CN102095114B

CN102095114B - LED (Light Emitting Diode) lamp tube with ultra-large lighting angle

Info

Publication number: CN102095114B
Application number: CN201110067438.8A
Authority: CN
Inventors: 孙涛; 孙琦
Original assignee: Wuxi Ray Tech Photoelectronic Technology Co Ltd
Current assignee: Wuxi Ray Tech Photoelectronic Technology Co Ltd
Priority date: 2011-03-21
Filing date: 2011-03-21
Publication date: 2014-11-26
Anticipated expiration: 2031-03-21
Also published as: CN102095114A

Abstract

The invention discloses an LED (Light Emitting Diode) lamp tube with an ultra-large lighting angle, which is prepared from one or several transparent materials of polycarbonate, PMMA (Polymethyl Methacrylate), glass and the like. The LED lamp tube disclosed by the invention comprises an incidence surface and an emergence surface which are opposite to an LED light source, wherein at least one surface of the incidence surface and the emergence surface is formed by combining multiple sections of arc surfaces with different curvatures in a radial direction, and multiple bulged parts are uniformly arranged on the external surface of the emergence surface, thereby forming multiple micro-convex lens structures. The light output of the LED lamp tube with the ultra-large lighting angle is fan-shaped output, thereby enlarging the lighting angle; under the same condition, the service number of daylight lamps in a unit area can be reduced, thereby achieving the purposes of saving energy sources and lowering the cost; and lighting regions are uniform, so that glare and visual fatigue are not easy to generate.

Description

The LED fluorescent tube of super large light angle

Technical field

The present invention relates to a kind of lighting assembly, relate in particular to a kind of LED fluorescent tube of super large light angle.

Background technology

" low-carbon economy " and " energy-saving and emission-reduction " become the direction of current new technology new forms of energy development, so the excellent performance of LED solid-state semiconductor lighting engineering aspect " green illumination " makes it be considered to the strategic power-saving technology of 21 century.Many countries and the city of China, Europe and North America have all been carried out the exploitation of LED lighting engineering and have widelyd popularize, and aspect room lighting, than fluorescent lamp, LED fluorescent lamp has the longer life-span, and the danger that does not exist mercury to reveal; In addition, LED day-light lamp also has better controllability and light efficiency.Optics aspect, the small light source characteristic of LED chip can accurately be controlled the direction of light than the optimal design that is easier to realize accurate luminous intensity distribution and secondary optics, and light is assigned on required space fully, prevents light pollution and dazzle.

The certain thickness arc-shaped structure of the most employing of LED fluorescent tube in the market,, through the luminous intensity distribution design of secondary optics, its photometric distribution is not lambertian distribution, and hot spot is circular, and the middle meeting of hot spot is brighter, and arriving around can be dimmed gradually.After this fluorescent lamp is installed, light directly enters human eye and easily causes visual fatigue.The problem such as uniformity, light distribution angle, dazzle that how to solve existing LED fluorescent tube, really realizes environmental protection and green illumination, becomes the emphasis of current research.

Summary of the invention

The LED fluorescent tube that the object of the present invention is to provide a kind of super large light angle, it is large that it has light angle, and field of illumination is even, is difficult for producing the feature of dazzle and visual fatigue.

The object of the invention is to be achieved through the following technical solutions:

A LED fluorescent tube for super large light angle, comprises the plane of incidence and exit facet with respect to LED light source, and wherein, it is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction that the described plane of incidence has one side at least with exit facet.

Especially, the described plane of incidence is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, the cambered surface radius of curvature of the plane of incidence is between 1～40mm, and described exit facet is being comprised of single circle of curvature cambered surface in the radial direction, and the radius of curvature of exit facet is between 1～20mm.

Especially, described exit facet is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, the cambered surface radius of curvature of exit facet is between 1～40mm, and the described plane of incidence is being comprised of single circle of curvature cambered surface in the radial direction, and plane of incidence radius of curvature is between 1～20mm.

Especially, the described plane of incidence is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, the cambered surface radius of curvature of the plane of incidence is between 1～40mm, described exit facet is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, and the cambered surface radius of curvature of exit facet is between 1～40mm.

Especially, on the outer surface of described exit facet, be evenly provided with several lug bosses, form several dimpling lens arrangements.

Especially, described fluorescent tube is to be made by any one or several transparent materials such as Merlon, PMMA, glass, and material therefor refractive index is between 1.2～1.8.

Especially, described fluorescent tube thickness range is 0.1mm～10mm.

Beneficial effect of the present invention is, the LED fluorescent tube light type of described super large light angle is output as fan-shaped output, and increased light angle, under square one, not only can reduce the usage quantity of fluorescent lamp in unit are, thereby reach the saving energy, the object reducing costs, and field of illumination is even, be difficult for producing dazzle and visual fatigue.

Accompanying drawing explanation

According to drawings and embodiments the present invention is described in further detail below.

