CN115451372A

CN115451372A - Welcome projection lamp

Info

Publication number: CN115451372A
Application number: CN202210709026.8A
Authority: CN
Inventors: 王维虎
Original assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Current assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2022-12-09

Abstract

The invention discloses a welcome projection lamp, which belongs to the field of automobile accessories and comprises a welcome projection lamp and a pressing type switch, wherein the welcome projection lamp comprises a lamp base, a detachable projection lamp is assembled on the lamp base, a self-adjusting assembly and a magnetic force connecting assembly are arranged between the projection lamp and the lamp base, the pressing type switch comprises a switch base assembly, a detachable switch main body is assembled on the switch base assembly, a switch button is assembled on the switch main body, a power supply unit is assembled inside the switch main body and the projection lamp, the switch main body is connected with the projection lamp through Bluetooth, the self-adjusting assembly comprises a positioning connecting rod, a positioning sleeve and a balancing weight, the welcome projection lamp can be installed without damaging an automobile, the projection lamp is positioned less difficultly in the process of installing the projection lamp, and the operation difficulty is less.

Description

Welcome projection lamp

Technical Field

The invention relates to the field of automobile accessories, in particular to a welcome projection lamp.

Background

The welcome lamp is one of automobile lighting and is mainly installed at the bottom of an automobile door and below a rearview mirror. When a driver and passengers get on the vehicle, the lamp at the bottom of the vehicle door can be instantly turned on to illuminate the ground, the vehicle door is turned off when the driver and the passengers get off the vehicle, and the vehicle is also turned on when the driver and the passengers get on the vehicle. Due to its mode of operation, many owners call it a welcome light.

At present, when the welcome lamp is additionally arranged on an automobile, the automobile is required to be holed, the damage to the automobile can be caused in the process, and the original structure of the automobile is further influenced, for example, a split welcome projection lamp is disclosed in Chinese patent with the publication number of CN210135533U, and the split welcome projection lamp is mainly installed in the automobile door in a drilling installation mode, so that the welcome projection lamp can be conveniently and universally installed, the original automobile structure is prevented from being removed, and the installation is rapid;

in order to avoid irreversible damage to an automobile when a guest greeting lamp is additionally installed, the existing installation of various guest greeting lamps is mostly assembled on the automobile in a negative pressure adsorption or adhesion mode, wherein the negative pressure inside the guest greeting lamps is gradually reduced when the guest greeting lamps are adsorbed by the negative pressure, the adhesion force of the adhesion force is gradually reduced when the adhesion is carried out, in the mode, the adhesion force needs to be regularly re-installed to ensure the stability of the guest greeting lamp fixed on the automobile, in the re-installation process, in order to ensure that the projection projected by the guest greeting projection lamp can vertically face downwards, the guest greeting projection lamp needs to be repeatedly positioned and debugged, the assembly mode can undoubtedly increase the regulation and control difficulty of the guest greeting projection lamp, and the guest greeting projection lamp is provided for the purpose.

Disclosure of Invention

Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a welcome projection lamp, which can be used for installing the welcome projection lamp without damaging an automobile, and has the advantages of low difficulty in positioning the projection lamp and low operation difficulty in the process of installing the projection lamp.

Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A guest greeting projection lamp comprises a guest greeting projection lamp and a press type switch, wherein the guest greeting projection lamp comprises a lamp base, a detachable projection lamp is assembled on the lamp base, and a self-adjusting assembly and a magnetic force connecting assembly are arranged between the projection lamp and the lamp base;

the push type switch is including switch base subassembly, be equipped with detachable switch main part on the switch base subassembly, be equipped with shift knob in the switch main part, switch main part and projection lamps and lanterns inside all is equipped with electrical unit, just switch main part and projection lamps and lanterns bluetooth are connected.

Furthermore, the projection lamp comprises a shell and a projection system arranged in the shell, wherein the projection system comprises a light source, a condenser lens group, a film, an imaging lens group and a reflector which are sequentially arranged along an optical axis at intervals, the shell is provided with a projection port, the surface of which is parallel to the optical axis, and the reflector and the optical axis intersect to form an included angle for changing the direction of a projection light path to reflect a projection pattern out of the projection port.

