CN210601106U

CN210601106U - Ball bulb lamp

Info

Publication number: CN210601106U
Application number: CN201921296550.7U
Authority: CN
Inventors: 曹亮亮; 黄雨欣; 陈富杰
Original assignee: Xiamen Eco Lighting Co Ltd
Current assignee: Xiamen Eco Lighting Co Ltd; Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-22
Anticipated expiration: 2029-08-12

Abstract

The utility model belongs to the technical field of the illumination lamps and lanterns, especially, relate to a ball bubble lamp, the ball bubble lamp includes: a lamp cap; the heat dissipation part is detachably connected to the lamp holder and is surrounded to form an accommodating cavity; a bulb case connected with the heat sink; the driving plate and the light source plate are arranged in the accommodating cavity, the light source plate is electrically connected with the driving plate, the driving plate is provided with a plurality of adjusting switches with a plurality of gears, and each adjusting switch is provided with a gear button; the adjusting button is movably arranged on the heat dissipation piece and connected with the gear button, the adjusting button is exposed out of the heat dissipation piece, and the adjusting button is opposite to the heat dissipation piece and can drive the gear button to move so as to realize adjustment of color temperature when the heat dissipation piece moves. The utility model provides a can drive the gear button when stirring adjustment button and remove, and then switch over the gear, switch on different drive circuit, realize the regulation to the colour temperature, overall structure is simple, low in manufacturing cost, and colour temperature adjusts convenient operation, compares in other control modes, and its colour temperature adjusts the operation more simply directly perceived.

Description

Ball bulb lamp

Technical Field

The utility model belongs to the technical field of the illumination lamps and lanterns, especially, relate to a ball bubble lamp.

Background

The existing bulb lamp with adjustable color temperature is mainly intelligently controlled by a wall or a control panel or other modes, the control mode of the wall control is complex, the required color can be obtained by switching on and off for many times, the intelligent control is more convenient, but the manufacturing cost is high, the price is high, and the requirements of most consumers cannot be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball bubble lamp aims at solving the ball bubble lamp that has the colour temperature regulatory function among the prior art and controls comparatively complicated, the higher technical problem of manufacturing cost.

In order to achieve the above object, the utility model adopts the following technical scheme: a bulb lamp comprising:

a lamp cap;

the heat dissipation part is detachably connected to the lamp holder and is surrounded to form an accommodating cavity;

the bulb shell is connected with the heat radiating piece;

the driving board and the light source board are arranged in the accommodating cavity, the light source board is electrically connected with the driving board, the driving board is provided with a multi-gear adjusting switch, and the adjusting switch is provided with a gear button for switching among gears;

the adjusting button is movably arranged on the heat dissipation piece and connected with the gear button, the adjusting button is exposed out of the heat dissipation piece, and the heat dissipation piece moves relative to the adjusting button and drives the gear button to move so as to adjust the color temperature.

Furthermore, the heat dissipation piece corresponds the position of regulating switch has seted up the through-hole, the lateral wall of heat dissipation piece sunken be formed with the spout of through-hole intercommunication, adjustment button includes connecting portion and presses the splenium, connecting portion pass the through-hole with the gear button is connected, press the splenium to slide set up in the spout, press the splenium to be in can pass through when sliding in the spout connecting portion drive the gear button removes.

Furthermore, the radiating piece is provided with clamping grooves symmetrically on the inner side wall close to one end of the lamp cap, and the two sides of one end of the driving board are adaptive to and clamped in the corresponding clamping grooves.

Furthermore, the two sides of one end of the driving board are respectively provided with a supporting part, one end, close to the lamp holder, of the heat dissipation piece is provided with a supporting platform, the supporting parts on the two sides of the driving board are supported on the supporting platform when the light source board is clamped on the heat dissipation piece, and therefore the driving board is compressed on the heat dissipation piece.

Further, the light source board is provided with a female terminal, one side of the driving board close to the top is provided with a male terminal matched with the female terminal, and the male terminal is connected with the female terminal in an inserting mode so as to achieve electric connection between the light source board and the driving board.

