CN102374426A

CN102374426A - Single-ended DC (direct current) input LED (light-emitting diode) straight-tube fluorescent lamp

Info

Publication number: CN102374426A
Application number: CN2011102743236A
Authority: CN
Inventors: 李建明; 狄留霞
Original assignee: Jiangsu Xintian Electronic Science & Technology Co Ltd
Current assignee: Jiangsu Xintian Electronic Science & Technology Co Ltd
Priority date: 2011-09-16
Filing date: 2011-09-16
Publication date: 2012-03-14

Abstract

The invention provides a single-ended DC (direct current) input LED (light-emitting diode) straight-tube fluorescent lamp which comprises an LED illuminator and a lamp tube, wherein the inner wall of the lamp tube is coated with a fluorescent powder coating, one end of the lamp tube is open and the other end of the lamp tube is closed, and the LED illuminator is installed at the open end of the lamp tube; and the peak wavelength of the spectrum of light emitted by the LED illuminator is between 320nm and 480nm. Since the LED illuminator capable of emitting blue and violet light is mounted at the open end of the lamp tube, the peak wavelength of the spectrum of light emitted by the LED illuminator is between 320nm and 480nm, and the fluorescent powder coating is coated on the inner wall of the lamp tube, and when blue and violet light emitted by the LED illuminator irradiates the fluorescent powder coating on the inner wall of the lamp tube, the fluorescent powder coating is activated to emit light continuously. In the invention, mercury grains causing environment pollution are not used, and the lamp tube does not need to be vacuumized, therefore the single-ended DC input LED straight-tube fluorescent lamp has the advantages of an LED lamp, such as energy saving, environmental friendliness and long service life, and also has the characteristics of a fluorescent lamp, such as high luminous flux and high unit power lumen, is energy-saving and environmentally-friendly.

Description

Single-ended direct current input LED straight tube fluorescent lamp

Technical field

The present invention relates to straight tube fluorescent lamp, relate in particular to the LED straight tube fluorescent lamp.

Background technology

Along with improving constantly of LED lighting engineering and production technology; The field of employment of LED is more and more wideer; Extend to reading lighting and common normal lighting field from original home decoration illumination; Since the advantage that the LED light fixture has energy-saving and environmental protection, long service life etc. to generally acknowledge, alternative traditional fluorescent lamp, Metal halogen lamp and conventional electricity-saving lamp.Conventional straight tube fluorescent lamp two ends all are provided with the civil power electrode, and straight tube fluorescent lamp leans between electrode that electric ballast and starter make lamp tube ends and the mercury grain and produces high-speed electron flow, relies on the fluorescent coating of high-speed electron flow activation tube inner wall luminous; All there are electrode and filament in this conventional fluorescent lamps two ends; Starting current is bigger, and voltage is very high, and filament is short service life; The light decay of fluorescent coating is than very fast; The bulk life time of fluorescent lamp has only 6～12 months usually, and when fluorescent lamp was scrapped, the mercury grain in it then polluted the environment.

Summary of the invention:

The purpose of this invention is to provide a kind of single-ended direct current input LED straight tube fluorescent lamp, the blue-violet light that its utilizes the LED luminescent device that can send royal purple light to send activates fluoresent coating on the tube inner wall, makes fluoresent coating luminous; Thereby make fluorescent tube continue luminous lighting, this fluorescent tube neither need use the mercury grain, need not in the fluorescent tube to vacuumize; And starting current is little, and voltage is steady, and fluoresent coating only receives the irradiation of royal purple light on the tube inner wall; Can not receive the impact of high voltage, big electric current, light decay is slow, and the bulk life time of fluorescent lamp reaches 6～10 years; When fluorescent lamp is scrapped, do not pollute the environment.

