CN101764036A - lighting device - Google Patents

Abstract

A lighting device includes a base and a spiral cold cathode fluorescent lamp tube. The spiral cold cathode fluorescent lamp tube is provided with a tube body and two electrodes, wherein the electrodes are respectively positioned at two ends of the tube body, and the base and the two electrodes are respectively positioned at two sides of the tube body.

Description

lighting device

technical field

The invention relates to a lighting device, in particular to a lighting device of a cold cathode fluorescent lamp.

Background technique

Traditional hot cathode lamps are widely used as lighting equipment, and spiral lamps have gradually become the mainstream of the market due to their superior luminous efficacy.

The traditional spiral lamp mainly includes a lamp holder and a hot-cathode double-helix lamp tube. The hot-cathode double-helix lamp tube is composed of two connected single-helix tube bodies, and the two single-helix tube bodies are connected on the top side of the spiral lamp. It has concentric symmetry, which makes the light uniform and improves light efficiency. The two ends of the hot cathode double helix lamp tube are installed in the lamp holder and connected with the drive circuit in the lamp holder.

However, it is difficult to reduce the size of the traditional spiral lamp hot cathode lamp tube as a light source because it includes electrodes, which makes it difficult to reduce the volume of the spiral lamp as a whole. Especially when the lamp tube is connected to the lamp holder, it is difficult to reduce the diameter of the lamp holder due to the large diameter of the coil.

Contents of the invention

In view of the above-mentioned problems, an object of the present invention is to provide a lighting device of a spiral cold cathode fluorescent lamp capable of reducing the size of the lamp holder.

To achieve the above purpose, the present invention provides a lighting device, which includes a base and a spiral cold cathode fluorescent lamp (hereinafter referred to as the lamp for short). The lamp tube has a tube body and two electrodes, the electrodes are respectively located at both ends of the tube body, and the base and the two electrodes are respectively located at both sides of the tube body.

In various embodiments, the electronic device stands upright on the base, and the two electrodes are electrically connected to the electronic device. Electronic devices are inverters, coils, circuit boards or components of inverters. In addition, the electronic device can also be arranged in the base, and the two electrodes are electrically connected with the electronic device.

The lighting device also includes a positioning component, a housing, and a reflecting component. The positioning component is arranged on the base to position the spiral CCFL tube. The casing surrounds the lamp tube and is assembled with the base, and the casing is a transparent casing or a fence-shaped casing. The reflection component wraps at least a part of the electronic device, and the tube body of the lamp tube is arranged around the reflection component. The reflector assembly reflects the light emitted by the lamp tube, thereby increasing the illuminance of the lighting device.

In terms of the form of the lamp tube, the lamp tube can be a double helix lamp tube, or a C-shaped spiral lamp tube, or a U-shaped spiral lamp tube. The two tail ends of the tube body of these lamp tubes are away from the base, and the two tail ends are located on the top side of the tube body. The pipe body has a bent part and at least two helical parts, two ends of the bent part are respectively connected to one ends of the two helical parts, and the other ends of the two helical parts are away from the base.

The tube body of the C-shaped or U-shaped lamp tube has a C-shaped or U-shaped bent portion, and the C-shaped or U-shaped bent portion is located at the bottom side of the tube body. The tube body is between the base and the electrodes. The C-shaped bending part refers to a continuously curved arc, such as a C-shaped; the U-shaped bending part is composed of two chamfers approximately 90 degrees and a short straight line connecting the two chamfers. Its shape is like U letter.

The coiled diameter of the lamp tube can also vary with the number of turns, that is, it can vary along the coiled axis. For a double helix lamp tube, or a C-shaped lamp tube, or a U-shaped lamp tube, the tube body has a bending part, a first helical part, a second helical part, a third helical part, and a fourth helical part. The folding part connects the first helical part and the second helical part, the first helical part is arranged between the third helical part and the base, the coiling diameter of the first helical part is different from that of the third helical part, and the second helical part is arranged Between the fourth helical part and the base, the coiling diameter of the second helical part is different from that of the fourth helical part.