Furthermore, a clamping hole with a rectangular cross section is formed in the middle of the light source plate, the whole female terminal is of a convex structure with a large upper part and a small lower part, and the smaller end of the female terminal is inserted into the clamping hole in a matched mode.

Furthermore, the driving board is perpendicular to the light source board, the bottom surface of the larger end of the female terminal is abutted to the top surface of the light source board, and the light source board compresses the driving board onto the heat dissipation member through the female terminal.

Furthermore, the heat dissipation piece comprises an injection molding outer shell and a metal inner shell, the metal inner shell is fixedly embedded in the injection molding outer shell, one end of the injection molding outer shell is clamped or connected in a threaded mode and fixed in the lamp cap, mutually matched buckle structures are arranged between the injection molding outer shell and the lamp bulb shell, and the lamp bulb shell is assembled and fixed on the injection molding outer shell through the buckle structures.

Furthermore, the inner side wall of the metal inner shell, which is close to one end of the bulb shell, is recessed outwards to form an annular step, the light source plate is a circular plate, the bottom surface of the light source plate abuts against the bottom surface of the annular step, and the circumferential side wall of the light source plate abuts against the side surface of the annular step.

Further, the inner wall of the injection molding shell is close to one end of the bulb shell and is provided with a plurality of convex ribs at intervals in the circumferential direction, the inner wall of the injection molding shell is close to one end of the bulb shell and is abutted against the step, and the light source plate is clamped and connected to the convex ribs and is abutted between the steps.

The utility model has the advantages that: the utility model discloses a ball bubble lamp, the adjustment button activity sets up on the radiating piece, and adjustment button is connected with the gear button on the regulating switch, can drive the gear button when stirring adjustment button and remove, and then switches over the gear, switches on different drive circuit, realizes the regulation to the colour temperature, and overall structure is simple, low in manufacturing cost, and convenient operation is adjusted to the colour temperature, compares in other control modes, and its colour temperature is adjusted the operation and is more simple directly perceived.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic perspective view of a bulb lamp provided in an embodiment of the present invention;

FIG. 2 is a schematic side view of the bulb lamp of FIG. 1;

FIG. 3 is an exploded view of the bulb lamp of FIG. 1;

FIG. 4 is a longitudinal cross-sectional view of the bulb lamp of FIG. 1;

FIG. 5 is a schematic structural view of an adjustment button of the bulb lamp shown in FIG. 3;

FIG. 6 is a schematic structural view of a light source plate in the bulb lamp shown in FIG. 3;

fig. 7 is a schematic structural view of a heat dissipation element in the bulb lamp shown in fig. 3;

fig. 8 is a schematic structural diagram of a driving board in the bulb lamp shown in fig. 3;

FIG. 9 is a schematic side view of the bulb lamp of FIG. 1;

FIG. 10 is a schematic view of a portion of the bulb of FIG. 1;

fig. 11 is a schematic partial exploded view of the bulb lamp of fig. 1;

FIG. 12 is a schematic view of the assembly of the driving board and the light source board in the bulb lamp of FIG. 3;

fig. 13 is a schematic structural view of a female terminal in the bulb lamp shown in fig. 3.

Wherein, in the figures, the respective reference numerals:

10-a lamp cap; 20-a heat sink; 30-a bulb shell; 40-a drive plate; 50-a light source board; 60-drawing pins; 201-a receiving cavity; 202-a through hole; 203-a chute; 210-an adjustment button; 211-a pressing part; 212-a connecting portion; 213-a fixture block; 214-slot; 220-injection molding the housing; 230-a metal inner shell; 221-convex strips; 222-a clamping groove; 223-abutting table; 224-notch; 225-convex ribs; 226-against step; 231-an annular step; 410-an adjustment switch; 411-gear shift knob; 420-male terminal; 421-inserting needle; 430-an abutment; 501-clamping hole; 51-female terminal; 510-a conductive jack; 510-red light chip; 520-green chip; 530-blue light chip; 540-low color temperature white light chip; 550-high color temperature white light chip.