Further, from adjusting the subassembly including location connecting rod, position sleeve and balancing weight, location connecting rod fixed connection is in the front side of lamps and lanterns base, just the position connecting rod is the assembly of cylinder and hemisphere, the hemisphere is located the cylinder and keeps away from the one end of lamps and lanterns base, position sleeve fixed connection is in the rear side of projection lamps and lanterns, just position sleeve rotates the outside of connecting at the location connecting rod, balancing weight fixed connection is in the lower part of projection lamps and lanterns rear side.

Further, magnetic force coupling assembling is including annular paster and electro-magnet, annular paster fixed connection is in the front side of lamps and lanterns base, electro-magnet fixed connection is in the rear side of projection lamps and lanterns, annular paster and electro-magnet magnetism are connected.

Furthermore, the lamp base comprises a first base, the first base is provided with a synchronous adjusting component and a plurality of first negative pressure adsorption components, and the first negative pressure adsorption components are arranged on the first base in an annular array;

first negative pressure adsorption component is including the first absorption barrel of fixed connection on first base, the front side rotation that the one end of first absorption barrel extends to first base is connected with a winding section of thick bamboo, the outside winding of a winding section of thick bamboo has the stay cord, the one end of stay cord extends to the first gas pushing plate of the inside fixedly connected with of first absorption barrel, first gas pushing plate and first absorption barrel transition fit, a plurality of first bleeder vents have been seted up to the one end that first absorption barrel is located first base front side.

Furthermore, a return spring is arranged inside the first adsorption cylinder body and on one side, close to the winding cylinder, of the first air pushing plate.

Furthermore, the synchronous adjusting assembly comprises an annular rotating ring, a large bevel gear ring and a plurality of small bevel gears, the annular rotating ring is rotatably connected to the front side of the first base, the large bevel gear ring is assembled on the annular rotating ring, the small bevel gears are fixedly connected to the winding drums respectively, and the small bevel gears are in meshed connection with the large bevel gear ring;

and the first base is also provided with a locking assembly matched with the annular rotating ring.

Furthermore, the locking subassembly is including connecting fastener and a plurality of location bayonet socket, it is a plurality of to connect fastener sliding connection on first base the location bayonet socket is annular array and sets up on the annular rotates and circles, connect the fastener and rotate the relative one side of circle rotation direction with the annular and seted up positioning channel groove, positioning channel socket joint is on positioning channel groove.

Further, the switch base subassembly is including the second base, intermediate position fixed connection on the second base has the switch seat, the switch main part assembles the inside at the switch seat, just be located the both sides of switch seat on the second base and all be provided with the second negative pressure adsorption component.

Further, the second negative pressure adsorption assembly comprises a second adsorption barrel fixedly connected to a second base, a plurality of second air holes are formed in the upper side of the second adsorption barrel, a threaded rotating rod is rotatably connected to the middle of the second adsorption barrel, and a second air pushing plate in transition fit with the second adsorption barrel is connected to the outer side of the threaded rotating rod in a threaded manner.

Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) This scheme adsorbs lamp base and switch base subassembly on the car through utilizing the negative pressure, need not cause the harm to the car when installing usher projection lamp additional, compares in present absorption formula or bonding formula mounting means, realization rapid Assembly that this scheme can be more nimble and maintain, secondly, its assembly effect is better, compares with present market same type product and has more considerable market value.

(2) Through setting up detachable projection lamps and lanterns and switch main part, can take out it as required and charge to fix a position the angle to projection lamps and lanterns that can be comparatively simple through setting up self-interacting subassembly and magnetic force coupling assembling, to present product of the same kind, the operability is better, reduces the operation degree of difficulty by a wide margin.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure of the greeting projection lamp of the invention;

FIG. 3 is a schematic sectional view of the first vacuum adsorption module of the present invention;

FIG. 4 is a schematic view of a lamp base according to the present invention;

FIG. 5 is a schematic structural view of the locking assembly of the present invention;

FIG. 6 is a schematic view of a partial cut-away structure of the push switch of the present invention;

fig. 7 is a schematic sectional view of a projection lamp according to the present invention.

