CN102095114A

CN102095114A - LED (Light Emitting Diode) lamp tube with ultra-large lighting angle

Info

Publication number: CN102095114A
Application number: CN2011100674388A
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: 2011-06-15
Anticipated expiration: 2031-03-21
Also published as: CN102095114B

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 present 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 of China, Europe and North America and city have all been carried out the exploitation of LED lighting engineering and have been widelyd popularize, and aspect room lighting, than fluorescent lamp, the LED fluorescent lamp has the longer life-span, and the danger that does not exist mercury to reveal; In addition, LED fluorescent lamp lamp also has better controllability and light efficiency.The 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 the required space fully, prevents light pollution and dazzle.

The LED fluorescent tube adopts certain thickness arc-shaped structure mostly in the market, the luminous intensity distribution design of process secondary optics, and its photometric distribution is not a lambertian distribution, hot spot is circular, and the middle of hot spot can be brighter, to deepening gradually on every side.After this fluorescent lamp was installed, light directly entered human eye and causes visual fatigue easily.How to solve the problems such as uniformity, luminous intensity distribution angle, dazzle of existing LED fluorescent tube, really realize environmental protection and green illumination, become the emphasis of present research.

Summary of the invention

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

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

A kind of LED fluorescent tube of 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 different cambered surface of plurality of sections 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 different cambered surface of plurality of sections 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 made up 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 different cambered surface of plurality of sections 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 made up 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 different cambered surface of plurality of sections 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 different cambered surface of plurality of sections curvature in the radial direction, and the cambered surface radius of curvature of exit facet is between 1～40mm.

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

Especially, described fluorescent tube is to be made by any or several transparent material such as Merlon, PMMA, glass, and the 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 the unit are, thereby reach energy savings, the purpose that reduces cost, and the field of illumination is even, is difficult for producing dazzle and visual fatigue.

Description of drawings

With embodiment the present invention is described in further detail with reference to the accompanying drawings below.

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

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

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

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

Fig. 7 is the side view of the embodiment of the 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 invention two.

Among the figure:

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

The specific embodiment

Embodiment one:

Please refer to Figure 1 and Figure 2, Fig. 1 is the generalized section of the embodiment of the invention one; Fig. 2 is the side view of the embodiment of the invention one fluorescent tube; In present embodiment, the LED fluorescent tube 2 of described super large light angle is arranged on the led light source 1, described led light source 1 is the led chip that two row's symmetric array are arranged, its first plane of incidence 20 by fluorescent tube 2 that emits beam enters fluorescent tube 2, come out from exit facet 21 then, be transmitted in the air, the described plane of incidence 20 is by what form in the cambered surface that plurality of sections curvature is different in the radial direction, and radius of curvature is distributed between the 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 the fluorescent tube thickness range is 1mm-3mm.

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

See also Fig. 5 and shown in Figure 6, Fig. 5 be led light source in the interior space at 2m*2m under the common fluorescent tube effect, the illumination isogram on the 0.85m height; Fig. 6 be led light source in the interior space at 2m*2m under the fluorescent tube effect of the embodiment of the invention one, the illumination isogram on the 0.85m height.Can significantly contrast among the figure, under 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 same lighting requirement with led light source still less.

Embodiment two:

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

See also Fig. 4 and shown in Figure 8, Fig. 4 is the lighting source light type figure of led light source under the fluorescent tube effect of the embodiment of the 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 invention two, can significantly contrast among the figure, under the identical situation of other parameters, outer surface increase dimpling lens arrangement in exit facet 21 on the basis of the embodiment of the invention one can increase light angle, is increased to about 135 ° from 130 °.

Above embodiment has just set forth basic principle of the present invention and characteristic, can the plane of incidence 20 be circular equally also, and exit facet 21 is made up of the different cambered surface of plurality of sections curvature; Perhaps the plane of incidence 20 and exit facet 21 are formed by the different cambered surface of plurality of sections curvature.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. the LED fluorescent tube of a super large light angle, comprise the plane of incidence (20) and exit facet (21) with respect to led light source (1), it is characterized in that: it is being to be combined by the different cambered surface of plurality of sections curvature in the radial direction that the described plane of incidence (20) has one side at least with exit facet (21).

2. the LED fluorescent tube of super large light angle according to claim 1; It is characterized in that: the described plane of incidence (20) is being to be combined by the different cambered surface of plurality of sections curvature in the radial direction, the cambered surface radius of curvature of the plane of incidence (20) is between 1～40mm, described exit facet (21) is being made up of single circle of curvature cambered surface in the radial direction, and the radius of curvature of exit facet (21) is between 1～20mm.

3. the LED fluorescent tube of super large light angle according to claim 1; It is characterized in that: described exit facet (21) is being to be combined by the different cambered surface of plurality of sections curvature in the radial direction, the cambered surface radius of curvature of exit facet (21) is between 1～40mm, the described plane of incidence (20) is being made up of single circle of curvature cambered surface in the radial direction, and the plane of incidence (20) radius of curvature is between 1～20mm.

4. the LED fluorescent tube of super large light angle according to claim 1; It is characterized in that: the described plane of incidence (20) is being to be combined by the different cambered surface of plurality of sections curvature in the radial direction, the cambered surface radius of curvature of the plane of incidence (20) is between 1～40mm, described exit facet (21) is being to be combined by the different cambered surface of plurality of sections curvature in the radial direction, and the cambered surface radius of curvature of exit facet (21) is between 1～40mm.

5. the LED fluorescent tube of super large light angle according to claim 2; It is characterized in that: evenly be provided with several lug bosses (22) on the outer surface of described exit facet (21), form several dimpling lens arrangements.

6. according to the LED fluorescent tube of described any super large light angle of claim 1-5; It is characterized in that: described fluorescent tube (2) is to be made by any or several transparent material such as Merlon, PMMA, glass, and the material therefor refractive index is between 1.2～1.8.

7. according to the LED fluorescent tube of described any super large light angle of claim 1-5; It is characterized in that: described fluorescent tube (2) thickness range is 0.1mm～10mm.