CN216556999U

CN216556999U - Lamp holder and explosion-proof lamp

Info

Publication number: CN216556999U
Application number: CN202123341353.2U
Authority: CN
Inventors: 周明杰; 王池
Original assignee: Shenzhen Haiyangwang Petroleum Lighting Technology Co ltd; Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Current assignee: Shenzhen Haiyangwang Petroleum Lighting Technology Co ltd; Oceans King Lighting Science and Technology Co Ltd; Oceans King Dongguan Lighting Technology Co Ltd; Shenzhen Oceans King Lighting Engineering Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-17
Anticipated expiration: 2031-12-27

Abstract

The lamp holder comprises a shell, a light source plate and a lens, wherein the lens is connected with the shell and surrounds the shell to form a light source cavity, and the light source plate is positioned in the light source cavity; the light source board includes base plate and a plurality of illuminating part, the base plate install in the casing, the illuminating part set up in the base plate orientation the surface of lens, the illuminating part is followed the circumference interval of base plate sets up, the lens orientation the surface of illuminating part is provided with the microstructure that is used for diverging light. The light that the light source board of this lamp holder sent is comparatively dispersed, and simultaneously, the light that the light-emitting component sent is through the micro-structure refraction effect, and light is the crisscross for the light distribution uniformity degree that lens jetted out is good, has reached the even not dazzling effect of facula, simultaneously, also can reduce the photochromic phenomenon inconsistent, in addition, in follow-up use, this lamp holder still can be used for two colour temperature light sources.

Description

Lamp holder and explosion-proof lamp

Technical Field

The application belongs to the technical field of the illumination, especially, relate to a lamp holder and explosion-proof lamp.

Background

The explosion-proof lamp is used in dangerous places where combustible gas and dust exist, and can prevent electric arcs, sparks and high temperature which are possibly generated in the lamp from igniting the combustible gas and dust in the surrounding environment, so that the lamp meets the explosion-proof requirement; the explosion-proof lamp is widely applied to industries such as petroleum, petrochemical industry and nuclear power, provides sufficient illumination for equipment operation, equipment maintenance and the like, and has the problems of uneven light spots and dazzling.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a lamp holder and explosion-proof lamp, aim at solving the explosion-proof lamp among the prior art and have the inhomogeneous and dazzling technical problem of facula.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a lamp cap, characterized in that: the LED lamp comprises a shell, a light source plate and a lens, wherein the lens is connected with the shell and encloses to form a light source cavity, and the light source plate is positioned in the light source cavity; the light source board comprises a substrate and a plurality of light-emitting pieces, the substrate is mounted on the shell, the light-emitting pieces are arranged on the surface, facing the lens, of the substrate, the light-emitting pieces are arranged along the circumferential direction of the substrate at intervals, and microstructures used for diverging light rays are arranged on the surface, facing the light-emitting pieces, of the lens.

Optionally, the microstructure is an irregular microstructure.

Optionally, the illuminating part comprises a plurality of lamp beads, and the lamp beads are uniformly distributed on the substrate.

Optionally, the lamp beads are divided into a plurality of groups, the lamp beads are distributed at intervals along the circumferential direction of the substrate, and the lamp beads in each group are arranged at intervals along the radial direction of the substrate in sequence.

Optionally, the lens includes a bottom plate and a ring wall surrounding the bottom plate, one end of the ring wall facing away from the bottom plate is connected to the housing, the substrate is located in the ring wall, and the microstructure is disposed on the bottom plate.

Optionally, the position of the bottom plate opposite to each light emitting element is recessed back to the light emitting element to form an accommodating cavity, the light emitting element is located in the accommodating cavity, and the microstructure is arranged on the bottom surface of the accommodating cavity opposite to the light emitting element.