The reference numbers in the figures illustrate:

1. a first base; 2. a projection lamp; 3. a first adsorption cylinder; 4. a first gas pushing plate; 5. a first seal gasket; 6. a winding drum; 7. pulling a rope; 8. a return spring; 9. a bevel pinion; 10. a first air vent; 11. an annular rotating ring; 12. a large bevel gear ring; 13. positioning the connecting rod; 14. positioning the bayonet; 15. connecting clamping pieces; 16. positioning a clamping groove; 17. annular paster; 18. A positioning sleeve; 19. an electromagnet; 20. a second adsorption cylinder; 21. a second gasket; 22. a second air hole; 23. a threaded rotating rod; 24. a second gas pushing plate; 25. an auxiliary support; 26. a switch base; 27. a transmission member; 28. a second base; 29. A switch button; 30. a switch main body; 31. a balancing weight; 32. a light source; 33. a condenser lens group; 34. film; 35. an imaging lens group; 36. a mirror; 37. a projection port; 38. a housing.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it should be understood that the embodiments described are only a few embodiments of the present invention, rather than all embodiments, and that all other embodiments that can be made by one skilled in the art without inventive effort based on the embodiments described herein will fall within the scope of the present invention.

Referring to fig. 1 to 7, the greeting projection lamp comprises a greeting projection lamp and a pressing switch, the greeting projection lamp is connected with the pressing switch through bluetooth, the greeting projection lamp is assembled on a vehicle door, the pressing switch is assembled on a vehicle body, when the vehicle door is closed, the vehicle door presses the pressing switch to close the greeting projection lamp and stop projection, when the vehicle door is opened, the vehicle door is separated from the pressing switch and does not press the pressing switch any more, so that the pressing switch is reset, the greeting projection lamp is turned on, and projection is performed on the ground.

Referring to fig. 7, the projection lamp 2 includes a housing 38 and a projection system installed in the housing 38, the projection system includes a light source 32, a condenser lens group 33, a film 34, an imaging lens group 35 and a reflector 36 arranged at intervals along an optical axis, the housing 38 is provided with a projection port 37 whose surface is parallel to the optical axis, the reflector 36 intersects the optical axis to form an included angle for changing the direction of a projection light path to reflect a projection pattern from the projection port 37, when the projection lamp is used, the light source 32 is turned on, light emitted by the light source 32 is first collected by the condenser lens group 33 and then irradiates the film 34, then the light passing through the film 34 passes through the imaging lens group 35 and is projected onto the reflector 36, the light passing through the imaging lens group 35 is reflected by the reflector 36 and then reflected from the projection port 37 for projecting the projection pattern, and the specific projection principle is the same as that of a conventional projection lamp.

The welcome projection lamp comprises a lamp base, a detachable projection lamp 2 is assembled on the lamp base, and a self-adjusting assembly and a magnetic force connecting assembly are arranged between the projection lamp 2 and the lamp base;

the specific implementation process is that the lamp base is installed on the vehicle door firstly, then the projection lamp 2 is assembled, the angle of the projection lamp 2 is adjusted through the self-adjusting assembly during assembly, the position of the lamp holder at the lower part of the projection lamp 2 is always vertical downwards, therefore, the position of the projection lamp 2 is adjusted, the lamp base and the projection lamp 2 are connected through the magnetic connecting assembly after adjustment is completed, and the assembly of the projection lamp 2 is completed.

Here, please refer to fig. 2, the self-adjusting assembly includes a positioning connecting rod 13, a positioning sleeve 18 and a weight block 31, the positioning connecting rod 13 is fixedly connected to the front side of the lamp base, the positioning connecting rod 13 is a combination of a cylinder and a hemisphere, the hemisphere is located at one end of the cylinder away from the lamp base, the positioning sleeve 18 is fixedly connected to the rear side of the projection lamp 2, the positioning sleeve 18 is rotatably connected to the outer side of the positioning connecting rod 13, the weight block 31 is fixedly connected to the lower portion of the rear side of the projection lamp 2, at this time, when the projection lamp 2 is assembled, the positioning sleeve 18 is assembled to the outer side of the positioning connecting rod 13, the gravity of the weight block 31 is used to drive the lower portion of the projection lamp 2 to fall down, the lamp holder at the lower portion of the projection lamp 2 is always vertically downward, and thus the automatic positioning of the projection lamp 2 is completed.

