Track bulb

Abstract

A track bulb is suitable for being detachably installed on a track. The rail has a plurality of rail portions and a plurality of conductors. The track bulb comprises a lampshade, a connector and a light-emitting unit. The lampshade is provided with an opening. The connector is fixed to the opening of the lampshade. The connector comprises a mounting seat unit, a control module and a plurality of conductive pins. The mount unit has an engagement seat. The joint seat is provided with two joint parts which are respectively used for being jointed with the two guide rail parts. And the conductive pins are electrically connected with the control module. Each conductive pin is used for being electrically connected with one of the conductors. The light-emitting unit is arranged on the lampshade or the control module and electrically connected to the control module. The track bulb is made into a one-piece lamp, and the effects of reducing the size and improving the structural strength are achieved.

Description

Technical Field

[0001] The present invention relates to a lighting device, and particularly to a track lamp bulb. Background Art

[0002] Referring to Figure 1 , a track lighting fixture 11 disclosed in the new patent publication No. M258235 of Taiwan, China, is installed on a track assembly 10. The track assembly 10 has a track 101 and two conductive strips 102 installed in the track 101. The track 101 has two engaging grooves 103 located on the inner side, and an elongated hole 104 communicating with the engaging grooves 103 and the outside. The track lighting fixture 11 includes an adapter 111 and a lamp base 112. The adapter 111 has a body 113, a shaft column 114 extending upward from the top surface of the body 113, two electrodes 115 respectively extending from two opposite sides of the shaft column 114, and two cards 116 respectively adjacent to the electrodes 115 (due to the angle, only one side of the electrode 115 and the card 116 can be seen in the figure). The lamp base 112 is connected to the body 113 of the adapter 111 by a flexible tube 117.

[0003] When installing the track lighting fixture 11 on the track assembly 10, first place the shaft column 114 into the elongated hole 104, and then rotate the track lighting fixture 11 by 90 degrees so that the cards 116 are respectively snapped into the engaging grooves 103 of the track assembly 10 to complete the combination. However, the track lighting fixture 11 has a large volume, which is not conducive to space allocation.

[0004] In addition, there is a kind of lighting adapter on the market. After screwing the lighting adapter to a bulb, it can be used as a track lamp. However, the combined lighting adapter and the bulb may not be screwed completely, resulting in problems such as poor structural strength or poor electrical conductivity. Summary of the Invention

[0005] The purpose of the present invention is to provide a track lamp bulb that can reduce the volume and improve the structural strength.

[0006] The track lamp bulb of the present invention is suitable for being detachably installed on a track. The track has a plurality of spaced-apart guide rail portions extending in a first direction, and a plurality of conductors extending in the first direction. The track lamp bulb includes a lamp shade, a connector, and a light-emitting unit.

[0007] The lampshade defines a light-emitting space, and the lampshade has an opening. The connector is fixed to the opening of the lampshade, and the connector can be movably mounted on the track. The connector includes a mounting seat unit, a control module, and a plurality of conductive pins. The mounting seat unit is used to fix the lampshade and has a mounting seat that defines a light-emitting chamber, and a coupling seat extending from the mounting seat in a direction away from the lampshade. The coupling seat has two coupling portions that are spaced opposite to each other and are respectively used to couple the two guide rail portions. The control module is mounted on the mounting seat. The conductive pins are mounted on the mounting seat unit and are electrically connected to the control module. Each of the conductive pins passes through the coupling seat and is used to electrically connect one of the conductors. The light-emitting unit is arranged on the lampshade or the control module, and the light-emitting unit is electrically connected to the control module and is used to emit light.

[0008] In the track light bulb of the present invention, the joint is fixed to the lampshade by adhesive, and the adhesive has the characteristics of heat dissipation and electrical insulation, and also covers at least a part of the control module.

[0009] The track light bulb of the present invention, the light-emitting unit comprises a plurality of light-emitting bar groups electrically connected to the control module, and each of the light-emitting bar groups has at least one light-emitting body.

[0010] The track light bulb of the present invention, the control module has two contacts respectively electrically connected to the two conductive pins, wherein the positive pole of one of the light strip groups is connected to the negative pole of the other light strip group, and the negative pole of one of the light strip groups and the positive pole of the other light strip group are respectively fixed at the contacts, and the light strip group is an LED.

