WO2010052789A1

WO2010052789A1 - Lamp tube

Info

Publication number: WO2010052789A1
Application number: PCT/JP2008/070310
Authority: WO
Inventors: 裕城林
Original assignee: 株式会社オプトロム; 廣拓科技股▲分▼有限公司; 愛普拓楽（香港）有限公司
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2010-05-14
Also published as: CN101868668A

Abstract

This aims to provide a lamp tube which is high in a luminous efficiency and long in a running time without needing any special booster device for a connecting device. The lamp tube (3) comprises a hollow tube body (4) having a face transparent to a light ray in its inside, two conducting units (5) attached individually to the two ends of the tube body, an inverter (6) assembled in at least one of the conducting units, and a plurality of cold-cathode illuminating elements (7) extending in the longitudinal direction of the tube body and connected electrically between the conducting units and the inverter so that they are started to illuminate by the inverter.

Description

Lamp tube

The present invention relates to a lamp tube, and more particularly to a lamp tube employing a cold cathode light emitter.

In general, many fluorescent lamp tubes that mainly emit light by gas discharge are adopted as conventional lighting fixtures, but with the spread of power-saving light emitting diodes (abbreviated as LEDs), many lightings are used. Light emitting diodes are being adopted as light sources in appliances.

As shown in FIG. 1, the illumination lamp tube 101 having a general light emitting diode as a light source is disposed in the tube body 110, two conductive units 120 attached to both ends of the tube body 110, and the tube body 110. And a light emitting unit 130 provided and electrically connected between the conductive units 120. The light emitting unit 130 includes a circuit board 131 and a plurality of light emitting diodes 132 electrically connected to the circuit board 131. Although such a lamp tube 101 has higher luminous efficiency and brightness than conventional fluorescent lamp tubes, conventional LED lamps still have undesirable luminous efficiency and high luminous efficiency, but the unit cost is still rather expensive. There are many limitations to utilizing this type of lighting lamp tube 101.

An object of the present invention is to provide a lamp tube having a high luminous efficiency and a long service life without the need for providing a special pressure-boosting device or the like in a connecting device or the like.

Therefore, a lamp tube according to the present invention comprises a hollow tube body having a surface through which light is transmitted, two conductive units respectively attached to both ends of the tube body, and at least one of the conductive units. A plurality of cold cathodes which are electrically connected between the other conductive unit and the inverter, which are extended in the longitudinal direction of the tube body and are electrically connected between the other conductive unit and the inverter. And a light emitter.
According to this feature, the lamp tube of the present invention takes advantage of the advantages such as high brightness and long life of the cold cathode light emitter through the structure and design of attaching the cold cathode light emitter to the tube main body to manufacture the lamp tube, The life and the quality of lighting can be improved, and the power consumption can be reduced compared to general fluorescent lamp tubes and LED lamp tubes, and energy consumption and carbon dioxide emissions can be reduced. In the lamp tube of the present invention, since the inverter is assembled to the conductive units respectively attached to both ends of the tube main body, it is necessary to provide a special pressure-boosting device or the like in the connecting device for connecting the lamp tube. It can be used as a versatile lamp tube.

It is a perspective schematic view of a general LED lamp tube. It is a perspective view which shows embodiment of Example 1 of the lamp tube concerning this invention. It is a basic electric circuit diagram of the present invention. It is a perspective view which shows embodiment of Example 2 of the lamp tube concerning this invention. It is a disassembled perspective view of FIG. FIG. 5 is a partial exploded perspective view of FIG. 4; FIG. 7 is a partially exploded perspective view of a modification of FIG. 6; It is a perspective view of a modification of both plates (a) and (b) as an electrode holder. It is a partially disassembled perspective view of the example of a change of FIG.

Explanation of sign

3 lamp tube 4 tube body 5 conductive unit 6 inverter 7 cold cathode light emitter 51 electrode holder 52 electrode

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments based on the attached drawings.