Referring to fig. 2 again, the magnetic connecting assembly includes an annular patch 17 and an electromagnet 19, the annular patch 17 is fixedly connected to the front side of the lamp base, and is preferably made of iron, the electromagnet 19 is fixedly connected to the rear side of the projection lamp 2, and is preferably a lower side of the positioning sleeve 18, the annular patch 17 is magnetically connected to the electromagnet 19, when the position adjustment of the projection lamp 2 is completed, the electromagnet 19 is started to adsorb the annular patch 17, and the connection between the annular patch 17 and the electromagnet 19 is completed, so as to reinforce the connection between the first base 1 and the projection lamp 2, and in this case, the annular patch can be connected to the internal power supply of the automobile through a wire, specifically, the wire can be inserted along a gap of an adhesive tape of the automobile, which is similar to a wire arranging mode of a driving recorder as a whole, and does not need to punch wire arranging, and can reduce consumption of the electromagnet 19 on the internal power supply, and improve the usage duration of the internal power supply.

Please refer to fig. 2-3, the lamp base includes a first base 1, the first base 1 is equipped with a plurality of first negative pressure adsorption components and a synchronous adjustment component for synchronously adjusting the internal air pressure of the plurality of first negative pressure adsorption components, the plurality of first negative pressure adsorption components are arranged on the first base 1 in an annular array manner, when the first base 1 is fixed, the first base 1 is placed on the vehicle door, and then the synchronous adjustment component is used for adjusting the internal air pressure of the first negative pressure adsorption components to make the first negative pressure adsorption components adsorbed on the vehicle door, so that the first base 1 can be fixed without opening the vehicle door, the damage to the vehicle door is small, and the installation difficulty is small.

Here, in order to reduce the volume of first negative pressure adsorption component, select for use the rolling of rope to adjust its inside atmospheric pressure, the volume of first negative pressure adsorption component can not change at the in-process of adjusting.

In a specific embodiment, the first negative pressure adsorption assembly comprises a first adsorption cylinder 3 fixedly connected to the first base 1, one end of the first adsorption cylinder 3 extends to the rear side of the first base 1 and is fixedly connected with a first sealing gasket 5 which is arranged in an opening, a gap between the first adsorption cylinder 3 and a vehicle door can be effectively reduced by arranging the first sealing gasket 5, the air tightness of the first adsorption cylinder is improved, the other end of the first adsorption cylinder 3 extends to the front side of the first base 1 and is fixedly connected with an auxiliary support 25, a winding cylinder 6 is rotatably connected to the auxiliary support 25, a pull rope 7 is wound on the outer side of the winding cylinder 6, one end of the pull rope 7 extends to the inside of the first adsorption cylinder 3 and is fixedly connected with a first air pushing plate 4, and the first air pushing plate 4 and the first adsorption cylinder 3 are in transition fit;

at the moment, the winding drum 6 is driven to rotate, so that the pull rope 7 can be wound, the pull rope 7 pulls the first gas pushing plate 4 to drive the first gas pushing plate 4 to move in the first adsorption drum 3, one end of the first adsorption drum 3, which is positioned at the front side of the first base 1, is also provided with a plurality of first air holes 10, and when the first gas pushing plate 4 moves, gas in the first adsorption drum 3 can be discharged through the first air holes 10, so that the pressure in the first adsorption drum 3 is reduced;

simultaneously, in order to drive first gas pushing plate 4 and carry out automatic re-setting, the inside of first absorption barrel 3 and be located one side that first gas pushing plate 4 is close to winding section of thick bamboo 6 and be equipped with return spring 8, utilize return spring 8's elasticity to promote first gas pushing plate 4, can reset first gas pushing plate 4 to the inside position of keeping away from winding section of thick bamboo 6 of first absorption barrel 3 when not using.