Optionally, the bottom plate includes a middle area abutting against the substrate and a plurality of light emitting areas circumferentially distributed along the middle area, and each of the light emitting elements is disposed in one-to-one correspondence with each of the light emitting areas;

the light emitting area comprises a light emitting part, a connecting ring part and a butting part, one end of the connecting ring part is connected with the light emitting part, the connecting ring part is arranged around the light emitting part, and the connecting ring part and the light emitting part are arranged around the light emitting part to form the accommodating cavity;

the abutting part is connected with the other end of the connecting ring part, is arranged around the outside of the connecting ring part and abuts against the substrate;

the light emitting piece is located in the connecting ring portion, and the surface of the light emitting portion facing the light emitting piece is provided with the microstructures.

Optionally, the lens is a PC lens.

Optionally, the lamp holder further includes an explosion-proof mask, and the explosion-proof mask is covered on the lens and connected to the housing.

One or more technical solutions in the lamp cap provided by the present application have at least one of the following technical effects: this lamp holder, when using, the light that the illuminating part sent jets out through lens, thereby realize the illumination, and because the illuminating part sets up along the circumference interval of base plate, and lens are provided with the microstructure that is used for diverging light towards the surface of illuminating part, make the light that the light source board sent comparatively disperse like this, and simultaneously, the light that the illuminating part sent passes through the microstructure refraction effect, light is the crisscross, and then make the light distribution degree of consistency that the lens jetted out good, the even not dazzling effect of facula has been reached, and simultaneously, also can reduce the inconsistent phenomenon of photochromic, in addition, in subsequent use, this lamp holder still can be for the use of dual colour temperature light source.

Another technical scheme adopted by the application is as follows: an explosion-proof lamp comprises a driving device and the lamp holder, wherein the driving device is connected with the lamp holder and used for driving the light-emitting piece to emit light.

The utility model provides an explosion-proof lamp, through having adopted foretell lamp holder, because the circumference interval of illuminating part along the base plate sets up, and the surface that lens orientation illuminating part was provided with the micro-structure that is used for diverging light, the light that makes the light source board send like this is comparatively dispersed, and simultaneously, the light that the illuminating part sent passes through the micro-structure refraction effect, the light is crisscross, and then make the light distribution degree of consistency that lens jetted out good, the even not dazzling effect of facula has been reached, and simultaneously, also can reduce the inconsistent phenomenon of photochromic, in addition, in follow-up use, this explosion-proof lamp still can use for the dual colour temperature light source.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a lamp cap provided in an embodiment of the present application.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a partially enlarged view of fig. 2 at B.

Fig. 4 is an exploded view of the lighthead shown in fig. 1.

Fig. 5 is a schematic structural view of the light source board shown in fig. 4.

Fig. 6 is a schematic structural view of the lens shown in fig. 4.

Fig. 7 is a schematic structural diagram of an explosion-proof lamp according to another embodiment of the present application.

Fig. 8 is a light spot diagram of a lens in a conventional lamp cap without microstructures.

Fig. 9 is a light spot diagram of a lens in a lamp holder provided with a microstructure according to an embodiment of the present application.

Wherein, in the figures, the respective reference numerals:

10-lamp holder 11-shell 12-light source board

13-lens 14-explosion-proof face mask 15-protective cover

20-drive means 30-antenna 40-fastener

50-bracket 60-sealing ring 110-light source cavity

111-groove 112-heat sink 121-substrate

122, luminous piece 1221, lamp bead 131 and bottom plate

132-annular wall 133-flange 1310-accommodation cavity

1311-intermediate area 1312-light emitting area 13121-light emitting portion

13122-connecting ring 13123-abutting portion.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in fig. 1-7, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 6, in an embodiment of the present application, a lamp holder 10 is provided, the lamp holder 10 is used for emitting light to realize illumination, and the lamp holder 10 can be applied to lighting fixtures such as a ceiling lamp, a desk lamp, a wall lamp, a floor lamp, and an explosion-proof lamp, wherein the embodiment of the present application takes the explosion-proof lamp as an example for description, and specifically, the following are provided:

