CN201162968Y

CN201162968Y - Hot cathode fluorescent lamp desk lamp without electromagnetic radiation interference

Info

Publication number: CN201162968Y
Application number: CNU2008200832633U
Authority: CN
Inventors: 葛世潮
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-18
Filing date: 2008-02-18
Publication date: 2008-12-10
Anticipated expiration: 2018-02-18

Abstract

The utility model relates to a electromagnetic radiated interference-free hot cathode fluorescent desk lamp, comprising a hot cathode fluorescent tube, a light tube fixed lamp cap and an electric connector thereof, a light tube fixed device, a lamp shade, an optical reflector, a lamp bracket, a lamp holder, a high frequency electronic ballast of the light tube, a switch, an eclectically connecting wire and an electrical plug; and a light emergent window of the lamp shade is provided with a conductive transmission plate, the surface of the lamp shade or the optical reflector is also provided with a conductive layer, the conductive transmission plate and the conductive layer of the lamp shade or the optical reflector is earthed through the electrically connecting wire and the electrical plug, the ballast and a connecting wire between the light tube and the ballast are also shield earthed, so electromagnetic radiation emitted from the fluorescent light tube and the ballast can be shielded, and human bodies are prevented from being affected by the electromagnetic radiation, thereby protecting human health.

Description

The hot-cathode fluorescent lamp desk lamp that electromagnetic-radiation-free disturbs

Technical field

The utility model relates to a kind of fluorescent lamp desk lamp, the hot-cathode fluorescent lamp desk lamp that the electromagnetic-radiation-free of the high-frequency electronic ballast work of especially a kind of usefulness tens kHz disturbs is used for illumination.

Background technology

The hot-cathode fluorescent lamp desk lamp of prior art is the high-frequency electronic ballast driving fluorescent tube of 24-50kHz mostly with frequency.Its advantage is the luminous efficiency height; The cycle of high-frequency electrical is much smaller than the persistence of luminescent material, no high frequency stroboscopic; If with the high-quality ballast, also can eliminate frequency multiplication stroboscopic after AC power 50 or the 60Hz rectification substantially.At present, this class lamp is called as no stroboscopic eye-protecting lamp.But the high-frequency electrical of tens kHz works in several watts to twenties watts fluorescent tube, can produce tangible electromagnetic radiation, and when particularly using desk lamp, people's head distance fluorescent tube is very near, only about 20-30 centimetre, this electromagnetic radiation may produce harmful effect to human body.

For this reason, the DC fluorescent lamp desk lamp that had occurred a kind of fluorescent tube electromagnetic-radiation-free in recent years, the direct current work of its fluorescent tube causes the fluorescent tube difficulty of steady operation for a long time with the method for timing automatic change direct current direction, the mercury electrophoresis that overcome DC fluorescent lamp simultaneously.But timing automatic change direct current direction for lamp tube electrode, be equivalent to regularly open and close, because each electrode from anode be transformed into negative electrode, all will be through forming the process of focus behind the cathode glow discharging, even anode electrode preheating when lamp works also is like this, positive ion bombardment during this glow discharge will cause electronic emission material sputter, shorten fluorescent tube service life, just as the every switch of common thermal cathode fluorescent tube once, life-span of fluorescent tube will shorten 1-3 hour.For DC fluorescent lamp, if changed the direct current direction once automatically in per 30 minutes, per hour promptly be equivalent to switch once, and once calculate the life-span of existing alternating-current fluorescent lamp mostly with per 4 hours switches, promptly this DC fluorescent lamp is compared with existing alternating-current fluorescent lamp, its life-span will shorten about 4 times.In addition, the system effectiveness of DC fluorescent lamp is lower than the fluorescent lamp of alternating electron ballast, also is its deficiency.

At present, the electromagnetic radiation of tens kHz to the influence of human body and the optical frequency more than the 100Hz dodge influence to human eye have much, all also among research and discussing, but the two does not all have benefit, all may have harmful effect human body and human eye, energy is eliminated or is eliminated them substantially, is desirable certainly for a good desk lamp; Wait for that proof exists those harmful effects to mend the fold after the sheep is lost later on again, be worthless really.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, and the hot-cathode fluorescent lamp of the electromagnetic-radiation-free interference of the electromagnetic-radiation-free interference of the high-frequency electronic ballast work of a kind of usefulness tens kHz, no stroboscopic, long service life is provided.

The purpose of this utility model is finished by following technical solution, it comprises a thermal cathode fluorescent tube, fluorescent tube fixedly lamp holder and electric connector thereof, a fluorescent-tube fixer, a lampshade, a reflective optical system, a lamp support, a lamp socket, the electronics high frequency ballast of a fluorescent tube, a switch, electric connection line and plug; External power is received ballast through plug, electric connection line and switch, and the output of ballast is received fluorescent tube to light fluorescent tube through electric connection line; There is conductive layer on described lampshade or reflective optical system surface, described conductive layer through electric connection line and plug ground connection, with the shielding fluorescent tube upward and the electromagnetic radiation of sending to the side.

Secondly, a conduction light-passing board is arranged on the light outgoing window of described lampshade, the conductive layer on described conduction light-passing board and lampshade or the reflective optical system through electric connection line and plug ground connection, with the shielding fluorescent tube to around the electromagnetic radiation of sending.

