Projection disc assembly

Abstract

The utility model discloses a projection disc assembly, comprising an upper projection disc comprising an outer tooth holder, a limiting seat arranged on the outer tooth holder and an upper projection sheet, the upper projection sheet comprising a first photoetching surface and a first non-photoetching surface which are oppositely arranged; the lower projection disc is matched with the upper projection disc, the lower projection disc comprises a positioning seat and a lower projection sheet mounted on the positioning seat, the lower projection sheet comprises a second photoetching surface and a second non-photoetching surface which are oppositely arranged, the first photoetching surface and the second photoetching surface are oppositely arranged, and the second non-photoetching surface is arranged on the first non-photoetching surface. The first non-photoetching surface and the second non-photoetching surface deviate from each other.

Description

[0001] The utility model relates to the technical field of projection disc assembly, especially relates to a projection disc assembly of double projection sheets.

[0002] The Chinese patent with patent No. CN202223172892.2 discloses a projection lamp with visual dynamic effect, which comprises a lamp body 100 and a support 200. The lamp body 100 is rotatably arranged on the support 200. The lamp body 100 comprises a shell 1, a base 2, a light source assembly 3 located in the shell 1, a focusing lens 4, a first projection sheet 5, a second projection sheet 6, a rotating driving assembly and a switching driving assembly. The shell 1 comprises a first part 1a located above the base 2 and a second part 1b located below the base 2. The focusing lens 4 is arranged at the top of the first part 1a. The light source assembly 3, the first projection sheet 5, the first projection sheet 5, the second projection sheet 6, the rotating driving assembly and the switching driving assembly are arranged on the base 2. In the first projection sheet 5 and the second projection sheet 6, the one driven to rotate by the rotating driving assembly is defined as a rotating sheet, and the other is defined as a fixed sheet. In this embodiment, the first projection sheet 5 is the rotating sheet, and the second projection sheet 6 is the fixed sheet. The fixed sheet is arranged on a second plug disc 9. A second plug hole 12 is arranged on the shell 1, and a second plug groove 22 corresponding to the second plug hole 12 is arranged on the base 2. The second plug disc 9 is inserted into the second plug groove 22.

[0003] However, the first projection sheet and the second projection sheet are independently arranged, and are inserted into the shell from different plug holes. The structure is complex, the cost is high, and the projection sheets are easy to be lost or confused with each other.

[0004] Therefore, it is necessary to redesign a new projection disc assembly to overcome the above problems.

[0005] In view of the problems in the background art, the utility model provides a projection disc assembly with compact structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A projection disc assembly comprises: an upper projection disc, which comprises an outer tooth seat, a limiting seat arranged on the outer tooth seat and an upper projection sheet. The upper projection sheet comprises a first light etching surface and a first non-light etching surface arranged oppositely. A lower projection disc is matched with the upper projection disc. The lower projection disc comprises a positioning seat and a lower projection sheet arranged on the positioning seat. The lower projection sheet comprises a second light etching surface and a second non-light etching surface arranged oppositely. The first light etching surface and the second light etching surface are arranged oppositely, and the first non-light etching surface and the second non-light etching surface are arranged oppositely.​​​

[0008] Further, the first light engraving surface and the second light engraving surface are mutually fitted.

[0009] Further, the gap between the first light engraving surface and the second light engraving surface is between 0 to 2mm.

[0010] Further, the limiting seat is buckled to the positioning seat, and the positioning seat constitutes the rotating central axis of the limiting seat.

[0011] Further, the outer tooth seat comprises a receiving groove recessed upward from the bottom surface thereof and an outer tooth part arranged around the receiving groove, the upper projection sheet is accommodated in the receiving groove and is located above the limiting seat, and the outer tooth seat is fixedly formed separately from the limiting seat or the outer tooth seat is integrally formed with the limiting seat.

[0012] Further, the limiting seat comprises a receiving hole and a limiting part extended from the hole wall of the receiving hole, the positioning seat comprises a through hole and a limiting ring arranged around the through hole, the positioning seat is accommodated in the receiving hole, the limiting part protrudes into the limiting ring, and the limiting part rotates around the positioning seat.

[0013] Further, the positioning seat comprises a bearing part connecting the side walls of the through hole, the lower projection sheet is downwardly installed in the through hole, the bearing part supports the lower projection sheet, and the upper projection sheet is arranged in alignment with the lower projection sheet in an up-down manner.

[0014] Further, the limiting ring is a limiting recess structure, the limiting part protrudes into the limiting recess, the limiting recess limits the up-down deviation of the limiting part, and the limiting seat rotates around the positioning seat.