Based on the above, because in the lighting device according to the present invention, the electrodes of the lamp tube are not arranged on the base, but are arranged on the top side of the tube body and opposite to the base, compared with the conventional spiral lamp, it is basically The space reserved above the base for the tail end of the lamp tube or the electrode can be reduced, and then the base can be narrowed to achieve the effect of reducing the size of the base.

Description of drawings

Fig. 1 is a side view of a lighting device according to a preferred embodiment of the present invention;

Fig. 2 is a top view of the lighting device according to Fig. 1;

Fig. 3 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 4 is a top view of the lighting device according to Fig. 3;

Fig. 5 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 6 is a top view of the lighting device according to Fig. 5;

Fig. 7 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 8 is a top view of the lighting device according to Fig. 7;

Fig. 9 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 10 is a top view of the lighting device according to Fig. 9;

Fig. 11 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 12 is a top view of the lighting device according to Fig. 11;

Fig. 13 is a side view of another lighting device according to a preferred embodiment of the present invention;

Fig. 14 is a top view of the lighting device according to Fig. 13;

Fig. 15 is a schematic diagram of a lighting device according to a preferred embodiment of the present invention; and

16A to 16F are schematic diagrams of multiple forms of the casing of the lighting device of FIG. 15 .

Explanation of main component symbols

1, 1a, 2, 2a, 3, 3a, 4: lighting equipment

11, 21, 31, 41: base

111, 211, 311, 411: connectors

12, 22, 32, 42: Electronics

13, 23, 33, 43: spiral cold cathode fluorescent lamps

131: tube body

1311, 1312, 2311, 2312, 3311, 3312: tail end

134, 234, 334: top side

135, 235, 335: bottom side

1313, 2313, 3313: first helix

1314, 2314, 3314: second helix

1315, 2315: bending part

2316, 3316: The third helix

2317, 3317: The fourth helix

3318: bending part

132, 133, 232, 233, 332, 333: electrodes

14, 24, 34: reflective components

15, 25, 35, 45, 45a～45e: Housing

451: fence part

452, 453: Subshells

454: solid part

455: opening

161, 162: Conductive components

171, 172, 271, 272, 371, 372, 471, 472: positioning components

D1, D2: Coil diameter

Detailed ways

The following will describe spiral CCFL tubes according to various embodiments of the present invention with reference to the accompanying drawings.

As shown in Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 are respectively a side view and a top view of a lighting device 1 according to a preferred embodiment of the present invention.

The lighting device 1 includes a base 11 and a spiral cold cathode fluorescent lamp 13 (hereinafter referred to as the spiral lamp 13), the spiral lamp 13 has a tube body 131 and two electrodes 132, 133, and the electrodes 132, 133 are respectively located on the tube body 131 The two ends 1311, 1312 of the tube body 131, the base 11 and the two electrodes 132, 133 are respectively located on both sides of the tube body 131. The tube body 131 is interposed between the base 11 and the electrodes 132 , 133 . The tube body 131 of the lamp tube 13 is disposed adjacent to the base 11 , and the electrodes 132 , 133 are disposed away from the base 11 . The tube body 131 is located between the top side 134 and the bottom side 135 of the spiral light tube 13 , and the base 11 is adjacent to the bottom side 135 of the spiral light tube 13 .

The spiral lamp tube 13 stands upright on the base 11 , and the bottom side 135 is assembled with the base 11 . Seen from the base 11 below the spiral lamp tube 13 , the electrodes 132 , 133 are disposed on the top side 134 of the spiral lamp tube 13 , and the base 11 is adjacently disposed on the bottom side 135 of the spiral lamp tube 13 .

The tube body 131 has a first helical part 1313, a second helical part 1314, and a bending part 1315. The other end of the second spiral portion 1314 is away from the base 11 and serves as two ends 1311 , 1312 of the tube body 131 .