The technical scheme that the present invention takes is:

A kind of single-ended direct current input LED straight tube fluorescent lamp; It is characterized in that: comprise LED photophore and fluorescent tube; Said fluorescent tube one end opening, other end sealing, the LED photophore is installed in the openend of fluorescent tube; Inwall at fluorescent tube scribbles fluorescent coating, and the peak wavelength of the spectrum of said LED light that photophore sends is 320nm～480nm.

Further, said LED photophore is that direct current is imported, and it comprises lamp socket, electrode, radiator, circuit board and LED lamp pearl; Wherein, the peak wavelength of the spectrum of LED lamp light that pearl sends is 320nm～480nm, passes lamp socket electrode insulation and is electrically connected with LED lamp pearl; All LED lamp pearls are installed on the front of circuit board, and are connected as a single entity through circuit preset on the circuit board, and radiator is fitted on the back side of circuit board; Radiator is installed in the lamp socket, and closely contacts with lamp socket.

Further, radiator and lamp socket are connected as a single entity.

Further, between back of circuit board and radiator, be provided with heat conductive silica gel, circuit board is fixedly connected with radiator.

Further, the openend of fluorescent tube is inserted in the connection endoporus of lamp socket.

Further, the openend at fluorescent tube is provided with tack coat with being connected of lamp socket between the endoporus.

Further, the material of radiator and lamp socket is red copper, copper alloy, aluminum or aluminum alloy.

Owing to the LED photophore that can send royal purple light has been installed at the openend of fluorescent tube; On the inwall of fluorescent tube, be provided with fluorescent coating; After royal purple illumination that the LED photophore sends is mapped to the fluorescent coating on the tube inner wall, just can the activated phosphor coating make it to continue luminous.Because principle of luminosity of the present invention is different with the principle of luminosity of fluorescent lamp in the prior art; It is that the fluorescent coating that relies on the LED photophore to send on the royal purple illumination shot-light inside pipe wall comes luminogen; In activating luminescence process, do not have the impact of high-speed electron flow, so the light decay speed of fluorescent coating is very slow, simultaneously to fluorescent coating; The inner chamber of fluorescent tube also need not vacuumize; Both the split package assembly can be adopted between fluorescent tube and the LED photophore, after the arbitrary damage in fluorescent tube and the LED photophore, the substitute mode place under repair can be passed through.Also can adopt fixed connection structure between fluorescent tube and the LED photophore, increase user's selectivity, the undulating value of LED photophore voltage and current in the open and close process is less simultaneously, and is suitable when opening with closure with common incandescent lamp bulb.The effect of external ballast also is to convert electric main to direct current, for LED lamp pearl provides direct current.Both used in the present invention less than the mercury grain that pollutes the environment, fluorescent tube does not vacuumize again, and it had both had the energy-saving and environmental protection of LED light fixture, the advantage of long service life; It is big to have the fluorescent light flux again, and the characteristics that the unit power lumen is high are through testing oneself; The amount of lumens that the present invention is every watt is at 80～115 lumens; And the amount of lumens of every watt of conventional fluorescent lamps is about 60 lumens, and the brightness that the present invention is 14 watts is equivalent to 36 watts conventional fluorescent lamps, and energy-saving efficiency reaches 50%～60%; Can reach 6～80,000 hours service life, not only energy-conservation but also environmental protection.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of LED photophore among Fig. 1;

Fig. 3 is the another kind of structural representation of LED photophore among Fig. 1,

Wherein, radiator and lamp socket are connected as a single entity;

Among the figure: the 1-LED photophore; The 2-fluorescent tube; The 3-fluorescent coating; The external ballast of 4-; The 11-lamp socket; The 12-electrode; The 14-radiator; The 15-circuit board; 16-LED lamp pearl; The 17-heat conductive silica gel; The 18-tack coat.