Detailed Description

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

In the description of the present invention, 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 indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

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 invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 invention can be understood according to specific situations by those skilled in the art.

As shown in FIGS. 1-4, the embodiment of the utility model provides a bulb lamp, including lamp holder 10, heat dissipation piece 20, bulb shell 30, drive plate 40 and light source board 50. The lamp cap 10 and the heat sink 20 are detachably connected, for example, by using a screw, and the bottom of the lamp cap 10 is screwed with a drawing pin 60. The bulb shell 30 is connected to the heat sink 20, and if the bulb shell is detachably connected, the heat sink 20 is surrounded by a receiving cavity 201. The driving board 40 and the light source board 50 are arranged in the accommodating cavity 201, and the surface of the light source board 50 provided with the luminous body is the surface far away from the lamp holder 10; the light source board 50 is electrically connected to the driving board 40, and as shown in fig. 4, the driving board 40 is provided with a multi-stage adjustment switch 410, such as a dial switch, and the adjustment switch 410 has a stage button 411 for switching between stages. As shown in fig. 1 and 2, the adjusting button 210 is movably disposed on the heat sink 20, the adjusting button 210 is connected to the gear button 411, the adjusting button 210 is exposed out of the heat sink 20, and the adjusting button 210 can drive the gear button 411 to move when moving relative to the heat sink 20, thereby adjusting the color temperature. That is to say, the driving board 40 is provided with a plurality of driving circuits, and the gear button 411 is correspondingly communicated with at least one of the circuits when located at different positions, and the gear can be switched by shifting the adjusting button 210, thereby realizing the adjustment of the color temperature.

The ball bubble lamp that this embodiment provided, adjustment button 210 activity sets up on heat-dissipating piece 20, and adjustment button 210 is connected with gear button 411 on the regulating switch 410, can drive gear button 411 and remove when stirring adjustment button 210, and then switches over the gear, switches on different drive circuit, realizes the regulation to the colour temperature, and overall structure is simple, low in manufacturing cost, and colour temperature adjusts convenient operation, compares in other control methods, and its colour temperature adjusts the operation more simply directly perceived.

The heat sink 20 may be an aluminum piece or other metal pieces with good heat dissipation performance, or may be a plastic-clad aluminum structure, that is, an injection molded piece is coated outside the aluminum piece, which is beneficial to heat dissipation.

As shown in fig. 3 and 6, the top surface of the light source board 50 is provided with a plurality of light emitting chips, the plurality of light emitting chips can at least form three color temperatures, that is, at least include a red light chip 510, a green light chip 520 and a blue light chip 530, the bulb lamp can emit full color, the plurality of light emitting chips can be arranged on the top surface of the light source board 50 in an annular array, for example, the plurality of light emitting chips form a plurality of concentric circles using the center of the top surface of the light source board 50 as the center of the circle. In one embodiment, the top surface of the light source plate 50 is provided with two circles of light emitting chips, one circle on the inner side includes red chips 510, green chips 520, and blue chips 530 which are alternately arranged, one circle on the outer side includes low color temperature white chips 540 and high color temperature white chips 550 which are alternately arranged, the color temperature value of the high color temperature white chips 550 is greater than that of the low color temperature white chips 540, for example, the color temperature value of the low color temperature white light chip 540 is 2700K to 2900K, the color temperature value of the high color temperature white light chip 550 is 5000K to 8000K, the two color temperature white light chips are connected in series and in parallel, when the two white light chips emit light, white light of 2700K-6000K can be mixed out, correspondingly, the adjusting switch 410 of the driving board 40 is divided into six shift controls, which are red light, green light, blue light, white light with low color temperature, white light with high color temperature, and mixed white light, so that the bulb can meet more scene requirements. The light emitting chips are circumferentially arranged to increase the light emitting angle of the bulb lamp, and can be suitable for use in a larger space, and it can be understood that the light emitting chips on the top surface of the light source board 50 may have other colors or color temperatures, and the arrangement mode, the color temperature values of the high-low color temperature white light chips, and the light emitting control mode may not be limited to the above modes.