In this embodiment, the lighting device 1 further includes a housing 15 and two conductive components 161 , 162 , the housing 15 encloses the spiral lamp tube 13 and is assembled with the base 11 . In addition, the casing 15 can completely cover the spiral lamp tube 13 or partially surround the spiral lamp tube 13 .

The electronic device can be disposed in the base 11 , and the two electrodes 132 , 133 are electrically connected to the electronic device through the conductive components 161 , 162 . Electronic devices are inverters, coils, circuit boards or components of inverters. The conductive components 161 , 162 are disposed inside the spiral lamp tube 13 , and the spiral lamp tube 13 surrounds the conductive components 161 , 162 .

The base 11 is provided with a connector 111, which can be screwed into a general lamp holder, so that the lighting device 1 can be installed in the lamp holder and obtain power supply, which will be supplied to the electronic device 12 to drive the spiral lamp tube 13 to emit light .

In addition, the spiral cold cathode fluorescent lamp can be made from finished cold cathode fluorescent lamps. The finished cold cathode fluorescent lamp refers to the lamp tube that has been sealed with low-pressure gas and mercury, and electrodes have been installed at both ends of the lamp tube. After the thin straight cold cathode fluorescent tube is heated and bent, the tube is wound along the axial direction so that the tube is in a spiral shape. The low-pressure gas and mercury sealed inside the lamp tube will still be evenly distributed without uneven concentration.

Since the spiral cold cathode fluorescent tube is a tube wound into multiple turns, its illuminance can be effectively improved, and it has the advantages of the cold cathode fluorescent tube at the same time: long service life, low temperature, low power consumption and electrical stability.

As shown in Fig. 3 and Fig. 4, Fig. 3 and Fig. 4 are respectively a side view and a top view of another lighting device 1a according to a preferred embodiment of the present invention.

The lighting device 1 a further includes positioning components 171 , 172 , and the positioning components 171 , 172 are arranged on the base 11 to position the spiral lamp tube 13 . The positioning components 171 and 172 are arranged on the outside of the spiral light tube 13 . In addition, it is also possible to set them on the inside of the spiral light tube 13 , or it is also possible to set the positioning components on both the inside and outside of the spiral light tube 13 .

As shown in Fig. 5 and Fig. 6, Fig. 5 and Fig. 6 are respectively a side view and a top view of another lighting device 2 according to a preferred embodiment of the present invention.

The lighting device 2 also includes electronics 22 and a reflective assembly 24 . The electronic device 22 is disposed on the base 21 , and the two electrodes 232 and 233 are electrically connected to the electronic device 21 .

The electronic device 22 stands upright on the base 21 , and the electrodes 232 are electrically connected to the electronic device 22 through wires or welding. The electrodes 233 can be electrically connected to the electronic device 22 through wires or welding. In addition, the electrode 233 can also be directly electrically connected with other electronic devices in the base 21 , and the connection method can be through a wire or the like.

The electronic device 22 is an inverter, a coil, a circuit board or a component of an inverter. In this embodiment, the electronic device 22 is a circuit board of an inverter. In other implementation forms, the electronic device can be, for example, the secondary side coil of the transformer, and the primary side coil of the transformer and the rest of the inverter are still disposed in the base 21 .

In addition to being assembled with the base 21 , the spiral lamp tube 23 can also be assembled with the electronic device 22 or with the reflector 24 . The spiral lamp tube 23 is not limited to being assembled with only one of the base 21 , the electronic device 22 and the reflective assembly 24 , but also can be assembled with at least two of the base 21 , the electronic device 22 and the reflective assembly 24 at the same time.

The reflective component 24 covers at least a part of the electronic device 22 , and the spiral lamp tube 23 is disposed around the reflective component 24 . The reflection assembly 24 reflects the light emitted by the spiral lamp tube 23 , thus improving the illuminance of the lighting device 2 . The reflection component 24 can be a metal shell or a plastic shell, and at least a part of the electronic device 22 can also be accommodated in the shell.