[0011] The track light bulb of the present invention, each of the light strip groups comprises a plurality of spaced light strips, a first connecting piece and a second connecting piece, the first connecting piece is integrally connected to one end of the light strip, the second connecting piece is integrally connected to the other end of the light strip, and each of the light strips is formed with the light-emitting body.

[0012] The track light bulb of the present invention, the control module comprises a control board for electrically connecting the conductive pins, and an adapter board electrically connected to the control board, and one end of the light strip group is electrically connected to the adapter board.

[0013] The track light bulb of the present invention defines a reference line passing through the joint part. When the reference line is parallel to the first direction, the joint part can be placed in the track. When the reference line is perpendicular to the first direction, the joint part can be joined to the guide rail part and installed on the track.

[0014] The track light bulb of the present invention has two conductive pins extending through the joint portion respectively.

[0015] For the track lamp of the present invention, the conductive pin and the engaging portion are spaced apart in the height direction perpendicular to the first direction.

[0016] For the track lamp of the present invention, the engaging seat further has a cylindrical body portion extending from the mounting seat, the engaging portions are formed on two opposite sides of the cylindrical body portion, and the connector further includes a metal pin passing through the cylindrical body portion.

[0017] For the track lamp of the present invention, the light-emitting unit includes an LED module fixed to the control module and a kit wound around the LED module. The LED module is a surface-mounted component, and the kit isolates the adhesive outside the LED module.

[0018] For the track lamp of the present invention, the light-emitting unit includes an LED module fixed to the control module and a kit wound around the LED module. The LED module is an SMD or COB. The top end of the kit extends into the light-emitting space, and the lampshade is transparent.

[0019] For the track lamp of the present invention, the lampshade has an explosion-proof layer formed on the inner side.

[0020] For the track lamp of the present invention, a non-conductive heat-dissipating glue is installed in the mounting seat, and the heat-dissipating glue contacts the inner surface of the mounting seat.

[0021] The beneficial effect of the present invention is that: the control module is installed in the mounting seat of the connector, and then the connector is fixed to the lampshade to form a one-piece lamp. Therefore, the present invention can be directly installed on the track for use without a adapter, and has the effects of reducing the volume and improving the structural strength. Description of the Drawings

[0022] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, where:

[0023] Figure 1 is a partial cross-sectional exploded view of the track lamp disclosed in the Taiwan, China New Patent Publication No. M258235;

[0024] Figure 2 is an incomplete three-dimensional exploded view of the first embodiment of the track lamp of the present invention installed on a track;

[0025] Figure 3 is Figure 2 partial cross-sectional schematic view;

[0026] Figure 4 is a partial cross-sectional schematic view of the first embodiment installed in the track;

[0027] Figure 5 is a partial cross-sectional view of the first embodiment and the track;

[0028] Figure 6 is an exploded perspective view of the first embodiment;

[0029] Figure 7 is an exploded perspective view, showing a light-emitting unit and a control module of the first embodiment viewed from another angle;

[0030] Figure 8 is an installation schematic diagram of the first embodiment installed in the track;

[0031] Figure 9 is a cross-sectional view of the second embodiment of the present invention;

[0032] Figure 10 is a cross-sectional view of the third embodiment of the present invention;

[0033] Figure 11 is a partial cross-sectional schematic diagram of the fourth embodiment of the present invention installed in another track;

[0034] Figure 12 is a partial cross-sectional schematic diagram of the fifth embodiment of the present invention installed in another track. Detailed Description of the Embodiments

[0035] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

[0036] Referring to Figures 2 to 4 , a first embodiment of the track lamp 200 of the present invention is applicable to be detachably installed on a track 9. The track 9 includes a guide groove 91 extending along a first direction X, and a plurality of conductors 92 installed in the guide groove 91 and extending along the first direction X. The guide groove 91 has an opening 911 communicating with the outside, and a plurality of spaced-apart guide rail portions 912 extending along the first direction X. The guide rail portions 912 are grooves and are spatially connected to the opening 911. The track 9 of this first embodiment is a three-wire type and has three conductors 92 and three guide rail portions 912, and the conductors 92 are respectively fixed in the guide rail portions 912.