referring to fig. 1, 2 and 4, the lamp cap 10 includes a housing 11, a light source board 12 and a lens 13, the lens 13 is connected to the housing 11 and encloses a light source cavity 110, and the light source board 12 is located in the light source cavity 110; the light source board 12 includes a substrate 121 and a plurality of light emitting elements 122, the substrate 121 is mounted on the housing 11, the light emitting elements 122 are disposed on a surface of the substrate 121 facing the lens 13, the light emitting elements 122 are disposed at intervals along a circumferential direction of the substrate 121, and a microstructure (not shown) for diverging light is disposed on a surface of the lens 13 facing the light emitting elements 122, where the microstructure refers to a micro surface shape having a specific function, such as a groove, a micro lens array, or even a diffusing micro particle.

The lamp holder 10 of the embodiment of the application, when using, the light that light-emitting piece 122 sent jets out through lens 13, thereby realize the illumination, and because light-emitting piece 122 sets up along the circumference interval of base plate 121, and lens 13 is provided with the microstructure that is used for diverging light towards the surface of light-emitting piece 122, make the light that light source board 12 sent comparatively disperse like this, simultaneously, the light that light-emitting piece 122 sent is through the refraction effect of microstructure, light is crisscross, and then make the light distribution uniformity that lens 13 jetted out good, the even not dazzling effect of facula has been reached, simultaneously, also can reduce the inconsistent phenomenon of photochromic, in addition, in subsequent use, this lamp holder 10 still can use for the dual-color temperature light source.

In the embodiment of the present application, as shown in fig. 2 and fig. 3, the substrate 121 is a circuit board, and the circuit board is fixed on the housing 11 by the fastener 40, so as to fix the light source board 12. The lamp cap 10 conducts microstructure processing on the lens 13, so that the dazzling phenomenon is reduced to a great extent, the uniformity of the lamp cap 10 is improved, and the weight of the lens 13 is reduced.

In the embodiment of the present application, the number of the light emitting elements 122 may be 2, 3, 4 or more than 4, and the specific number thereof may be selected according to actual needs, which is not limited herein, the more the number of the light emitting elements 122 is, the more uniform the light emitted from the light source plate 12 is, and the better uniformity of the light spots is.

Exemplarily, as shown in fig. 4 and 5, the substrate 121 is circular, the number of the light emitting elements 122 is 8, the 8 light emitting elements 122 are in an annular array with the center of the circle of the circular substrate 121 as the center, and the 8 light emitting elements 122 are uniformly distributed around the substrate 121, so that the light emitted from the light source plate 12 is dispersed, the uniformity of the light spot is good, and the glare effect is reduced; as can be seen from fig. 8 and 9, after the light emitted from the light source plate 12 is refracted by the micro-structures, the light is more intricately intersected, the uniformity of the light emitted from the lens 13 is better, and the effect of better uniformity of light spots and no glare can be achieved.

In another embodiment of the present application, the microstructure of the lamp cap 10 is provided as an irregular microstructure. Therefore, after the light is refracted by the irregular microstructure, the light is more intricately crossed, the uniformity of the light emitted by the lens 13 is better, and the effect of better uniformity of light spots and no glare can be achieved. Of course, in other embodiments, the microstructures may be regular microstructures.

In another embodiment of the present application, as shown in fig. 5, the light emitting element 122 of the lamp head 10 includes a plurality of light beads 1221, and the light beads 1221 are uniformly distributed on the substrate 121. The lamp beads 1221 in each luminous piece 122 are uniformly distributed, heat generated by the lamp beads 1221 is not concentrated, heat dissipation is more uniform, heat loss of the lamp beads 1221 can be reduced, lighting effect is higher, and the service life of the lamp beads 1221 is longer; in addition, the light emitted by the light source plate 12 is more uniform, and the dazzling effect is reduced.