The tube body 231 of the spiral lamp tube 23 is interposed between the base 21 and the electrodes 232 , 233 , and the electrodes 232 , 233 are connected to the electronic device 22 . Two tail ends 2311 , 2312 of the tube body 231 are away from the base 21 , and the tail ends 2311 , 2312 are located at the top side 234 of the spiral lamp 23 .

The spiral lamp tube 23 is a double spiral lamp tube, and the tube body 231 has a first spiral portion 2313 , a bent portion 2315 and a third spiral portion 2316 . The bent portion 2315 is in the shape of an S, and the bent portion is parallel to the base 21 . The bent portion 2315 is located on the bottom side 235 to be adjacent to the base 21 . Two ends of the bent portion 2315 are respectively connected to the first helical portion 2313 and the third helical portion 2316 , and the first helical portion 2313 and the third helical portion 2316 are coiled alternately from the bottom side 235 to the top side 234 . On the top side 234, the first helical part 2313 and the third helical part 2316 are connected to the tail ends 2311, 2312, respectively. In addition, the bending portion 2315 may also be in other curved shapes.

In addition, the coil diameter of the tube body 231 may also vary with different turns, that is, vary along the coil axis. As shown in Fig. 7 and Fig. 8, Fig. 7 and Fig. 8 are respectively a side view and a top view of another lighting device 2a according to a preferred embodiment of the present invention.

The tube body 231 has a first helical part 2313 , a second helical part 2314 , a bending part 2315 , a third helical part 2316 and a fourth helical part 2317 . The third helical part 2316, the first helical part 2313, the bent part 2315, the second helical part 2314 and the fourth helical part 2317 communicate in sequence, and the two ends of the third helical part 2316 connect the first helical part 2313 and the tail end 2311 , both ends of the fourth helical portion 2317 are connected to the second helical portion 2314 and the tail end 2312 .

The first helical part 2313 is disposed between the third helical part 2316 and the base 21, the coiling diameter D1 of the first helical part 2313 is smaller than the coiling diameter D2 of the third helical part 2316, and the second helical part 2314 is disposed on the fourth helical part Between 2317 and the base 21 , the coiling diameter of the second helical part 2314 is smaller than the coiling diameter of the fourth helical part 2317 . The coil diameter D1 of the first helix 2313 from the bottom side 235 is smaller than the coil diameter D2 of the third helix 2316 from the top side 234 , and the second helix 2314 and the fourth helix 2317 have a similar relationship. In this way, in addition to still reducing the size of the base 21 , the shielding between the parts of the tube body 231 itself can also be reduced, thereby improving the illuminance. In addition, the coiled diameter of the tube body 231 may gradually increase from the bottom side to the top side.

In this embodiment, the coiling diameter of the second helical part 2314 is the same as the coiling diameter D1 of the first helical part 2313, and the coiling diameter of the fourth helical part 2317 is the same as the coiling diameter D2 of the third helical part 2316. In addition, the coil diameter of the second helical part 2314 may be different from the coil diameter D1 of the first helical part 2313 , and the coil diameter of the fourth helical part 2317 may be different from the coil diameter D2 of the third helical part 2316 .

Since the components in the embodiment of Fig. 5 to Fig. 8, such as the base, the electronic device, the spiral cold cathode fluorescent lamp, the electrode, the reflector assembly and the housing have the same or similar structure, function and connection relationship with the previous or subsequent embodiments Or manufacturing methods, variations, etc., so the details of these components will not be repeated here.

As shown in FIG. 9 and FIG. 10 , FIG. 9 and FIG. 10 are respectively a side view and a top view of another lighting device 3 according to a preferred embodiment of the present invention.

Different from the foregoing embodiments, the description will be made below with a C-shaped or U-shaped spiral CCFL tube. The lighting device 3 includes a base 31 , an electronic device 32 , a C-shaped or U-shaped spiral cold cathode fluorescent lamp 33 (hereinafter referred to as the spiral lamp 33 ), a reflector 34 and a housing 35 . The tube body 331 of the spiral lamp tube 33 is arranged on the base 31, the electronic device 32 is arranged on the base 31, the spiral lamp tube 33 is arranged on the electronic device 32, and the electrodes 332, 333 are arranged on the two tail ends 3311, 333 of the tube body 331 respectively. 3312 , the tube body 331 is interposed between the base 31 and the electrodes 332 and 333 . The base 31 is located at the bottom side 335 of the spiral light tube 33 , and the electrodes 332 , 333 are located at the top side 334 of the spiral light tube 33 . Two tail ends 3311 , 3312 of the tube body 331 are away from the base 31 , and the tail ends 3311 , 3312 are located at the top side 334 of the spiral lamp 33 .