In an embodiment, as shown in fig. 2 to 4, a through hole 202 is formed in the heat sink 20 at a position corresponding to the adjusting switch 410, a sliding groove 203 is formed in a concave portion of an outer side wall of the heat sink 20, and the sliding groove 203 is communicated with the through hole 202. The adjustment button 210 includes a pressing portion 211 and a connecting portion 212, the connecting portion 212 and the pressing portion 211 can be integrally formed, the connecting portion 212 penetrates through the through hole 202 to be connected with a gear button 411 of the adjustment switch 410, the pressing portion 211 is slidably disposed in the sliding slot 203, and the pressing portion 211 can drive the gear button 411 to move to different gears through the connecting portion 212 when sliding in the sliding slot 203. The length of connecting portion 212 is less than the length of through-hole 202, and the length of pressing the portion 211 is less than the length of spout 203, presses the width adaptation of portion 211 in the width of spout 203, and the surface of pressing the portion 211 can be equipped with anti-skidding structure, for example tooth's socket, sand grip, bump to adjust button 210's stirring operation.

As shown in fig. 4 and 5, the connecting portion 212 of the adjusting button 210 may include a plurality of latches 213 fixed on an inner sidewall of the pressing portion 211, and the plurality of latches 213 form an insertion slot 214 for the adjusting switch 410 to be inserted and fixed. Two or more latch blocks 213 opposite to each other of the plurality of latch blocks 213 elastically grip one end of the shift knob 411, for example, four latch blocks 213 may be disposed on the inner sidewall of the pressing portion 211, and each latch block 213 forms an elastic claw for elastically gripping the shift knob 411.

In an embodiment, as shown in fig. 7 and 8, the heat sink 20 is symmetrically provided with clamping grooves 222 on the inner wall near one end of the lamp cap 10, and both sides of one end of the driving board 40 are adapted to be clamped in the corresponding clamping grooves 222. The removable connection between the drive plate 40 and the heat sink 20 is achieved using a snap-fit arrangement.

Four convex strips 221 are formed on the inner wall of the heat sink 20, and a clamping groove 222 is formed between two adjacent convex strips 221. That is, the inner wall of the heat dissipating member 20 has two sets of protruding strips 221, each set includes two spaced protruding strips 221, the two protruding strips 221 form a clamping groove 222, the inner wall of the heat dissipating member 20 forms two opposite clamping grooves 222, and two sides of one end of the driving board 40 are respectively clamped in the clamping grooves 222 on two sides.

The heat sink 20 and the lamp bulb 30 are provided with a mutually-matched snap structure therebetween, and the two are assembled and fixed through the snap structure, for example, the bottom of the lamp bulb 30 and the inner side wall of the top of the heat sink 20 are provided with a matched snap structure therebetween to achieve assembly. The bulb shell 30 is a semi-bulb shell structure with an opening at the bottom and can be made of transparent or semitransparent insulating materials; the heat sink 20 has a hollow structure with openings at the upper and lower ends.

In one embodiment, as shown in fig. 4, 7 and 9, the heat sink 20 includes an injection molded outer shell 220 and a metal inner shell 230, and the metal inner shell 230 is embedded in the injection molded outer shell 220, i.e. the heat sink 20 is made of plastic-clad aluminum. One end of the injection molding shell 220 is clamped or screwed in the lamp cap 10, a mutually matched clamping structure is arranged between the injection molding shell 220 and the lamp bulb shell 30, and the lamp bulb shell 30 is assembled and fixed on the injection molding shell 220 through the clamping structure.