In a specific embodiment, as shown in fig. 5, the lamp beads 1221 of the lamp head 10 are divided into a plurality of groups, the plurality of groups of lamp beads 1221 are distributed along the circumferential direction of the substrate 121 at intervals, and the lamp beads 1221 in each group are sequentially arranged along the radial direction of the substrate 121 at intervals. The lamp pearl on whole base plate 121 is along base plate 121 radial and circumference evenly distributed, and lamp pearl 1221 distributes more evenly, and light source board 12 sends light also more evenly like this, and it is effectual to reduce dazzling, and in addition, the heat that lamp pearl 1221 produced is not concentrated, and the heat dissipation is more even, can reduce lamp pearl 1221's heat waste, and the light efficiency is higher, and lamp pearl 1221 life is longer. More specifically, the lamp bead 1221 adopts a high-light-efficiency LED lamp bead, so that the energy consumption is lower and the environment is more environment-friendly than other types of light sources under the same illumination requirement.

Exemplarily, referring to fig. 5, the lamp beads 1221 are divided into three groups, where the lamp bead groups on two sides each include three lamp beads 1221, the three lamp beads 1221 are spaced apart along the radial direction of the substrate 121, and the lamp bead group in the middle includes one lamp bead 1221, and the lamp bead 1221 is located in the middle; when the middle lamp bead group is provided with the fastening member 40 for fixing the substrate 121 on the housing 11, the light emitting member 122 is provided with only two lamp beads 1221 groups, that is, the two lamp beads 1221 groups are respectively disposed on two sides of the fastening member 40.

In another embodiment of the present application, as shown in fig. 3, 4 and 6, the lens 13 of the lamp cap 10 includes a bottom plate 131 and a ring wall 132 surrounding the bottom plate 131, an end of the ring wall 132 opposite to the bottom plate 131 is connected to the housing 11, the substrate 121 is located in the ring wall 132, and the microstructure is disposed on the bottom plate 131. Specifically, the housing 11, the bottom plate 131 and the annular wall 132 surround to form the light source cavity 110, and the light emitting member 122 is covered in the lens 13, so that the microstructures on the bottom plate 131 of the light emitted by the light emitting member 122 are refracted and dispersed and then emitted, thereby reducing the glare effect of the light source plate 12.

In the embodiment of the present application, as shown in fig. 3, 4 and 6, the housing 11 is provided with a groove 111 surrounding the substrate 121, the end of the annular wall 132 facing away from the bottom plate 131 is provided with a flange 133, the flange 133 is inserted into the groove 111 and then fixed by the fastener 40, and then the casting material is poured into the groove 111, after the casting material is cured, the connection between the housing 11 and the lens 13 is sealed, that is, the light source cavity 110 is sealed, and the lamp cap 10 has good sealing effect and explosion-proof effect by adopting the casting material pouring and sealing manner, that is, the lens 13 and the housing 11 surround to form a pouring cavity (i.e., the light source cavity 110), and the light source plate 12 is located in the pouring cavity.

In the embodiment of the present application, the casting material may be silicone rubber, epoxy resin rubber, or two-component silicone rubber, but in other embodiments, the casting material may also be other materials, which are not listed here.

In the embodiment of the present application, referring to fig. 1, a heat sink 112 is disposed outside the housing 11, and the heat sink 112 can dissipate the heat generated by the light source board 12 in time, so that the lamp holder 10 has a good cooling effect; in addition, the shell 11 can be made of aluminum, copper, alloys thereof, and the like, so as to improve the cooling effect of the lamp holder 10.

In another embodiment of the present application, referring to fig. 3, 4 and 6, positions of the bottom plate 131 of the lamp cap 10 opposite to the light-emitting elements 122 are provided and are recessed back to the light-emitting elements 122 to form a receiving cavity 1310, the light-emitting elements 122 are located in the receiving cavity 1310, and the microstructures are disposed on the bottom surface of the receiving cavity 1310 opposite to the light-emitting elements 122. The accommodating cavities 1310 are arranged in one-to-one correspondence with the light-emitting members 122, that is, the light-emitting members 122 are located in a single accommodating cavity 1310, so that the light rays emitted by two adjacent light-emitting members 122 can be prevented from being influenced; in addition, the light emitting members 122 on the light source board 12 are distributed in the plurality of receiving cavities 1310, so that the volume of each receiving cavity 1310 can be set to be smaller, thereby reducing the volume of the whole light source cavity 110 and improving the explosion-proof performance.