The spiral lamp tube 33 has a first spiral portion 3313 , a bent portion 3318 and a second spiral portion 3314 . The bent portion of the bent portion 3318 is substantially perpendicular to the base 31 . The bent part 3318 is located at the bottom side 335 of the spiral lamp tube 33 so as to be adjacent to the base 31. The spiral part 3314 is alternately wound along the electronic device 32 from the bottom side 335 to the top side 334 . On the top side 334, the first helical part 3313 and the second helical part 3314 are connected to the tail ends 3311, 3312, respectively.

The bending portion 3318 is not bent along the electronic device 32 . In this embodiment, the axis around which the first helical portion 3313 and the second helical portion 3314 are coiled forms an included angle with the axis along which the bending portion 3318 bends.

The bent portion 3318 is C-shaped or U-shaped, and its two ends open toward the same direction. The bent portion 3318 can be a continuously curved arc, such as a C-shape; or it can be formed by two substantially 90-degree chamfers and a short straight line connecting the two chamfers, such as a U-shape. The area radius of the bending portion 3318 is smaller than the coiling radius of the first helical portion 3313 or the second helical portion 3314 , and the coiling radius refers to half of the coiling diameter. For the C shape, the radius of curvature is the radius of the arc, and for the U shape, the zone radius is defined for the chamfered part.

In addition, the coiled diameter of the lamp tube can also vary with different turns, that is, vary along the coiled axis. As shown in Fig. 11 and Fig. 12, Fig. 11 and Fig. 12 are respectively a side view and a top view of another lighting device 3a according to a preferred embodiment of the present invention. In the lighting device 3a, the spiral lamp tube 33 further includes a third spiral portion 3316 and a fourth spiral portion 3317 . The third helical part 3316, the first helical part 3313, the bent part 3318, the second helical part 3314 and the fourth helical part 3317 communicate in sequence, and the two ends of the third helical part 3316 connect the first helical part 3313 and the tail end 3311 , both ends of the fourth helical part 3317 are connected to the second helical part 3314 and the tail end 3312 .

The first helical part 3313 is disposed between the third helical part 3316 and the base 31, the coiling diameter D1 of the first helical part 3313 is smaller than the coiling diameter D2 of the third helical part 3316, and the second helical part 3314 is arranged on the fourth helical part Between 3317 and the base 31 , the coiling diameter of the second helical part 3314 is smaller than the coiling diameter of the fourth helical part 3317 . In this embodiment, the coiling diameter of the second helical part 3314 is the same as the coiling diameter D1 of the first helical part 3313 , and the coiling diameter of the fourth helical part 3317 is the same as the coiling diameter D2 of the third helical part 3316 . In addition, the coil diameter of the second helical part 3314 may be different from the coil diameter D1 of the first helical part 3313 , and the coil diameter of the fourth helical part 3317 may be different from the coil diameter D2 of the third helical part 3316 .

Furthermore, the first helix and the second helix of the lamp tube may have different lengths. As shown in Fig. 13 and Fig. 14, Fig. 13 and Fig. 14 are respectively a side view and a top view of another lighting device 3b according to a preferred embodiment of the present invention.

The lengths of the first helical part 3313 and the second helical part 3314 of the tube body 331 of the lamp tube 33 are different. In the opposite direction, the first helical part 3313 will coil half a turn more than the second helical part 3314, and the length of the first helical part 3313 will be longer than the second helical part 3314 by about the product of the pi and the coiling radius (π× coil radius). The advantage of this is that the heights from the bent portion 3318 to the two tail ends 3311, 3312 are approximately the same, thus facilitating the assembly of the lighting device 3b.

