HK1149790A - Lamp tube - Google Patents

Description

Lamp tube

Technical Field

The present invention relates to lamps, and more particularly to lamps employing cold cathode emitters.

Background

Conventional lighting fixtures are generally fluorescent tubes that emit Light by gas discharge, and as Light Emitting Diodes (LEDs) are becoming popular, more and more lighting fixtures use diodes as Light sources.

As shown in fig. 1, a lighting tube 101, which usually uses a light emitting diode as a light source, is composed of a tube body 110, two conductive modules 120 installed at two ends of the tube body 110, and a light emitting module 130 electrically connected to the conductive modules 120 in the tube body 110. The light emitting module 130 includes a circuit board 131 and a plurality of light emitting diodes 132 electrically connected to the circuit board 131. The lamp tube 101 has higher luminous efficiency and higher brightness than the prior fluorescent lamp tube, but the prior LED lamp still does not reach the expected luminous efficiency; although the luminous efficiency is improved, the use of the lamp 101 is more limited due to the higher unit price.

Disclosure of Invention

Problems to be solved by the invention

The purpose of the invention is as follows: to provide a lamp tube having high luminous efficiency and long service life without providing a special booster to a connector.

Means for solving the problems

The lamp tube is characterized in that the lamp tube is provided with a hollow tube body with light transmission inside, two ends of the tube body are respectively provided with two conductive modules, an inverter is arranged on at least one conductive module at one end of the conductive modules at the two ends, the conductive module at the other end along the length direction of the tube body is electrically connected with the inverter, and a plurality of cold cathode luminous bodies can emit light by starting the inverter. According to the characteristics, through the structure and the design that the cold cathode luminous body is assembled in the tube body, the cold cathode luminous body has the advantages of improving the service life and the lighting quality and simultaneously having lower power consumption, energy consumption and carbon dioxide emission compared with the common fluorescent tube and LED tube by utilizing the characteristics of high brightness and long service life. The inverter is mounted on the conductive modules at both ends of the tube body without additionally mounting a special booster or the like on the connector, so that the lamp can be widely used.

Drawings

Fig. 1 is a schematic perspective view of a general LED lamp. FIG. 2 is a perspective view of the embodiment of the lamp tube of the present invention in example 1. Fig. 3 is a basic electrical circuit diagram of the present invention. FIG. 4 is a perspective view of the embodiment of the lamp tube of the present invention in example 2. Fig. 5 is an exploded oblique view of fig. 4. Fig. 6 is a partially exploded oblique view of fig. 4. Fig. 7 is a partially exploded perspective view of a modification of fig. 6. Fig. 8 is a perspective view of a modification of the two electrode plates (a) and (b) of the electrode holder. Fig. 9 is a partially exploded perspective view of a modification of fig. 7. Description of the reference numerals

3 lamp tube 4 tube body 5 conductive module 6 inverter 7 cold cathode luminous body 51 electrode frame 52 electrode

Detailed Description

The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description, which proceeds with reference to the accompanying drawings.

Next, the lamp tube of example 1 of the present invention will be described with reference to fig. 2 and 3. The lamp tube 3 is arranged between two sockets (not marked in the figure) which are arranged in the original fluorescent lamp base body to replace the fluorescent lamp tube. The Lamp tube 3 is composed of a hollow light-transmitting tube body 4, two conductive modules 5 mounted at two ends of the tube body 4, an inverter 6 arranged in the conductive module 5 at one end and electrically connected with the conductive module 5, and a plurality of Cold Cathode Fluorescent Lamps (CCFLs) 7 electrically connected between the conductive module 5 at the other end and the inverter 6. This example is 3 cold cathode emitters 7, the number of which can be selected in practice according to the desired brightness. In addition, the present embodiment is an elongated tubular shape, and in practical use, the present invention is not limited to the elongated tubular shape, and a U-shaped or spiral tube is also applicable.

Each conductive module 5 is composed of an electrode holder 51 enclosing the end of the tube body 4, and two electrodes 52 protruding from the end of the electrode holder 51 and electrically connected thereto, each electrode 52 being electrically connected by being inserted into a socket. The inverter 6 is built in the electrode holder 51 of the one-end conductive module 5, and a plurality of connection terminals (not shown) of the cold cathode light emitting element 7 are built in the electrode holder 51 of the other-end conductive module 5. One electrode 52 is used for energization, and the other electrode 521 is used as a dummy electrode for a fixed socket.