In a specific embodiment, as shown in fig. 3, 4 and 6, the bottom plate 131 includes a middle region 1311 abutting against the substrate 121 and a plurality of light emitting regions 1312 circumferentially distributed along the middle region 1311, and each light emitting element 122 is disposed in one-to-one correspondence with each light emitting region 1312; the light emitting regions 1312 are sequentially arranged around the middle region 1311, light is emitted from the periphery of the whole lens 13, no light or less light is emitted from the middle region, so that the light is dispersed, the dazzling effect can be reduced, in addition, the middle region 1311 of the bottom plate 131 is abutted to the substrate 121, the bottom plate 131 can be supported by the shell 11, the structural strength of the lens 13 and the shell 11 which are connected together is better, meanwhile, the volume of the light source cavity 110 can be reduced, and the explosion-proof effect is improved.

Further, as shown in fig. 3, 4 and 6, the light emitting region 1312 includes a light emitting portion 13121, a connecting ring portion 13122 and a contact portion 13123, one end of the connecting ring portion 13122 is connected to the light emitting portion 13121, the connecting ring portion 13122 surrounds the light emitting portion 13121, and the connecting ring portion 13122 and the light emitting portion 13121 surround to form an accommodating cavity 1310; the contact part 13123 is connected to the other end of the connecting ring part 13122, surrounds the connecting ring part 13122, and contacts the substrate 121; the light emitting member 122 is located in the connecting ring portion 13122, and the surface of the light emitting portion 13121 facing the light emitting member 122 is provided with a microstructure. Light that illuminating part 122 sent jets out through light-emitting part 13121, illuminating part 122 is located each link portion 13122 one-to-one, two adjacent illuminating parts 122 separate through link portion 13122, avoid the influence each other, and simultaneously, two adjacent holding chambeies 1310 separate on base plate 121 through butt portion 13123 butt, can seal holding chamber 1310, like this can furthest reduce lens 13 and the volume that the casing 11 encloses and establishes formation light source chamber 110, in addition, also can improve lens 13 and casing 11 and connect back structural strength together, improve explosion-proof effect.

In another embodiment of the application, the lens 13 of the lamp cap 10 is provided as a PC lens 13 (PC: Polycarbonate). Specifically, the lens 13 is made of PC material by injection molding, which has high production efficiency, and the PC material has a slightly low light transmittance, thereby reducing the glare effect of the lamp cap 10.

In another embodiment of the present application, as shown in fig. 1 and 4, the lamp cap 10 is further provided with an explosion-proof cover 14, and the explosion-proof cover 14 covers the lens 13 and is connected to the housing 11. An explosion-proof mask 14 is fixed outside the lens 13, so that the explosion-proof performance of the lamp cap 10 can be further improved. It should be noted that the explosion-proof mask 14 is a transparent mask to ensure the light to be emitted.

In the embodiment of the present application, the explosion-proof mask 14 is hermetically connected to the housing 11 by a sealing ring 60 to improve the sealing performance and the explosion-proof performance of the lamp cap 10.

In another embodiment of the present application, the lamp cap 10 further comprises a protective cover 15, the protective cover 15 is covered outside the explosion-proof mask 14, and plays a role of protecting the explosion-proof mask 14, so as to prolong the service life of the lamp cap 10; the explosion proof face shield 14 and the protective cover 15 are secured to the housing 11 by fasteners 40.

The above-mentioned fastener 40 may be a screw, a screw or a bolt.