As shown in fig. 4 and 9, a plurality of ribs 225 may be circumferentially disposed at intervals at one end of the inner wall of the heat sink 20 close to the bulb casing 30, an abutting step 226 is formed at one end of the inner wall of the heat sink 20 close to the bulb casing 30, and the light source plate 50 is fittingly engaged between the ribs 225 and the abutting step 226. For example, the inner wall of the heat sink 20 is circumferentially and uniformly provided with three ribs 225 at intervals, the light source plate 50 is clamped between the ribs 225 and the abutting steps 226, the ribs 225 and the abutting steps 226 form a clamping groove for elastically clamping the lamp bulb shell 30, and the bottom end of the lamp bulb shell 30 is clamped into the clamping groove during installation, so that the lamp bulb shell can be clamped and fixedly installed on the heat sink 20. The bulb shell 30 and the heat sink 20 can also be assembled by using a turnbuckle structure, and during assembly, the bottom end of the bulb shell 30 is screwed into the heat sink 20, and is assembled and fixed with the heat sink 20 after continuously rotating in place.

In an embodiment, as shown in fig. 10 and 11, an inner side wall of the metal inner casing 230 of the heat sink 20 near one end of the lamp bulb casing 30 is recessed outward to form an annular step 231, the light source plate 50 is a circular plate, a bottom surface of the light source plate 50 abuts against a bottom surface of the annular step 231, a circumferential side wall of the light source plate 50 abuts against a side surface of the annular step 231, that is, the light source plate 50 is clamped in the metal inner casing 230, and the light source plate 50 is pressed into the metal inner casing 230 during installation, so that the bottom surface of the light source plate 50 abuts against a bottom surface of the annular step 231. The peripheral edge of the light source plate 50 may be further fastened to the annular step 231 by a caulking member such as a caulking screw.

In an embodiment, as shown in fig. 7 and 8, abutting portions 430 are respectively formed on two sides of one end of the driving board 40, an abutting table 223 is formed at one end of the heat sink 20 close to the lamp cap 10, the driving board 40 is pressed on the heat sink 20 when the light source board 50 is clamped on the heat sink 20, and the abutting portions 430 on two sides of the driving board 40 abut against the abutting table 223. The heat dissipation member 20 is in a cylindrical shape with a large top and a small bottom, the whole drive plate 40 is also in a structure with a large top and a small bottom, the width of one end, close to the bottom, of the drive plate 40 is smaller than that of one end, close to the top, of the drive plate 40, a step is formed at one end, close to the bottom, of the drive plate 40, and a horizontal step surface of the step abuts against the abutting table 223 of the heat dissipation.

In an embodiment, as shown in fig. 4, 8 and 12, a female terminal 51 is disposed in the middle of the light source board 50, a male terminal 420 matched with the female terminal 51 is disposed on a side of the driving board 40 close to the top, the male terminal 420 is inserted into the female terminal 51, and the female terminal 51 can be connected to a circuit of the light source board 50 through a wiring, so as to achieve electrical connection between the light source board 50 and the driving board 40.

As shown in fig. 8, 12 and 13, the male terminal 420 has a plurality of pins 421 extending out of the driving circuit board, a plurality of conductive insertion holes 510 formed by bending metal elastic pieces are embedded in the female terminal 51, the insulating shell of the female terminal 51 is integrally in a convex structure with a large top and a small bottom, a rectangular clamping hole 501 is formed in the middle position of the light source board 50, the smaller end of the female terminal 51 is inserted and fixed in the clamping hole 501, and each pin 421 of the male terminal 420 of the driving board 40 is inserted and fixed in the conductive insertion hole 510 corresponding to the female terminal 51, so that the electrical connection between the light source board 50 and the driving board 40 is realized, the assembly operation of the light source board 50 is simple, the stable electrical connection is realized by using the matched terminal insertion, and the maintenance and the replacement operation of components are also convenient.

