CN115598905A

CN115598905A - Projection device

Info

Publication number: CN115598905A
Application number: CN202211314474.4A
Authority: CN
Inventors: 许龙才; 黄旋梓; 薛栋津; 陈振彬; 李林
Original assignee: Guangdong Time Life Technology Co ltd
Current assignee: Guangdong Time Life Technology Co ltd
Priority date: 2022-10-24
Filing date: 2022-10-24
Publication date: 2023-01-13

Abstract

The invention discloses a projection device, comprising: the base comprises a light hole and a limiting part arranged around the light hole, wherein the limiting part comprises a base part and a plurality of bump structures extending from the base part and arranged at intervals; the corrugated sheet assembly is movably arranged on the base, a gap is formed between the corrugated sheet assembly and the base, the plurality of salient point structures are arranged towards the corrugated sheet assembly, the friction force between the limiting part and the corrugated sheet assembly is reduced, and the corrugated sheet assembly comprises a light transmission part and a gear ring part arranged around the light transmission part; the driving assembly is matched with the gear ring part and drives the corrugated sheet assembly to rotate; and the light source assembly emits light which passes through the light transmission part and the light transmission hole.

Description

Projection device

[ technical field ] A

The invention relates to the technical field of projection devices, in particular to a projection device.

[ background of the invention ]

The existing projection device comprises a base, an LED lamp fixed on the base, an interference sheet assembly located above the LED lamp, a motor driving the corrugated sheet assembly to rotate and a pressing plate pressing the corrugated sheet assembly to move upwards, wherein the interference sheet assembly is mounted on the base, and the motor comprises a gear matched with the interference sheet assembly.

Since the pressing plate restricts only the interference piece assembly from moving excessively upward and does not restrict the interference piece assembly in the horizontal direction, the interference piece assembly is easily deviated in the horizontal direction.

Therefore, there is a need to design a new projection device to overcome the above problems.

[ summary of the invention ]

In response to the problems encountered in the background art, the present invention provides a projection device having a base including bump structures that cooperate with a bellows assembly.

In order to achieve the purpose, the invention adopts the following technical means:

a projection device, comprising: the base comprises a light hole and a limiting part arranged around the light hole, wherein the limiting part comprises a base part and a plurality of bump structures extending from the base part and arranged at intervals; the corrugated sheet assembly is movably arranged on the base, a gap is formed between the corrugated sheet assembly and the base, the plurality of salient point structures are arranged towards the corrugated sheet assembly, the friction force between the limiting part and the corrugated sheet assembly is reduced, and the corrugated sheet assembly comprises a light transmission part and a gear ring part arranged around the light transmission part; the driving assembly is matched with the gear ring part and drives the corrugated sheet assembly to rotate; and the light source assembly emits light which passes through the light transmission part and the light transmission hole.

Further, the bump structure is a plurality of convex hulls formed by extending upwards from the base, gaps are formed between the plurality of convex hulls and the corrugated sheet assembly in the vertical direction, and the plurality of convex hulls support the light transmission part or the toothed ring part upwards.

Further, the corrugated sheet assembly comprises a rotating part arranged around the light transmission part, the rotating part moves circumferentially relative to the limiting part, and the limiting part limits excessive offset of the corrugated sheet assembly in the horizontal direction.

Further, the salient point structure is a plurality of protrusions formed by extending from the base part towards the rotating part, and at least part of the protrusions are in contact with the rotating part in the horizontal direction.

Further, the rotating part is arranged around the limiting part or the limiting part is arranged around the rotating part.

Further, the projection device further comprises a limiting plate located above the corrugated sheet assembly, and the limiting plate is fixed on the base and limits the corrugated sheet assembly to move upwards.

Further, the limiting plate comprises a light outlet hole penetrating through the upper surface and the lower surface of the limiting plate and a limiting portion surrounding the light outlet hole, the corrugated sheet assembly comprises a flange formed by upward extending the light-transmitting portion or the gear ring portion, and the flange is arranged around the limiting portion or the limiting portion is arranged around the flange.

Further, the light holes and the light outlet holes are arranged in an up-down alignment mode.