In addition, there may be an angle between the opening direction of the first helical part 3313 at the tail end 3311 and the direction of the opening of the second helical part 3314 at the other tail end 3312, that is, the two The directions the openings face are not parallel.

Since the components in the embodiment of Fig. 9 to Fig. 14, such as the base, electronic device, spiral cold cathode fluorescent lamp, electrode, reflector assembly and housing have the same or similar structure, function and connection relationship with the previous or subsequent embodiments Or manufacturing methods, variations, etc., so the details of these components will not be repeated here.

In the above embodiments, the casing may be a transparent casing, and in addition, it may also be a fence-shaped casing as shown in FIGS. 15 to 16F .

As shown in Figure 15, the lighting device 4 includes a base 41, an electronic device 42, a spiral cold cathode fluorescent lamp 43 (hereinafter referred to as the lamp 43) and a housing 45, the lamp 43 is arranged on the base 41, and the housing 45 has The fence part 451 , the casing 45 surrounds the lamp tube 43 .

The housing 45 covers the lamp tube 43 and is connected to the base 41. The housing 45 does not completely cover the lamp tube 43, and the fence part 451 only partially covers the lamp tube 43. Therefore, the light emitted by the lamp tube 43 is emitted from the fence part 451. The hollow part passes through, and the luminous efficiency of the lighting device 4 is also improved accordingly.

The fence portion 451 of the casing 45 is disposed along the periphery of the lamp tube 43 to form a protection space around the lamp tube 43 to protect the lamp tube 43 from directly receiving external impact.

The housing 45 has an opening 455 which is a space of the fence portion 451 , and in this embodiment, the opening 455 occupies more than 50% of the surface area of the housing 45 .

In addition, a color filter can be provided in the opening 455 , so that the light emitted from the lamp tube 43 can present different colors after passing through the color filter. Alternatively, a gradient filter can be provided in the opening 455, and the light emitted from the lamp tube 43 can change in brightness after passing through the gradient filter, which is suitable as a scene lamp.

Furthermore, the housing can be composed of a single component, or include at least two sub-housings. When the shell includes multiple sub-shells, a single sub-shell can be all palisade-shaped or all solid; or, a single sub-shell can be partially palisade-shaped and partially solid, with the The shaped part is used as the fence part of the housing, and the solid part of the sub-housing is used as the solid part of the housing. Details of the changes will be described with reference to FIGS. 16A to 16F .

FIG. 16A is a schematic diagram of the housing 45 of the lighting device 4 of FIG. 15 . As shown in FIG. 20A , the casing 45 is in the shape of a fence as a whole, and the thickness of the fence in the fence part 451 and the area ratio of the opening will affect the amount of light emitted. The material of the fence-shaped casing 45 is plastic, or glass, or ceramic, or metal or metal alloy.

As shown in FIG. 16B, the housing 45a includes two sub-housings 452, 453, each of which occupies half of the housing 45, and the housing is formed by bonding, screwing, or snap-fitting. 45. In this embodiment, the sub-housings 452 , 453 are also fence-shaped, which are part of the fence portion 451 .

As shown in Figure 16C, the housing 45b also includes a solid part 454, the fence part 451 and the solid part 454 are sub-housings 452, 453 of the housing 45 respectively, and the two sub-housings 452, 453 are bonded, or screwed, The casing 45 is formed by a combination method such as snap-fit or snap-fit. That is, one of the sub-cases 452 is fence-shaped as the fence part 451 , and the other sub-case 453 is solid as the solid part 454 and does not have an opening formed by the fence.

The solid part 454 surrounds a part of the pipe body 43 , and the solid part 454 or the barrier part 451 of the housing 45 is assembled with the base 41 . The material of the fence part 451 is plastic or metal. The material of the solid part 454 is plastic or metal. The fence part 451 and the solid part 454 can be made of the same material or different materials. Example: The fence part is plastic and the solid part is metal.