[0037] Referring to Figure 3 , Figure 5 and Figure 6, the track lamp 200 includes a lamp cover 2, a connector 3, and a light-emitting unit 4. The lamp cover 2 defines a light-emitting space 20, and the inside of the light-emitting space 20 is air. The lamp cover 2 has a circular opening 21 located on the top side and spatially connected to the light-emitting space 20. Further, the lamp cover 2 is a spherical transparent glass cover and also has an explosion-proof layer 22 formed on the inner side, which can prevent the glass from splashing when the lamp cover 2 breaks, so the safety factor is high and the safety can be improved. The bottom end of the lamp cover 2 is closed, but it can also be open.

[0038] The connector 3 is fixedly adhered to the opening 21 of the lamp cover 2 with an adhesive 5. The adhesive 5 has an adhesive effect. Further, it can also have the characteristics of heat dissipation and electrical insulation. The adhesive 5 can completely fill or partially fill the opening 21. The connector 3 and the lamp cover 2 can also be fixed by ultrasonic welding, riveting, screwing or other joining methods, without using the adhesive 5 for adhesion.

[0039] The connector 3 is movably mounted on the track 9 and includes a mounting seat unit 301, a control module 302, two conductive pins 303 and a metal pin 304. The mounting seat unit 301 is for the lamp cover 2 to be fixed with the adhesive 5 and has a mounting seat 31 that defines a receiving chamber 30 around it, and a joining seat 32 extending from the mounting seat 31 away from the lamp cover 2. The mounting seat 31 is cylindrical and has a housing 311 and a cover plate 312 elastically arranged in the housing 311. The housing 311 has an opening 313 spatially connected to the receiving chamber 30, a ring groove 314 that surrounds the whole circumference and is adjacent to the opening 313, and two slots 315 that are spatially connected to the receiving chamber 30 and the outside and are away from the opening 313. The housing 311 of this first embodiment is composed of two semi-circular plastic cylinders. The shape and size of the opening 313 are configured to accommodate the opening 21 of the lamp cover 2.

[0040] Refer to Figure 2 and Figure 6 , the cover plate 312 is pushably arranged in the housing 311 along a height direction Z perpendicular to the first direction X. In the case where no external force acts on the cover plate 312, the bottom surface of the cover plate 312 is elastically pushed by a spring 316 and its top will protrude from the top surface of the mounting seat 31. When the cover plate 312 is pushed by an external force until its top is flush with the top surface of the mounting seat 31, the cover plate 312 will squeeze the spring 316 and cause the spring 316 to accumulate an elastic restoring force to push back the cover plate 312.

[0041] Refer to Figures 3 to 5, the joint seat 32 has a cylindrical portion 321 extending from the mounting seat 31 and having a diameter smaller than that of the mounting seat 31, and two engaging portions 322 spaced apart and formed on two opposite sides of the cylindrical portion 321. The engaging portions 322 are bumps and are used to engage two of the guide rail portions 912. The joint seat 32 also has two axially symmetric terminal through slots 323. Each of the terminal through slots 323 is L-shaped and extends upward from the bottom side of the cylindrical portion 321 and passes through one of the engaging portions 322, and each of the terminal through slots 323 is spatially communicated with the chamber 30 and the outside. The maximum width of each of the engaging portions 322 is slightly smaller than the opening portion 911 of the track 9. The length from one of the engaging portions 322 to the other engaging portion 322 is greater than the opening portion 911 of the track 9.

[0042] Refer to Figures 5 to 7 , the control module 302 is installed on the mounting seat unit 301. The adhesive 5 covers the entire control module 302. In some embodiments, the adhesive 5 partially covers the control module 302. The control module 302 includes a control board 33 installed in the annular groove 314 of the mounting seat 31, and an adapter board 34 electrically connected to the control board 33. The control board 33 is located in the chamber 30 and has a circuit board body 331 and a plug-in 332 inserted in the circuit board body 331. The plug-in 332 has two conductive posts 333 extending vertically and electrically connected to the circuit board body 331. The adapter board 34 has two jacks 341 respectively for the conductive posts 333 to be inserted and fixed, and two contacts 342. Each of the contacts 342 in this first embodiment is a conductive fixing clip. In other variations, each of the contacts 342 can also be a metal pad such as a copper pad or a silver pad. The control module 302 is located in the mounting seat 31. In some embodiments, the control module 302 protrudes from the mounting seat 31.