Described conduction light-passing board is conductive glass plate, conductive plastic plate, woven wire or flase floor, and described flase floor is the flase floor that a series of square, rectangles, flute profile, hexagon or irregularly shaped through hole are arranged, and is made by metal and plastic coat conductive layer.

Described flase floor also can be eliminated the light of dazzling that fluorescent tube shines directly into human eye.

In addition, described ballast and output line thereof be bonding also, to shield the electromagnetic radiation that ballast and connecting line thereof send.

A described thermal cathode fluorescent tube is " U " type, many " U " type, " H " type, many " H " type fluorescent tube.

The utility model compared with prior art has advantages such as electromagnetic-radiation-free interference, high-luminous-efficiency, long life.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is another example structure schematic diagram of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described in detail.Fig. 1 is the structural representation of an embodiment of the hot-cathode fluorescent lamp desk lamp that disturbs of electromagnetic-radiation-free of the present utility model.It includes " U " type thermal cathode fluorescent tube 1, fluorescent tube fixedly lamp holder 2 and electric connector 3 thereof, described fluorescent tube fixedly lamp holder 2 is interconnected to a removably fluorescent tube to fluorescent lamp tube 1 and electric connector 3, a lampshade 4, a reflective optical system 5, the fixture 6 of a fluorescent tube, a lamp support 7, a lamp socket 8, an electronics high frequency ballast 9 that drives fluorescent tube 1, a

switch

10,11, one external power connecting lines 12 of electric connection line and plug 13 between ballast 9 and the fluorescent tube 1; There is conductive layer 14 on described lampshade 4 or reflective optical system 5 surfaces, described conductive layer 14 through

electric connection lines

11,12 and plug 13 ground connection, with shielding fluorescent tube 1 upward with to the electromagnetic radiation of side-emitted.

Support 7 shown in Fig. 1 is flexible soft support, also can be the support that has other form of turning joint or spring.A described thermal cathode fluorescent tube can be " U " type, many " U " type, " H " type, many " H " type fluorescent tube.

Fig. 2 is the structural representation of another embodiment of the hot-cathode fluorescent lamp desk lamp that disturbs of electromagnetic-radiation-free of the present utility model.Fluorescent tube shown in the figure is " H " type fluorescent tube 1a, on the light outgoing window of described lampshade 4 flase floor 15 is arranged, described flase floor has a series of square, rectangles, flute profile, hexagon or other erose through hole, is made by metal or plastic coat conductive layer 16.Conductive layer 14 on conductive layer 16 on the flase floor of described metal grid screen or plastic coat conductive layer and lampshade 4 or the reflective optical system 5 through

electric connection lines

11,12 and plug 13 ground connection, with the shielding fluorescent tube to around the electromagnetic radiation of sending.

Flase floor 15 on the light outgoing window of described lampshade 4 can also be to be conductive glass plate, conductive plastic plate or woven wire.

Connecting line 11 between described high frequency ballast 9 and it and the fluorescent tube also can have screen layer 17 bondings, with complete screening electron high frequency ballast, fluorescent tube and the connecting line between them to around the electromagnetic radiation of sending.

Described desk lamp also can have the device 18 that can change the desk lamp light intensity.Identical among Fig. 2 among the meaning of other digital representative and Fig. 1.

Each embodiment that the scope of protection of present invention is not limited to introduce herein, the know-how that relates to is that the general personnel of this specialty are familiar with, and therefore as long as understand content of the present invention and characteristic, can do various forms of conversion and replacement.

Claims

1, a kind of hot-cathode fluorescent lamp desk lamp of electromagnetic-radiation-free interference, comprise: thermal cathode fluorescent tube, fluorescent tube be lamp holder and electric connector thereof fixedly, a fluorescent-tube fixer, a lampshade, a reflective optical system, a lamp support, a lamp socket, the electronics high frequency ballast of a fluorescent tube, a switch, electric connection line and plug; It is characterized in that described lampshade or reflective optical system surface have in order to the shielding fluorescent tube sends the conductive layer of electromagnetic radiation upward and to the side, and described conductive layer is through electric connection line and plug ground connection.

2, the hot-cathode fluorescent lamp desk lamp of electromagnetic-radiation-free interference according to claim 1, it is characterized in that having on the light outgoing window of described lampshade one in order to the shielding fluorescent tube to around send the conduction light-passing board of electromagnetic radiation, the conductive layer on described conduction light-passing board and lampshade or the reflective optical system passes through electric connection line and plug ground connection.

3, the hot-cathode fluorescent lamp desk lamp that disturbs of electromagnetic-radiation-free according to claim 2 is characterized in that described conduction light-passing board is a kind of in conductive glass plate, conductive plastic plate, woven wire, the flase floor; Described flase floor is the flase floor that a series of square, rectangles, flute profile, hexagon or irregularly shaped through hole are arranged, and is made by metal and plastic coat conductive layer.

4, the hot-cathode fluorescent lamp desk lamp of electromagnetic-radiation-free interference according to claim 1 is characterized in that also bonding of described ballast and output line thereof, to shield the electromagnetic radiation that ballast and connecting line thereof send.

5, the hot-cathode fluorescent lamp desk lamp that disturbs of electromagnetic-radiation-free according to claim 1 is characterized in that a kind of in " U " type, many " U " type, " H " type, many " H " type fluorescent tube of described thermal cathode fluorescent tube.