As shown in Figure 16D, the housing 45c can be divided into two parts, the fence part and the solid part, from the bottom side to the top side. The fence part 451 and the solid part 454 are only arranged around the lamp tube 43, and the fence part 451 and the solid part 454 are combined. Afterwards, the lamp tube 43 is surrounded.

The housing has two sub-housings 452, 453. A part of the sub-housing 452 is fence-shaped while the other part is solid. The fence-shaped part of the sub-housing 452 is used as the fence part 451 of the housing 45. The sub-housing 452 is solid. The part of the solid part 454 of the housing 45. The sub-case 453 is the same as the sub-case 452 . The solid portion 454 is adjacent to the base 41 for assembly with the base 41 .

The fence part 451 and the solid part 454 can be made of the same material or different materials. For example: fence portion 451 is plastic and solid portion 454 is metal.

In addition, the sub-housing 452 and the sub-housing 453 may be made of the same material or different materials. For example: the sub-housing 452 is plastic, and the sub-housing 453 is metal.

As shown in FIG. 16E , the fence part 451 of the casing 45d includes a plurality of railings 4511 , which do not touch each other and cross each other, but are directly assembled with the base 41 , and the railings 4511 are arranged along the periphery of the lamp tube 43 . In addition, the height of the railing 4511 is greater than the height of the light tube 43 .

As shown in FIG. 16F , the fence portion 451 of the housing 45e surrounds the light tube 43 , and the top of the light tube 43 is not covered by the fence portion 451 . For example, the fence portion 451 surrounds about one-third of the height of the lamp tube 43 .

In summary, in the lighting device according to the present invention, the spiral CCFL tube is interposed between the base and at least one of the electrodes, and at least one electrode and a tail end of the spiral CCFL tube are set away from the base, Compared with the conventional spiral lamp, the space reserved above the base for the tail end of the spiral CCFL tube or the electrode can be reduced, and the base can be narrowed to achieve the effect of reducing the size of the base.

The above description is only illustrative, not restrictive. Any equivalent modifications or changes made without departing from the spirit and scope of the present invention shall be included in the appended claims.

Claims (10)

1. A lighting device comprising: a base; and A spiral cold cathode fluorescent lamp has a tube body and two electrodes, the electrodes are respectively located at two ends of the tube body, and the base and the electrodes are respectively located at two sides of the tube body. 2. The lighting device according to claim 1, further comprising an electronic device, the electronic device is disposed on the base, and the electrodes are electrically connected to the electronic device. 3. The lighting device as claimed in claim 1, further comprising an electronic device disposed in the base, and the electrodes are electrically connected to the electronic device. 4. The lighting device of claim 1, further comprising: A positioning component is arranged on the base to position the spiral cold cathode fluorescent lamp. 5. The lighting device of claim 1, further comprising: A casing surrounds the spiral cold cathode fluorescent lamp and is assembled with the base. 6. The lighting device of claim 1, wherein the spiral CCFL tube is a double spiral tube. 7. The lighting device according to claim 1, wherein the spiral CCFL tube is a C-shaped or U-shaped spiral tube. 8. The lighting device according to claim 1, wherein the tube body has a bending portion, a first spiral portion and a second spiral portion, and the two ends of the bending portion are respectively connected to the first spiral part and one end of the second helical part, and the other end of the first helical part and the second helical part is away from the base. 9. The lighting device according to claim 1, wherein the tube body has a bending portion, a first spiral portion, a second spiral portion, a third spiral portion, and a fourth spiral portion, the The two ends of the bending part are respectively connected to the first helical part and the second helical part, the first helical part is arranged between the third helical part and the base, and the first helical part The coiling diameter of the second helical part is different from the coiling diameter of the third helical part, the second helical part is arranged between the fourth helical part and the base, the coiling diameter of the second helical part is different from the Coil diameter of the fourth helix. 10. The lighting device of claim 1, further comprising: A reflective component wraps at least a part of the electronic device, and the spiral CCFL tube is arranged around the reflective component.

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