[0043] Refer to Figure 3 , Figure 5 and Figure 6, the conductive pins 303 are installed on the mounting base unit 301 and electrically connected to the control module 302. Each of the conductive pins 303 has a fixed end 351 welded to the control board 33, and a pin end 352 passing through the joint portion 322 from one of the terminal slots 323. The conductive pin 303 is welded to the control board 33 through the fixed end 351 and is electrically connected to the contact point 342. The pin end 352 of each of the conductive pins 303 is used to directly contact and electrically connect one of the conductors 92 of the track 9. The metal pin 304 is installed on the joint seat 32 and passes out through the cylindrical portion 321 and is used to directly contact the other conductor 92 of the track 9. The metal pin 304 of this first embodiment is not electrically connected to the control module 302, but in other variations, the metal pin 304 can be electrically connected to the control module 302 to have a grounding function.

[0044] Furthermore, a non-conductive heat dissipation gel 6 is also installed in the mounting base 31. In some embodiments, the heat dissipation gel 6 fills the entire internal space of the mounting base 31 and contacts the inner surface of the mounting base 31. In some embodiments, the heat dissipation gel 6 is partially filled in the mounting base 31 and at least covers a part of the bottom surface of the control board 33.

[0045] Refer to Figures 5 to 7 , the light-emitting unit 4 is disposed in the lamp shade 2 and electrically connected to the control module 302 and used for emitting light. The light-emitting unit 4 of this first embodiment is an LED filament strip and includes two light-emitting strip groups 41 (LEDs in this embodiment) electrically connected to the control module 302 and located in the light-emitting space 20 of the lamp shade 2. Each of the light-emitting strip groups 41 has a plurality of spaced-apart light-emitting strips 411, a first connecting piece 412, and a second connecting piece 413. Each of the light-emitting strips 411 has a strip-shaped light-emitting body 414, and a first end 415 and a second end 416 respectively extending from two opposite ends of the light-emitting body 414. Each of the first ends 415 is a positive electrode, and each of the second ends 416 is a negative electrode. The first connecting piece 412 is integrally connected to the first end 415 of the light-emitting strip 411. Specifically, the first connecting piece 412 and the first end 415 of the light-emitting strip 411 are formed by processing the same metal sheet. The second connecting piece 413 is integrally connected to the second end 416 of the light-emitting strip 411. Specifically, the second connecting piece 413 and the second end 416 of the light-emitting strip 411 are formed by processing the same metal sheet.

[0046] The first connecting piece 412 of one of the light-emitting strip groups 41 is fixedly connected to the second connecting piece 413 of the other light-emitting strip group 41 by welding. That is to say, the positive electrode and the negative electrode of the light-emitting strip group 41 are connected in series. The second connecting piece 413 of one of the light-emitting strip groups 41 and the first connecting piece 412 of the other light-emitting strip group 41 are respectively inserted into the contact point 342 of the adapter board 34 to be electrically connected to the adapter board 34. In addition, strengthening fixation can also be achieved by welding at the contact point 342.

[0047] When the conductive pin 303 is energized, it will cause the light-emitting body 414 of the light-emitting strip group 41 to emit light, thus having an illuminating effect.

[0048] In some embodiments, the light-emitting unit 4 is a halogen lamp.

[0049] In some embodiments, the control module 302 omits the adapter board 34 and changes the conductive post 333 of the plug-in 332 into a slot, and the light-emitting strip group 41 is directly inserted into the plug-in 332.

[0050] In the present invention, the control module 302 is installed on the mounting seat 31 of the connector 3, and then the connector 3 is fixed to the lamp shade 2. The track lamp 200 is made into a one-piece lamp. Therefore, it can be directly installed on the track 9 without a conversion head for connection, thus having the effects of reducing the volume of the track lamp 200 and improving its structural strength. In addition, in this first embodiment, the adhesive 5 can also conduct heat generated by the control module 302 and the light-emitting unit 4 to the mounting seat 31, the lamp shade 2, and the conductive pin 303 due to its heat dissipation and electrical insulation characteristics, and then the heat is dissipated to the outside by the mounting seat 31, the lamp shade 2, and the conductive pin 303. Therefore, the light-emitting space 20 of the lamp shade 2 does not need to be filled with gas for heat dissipation, and the working temperature can also be controlled within a safe range.

[0051] It should be noted that since the control board 33 and the adapter board 34 in this first embodiment are separate and independent components, during production, the adapter board 34 and the control board 33 can be assembled with each other first, and then the control board 33 is installed in the annular groove 314 of the mounting seat 31. Then, the light-emitting strip group 41 is fixedly welded to the adapter board 34 to complete the assembly of the light-emitting unit 4 and the control module 302. Therefore, the process of this first embodiment is simple and can improve the production yield.