Fig. 3 shows the relationship between the inverter 6 and the cold cathode light emitter 7. The inverter 6 rectifies the commercial ac power supply V by a rectifier circuit 61, and the rectified dc voltage is input to a self-excited oscillation circuit 62. For example, the voltage is boosted to 20 to 100KHz and the voltage is applied to the electrode 52 corresponding to the cold cathode light emitting element 7 electrically connected to the electrode holder 51 at a high frequency of 200 to 3000V, and the inverter 6 is preferably provided with an adjustable dimming control circuit in a duty cycle of high frequency output. The dimming control does not limit the manner in which the duty cycle is adjustable, and the inverter 6 is a general self-excited oscillation circuit in the present embodiment, and is not limited in practical use.

The cold cathode luminous bodies 7 are arranged in parallel in the longitudinal direction of the tube body 4, respectively, and both ends are placed in the two electrode holders 51, so that the electrical connection including the inverter 6 is completed. At this time, the plurality of cold cathode light emitters 7 are electrically connected in parallel as shown in fig. 3.

Fig. 4 properly shows the configuration of the lamp tube 31 of the embodiment 2 different from the lamp tube 3 of the cylindrical tube body 4 in the embodiment 1; the lamp tube 31 is composed of a shell 9 with a U-shaped section and a tube body 4 of a light transmitting body 10 covering the shell, and both ends of the tube body 4 are sealed by an insulating sealing body 8 with a half-moon-shaped end surface, and the tube body has a half-cylinder-shaped section, and a specific gas is sealed inside. When the lamp 31 is used, the light-transmitting body 10 is a light-emitting surface. In detail, as shown in an exploded perspective view of fig. 5, a plurality of grooves 13 are formed in the longitudinal direction of the housing 9 having a U-shaped cross section of a synthetic resin material, and the pole pieces 11 of the electrode holder are inserted from both ends of the grooves 13. The inverter 6 is placed on the pole plate 11 at one end, and a connection wire 15 extends from the inverter 6. The electrode plate 11 has a U-shaped terminal 14 to which three terminals 16 are fixed, and a terminal 12 connected to an electrode 52 at the other end. The inverter 6 and the U-shaped terminal 14 are connected by respective wires 15, and the terminal 12 is connected by the wire 15.

The connection terminals 61 are disposed on the other end of the pad 11 and extend out of the respective connection wirings 15. The plate 11 has a U-shaped terminal 14 to which three terminals 16 are fixed, and a terminal 12 to which an electrode 52 is connected at the other end. Further, the connection terminal 61 and the U-shaped terminal 14 are connected to the respective wires 15, and the terminal 61 and the terminal 12 are connected by the wires 15.

The electrode 52 penetrates the insulating package 8 at both ends, and the portion of the electrode 52 protruding outward is an electrode to be inserted into a socket, and the portion of the electrode 52 protruding inward is an electrode to be connected to the socket and the terminal 12. The combination of the insulating package 8, the electrode 52 and the pad 11 in this embodiment constitutes a conductive module.

The lamp tube 31 is constructed by inserting the electrode plates 11 from both ends in the direction of the grooves 13 formed in the longitudinal direction of the case 9, fixing the three terminals 16 to the U-shaped terminals 14, and connecting them by the wires 15, and then assembling the case 9 and the light-transmitting body 10, and then sealing the electrodes 52 with the terminals 12 by the insulating sealing body 8. Further, a synthetic resin having no light-projecting property is proposed for the insulating package 8 and the electrode plate 11. The case 9 is preferably made of a synthetic resin, aluminum material, or iron material having no light-projecting property, and the inner surface thereof is coated with a reflective paint. The inner surface of the light transmitting member 10 is formed into a concave-convex light scattering surface for scattering the light of the cold cathode light emitter 7, and the light transmitting member 10 may be integrally inserted from both ends along the groove 13 of the housing 9 as shown in fig. 6.

