cylinder, curvature no change or change singlely, and no flex point is that the light source equal proportion that emits beam is narrowed.The light source led of collocation is approximate spot light now, the brightest in the middle of emitting beam toward successively decreasing all around, if the centre that can show zone of action irradiation again after only the light equal proportion being narrowed is bright excessively, because light fixture is applied to the plane mostly and shines now, it will be more obvious that bright phenomenon is crossed at the center.This product is just considered when design the plane is shone, introduce the aspheric surface technology of LED lens, lampshade is designed processing, the uniformity that makes this product not only converge to certain limit to light but also the plane is shone greatly improves, objectively through behind this product luminous intensity distribution, exposure intensity to the zone of action greatly improves, under the same illumination requirement through this lampshade luminous intensity distribution after required LED greatly reduce and saved the energy.

Description of drawings

Fig. 1 is the sectional view of embodiment one of the present utility model.

Fig. 2 is the sectional view of embodiment two of the present utility model.

Fig. 3 is the sectional view of embodiment three of the present utility model.

The specific embodiment

Product of the present utility model can adopt most of plastic materials to produce, and existing product is because of considering environmental protection, fire resistance, light transmittance and service life and adopt the PC material of optical grade.

As the structure of the wall scroll product of one of specific embodiment as shown in Figure 1.

(1) cover positive camber 1, cover negative camber 2 two parts are particular curvature, two curved surfaces will be used just and can reach actual effect;

(2) cover positive camber 1 can be that cylinder also can be an aspheric surface, from curvature say this curved surface cross curvature can be constant also can be gradual change, generally there is not flex point in its curvature;

(3) cover positive camber 2 is an aspheric surface, say that from curvature this curved surface cross curvature is gradual change, and there are several flex points in its curvature;

(4) 3 parts are assembly structure, are used for engaging with lamp socket, and in general be to cooperate with aluminium base, it is simple and practical easy to assembly.

General protection and the assembling aesthetic problem of all only paying attention to light fixture of tradition lampshade rarely has consideration the light source of its collocation to be carried out the function of luminous intensity distribution.Even consider to light source carry out luminous intensity distribution also be simple luminous intensity distribution (curved surface only adopts cylinder, the curvature no change or change single, no flex point), be that the light source equal proportion that emits beam is narrowed.The light source led of collocation is approximate spot light now, the brightest in the middle of emitting beam toward successively decreasing all around, if the centre that can show zone of action irradiation again after only the light equal proportion being narrowed is bright excessively, because light fixture is applied to the plane mostly and shines now, it will be more obvious that bright phenomenon is crossed at the center.This product is just considered when design the plane is shone, introduce the aspheric surface technology of LED lens, lampshade is designed processing, the uniformity that makes this product not only converge to certain limit to light but also the plane is shone greatly improves, objectively through behind this product luminous intensity distribution, exposure intensity to the zone of action greatly improves, under the same illumination requirement through this lampshade luminous intensity distribution after required LED greatly reduce and saved the energy.

As shown in Figure 2, be the anti-dazzle derived product of the utility model embodiment two, be on housing curved face 1, transversely curved profile adds little groove, can greatly reduce lampshade glare effect in use.

Be illustrated in figure 3 as the structure of many combinations (module), this lampshade is for increasing irradiation brightness, and ease of assembly can adopt the synthetic mode of many lampshades to make product.

The utility model is that lampshade is fastened on the aluminium base in use, and wherein, the bar that waits that the LED light-emitting component is installed is installed between lampshade and the aluminium base.

The above; it only is preferred embodiment of the present utility model; not in order to restriction the utility model, every foundation technical spirit of the present utility model to any trickle modification that above embodiment did, be equal to and replace and improve, all should be included within the protection domain of technical solutions of the utility model.

Claims

1. lampshade that is used for LED lamp bar, described lampshade is the strip optics PC material pieces that is complementary with LED lamp bar, and it is characterized in that: the cross section of described lampshade is the Ω shape, the assembly structure (3) that comprises cover positive camber (1), cover negative camber (2) and be used for engaging with lamp socket, wherein

The cover positive camber (1) can be that cylinder also can be an aspheric surface, cross curvature can be constant also can be gradual change, do not have flex point;

Cover negative camber (2) is an aspheric surface, curvature gradual change and have more than one flex point.

2. lampshade according to claim 1 is characterized in that: described cover positive camber (1) transversely curved profile is added with little groove (4).

3. lampshade according to claim 1 and 2 is characterized in that: described lampshade can make up mutually by the All-in-One mode, forms the Combined lamp shade structure.