In another embodiment of the present application, as shown in fig. 7, there is provided an explosion-proof lamp, which includes the driving device 20 and the lamp cap 10, wherein the driving device 20 is connected to the lamp cap 10 and is used for driving the light-emitting member 122 to emit light. Specifically, the driving device 20 is mounted on the housing 11 and electrically connected to the circuit board of the light source board 12 to control the light emission of the LED lamp bead 1221; the driving device 20 is further provided with an antenna 30, and is connected with an intelligent system through the antenna 30 so as to realize intelligent control of the explosion-proof lamp; the driving device 20 is connected with a support 50, and the explosion-proof lamp can be suspended and fixed through the support 50, so that the explosion-proof lamp is convenient to use.

The explosion-proof lamp of this application embodiment, through having adopted foretell lamp holder 10, because illuminating part 122 sets up along the circumference interval of base plate 121, and lens 13 is provided with the microstructure that is used for diverging light towards the surface of illuminating part 122, make the light that light source board 12 sent comparatively disperse like this, and simultaneously, the light that illuminating part 122 sent passes through the microstructure refraction effect, light is crisscross, and then make the light distribution degree of consistency that lens 13 jetted out good, the even not dazzling effect of facula has been reached, and simultaneously, also can reduce the inconsistent phenomenon of photochromic, in addition, in follow-up use, this explosion-proof lamp still can be for the dual colour temperature light source use. The explosion-proof lamp has other technical effects of the lamp cap 10 provided by the above embodiments, and details are not repeated herein.

The present application is intended to cover various modifications, equivalent arrangements, and adaptations of the present application without departing from the spirit and scope of the present application.

Claims

1. A lamp cap, characterized in that: the LED lamp comprises a shell, a light source plate and a lens, wherein the lens is connected with the shell and encloses to form a light source cavity, and the light source plate is positioned in the light source cavity; the light source board comprises a substrate and a plurality of light-emitting pieces, the substrate is mounted on the shell, the light-emitting pieces are arranged on the surface, facing the lens, of the substrate, the light-emitting pieces are arranged along the circumferential direction of the substrate at intervals, and microstructures used for diverging light rays are arranged on the surface, facing the light-emitting pieces, of the lens.

2. The lamp cap of claim 1, wherein: the microstructure is an irregular microstructure.

3. The lamp cap of claim 1, wherein: the illuminating part comprises a plurality of lamp beads which are uniformly distributed on the substrate.

4. The lamp cap of claim 3, wherein: the lamp pearl divide into the multiunit, the multiunit the lamp pearl is followed the circumference interval distribution of base plate, in every group the lamp pearl is followed the radial direction of base plate sets up at interval in proper order.

5. The lamp cap according to any one of claims 1 to 4, wherein: the lens comprises a bottom plate and a ring wall arranged around the bottom plate in a surrounding mode, one end, back to the bottom plate, of the ring wall is connected with the shell, the substrate is located in the ring wall, and the microstructure is arranged on the bottom plate.

6. The lamp cap of claim 5, wherein: the bottom plate and the position, right opposite to each light-emitting piece, of the light-emitting piece are back to the light-emitting piece and sunken to form a containing cavity, the light-emitting piece is located in the containing cavity, and the microstructure is arranged on the bottom surface of the containing cavity, right opposite to the light-emitting piece.

7. The lamphead of claim 6, wherein: the bottom plate comprises a middle area tightly propped against the substrate and a plurality of light emitting areas distributed along the circumferential direction of the middle area, and each light emitting piece and each light emitting area are arranged in a one-to-one correspondence manner;

8. The lamp cap according to any one of claims 1 to 4, wherein: the lens is a PC lens.

9. The lamp cap according to any one of claims 1 to 4, wherein: the lamp holder further comprises an explosion-proof mask, and the explosion-proof mask is covered on the lens and connected with the shell.

10. An explosion-proof lamp characterized in that: the lamp cap comprises a driving device and the lamp cap as claimed in any one of claims 1 to 9, wherein the driving device is connected with the lamp cap and is used for driving the light-emitting piece to emit light.