Fig. 6 specifically illustrates an example in which the light-transmitting body 10 is fixed to the cold cathode light-emitting body 7. The cold cathode luminous bodies 7 are wrapped and adhered to the proper positions on the inner side of the light transmission body 10 through the adhesive tapes 18, so that the cold cathode luminous bodies 7 and the light transmission body 10 are integrated, the plurality of cold cathode luminous bodies 7 are fixed on the light transmission body 10 through the adhesive tapes 18, the cold cathode luminous bodies 7 in the lamp tube 31 can be protected when the cold cathode luminous bodies are moved and greatly shaken, and the adhesive tapes 18 are preferably transparent.

Fig. 7 shows a shape modification of the housing 9, and is fixed at an appropriate position on the inner side (upper side in the figure) of the housing 9 by an integral support piece 19. The support plate 19 has a plurality of openings 17, and the cold cathode luminous bodies 7 pass through the openings 17. This prevents the cold cathode fluorescent material 7 from being shaken, moved, and shaken vigorously, and thus, the cold cathode fluorescent material 7 in the lamp tube 31 is prevented from being restricted from moving and protected.

Fig. 8 shows a shape change example of the pole plate 11, and a development plane 20 for vertically arranging the terminals 21 in a three-dimensional manner is attached to a head portion along an insertion direction of the pole plate 11. The development plane 20 here is plate-shaped, and may be constructed by a support piece having a vertical high strength. When the terminals 16 of the cold cathode light emitters 7 are connected to the electrode plate 11, the three cold cathode light emitters 7 in the housing 9 are well-balanced, and the high efficiency of the lamp 31 is fully realized because the light is not deflected and there is no flare.

Fig. 9 shows a modification of the configuration in which the cathode fluorescent material 7 is supported in a vertical direction by a part of the structure of the housing 9, and the holding piece 22 is inserted into the groove 13 of the housing 9 to fix the cold cathode fluorescent material 7 at a predetermined position. The fixing slots 24 on the holding pieces 22 are arranged in a triangular shape, and each fixing slot 24 supports the cold cathode luminous bodies 7 extending in the shell 9, and limits the movement of the cold cathode luminous bodies 7 in the lamp tube 31 and plays a role in protection when the cold cathode luminous bodies 7 move and shake violently. Since the holding pieces 22 inserted into the grooves 13 of the housing 9 can be moved in the longitudinal direction in this example, the maximum shaking amplitude of the lamp tube 31 or the cold cathode luminous body 7 can be determined to solve the shaking problem. The cold cathode light emitter 7 can be fixed to multiple points in the case 9, and in this case, the U-shaped terminals 14 and the terminals 21 do not need to be arranged on the electrode plate 11, and the terminals 23 can be freely arranged as shown in fig. 9.

The slots 13 like the housing 9 allow the components to be fixedly arranged one by one, making manufacturing easier, and also making it possible to standardize the specification of the lamp 31. And the inner side surface of the shell 9 with a U-shaped section is coated with a reflective coating, and light emitted from the cold cathode luminous body 7 is uniformly projected onto the light transmitting body 10 through light reflected in a large range by the inner side surface. In addition, the inner side surface of the translucent body 10 is formed into a concave-convex light scattering surface for scattering the light emitted from the cold cathode light-emitting body 7, so that uniform light can be obtained through the translucent body 10.

When using the lamps 3 and 31, the electrodes 52 of the conductive module 5 are inserted into the fluorescent lamp sockets and then the lamps 3 and 31 are rotated, so that the lamps 3 and 31 are electrically connected with the sockets and are locked together, as in the case of using a general fluorescent lamp. The lamps 3 and 31 are energized through the sockets to emit light from the cold cathode light emitter 7 when the inverter 6 is started, and the illumination light is generated through the tube body 4 in example 1 or the light transmitting body 10 in example 2. The cold cathode luminous body 7 has higher luminous efficiency and lower price than the common LED lamp tube when in work, and can provide more electricity-saving and high-quality illumination.

It should be emphasized that the tube diameter (e.g. 2-3 mm) of the ccfl 7 is significantly smaller than that of the conventional T5 or T8 lamp, and the tube body 4 of the lamp 3 in example 1 of the present invention can be used as a T5 or T8 lamp without any change. When the tube body 4 of the lamp tube of T5 or T8 is used, the electrode holder and the electrode of the lamp tube of T5 or T8 can be used as the electrode holder 51 and the electrode 52 of the conductive module 5.