[0052] Refer to Figure 8 , the following describes the method of installing this first embodiment on the track 9:

[0053] Define a reference line BL passing through the joint 322. Place the track bulb 200 in such a way that the reference line BL is parallel to the first direction X, and insert the joint 322 into the track 9 through the opening 911. Then, rotate the track bulb 200 until the reference line BL is perpendicular to the first direction X (i.e., rotate 90 degrees). The joint 322 can be engaged with the guide rail portion 912 to be installed in the track 9, and the conductive pins 303 are respectively in contact with the conductors 92 for electrical conduction. Pass an electric current through the conductors 92 of the track 9, and the track bulb 200 can be powered on to emit light. At this time, a part of the cover plate 312 will enter the guide groove 91 to limit the rotation of the track bulb 200, thereby achieving positioning.

[0054] If you want to remove the track bulb 200 from the track 9, just push the cover plate 312 until its top is flush with the top surface of the mounting base 31 and withdraw from the guide groove 91, and then it can be rotated again to be detached.

[0055] Refer to Figure 9 , the second embodiment of the present invention is similar to the first embodiment, and the difference is that:

[0056] The lamp shade 2 is a white plastic lamp housing, and the explosion-proof layer 22 is omitted.

[0057] The control module 302 omits the adapter board 34 and the plug-in 332 (see Figure 6 ).

[0058] The light-emitting unit 4 is disposed on the control module 302, and includes an LED module 42 welded and fixed to the control module 302, and a kit 43 wound around the LED module 42. The LED module 42 can be a surface-mounted device SMD or COB (chip on board). The kit 43 is a circular collar that isolates the adhesive 5 outside the LED module 42. When the LED module 42 emits light, the light-emitting space 20 will be illuminated. Since the lamp shade 2 is a white plastic lamp housing, the light of this second embodiment is softer and can be used as a decorative lamp in addition to lighting.

[0059] Refer to Figure 10 , the third embodiment of the present invention is similar to the second embodiment, and the difference is that:

[0060] The lamp shade 2 is made of transparent glass.

[0061] There is no heat dissipation glue 6 in the mounting base 31 (see Figure 9 ).

[0062] The kit 43 is a solid cylinder made of transparent acrylics, and there is a space at its top for accommodating the LED module 42. The solid part of the kit 43 extends into the light-emitting space 20 to play a light-guiding role.

[0063] When the LED module 42 emits light, the light is introduced into the kit 43. Therefore, when viewed from the outside of the lamp shade 2 towards the inside, the kit 43 appears highly bright, having a visual effect similar to that of a tungsten filament lamp.

[0064] In some variations, the lighting unit 4 omits the kit 43, and the lamp shade 2 is made in the form of a solid column similar to the kit 43. At this time, the light-emitting space 20 is solid and there is no air.

[0065] Refer to Figure 11 , the fourth embodiment of the present invention is similar to the first embodiment, and the differences are as follows:

[0066] The track lamp 200 is used on a four-wire type track 9. The track 9 has four of the conductors 92 and four of the guide rail parts 912.

[0067] The lamp shade 2 is a pear-shaped lamp housing.

[0068] The conductive pins 303 of the connector 3 have four. The conductive pins 303 are respectively used for electrically connecting the conductors 92.

[0069] Refer to Figure 12 , the fifth embodiment of the present invention is similar to the first embodiment, and the differences are as follows:

[0070] The track lamp 200 is used on a two-wire type track 9. The track 9 has two of the conductors 92 and two of the guide rail parts 912. The conductors 92 and the guide rail parts 912 are spaced apart in the height direction Z.

[0071] The lamp shade 2 is a sky lantern-shaped lamp housing.

[0072] The track lamp 200 omits the metal pins 304 (see Figure 3 ). The conductive pins 303 and the engaging parts 322 are spaced apart in the height direction Z. The conductive pins 303 are respectively used for electrically connecting the conductors 92. The engaging parts 322 are respectively used for engaging the guide rail parts 912.

[0073] As can be seen from the foregoing embodiments, the track lamp 200 of the present invention determines the number of the conductive pins 303 and the metal pins 304, as well as the setting positions of the engaging parts 322 according to the type of the track 9.