Further, the projection device comprises an interference piece arranged in the light hole, and light emitted by the light source component sequentially passes through the interference piece and the light transmission part.

Further, the base includes around a plurality of fixed columns that the ring gear portion set up, the limiting plate include a plurality of with fixed column one-to-one fixed complex fixed part.

Compared with the prior art, the projection device has the following beneficial effects:

the light-transmitting device comprises a base, a light-transmitting hole and a limiting part arranged around the light-transmitting hole, wherein the limiting part comprises a base part and a plurality of bump structures extending from the base part and arranged at intervals; the corrugated piece assembly is movably arranged on the base, a gap is formed between the corrugated piece assembly and the base, the plurality of convex point structures are arranged towards the corrugated piece assembly, the friction force between the limiting part and the corrugated piece assembly is reduced, and the corrugated piece assembly comprises a light transmission part and a toothed ring part arranged around the light transmission part; and the driving assembly is matched with the gear ring part.

[ description of the drawings ]

FIG. 1 is an exploded perspective view of the present invention;

FIG. 2 is a perspective assembly view of the base, the driving assembly, the light source assembly, the corrugated sheet assembly and the limiting plate in FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 isbase:Sub>A cross-sectional view of FIG. 3 taken along section line A-A;

FIG. 5 is a partial enlarged view of b in FIG. 4;

FIG. 6 is an exploded perspective view of FIG. 2;

FIG. 7 is a perspective view of the base of FIG. 6;

FIG. 8 is a perspective view of the corrugated sheet assembly and the restrictor plate of FIG. 6;

FIG. 9 is an exploded perspective view of the corrugated sheet assembly of FIG. 8.

Reference numerals for specific embodiments illustrate:

projection device 100	Housing 1	Cavity 11	Internal thread 12
				Base 2	Light hole 21	Support part 22	Hook 23
Stopper 24	Base 241	Convex hull 242	Bulge 243
				Fixing post 25	Groove 26	Holding part 27	Light source assembly 3
Lamp panel 31	Lamp bead 32	Convex lens 33	Drive assembly 4
				Gear 41	Interference sheet 5	Corrugated sheet assembly 6	Light transmission part 61
Rim portion 62	Limiting groove 621	Stopper 622	Outer gear ring 623
				Rotating part 624	Flange 625	Limiting plate 7	Main body 71
Light-emitting hole 72	Restriction section 73	Shielding part 74	Condenser lens 8
				External thread 81	Horn 9	Main board 200

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

As shown in fig. 1 to 9, a projection apparatus 100 according to the present invention includes a housing 1, a base 2 accommodated in the housing 1, a light source assembly 3, a driving assembly 4 mounted on the base 2, an interference sheet 5, a corrugated sheet assembly 6, a position limiting plate 7 located above the corrugated sheet assembly 6, and a condenser lens 8, a speaker 9, and a main board 200 mounted on the housing 1.

As shown in fig. 1 and 7, the housing 1 includes a cavity 11 and an internal thread 12 disposed around the cavity 11. The base 2 is accommodated in the inner cavity and comprises a light hole 21 penetrating through the upper surface and the lower surface of the base, a supporting part 22 connected with the inner wall of the light hole 21, a plurality of clamping hooks 23 arranged around the light hole 21, a limiting part 24 arranged around the light hole 21, a plurality of fixing columns 25 arranged around the limiting part, and a groove 26 and a fixing part 27 positioned on the outer side of each fixing column 25. The plurality of hooks 23 are located at the outer side of the supporting portion 22, and the limiting portion 24 surrounds the plurality of hooks 23. The position limiting portion 24 includes a base portion 241, a plurality of convex hulls 242 extending upward from the base portion 241, and a plurality of protrusions 243 extending in a horizontal direction from the base portion 241, wherein the plurality of convex hulls 242 and the plurality of protrusions 243 are spaced around the light-transmitting hole 21 along the base portion 241. The convex hulls 242 and the protrusions 243 can be defined as bump structures. The groove 26 is located at the rear side of the light hole 21, and the two grooves are spaced apart from each other, and the two holding portions 27 are located at the left and right sides of the groove, respectively.