As a preferred embodiment of a lamp tube according to the present invention, Example 1 is shown in FIGS. 2 and 3, and this lamp tube 3 has two sockets (figures as in the use of a general fluorescent lamp tube). (Not shown) attached and applied, the socket is a socket provided on the base of the existing fluorescent lamp, and the lamp tube 3 is a lamp used instead of the fluorescent lamp tube . The lamp tube 3 is housed in a tube main body 4 which is a hollow light transmitting body, two conductive units 5 respectively attached to opposite ends of the tube main body 4, and is electrically connected to one conductive unit 5 And a plurality of cold cathode fluorescent lamps (abbreviated as CCFLs) electrically connected between the other conductive unit 5 and the inverter 6. Although three cold cathode light emitters 7 are used in the present embodiment, the number can be selected as appropriate depending on the required brightness. Moreover, although the pipe | tube main body 4 is a long tube in this embodiment, it may not be this in practical use, and may be a U type or a screw type.

Each conductive unit 5 has an electrode holder 51 having a function of sealing the end of the tube main body 4, and two electrodes 52 protruding from the end face of the electrode holder 51 and electrically connected to the electrode holder 51. , And each electrode 52 is inserted into a socket and electrically connected. Here, the inverter 6 is built in the electrode holder 51 of one of the conductive units 5, and connection terminals (not shown) of a plurality of cold cathode light emitters 7 are built in the electrode holder 51 of the other conductive unit 5. ing. It is also possible to use one type of dummy electrode in which one electrode 52 is used for energization and one electrode 521 is used for socket fixing.

The relationship between the inverter 6 and the cold cathode light emitter 7 is shown in FIG. 3. The inverter 6 rectifies the commercial AC power supply V by the rectifier circuit 61 and inputs the rectified DC voltage to the self-oscillation circuit 62. The high frequency output is applied to the electrodes 52 corresponding to the cold cathode light emitters 7 electrically connected to the electrode holder 51, for example. It is preferable to add a dimming control circuit that changes the duty cycle of high frequency output to the inverter 6. Dimming control is not limited to the method of varying the duty cycle. The inverter 6 is a general self-oscillation type inverter in this embodiment, but is not limited to this in practical use.

The cold cathode light emitters 7 extend in the longitudinal direction in the tube main body 4 and are arranged in parallel with each other, and by setting both ends thereof between the two electrode holders 51 , Electrical connection including the inverter 6 is completed. In this case, the electrical connection of the plurality of cold cathode light emitters 7 is a parallel connection as shown in FIG.

FIG. 4 shows a lamp tube 31 of Example 2 which has a different structure from the lamp tube 3 having the cylindrical tube body 4 of Example 1 as a preferred embodiment of the lamp tube according to the present invention. The lamp tube 31 has a tube body 4 comprising a cover 9 having a U-shaped cross section and a light transmitting member 10 covering the upper surface thereof, and both ends of the tube body 4 are sealed by an edge seal 8. It is a cylindrical body having a substantially semicircular cross section, and a predetermined gas is enclosed inside. When the lamp tube 31 is used, the light transmitting body 10 serves as a light emitting surface. More specifically, as shown in the exploded perspective view shown in FIG. 5, a large number of grooves 13 are provided in the longitudinal direction on the synthetic resin U-shaped cover body 9. The plate 11 as an electrode holder is inserted into both ends from the both ends. An inverter 6 is mounted on one of the plates 11, and wiring 15 for each connection extends from this. The plate 11 is provided with a U-shaped terminal 14 for fixing three terminals 16 on one side, and a terminal 12 for connecting an electrode 52 is provided at the other end. The inverter 6 and the U-shaped terminal 14 are connected by a wire 15, and the inverter 6 and the terminal 12 are connected by a wire 15.

Further, a connection terminal 61 is mounted on the other plate 11, from which wiring 15 for connection is extended. The plate 11 is provided with a U-shaped terminal 14 for fixing three terminals 16 on one side, and a terminal 12 for connecting an electrode 52 is provided at the other end. The connection terminal 61 and the U-shaped terminal 14 are connected by a wire 15, and the connection terminal 61 and the terminal 12 are connected by a wire 15.

The edge sealing body 8 provided at both ends is provided with an electrode 52 so as to penetrate the end sealing body 8, and the portion extending to the outside of the electrode 52 is an electrode portion inserted into the socket. The extending portion is an electrode portion inserted into the socket and is an electrode portion connected to the terminal 12. In this embodiment, the combination of the edge seal 8, the electrode 52 and the plate 11 constitutes a conductive unit.