[0074] The track lamp 200 of the present invention installs the control module 302 on the mounting base 31 of the connector 3, and then fixes the connector 3 to the lamp shade 2 to form a one-piece lamp, which can be directly installed on the track 9 without using an adapter, so it has the effects of reducing the volume and improving the structural strength. When the connector 3 and the lamp shade 2 are fixed by using the adhesive 5, the control module 302 and the light emitting unit 4 dissipate heat by using the adhesive 5. The lamp shade 2 can also be made transparent, translucent, opaque, or in various shapes for application in various occasions, with good applicability.

[0075] The above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention still fall within the scope of the present invention.

Claims

1. A track light bulb, suitable for being detachably mounted on a track, the track having a plurality of rail portions spaced apart and extending along a first direction, and a plurality of conductors extending along the first direction, characterized in that: The track light bulb comprises: A lampshade, surrounding and defining a light-emitting space, wherein the lampshade has an opening; A joint is fixed to the opening of the lampshade, and the joint can be movably mounted on the track, and the joint includes: The mounting seat unit is used to fix the lampshade and has a mounting seat surrounding and defining the accommodation chamber, and a coupling seat extending from the mounting seat toward a direction away from the lampshade, wherein the coupling seat has two coupling portions spaced opposite to each other and respectively used to couple the two guide rail portions. A control module mounted on the mounting base, and A plurality of conductive pins mounted on the mounting base unit and electrically connected to the control module, each of the conductive pins passing through the joint base and used to electrically connect to one of the conductors; and The light emitting unit is arranged on the lampshade or the control module, and the light emitting unit is electrically connected to the control module and is used for emitting light.

2. The track light bulb according to claim 1, characterized in that: The connector is fixed to the lampshade by adhesive, and the adhesive has the characteristics of heat dissipation and electrical insulation, and also covers at least a part of the control module.

3. The track light bulb according to claim 1, characterized in that: The light-emitting unit includes a plurality of light-emitting bar groups electrically connected to the control module, and each of the light-emitting bar groups has at least one light-emitting body.

4. The track light bulb according to claim 3, characterized in that: The control module has two contacts electrically connected to the two conductive pins respectively, wherein the positive pole of one of the light-emitting bar groups is connected to the negative pole of the other light-emitting bar group, and the negative pole of one of the light-emitting bar groups and the positive pole of the other light-emitting bar group are fixed to the contacts respectively, and the light-emitting bar group is an LED.

5. The track light bulb according to claim 3, characterized in that: Each of the light-emitting bar groups has a plurality of spaced light-emitting bars, a first connecting piece and a second connecting piece, wherein the first connecting piece is integrally connected to one end of the light-emitting bar, and the second connecting piece is integrally connected to the other end of the light-emitting bar, and each of the light-emitting bars is formed with the light-emitting body.

6. The track light bulb according to claim 3, characterized in that: The control module includes a control board for electrically connecting the conductive pins, and an adapter board electrically connected to the control board, and one end of the light strip group is electrically connected to the adapter board.

7. The track light bulb according to claim 1, characterized in that: A reference line passing through the joint is defined. When the reference line is parallel to the first direction, the joint can be placed in the track. When the reference line is perpendicular to the first direction, the joint can be joined to the guide rail and installed on the track.

8. The track light bulb according to claim 1, characterized in that: The two conductive pins respectively pass through the joint portion.

9. The track light bulb according to claim 1, characterized in that: The conductive pin and the joint portion are spaced apart in a height direction perpendicular to the first direction.

10. The track light bulb according to claim 1, characterized in that: The engaging seat also has a cylindrical portion extending from the mounting seat, the engaging portion is formed on two opposite sides of the cylindrical portion, and the joint also includes a metal pin extending from the cylindrical portion.

11. The track light bulb according to claim 2, characterized in that: The light-emitting unit includes an LED module fixed to the control module and a kit wrapped around the LED module. The LED module is a surface adhesive component, and the kit isolates the adhesive outside the LED module.

12. The track light bulb according to claim 1, characterized in that: The light-emitting unit comprises an LED module fixed to the control module, and a kit wrapped around the LED module. The LED module is SMD or COB. The top of the kit extends into the light-emitting space, and the lampshade is transparent.

13. The track light bulb according to claim 1, characterized in that: The lampshade has an explosion-proof layer formed on the inner side.

14. The track light bulb according to claim 1, characterized in that: The mounting seat is filled with non-conductive heat dissipation adhesive, and the heat dissipation adhesive contacts the inner surface of the mounting seat.

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