As shown in fig. 2 and 4, the light source assembly 3 is located right below the light-transmitting hole 21. The light source assembly 3 comprises a lamp panel 31, at least one lamp bead 32 fixed on the lamp panel 31 and a condensing lens 8 positioned above the lamp bead 32.

As shown in fig. 2 and 6, the driving assembly 4 is mounted to the recess 26. The two fixing lugs of the driving component 4 are fixed to the two fixing portions 27 in a one-to-one correspondence manner. The driving assembly 4 includes a gear 41 of the rotor fixed thereon, and the gear 41 is located between the two fixing posts 25.

As shown in fig. 4 and 5, the interference sheet 5 is mounted to the light transmission hole 21 and located below the corrugated sheet assembly 6. The supporting portion 22 supports the interference piece 5 upward, and the plurality of hooks 23 block the interference piece 5 from moving upward. The interference sheet 5 may be a transparent glass sheet or a transparent plastic sheet. The surface of the interference sheet 5 is provided with finer grains similar to ripples. Of course, in other embodiments, the interference sheet 5 may also be above the corrugated sheet assembly 6, i.e. the corrugated sheet assembly 6 is located between the light source assembly 3 and the interference sheet 5.

As shown in fig. 5, 8 and 9, the corrugated sheet assembly 6 is movably engaged with the stopper portion 24. The corrugated sheet assembly 6 includes a ring gear portion 62 in which a translucent portion 61 is provided around the translucent portion 61. The light-transmitting portion 61 and the rim portion 62 may be formed separately or integrally. The light-transmitting part 61 is formed with lines of protrusions 243 with various structures. The light transmitting portion 61 is located directly above the interference sheet 5. The ring gear portion 62 includes a stopper groove 621 penetrating upper and lower surfaces thereof, a stopper 622 connecting groove walls of the stopper groove 621, an outer ring gear 623 disposed around the stopper groove 621, a rotating portion 624 formed to extend downward from the outer ring gear 623, and a flange 625 formed to extend upward from the outer ring gear 623. The blocking portion 622 is formed to extend in a horizontal direction. The rotation portion 624 and the flange 625 are both disposed around the transparent portion 61. In other embodiments, the rotating portion 624 and the flange 625 may be disposed on the transparent portion 61. The light-transmitting portion 61 is accommodated in the limiting groove 621, the blocking portion 622 blocks the light-transmitting portion 61 from moving downward, that is, the blocking portion 622 supports the light-transmitting portion 61 upward, the light-transmitting portion 61 can also be installed upward in the limiting groove 621, the light-transmitting portion 61 is fixed on the groove wall of the limiting groove 621 together with glue, and the blocking portion 622 blocks the light-transmitting portion 61 from moving upward. The light-transmitting portion 61 and the base portion 241 form a gap in the vertical direction, and the light-transmitting portion 61 abuts against the plurality of convex hulls 242 downward, which is beneficial to reducing the movement friction between the limiting portion 24 and the corrugated sheet assembly 6 in the vertical direction. The rotating portion 624 is sleeved on the periphery of the limiting portion 24, and the rotating portion 624 moves circumferentially around the limiting portion 24, but in other embodiments, the limiting portion 24 may be sleeved outside the rotating portion 624. The plurality of projections 243 are arranged toward the turning portion 624 in the horizontal direction, the turning portion 624 forms a gap with the base portion 241 in the horizontal direction, and when the corrugated sheet assembly 6 rotates, at least part of the projections 243 are brought into contact with the turning portion 624 in the horizontal direction, reducing the moving friction of the corrugated sheet assembly 6 and the stopper portion 24 in the horizontal direction.

As shown in fig. 2, 6 and 8, the restriction plate 7 restricts upward movement of the corrugated sheet assembly 6. The corrugated sheet unit 6 includes a main body 71, a light exit hole 72 vertically penetrating the main body 71, and a restricting portion 73 provided around the light exit hole 72. The light exit hole 72 and the light transmission hole 21 are vertically aligned, the flange 625 is fitted outside the restriction to restrict the corrugated sheet assembly 6 from excessively shifting in the horizontal direction, and a gap is formed between the flange 625 and the bottom surface of the main body portion 71 in the vertical direction. Of course, in other embodiments, the limiting portion 73 can be sleeved outside the flange 625.