The lamp tube 31 first inserts the plate 11 from both ends into the groove 13 provided in the cover body 9 in the longitudinal direction, fixes the three terminals 16 to the U-shaped terminal 14, and completes the connection with the wiring 15 Thereafter, the cover body 9 and the light transmitting body 10 are adhered, and the both ends are sealed by the edge sealing body 8 to complete the connection between the electrode 52 and the terminal 12. The edge sealing body 8 and the plate 11 are preferably made of a synthetic resin having no light transmitting property. Further, the cover body 9 is made of a synthetic resin having no light transmitting property, or a metal plate such as aluminum or an iron plate, and a reflective paint is applied to the inner side surface thereof. In order to scatter the light from the cold cathode light emitter 7, the light transmitting body 10 is processed to have a light scattering surface on the unevenness. Furthermore, as shown in FIG. 6, the light transmitting body 10 may be inserted into the groove 13 of the cover 9 from both ends, and the cover 9 and the light transmitting body 10 may be connected.

In particular, FIG. 6 shows an example of fixing the light transmitting body 10 and the cold cathode light emitting body 7, and the cold cathode light emitting body 7 is directed toward the inside (upper side in the figure) at the appropriate position of the light transmitting body 10. The adhesive tape 18 is adhered so as to wrap, and the light transmitting body 10 and the cold cathode light emitting body 7 are integrated. The adhesive tape 18 fixes and holds the plurality of cold cathode light emitters 7 on the light transmission body 10 side, and functions to protect the cold cathode light emitters 7 in the lamp tube 31 against movement or large shaking. The adhesive tape 18 is preferably transparent.

A modification of the cover body 9 is shown in FIG. 7, and an integral support piece 19 is fixed at an appropriate position of the cover body 9 toward the inside (upper side in the figure). The support piece 19 is provided with a plurality of openings 17. By inserting the cold cathode light emitters 7 into the openings 17, the cold cathode light emitters 7 are held swingably on the cover body 9 side, The movement of the cold cathode light emitter 7 in the lamp tube 31 is restricted and protected against movement and large shaking.

FIG. 8 shows a modification of the plate 11, and a flare 20 capable of arranging the terminals 21 three-dimensionally in the upper and lower directions is provided at the insertion direction end of the plate 11. Although the flare 20 is in the form of a plate in this example, the terminal 21 may be provided at the tip of the supporting piece whose strength is lowered. When the terminal 16 of the cold cathode light emitter 7 is connected to such a plate 11, the three cold cathode light emitters 7 are disposed in a well-balanced manner in the cover body 9, and the light of the lamp tube 31 is not uneven. A low high efficiency lamp tube 31 is obtained.

FIG. 9 shows a modification in which the cold cathode light emitter 7 is supported so as to be able to be arranged three-dimensionally in the upper and lower three parts by a part of the cover 9. The cathode light emitter 7 is held. The holding piece 22 has gripping grooves 24 at triangular positions, and supports the cold cathode light emitters 7 extending in the cover body 9 by the respective gripping grooves 24, and the lamp tube 31 against movement or large shaking. It functions to protect the internal cold cathode light emitter 7. In particular, in this example, since the holding piece 22 can be moved in the longitudinal direction by inserting the holding piece 22 into the groove 13 of the cover body 9, the cold tube can be cooled according to the length conditions of the lamp tube 31 and the cold cathode light emitter 7, etc. It is possible to cope with the shaking by specifying the position of the cathode light emitter 7 that causes the largest fluctuation. Furthermore, if the cold cathode light emitters 7 extending in the cover body 9 can be reliably fixed at a plurality of points in the space in the cover body 9, the plate 11 etc. is not provided with the U-shaped terminals 14 and terminals 21 etc. Thus, the terminal 23 can be disposed in the free space.

As described above, since each component can be continuously fixed and arranged using the groove 13 of the cover body 9, not only it is easy to manufacture, but also the standard of the lamp tube 31 can be easily unified without deviation in the arrangement position of each member. become. The cover 9 is U-shaped in cross section, and the inner surface is coated with a reflective paint. Therefore, the light from the cold cathode light emitter 7 is widely reflected on the inner surface to make the light transmitting member 10 uniform. Focus on Furthermore, since the light transmitting body 10 is processed into a light scattering surface on the concavities and convexities in order to scatter the light from the cold cathode light emitter 7, the light transmitting body 10 can obtain light without spots. .