As shown in fig. 4 and 12, the driving board 40 is perpendicular to the light source board 50, the driving board 40 is accommodated in the heat sink 20, the light source board 50 is horizontally arranged, the bottom surface of the larger end of the female terminal 51 abuts against the top surface of the light source board 50, and after the male terminal 420 is inserted into the female terminal 51, the light source board 50 presses the driving board 40 onto the heat sink 20 through the female terminal 51, so that the driving board 40 does not shake up and down in the heat sink 20, and no other fixing structure or fastener is required to be additionally arranged. In an embodiment, as shown in fig. 4 and 7, a notch 224 is formed at a position of the injection molding housing 220 near the bottom, the driving board 40 is electrically connected to the lamp cap 10 through a conducting wire (not shown), one end of the conducting wire is electrically connected to the driving board 40, and the other end of the conducting wire penetrates through the notch 224 at the bottom of the injection molding housing 220 and is clamped between the inner side wall of the lamp cap 10 and the outer side wall of the injection molding housing 220, so that the other end of the conducting wire is in contact with the lamp cap 10 to be electrically connected.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A bulb lamp is characterized in that: the method comprises the following steps:

a lamp cap;

the bulb shell is connected with the heat radiating piece;

2. The bulb lamp according to claim 1, wherein: the heat dissipation piece corresponds regulating switch's position has seted up the through-hole, the lateral wall of heat dissipation piece sunken be formed with the spout of through-hole intercommunication, adjustment button includes connecting portion and presses the splenium, connecting portion pass the through-hole with the gear button is connected, press the splenium to slide set up in the spout, press the splenium to be in can pass through when sliding in the spout connecting portion drive the gear button removes.

3. The bulb lamp according to claim 1, wherein: the lamp holder is characterized in that clamping grooves are symmetrically formed in the inner side wall, close to one end of the lamp holder, of the heat dissipation piece, and the two sides of one end of the driving board are adaptive to and clamped in the corresponding clamping grooves.

4. The bulb lamp according to claim 3, wherein: the lamp holder is characterized in that abutting parts are respectively formed on two sides of one end of the driving board, an abutting table is formed at one end, close to the lamp holder, in the radiating piece, and the abutting parts on two sides of the driving board abut against the abutting table when the light source board is clamped to the radiating piece, so that the driving board is pressed on the radiating piece.

5. The bulb lamp according to claim 4, wherein: the light source board is provided with a female terminal, one side of the driving board close to the top is provided with a male terminal matched with the female terminal, and the male terminal is connected with the female terminal in an inserting mode so as to achieve electric connection between the light source board and the driving board.

6. The bulb lamp according to claim 5, wherein: the middle position of the light source plate is provided with a clamping hole with a rectangular cross section, the female terminal is integrally of a convex structure with a large upper part and a small lower part, and the smaller end of the female terminal is inserted and fixed in the clamping hole.

7. The bulb lamp according to claim 6, wherein: the drive board with the light source board sets up perpendicularly, the bottom surface of the great one end of female terminal with the top surface of light source board offsets, the light source board will through female terminal the drive board compress tightly in on the radiating piece.

8. The bulb lamp according to any one of claims 1 to 7, wherein: the heat dissipation piece comprises an injection molding outer shell and a metal inner shell, the metal inner shell is fixedly embedded in the injection molding outer shell, one end of the injection molding outer shell is clamped or fixed in the lamp holder in a threaded connection mode, the injection molding outer shell and the lamp bulb shell are provided with mutually matched buckle structures, and the lamp bulb shell is assembled and fixed on the injection molding outer shell through the buckle structures.

9. The bulb lamp according to claim 8, wherein: the inner side wall of the metal inner shell, which is close to one end of the bulb shell, is outwards recessed to form an annular step, the light source plate is a circular plate, the bottom surface of the light source plate is abutted against the bottom surface of the annular step, and the circumferential side wall of the light source plate is abutted against the side surface of the annular step.

10. The bulb lamp according to claim 8, wherein: the inner wall of the injection molding shell is close to a plurality of convex ribs are arranged at the circumferential interval of one end of the bulb shell, the inner wall of the injection molding shell is close to one end of the bulb shell and is abutted against the step, and the light source plate is clamped and connected to the convex ribs and is abutted between the steps.