As shown in fig. 1, the condenser lens 8 is located above the light-transmitting portion 61, and includes an external thread 81 matched with the internal thread 12, so that a user can replace the condenser lens 8 with different lines, and the use requirements of different covers of the user are met.

In summary, the projection apparatus of the present invention has the following advantages:

(1) The base 2 comprises a light-transmitting hole 21 and a limiting part 24 arranged around the light-transmitting hole 21, wherein the limiting part 24 comprises a base part 241 and a plurality of bump structures extending from the base part 241 and arranged at intervals; a corrugated sheet assembly 6 movably mounted on the base 2, wherein a gap is formed between the corrugated sheet assembly 3 and the base 241, the plurality of protruding point structures are arranged toward the corrugated sheet assembly 6, and friction between the limiting portion 24 and the corrugated sheet assembly 6 is reduced, and the corrugated sheet assembly 6 includes a light-transmitting portion 61 and a gear ring portion 62 arranged around the light-transmitting portion 61; a drive assembly 4 cooperating with said race portion 62.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all technical changes that can be made by applying the present specification and the drawings are included in the scope of the present invention.

Claims

1. A projection device, comprising:

the base comprises a light hole and a limiting part arranged around the light hole, wherein the limiting part comprises a base part and a plurality of bump structures extending from the base part and arranged at intervals;

the corrugated sheet assembly is movably arranged on the base, a gap is formed between the corrugated sheet assembly and the base, the plurality of salient point structures are arranged towards the corrugated sheet assembly, the friction force between the limiting part and the corrugated sheet assembly is reduced, and the corrugated sheet assembly comprises a light transmission part and a gear ring part arranged around the light transmission part;

the driving assembly is matched with the gear ring part and drives the corrugated sheet assembly to rotate;

and the light source assembly emits light which passes through the light transmission part and the light transmission hole.

2. A projection device as claimed in claim 1, characterized in that: the convex point structure is formed by a plurality of convex hulls extending upwards from the base, gaps are formed between the plurality of convex hulls and the corrugated sheet assembly in the vertical direction, and the plurality of convex hulls support the light transmission part or the gear ring part upwards.

3. The projection device of claim 1, wherein: the corrugated piece assembly comprises a rotating part which surrounds the light transmission part, the rotating part does circumferential motion relative to the limiting part, and the limiting part limits the corrugated piece assembly to excessively deviate in the horizontal direction.

4. A projection device as claimed in claim 3, wherein: the salient point structure is formed by a plurality of bulges extending from the base part to the rotating part, and at least part of the bulges are in contact with the rotating part in the horizontal direction.

5. A projection device as claimed in claim 3, wherein: the rotating part is arranged around the limiting part or the limiting part is arranged around the rotating part.

6. A projection device as claimed in claim 1, characterized in that: the projection lamp further comprises a limiting plate located above the corrugated sheet assembly, and the limiting plate is fixed on the base and limits the corrugated sheet assembly to move upwards.

7. A projection device as claimed in claim 6, wherein: the limiting plate comprises a light outlet hole penetrating through the upper surface and the lower surface of the limiting plate and a limiting portion surrounding the light outlet hole, the corrugated sheet assembly comprises a flange formed by upwards extending the light-transmitting portion or the gear ring portion, and the flange is arranged around the limiting portion or the limiting portion is arranged around the flange.

8. The projection apparatus according to claim 6 wherein: the light holes and the light outlet holes are aligned up and down.

9. The projection apparatus of any of claims 1 to 8, wherein: the projection device comprises an interference piece arranged in the light hole, and light emitted by the light source component sequentially penetrates through the interference piece and the light transmission part.

10. The projection apparatus of any of claims 1 to 8, wherein: the base includes around a plurality of fixed columns of ring gear portion setting, the limiting plate include a plurality of with fixed column one-to-one fixed coordination's fixed part.