When the

lamp tube

3, 31 is used, the electrode 52 of the conductive unit 5 is inserted into the socket of a general fluorescent lamp tube, and then the

lamp tube

3, 31 is inserted into the socket, as in the general fluorescent lamp tube usage method. By rotating, the

lamp tubes

3, 31 are electrically locked between the sockets and simultaneously locked. The

lamp tube

3, 31 is energized through a socket, and the cold cathode light emitter 7 is activated by the inverter 6 to emit light, and the illumination light beam transmitted through the tube main body 4 of the first embodiment or the light transmitting member 10 of the second embodiment. Is generated. Since the cold cathode light emitter 7 has higher luminous efficiency and lower cost than a general LED lamp tube in operation, it can further save power consumption and provide higher quality illumination.

Furthermore, it should be noted that the tube diameter (for example, 2 to 3 mm) of the cold cathode light emitter 7 is generally much smaller than that of the T5 or T8 lamp tube, and The tube main body 4 of the lamp tube 3 can be used as it is as a hollow tube used for the T5 or T8 lamp tube. When a tube of T5 or T8 lamp tube is used as the tube main body 4, the electrode holder and the electrode of the T5 or T8 lamp tube may be used as corresponding to the electrode holder 51 of the conductive unit 5 and the electrode 52 .

Therefore, the manufacturer can directly convert the production line of the T5 or T8 lamp tube to the production and production of the lamp tube 3 of Example 1 in which the cold cathode light emitter 7 is adopted, and the investment cost can be significantly reduced. It can be done. In addition, when manufacturing the lamp tube 3 provided with the cold cathode light-emitting body 7 of Example 1 concerning this invention using the pipe | tube main body of T2 or T8 lamp tube, an electrode holder, and an electrode, the lamp of existing T5 or T8 The user of the tube is equipped with the cold cathode light emitter 7 of Example 1 according to the present invention, without removing and replacing the entire luminaire just by removing the existing luminaire starter. The lamp tube 3 can be used as it is as it is.

Further, even in the lamp tube 31 provided with the cold cathode light emitter 7 of Example 2 according to the present invention, the diameter of the lamp tube 31 is substantially equal to that of the T2 or T8 lamp tube, and the electrode 52 extends from the edge sealing body 8 If the spacing and the diameter of the electrode 52 are designed to be equal to those of the T2 or T8 lamp tube, the user of the existing T5 or T8 lamp tube simply removes the existing luminaire starter, and the entire luminaire is It is possible to replace the lamp tube of T5 or T8 with the lamp tube 31 provided with the cold cathode light emitter 7 of Example 2 of the present invention as it is without removing and replacing it.

The above contents are merely examples of preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. That is, all the simple changes and modifications based on the contents of the claims of the present invention and the specification are included in the claims.

Claims

A hollow tube body having a surface through which light is transmitted;
Two conductive units respectively attached to both ends of the tube body;
An inverter assembled to at least one conductive unit of the conductive unit;
A plurality of cold cathode light emitters extending in the longitudinal direction of the tube main body and electrically connected between the other of the conductive unit and the inverter, and activated by the inverter to emit light;
A lamp tube characterized by comprising.
Each of the conductive units includes a sealing portion at an end of the tube body, an electrode holder, and two electrodes which are electrically connected to the electrode holder and protrude from an outer surface of the sealing portion.
The inverter is mounted electrically connected to the corresponding electrode holder,
The lamp tube according to claim 1, wherein the cold cathode light emitter is electrically connected between the corresponding electrode holder and the inverter.
The lamp tube according to claim 2, wherein the inverter is built in the electrode holder.
The lamp tube according to claim 2, wherein the electrode holder is incorporated in the tube body.
The lamp tube according to claim 2, wherein the plurality of cold cathode light emitters are electrically connected in parallel between the electrode holder and the inverter.
The lamp tube according to claim 2, wherein the inverter is a self-oscillation type.