Fig. 1 is the generalized section of the embodiment of the present invention one;

Fig. 2 is the side view of the embodiment of the present invention one fluorescent tube;

Fig. 3 is the lighting source light type figure of LED light source under common fluorescent tube effect;

Fig. 4 is the lighting source light type figure of LED light source under the fluorescent tube effect of the embodiment of the present invention one;

Fig. 5 be LED light source under common fluorescent tube effect in the interior space at 2m*2m, the illumination isogram on 0.85m height;

Fig. 6 be LED light source under the fluorescent tube effect of the embodiment of the present invention one in the interior space at 2m*2m, the illumination isogram on 0.85m height.

Fig. 7 is the side view of the embodiment of the present invention two fluorescent tubes;

Fig. 8 is the lighting source light type figure of LED light source under the fluorescent tube effect of the embodiment of the present invention two.

In figure:

1, LED light source; 2, fluorescent tube; 20, the plane of incidence; 21, exit facet; 22, lug boss.

The specific embodiment

Embodiment mono-:

Please refer to shown in Fig. 1 and Fig. 2, Fig. 1 is the generalized section of the embodiment of the present invention one; Fig. 2 is the side view of the embodiment of the present invention one fluorescent tube; In the present embodiment, the LED fluorescent tube 2 of described super large light angle is arranged on LED light source 1, described LED light source 1 is the LED chip that two row's symmetric array are arranged, its plane of incidence 20 emitting beam first by fluorescent tube 2 enters fluorescent tube 2, then from exit facet 21 out, be transmitted in air, the described plane of incidence 20 is by what form in some sections of different cambered surfaces of curvature in the radial direction, and radius of curvature is distributed between 6-22mm; Described exit facet 21 is circular, and described fluorescent tube 2 fluorescent tubes form at axial tension by polycarbonate transparent material radial section, and fluorescent tube thickness range is 1mm-3mm.

Please refer to shown in Fig. 3 and Fig. 4, Fig. 3 is the lighting source light type figure of LED light source under common fluorescent tube effect; Fig. 4 is the lighting source light type figure of LED light source under the fluorescent tube effect of the embodiment of the present invention one; In figure, can significantly find out, lambert's type output of LED light source 1, under the secondary optical design of fluorescent tube 2 of the present invention, is converted into fan-shaped output; Rising angle is increased to 130 ° from 110 °; In lighting angle, light intensity is more even.

Refer to shown in Fig. 5 and Fig. 6, Fig. 5 be LED light source under common fluorescent tube effect in the interior space at 2m*2m, the illumination isogram on 0.85m height; Fig. 6 be LED light source under the fluorescent tube effect of the embodiment of the present invention one in the interior space at 2m*2m, the illumination isogram on 0.85m height.In figure, can significantly contrast, in the identical situation of other parameters, than common fluorescent tube, adopt LED fluorescent tube of the present invention, can obtain stronger illumination, in like manner, adopt fluorescent tube of the present invention, can reach with LED light source still less same lighting requirement.

Embodiment bis-:

Please refer to shown in Fig. 7, Fig. 7 is the side view of the embodiment of the present invention two fluorescent tubes; In the present embodiment, the described plane of incidence 20 is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, the cambered surface radius of curvature of the plane of incidence 20, between 1～25mm, is evenly provided with several lug bosses 22 on the outer surface of described exit facet 21, form several dimpling lens arrangements.On the basis of embodiment mono-, the outer surface in exit facet 21 has increased dimpling lens arrangement.

Refer to shown in Fig. 4 and Fig. 8, Fig. 4 is the lighting source light type figure of LED light source under the fluorescent tube effect of the embodiment of the present invention one; Fig. 8 is the lighting source light type figure of LED light source under the fluorescent tube effect of the embodiment of the present invention two, in figure, can significantly contrast, in the situation that other parameters are identical, outer surface increase dimpling lens arrangement in exit facet 21 on the basis of the embodiment of the present invention one can increase light angle, from 130 °, is increased to 135 ° of left and right.

Above embodiment has just set forth basic principle of the present invention and characteristic, can the plane of incidence 20 be equally also circular, and exit facet 21 is comprised of the some sections of different cambered surfaces of curvature; Or the plane of incidence 20 forms by the some sections of different cambered surfaces of curvature with exit facet 21.The present invention is not limited by above-mentioned example, and without departing from the spirit and scope of the present invention, the present invention also has various variations and change, and these variations and change all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims

1. a LED fluorescent tube for super large light angle, comprises the plane of incidence (20) and exit facet (21) with respect to LED light source (1), it is characterized in that:

The described plane of incidence (20) is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, and the cambered surface radius of curvature of the plane of incidence (20) is between 1～40mm;

On the outer surface of described exit facet (21), be evenly provided with several lug bosses (22), form several dimpling lens arrangements, described exit facet (21) is being to be combined by the some sections of different cambered surfaces of curvature in the radial direction, and the cambered surface radius of curvature of exit facet (21) is between 1～40mm;

Described fluorescent tube (2) is to be made by Merlon, PMMA, any one or several transparent materials of glass, and material therefor refractive index is between 1.2～1.8.

2. the LED fluorescent tube of any super large light angle according to claim 1; It is characterized in that: described fluorescent tube (2) thickness range is 0.1mm～10mm.