Referring to fig. 3-5, the synchronous adjusting assembly includes an annular rotating ring 11, a large bevel gear ring 12 and a plurality of small bevel gears 9, the annular rotating ring 11 is rotatably connected to the front side of the first base 1, the large bevel gear ring 12 is assembled on the annular rotating ring 11, the plurality of small bevel gears 9 are respectively and fixedly connected to the plurality of winding drums 6, and the plurality of small bevel gears 9 are all meshed with the large bevel gear ring 12, when the annular rotating ring 11 rotates, the large bevel gear ring 12 can drive the plurality of small bevel gears 9 to rotate together (two bevel gears are meshed with each other to function like a gear reverser), and when the small bevel gears 9 rotate, the winding drums 6 can be driven to rotate together to complete the winding of the pull rope 7, thereby achieving the subsequent air pressure adjusting effect;

meanwhile, in order to position the adjusted annular rotating ring 11, a locking assembly matched with the annular rotating ring 11 is further arranged on the first base 1, the locking assembly comprises a connecting clamping piece 15 and a plurality of positioning bayonets 14, the connecting clamping piece 15 is connected to the first base 1 in a sliding mode, the positioning bayonets 14 are arranged on the annular rotating ring 11 in an annular array mode, one side, opposite to the rotating direction of the annular rotating ring 11, of the connecting clamping piece 15 is provided with a positioning clamping groove 16, the positioning bayonets 14 are clamped on the positioning clamping groove 16, at the moment, after the annular rotating ring 11 is rotated, the sliding connecting clamping piece 15 is connected into the corresponding positioning bayonets 14, then the annular rotating ring 11 is driven to rotate by the reactive force generated by the winding drum 6, the annular rotating ring 11 is clamped with the positioning clamping grooves 16 through the positioning clamping grooves 14, fixing of the annular rotating ring 11 is completed, and the stability is high.

Referring to fig. 1 and 6, the push switch includes a switch base assembly, a detachable switch main body 30 is assembled on the switch base assembly, a switch button 29 is assembled on the switch main body 30, power units are assembled inside the switch main body 30 and the projection lamp 2, and the switch main body 30 is connected with the projection lamp 2 through bluetooth;

the switch base assembly comprises a second base 28, a switch base 26 is fixedly connected to the middle position of the second base 28, a switch main body 30 is assembled inside the switch base 26, second negative pressure adsorption assemblies are arranged on the second base 28 and located on two sides of the switch base 26, and at the moment, the second base 28 is fixedly connected to the vehicle body through the second negative pressure adsorption assemblies, so that the switch main body 30 can be assembled;

the second negative pressure adsorption component comprises a second adsorption cylinder body 20 fixedly connected to a second base 28, a second sealing gasket 21 is fixedly connected to the lower side of the second adsorption cylinder body 20, a plurality of second air holes 22 are formed in the upper side of the second adsorption cylinder body 20, a threaded rotating rod 23 is rotatably connected to the middle position of the second adsorption cylinder body 20, a second air pushing plate 24 in transition fit with the second adsorption cylinder body 20 is in threaded connection with the outer side of the threaded rotating rod 23, the threaded rotating rod 23 can drive the second air pushing plate 24 in threaded connection with the threaded rotating rod to move together when rotating, and when moving, the second air pushing plate 24 can push out air in the second adsorption cylinder body 20 through the second air holes 22, so that air pressure in the second adsorption cylinder body 20 is adjusted and adsorbed on the vehicle body;

meanwhile, in order to more conveniently drive the screw rotating rod 23 to rotate, the upper end of the screw rotating rod 23 extends to the upper fixedly connected with transmission part 27 of the second adsorption cylinder 20, the transmission part 27 can be any one of a knob and a screw cap head, and the screw cap head can be any one of an outer hexagonal cap head, an inner hexagonal cap head and a cross-shaped groove cap head, can be selected according to the requirements of users, and then rotates the screw cap head through an inner hexagonal wrench, the outer hexagonal cap head and a cross screwdriver and other matched tools.