Therefore, manufacturers can directly produce and manufacture the lamp tube 3 of the embodiment 1 of the cold cathode luminous body 7 on the premise of not changing the lamp tube production line of T5 or T8, thereby greatly reducing the investment cost. When the tube body, the electrode frame and the electrodes of the T2 or T8 tube are used to produce the tube 3 of the cold cathode light-emitting device 7 tube, the user of the T5 or T8 tube only needs to remove the starter in the original lighting device without removing the whole lighting device, and the tube of the T5 or T8 is replaced by the tube 3 of the cold cathode light-emitting device 7 in the embodiment 1.

The diameter of the T2 or T8 lamp tube is substantially the same as the diameter of the lamp tube 31 of the cold cathode light emitter 7 used in embodiment 2 of the present invention, and the spacing of the electrodes 52 and the diameter of the electrodes 52 extending from the insulating package 8 are designed to be the same as those of the T2 or T8 lamp tube, so that the T5 or T8 lamp tube is used originally, and the lamp tube of T5 or T8 can be used instead of the lamp tube 3 of embodiment 2 using the cold cathode light emitter 7, as long as the starter of the original lighting fixture is removed and the entire lighting fixture is not replaced.

The above description is only an effective example of the embodiment of the present invention, and the present invention is not limited to this embodiment. The scope of the claims of the present invention is intended to include all such modifications and changes as are within the scope of the claims and the detailed description.

The claims (modification according to treaty clause 19)

1. A lamp tube, characterized by:

a light-transmitting body having a light-transmitting surface through which light can pass, and a hollow tube body of a housing,

two ends of the tube body are respectively provided with two conductive modules,

an inverter connected to the conductive module at least one end of the conductive modules at both ends,

the other end of the conductive module along the direction of the tube body is electrically connected with the inverter, and the inverter starts a plurality of cold cathode luminous bodies which emit light.

2. A lamp tube as claimed in claim 1, characterized in that:

each conductive module at least comprises a sealing part for sealing two ends of the tube body and an electrode protruding out of the sealing part,

the inverter is fixed in the hollow tube body, and both ends of the hollow tube body are sealed by sealing parts,

the cold cathode luminous body is electrically connected with the inverter.

3. A lamp tube as claimed in claim 1 or 2, characterized in that:

the housing is provided with a longitudinal groove, and the light-transmitting body is inserted from one end of the groove of the housing to connect the housing and the light-transmitting body to each other.

4. A lamp tube as claimed in claim 1 or 2, characterized in that:

the housing is provided with a longitudinal groove, and a holding piece with a fixing groove is inserted into one end of the groove of the housing, the fixing groove can support the three-dimensional configuration of the cold cathode luminous body extending in the hollow tube body, and the cold cathode luminous body in the tube body is protected when the cold cathode luminous body moves or greatly shakes.

5. A lamp tube as claimed in claim 4, characterized in that:

the cold cathode luminous body extending in the tube body can be fixed at a plurality of positions.

6. A lamp tube as claimed in claim 3 or 5, characterized in that:

the casing is provided with a plurality of longitudinal grooves, and the light transmitting body, the clamping piece with the fixing groove and other components are inserted from one end of the groove of the outer casing, so that each component can be continuously and fixedly arranged.

Claims (6)

1. A lamp tube, characterized by:

a hollow tube body with a light-transmitting surface inside,

two ends of the tube body are respectively provided with two conductive modules,

the inverter is arranged on the conductive module at least one end of the conductive modules at the two ends,

the other end of the conductive module along the direction of the tube body is electrically connected with the inverter, and the inverter starts a plurality of cold cathode luminous bodies which emit light.

2. A lamp tube as claimed in claim 1, characterized in that:

the conductive module comprises an electrode frame, a seal part sealed by the end part of the tube body, and two electrodes which protrude from the seal part and are electrically connected with the electrode frame,

the inverter is electrically connected to the electrode frame,

the cold cathode luminous body is electrically connected with the corresponding electrode frame and the inverter.

3. A lamp tube as claimed in claim 2, characterized in that:

the inverter is built in the electrode holder.

4. A lamp tube as claimed in claim 2, characterized in that:

the electrode holder is arranged in the tube body.

5. A lamp tube as claimed in claim 2, characterized in that:

the plurality of cold cathode luminous bodies are electrically connected in parallel between the electrode holder and the inverter.

6. A lamp tube as claimed in claim 2, characterized in that:

the inverter is of a self-excited oscillation type.