The specific embodiment

Below in conjunction with the description of drawings specific embodiment of the present invention:

Embodiment 1: Fig. 1 is the imported single end LED straight tube fluorescent lamp of a kind of direct current, and it forms said fluorescent tube 2 one end openings by LED photophore that can send royal purple light 1 and fluorescent tube 2; Other end sealing, LED photophore 1 is installed in the openend of fluorescent tube 2, scribbles fluorescent coating 3 at the inwall of fluorescent tube 2; LED photophore 1 is installed in the openend of fluorescent tube 2, and said LED photophore 1 is as shown in Figure 2, and it is made up of lamp socket 11, electrode 12, radiator 14, circuit board 15 and the LED lamp pearl 16 that can send royal purple light; Wherein, the peak wavelength that 16 on LED lamp pearl sends the spectrum of light is 320nm～480nm, and electrode 12 passes lamp socket 11 with insulating and is electrically connected with built-in ballasts 13; The direct current output of built-in ballasts 13 is electrically connected with LED lamp pearl 16; All LED lamp pearls 16 are installed on the front of circuit board 15, and are connected as a single entity through preinstalled circuit on the circuit board 15, and the back side of circuit board 15 is fixed on the radiator 14; Between the back side of circuit board 15 and radiator 14, be provided with heat conductive silica gel 17; Radiator 14 is installed in the lamp socket 11, and closely contacts with lamp socket 11, and the openend of fluorescent tube 2 is inserted in the endoporus of lamp socket 11.

In this example, be provided with radiator structure, for example set up fin in the appearance of lamp socket 11.

In this example, radiator 14 can be connected as a single entity with lamp socket 11, and is as shown in Figure 3, and radiator 14 is an aluminum or aluminum alloy with the material of lamp socket 11.

In this example, the openend of fluorescent tube 2 can be fixed in the endoporus of lamp socket 11 through tack coat 18.Embodiment of the present invention is a lot, all etc. the function replacing structure, all belong to protection scope of the present invention.

Claims

1. a single-ended direct current is imported the LED straight tube fluorescent lamp; It is characterized in that: comprise LED photophore (1) and fluorescent tube (2); Said fluorescent tube (2) one end openings, other end sealing scribbles fluorescent coating (3) at the inwall of fluorescent tube (2); LED photophore (1) is installed in the openend of fluorescent tube (2), and the peak wavelength of the spectrum of said LED photophore (1) light that sends is 320nm～480nm.

2. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 1; It is characterized in that: said LED photophore (1) comprises lamp socket (11), electrode (12), radiator (14), circuit board (15) and the LED lamp pearl (16) that can send royal purple light; Wherein, The peak wavelength of the spectrum of LED lamp pearl (16) light that sends is 320nm～480nm, and electrode (12) passes lamp socket (11) with insulating and is electrically connected with LED lamp pearl (16), and all LED lamp pearls (16) are installed on the front of circuit board (15); And the circuit of upward presetting through circuit board (15) is connected as a single entity; Radiator (14) is fitted on the back side of circuit board (15), and radiator (14) is installed in the lamp socket (11), and closely contacts with lamp socket (11).

3. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 2, it is characterized in that: radiator (14) is connected as a single entity with lamp socket (11).

4. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 24, it is characterized in that: between circuit board (15) back side that LED lamp pearl (16) is housed and radiator (14), be provided with heat conductive silica gel (17), circuit board (15) is fixedly connected with radiator (14).

5. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 1, it is characterized in that: fluorescent tube (2) openend is inserted in the connection endoporus of lamp socket (11).

6. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 2, it is characterized in that: fluorescent tube (2) openend is inserted in the connection endoporus of lamp socket (11).

7. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 1, it is characterized in that: be provided with tack coat (18) between the endoporus in fluorescent tube (2) openend and being connected of lamp socket (11).

8. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 2, it is characterized in that: be provided with tack coat (18) between the endoporus in fluorescent tube (2) openend and being connected of lamp socket (11).

9. according to the said single-ended direct current input LED straight tube fluorescent lamp of claim 2, it is characterized in that: radiator (14) is red copper, copper alloy, aluminum or aluminum alloy with the material of lamp socket (11).