When in use: the first base 1 is placed on a vehicle door, then the annular rotating ring 11 is rotated, when the annular rotating ring 11 rotates, the plurality of small bevel gears 9 can be driven to rotate together through the large bevel gear ring 12, when the small bevel gears 9 rotate, the winding drum 6 can be driven to rotate together, the pull rope 7 is wound, the pull rope 7 is pulled to the first air pushing plate 4, the first air pushing plate 4 is driven to move inside the first adsorption drum 3, when the first air pushing plate 4 moves, air inside the first adsorption drum 3 can be discharged through the first air holes 10, so that air pressure inside the first adsorption drum 3 is reduced, the air pressure is adsorbed on the vehicle door, then the clamping piece 15 is connected in a sliding mode, the connecting clamping piece 15 is inserted into the corresponding positioning bayonet 14, then the annular rotating ring 11 is driven to rotate by the reactive force generated by the winding drum 6, the annular rotating ring 11 is clamped together through the positioning bayonet 14 and the positioning bayonet 16, and the annular rotating ring 11 is fixed;

the positioning sleeve 18 is assembled on the outer side of the positioning connecting rod 13, the lamp holder at the lower part of the projection lamp 2 can be always vertically downward by utilizing the gravity of the balancing weight 31, the automatic positioning of the projection lamp 2 is completed, after the position adjustment of the projection lamp 2 is completed, the electromagnet 19 is started to adsorb the annular patch 17, the connection between the annular patch 17 and the electromagnet 19 is completed, and therefore the connection between the first base 1 and the projection lamp 2 is reinforced;

meanwhile, the second base 28 is placed on the vehicle body, then the threaded rotating rod 23 is rotated, when the threaded rotating rod 23 rotates, the second air pushing plate 24 in threaded connection with the threaded rotating rod can be driven to move together, air in the second adsorption cylinder 20 is pushed out through the second air holes 22, air pressure in the second adsorption cylinder 20 is adjusted, the air is adsorbed on the vehicle body, and then the switch main body 30 is assembled in the switch base 26;

after the electric energy inside the projection lamp 2 and the switch main body 30 is consumed, the projection lamp and the switch main body are taken out for charging, and the projection lamp and the switch main body are assembled according to the steps after the charging is finished. Secondly, can also be connected to the built-in power of car on through the wire with it, specifically can insert the wire along the adhesive tape gap department of car, whole be similar to vehicle event data recorder's winding displacement mode.

In conclusion, the lamp base and the switch base assembly are adsorbed on the automobile by negative pressure, the automobile does not need to be damaged when the welcome projection lamp is additionally installed, the projection lamp 2 and the switch main body 30 which are detachable can be taken out for charging, the angle of the projection lamp 2 can be simply positioned by arranging the self-adjusting assembly and the magnetic connecting assembly, and the operation difficulty is reduced.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should also be able to substitute or change the technical solution and the modified concept of the present invention within the technical scope of the present disclosure, and all such alternatives and modifications are within the scope of the present invention.

Claims

1. The utility model provides a guest greeting projection lamp, includes guest greeting projection lamp and push type switch, its characterized in that: the welcome projection lamp comprises a lamp base, a detachable projection lamp (2) is assembled on the lamp base, and a self-adjusting assembly and a magnetic force connecting assembly are arranged between the projection lamp (2) and the lamp base;

the push type switch is including switch base subassembly, be equipped with detachable switch main part (30) on the switch base subassembly, be equipped with shift knob (29) on switch main part (30), switch main part (30) and projection lamps and lanterns (2) inside all is equipped with electrical unit, just switch main part (30) and projection lamps and lanterns (2) bluetooth are connected.

2. A guest-greeting projection lamp as claimed in claim 1, wherein: projection lamps and lanterns (2) include shell (38), and install in projection system in shell (38), projection system includes along light axis interval arrangement's in proper order light source (32), condenser lens group (33), film (34), imaging lens group (35) and speculum (36), seted up on shell (38) its place face with the parallel projection mouth (37) of optical axis, speculum (36) with the optical axis is crossing to be formed with the contained angle for change projection light path's direction is followed projection pattern reflects off in order to throw mouth (37).

3. A welcome projector as claimed in claim 1 wherein: from adjusting the subassembly including location connecting rod (13), position sleeve (18) and balancing weight (31), location connecting rod (13) fixed connection is in the front side of lamps and lanterns base, just position connecting rod (13) is the assembly of cylinder and hemisphere, the hemisphere is located the cylinder and keeps away from the one end of lamps and lanterns base, position sleeve (18) fixed connection is in the rear side of projection lamps and lanterns (2), just position sleeve (18) rotate the outside of connecting at location connecting rod (13), balancing weight (31) fixed connection is in the lower part of projection lamps and lanterns (2) rear side.

4. A guest-greeting projection lamp as claimed in claim 1, wherein: magnetic force coupling assembling is including annular paster (17) and electro-magnet (19), annular paster (17) fixed connection is in the front side of lamp base, electro-magnet (19) fixed connection is in the rear side of projection lamps and lanterns (2), annular paster (17) and electro-magnet (19) magnetism are connected.

5. A welcome projector as claimed in claim 1 wherein: the lamp base comprises a first base (1), a synchronous adjusting component and a plurality of first negative pressure adsorption components are assembled on the first base (1), and the first negative pressure adsorption components are arranged on the first base (1) in an annular array;

first negative pressure adsorption component is including first absorption barrel (3) of fixed connection on first base (1), the front side rotation that the one end of first absorption barrel (3) extended to first base (1) is connected with a winding section of thick bamboo (6), the outside winding of a winding section of thick bamboo (6) has stay cord (7), the one end of stay cord (7) extends to the first gas board (4) of pushing away of the inside fixedly connected with of first absorption barrel (3), first gas board (4) and first absorption barrel (3) transition fit push away, a plurality of first bleeder vents (10) have been seted up to the one end that first absorption barrel (3) are located first base (1) front side.

6. A welcome projector as claimed in claim 5 wherein: and a return spring (8) is assembled in the first adsorption cylinder (3) and on one side of the first air pushing plate (4) close to the winding cylinder (6).

7. A welcome projector as claimed in claim 5 wherein: the synchronous adjusting assembly comprises an annular rotating ring (11), a large bevel gear ring (12) and a plurality of small bevel gears (9), the annular rotating ring (11) is rotatably connected to the front side of the first base (1), the large bevel gear ring (12) is assembled on the annular rotating ring (11), the small bevel gears (9) are respectively and fixedly connected to the winding barrels (6), and the small bevel gears (9) are all in meshed connection with the large bevel gear ring (12);

and the first base (1) is also provided with a locking assembly matched with the annular rotating ring (11).

8. A guest-greeting projection lamp as claimed in claim 7, wherein: locking Assembly is including connecting fastener (15) and a plurality of location bayonet socket (14), connect fastener (15) sliding connection on first base (1), it is a plurality of location bayonet socket (14) are the annular array and set up on annular rotation circle (11), connect fastener (15) and annular rotation circle (11) one side that the direction is relative has seted up positioning groove (16), location bayonet socket (14) joint is on positioning groove (16).

9. A guest-greeting projection lamp as claimed in claim 1, wherein: the switch base subassembly is including second base (28), intermediate position fixedly connected with switch seat (26) on second base (28), switch main part (30) assemble the inside at switch seat (26), just the both sides that are located switch seat (26) on second base (28) all are provided with second negative pressure adsorption component.

10. A welcome projector as claimed in claim 9 wherein: the second negative pressure adsorption component comprises a second adsorption barrel body (20) fixedly connected to a second base (28), a plurality of second air holes (22) are formed in the upper side of the second adsorption barrel body (20), the middle position of the second adsorption barrel body (20) is rotatably connected with a threaded rotating rod (23), and the outer side of the threaded rotating rod (23) is in threaded connection with a second air pushing plate (24) in transition fit with the second adsorption barrel body (20).