[0015] Further, the projection disc assembly further comprises an insert disc, the insert disc comprises a recess, a light passing hole downwardly penetrating the bottom wall of the recess, and a plurality of clamping sites arranged around the light passing hole, and the positioning column comprises a clamping block matched with the clamping sites.

[0016] Further, the projection disc assembly further comprises an insert disc, the positioning seat is fixed to the insert disc, a motor is matched with the outer tooth seat to drive the rotation of the upper projection disc, and the positioning seat constitutes the rotating axis of the upper projection disc.

[0017] Compared with the prior art, the projection disc assembly has the following beneficial effects:

[0018] The projection disc assembly comprises a upper projection disc and a lower projection disc which are matched with each other, the upper projection disc comprises an outer tooth seat, a limiting seat installed on the outer tooth seat and an upper projection sheet, the upper projection sheet comprises a first light etching surface and a first non-light etching surface which are oppositely arranged, the lower projection disc comprises a positioning seat and a lower projection sheet installed on the positioning seat, the lower projection sheet comprises a second light etching surface and a second non-light etching surface which are oppositely arranged, the first light etching surface and the second light etching surface are oppositely arranged, and the first non-light etching surface and the second non-light etching surface are opposite to each other, the upper projection sheet and the lower projection sheet are installed on the same projection disc, the structure is simple, the projection disc is not lost, and the mismatch phenomenon of the moving sheet and the fixed sheet is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the projection disc assembly of the utility model;

[0020] Figure 2 It is a perspective view of the projection disc assembly of the utility model; Figure 1 It is a plan view;

[0021] Figure 3 It is a plan view; Figure 2 It is a sectional view along the cutting line A-A;

[0022] Figure 4 It is a plan view; Figure 3 It is a partial enlarged view of b;

[0023] Figure 5 It is a plan view; Figure 1 It is a perspective view after the shell is removed;

[0024] Figure 6 It is a plan view; Figure 5 It is a perspective view of the support seat, the first projection assembly and the driving assembly;

[0025] Figure 7 It is a plan view; Figure 6 It is a perspective exploded view;

[0026] Figure 8 It is a plan view; Figure 7 It is a perspective view of the support seat;

[0027] Figure 9 It is a plan view; Figure 5 It is a perspective view of the insert disc and the second projection disc;

[0028] Figure 10 It is a plan view; Figure 9 It is a perspective exploded view;

[0029] Figure 11 It is a plan view; Figure 10 It is a perspective exploded view of the second projection disc.

[0030] Explanation of reference numerals of specific embodiments:

[0031]

[0032]

Detailed Implementation Methods

[0033] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 11 As shown, the projection disk assembly 100 of this utility model includes a lamp holder 1, a heat dissipation assembly 2 installed on the lamp holder 1, a support base 3, a first projection assembly 4, a second projection assembly 5, a drive assembly 6, and a motor assembly 7.

[0035] like Figure 1 , Figure 3 and Figure 5 As shown, the lamp holder 1 includes a housing 11 and a base 12 mounted on the housing 11. The housing 11 includes a receiving cavity 111, a projection hole 112 communicating with the receiving cavity 111, a projection opening 113, multiple air outlets 114, and an opening 115. A flared opening (not shown) communicating with the receiving cavity 111 is also provided at the bottom of the housing 11, serving as an air inlet. The projection hole 112 and the projection opening 113 are both located on the upper surface of the housing 11, and the multiple air outlets 114 are arranged around the projection opening 113. The base 12 includes an upper seat and a lower seat fixed to each other, and a slot 121 formed by the lower seat and the upper seat. The upper seat and the lower seat are each provided with multiple heat dissipation grooves 122 penetrating their upper and lower surfaces. The slot 121 is aligned with and communicates with the opening 115.

[0036] like Figure 3 and Figure 5 As shown, the heat dissipation component 2 is housed in the receiving cavity 111 and is located below the second projection component 5. The heat dissipation component 2 includes a fan 21 and a heat sink 22 located above the fan 21. The air inlet is vertically aligned with the fan 21. After the fan 21 generates airflow that blows towards the heat sink 22, the airflow rises from all sides of the heat sink 22 and passes through the heat dissipation groove 122 before communicating with the outside through the air outlet 114.

[0037] like Figure 6 , Figure 8 and Figure 9As shown, the support base 3 is fixedly installed on the shell 11. The support base 3 comprises a through hole 31, a limiting shaft 32 arranged around the through hole 31, a limiting groove 33, and a support portion 36 extending outward from the side wall of the limiting groove 33. The limiting shaft 32 comprises a plurality of limiting hooks 321 arranged at intervals, and the limiting hooks 321 are arranged away from the center of the through hole 31. The plurality of limiting hooks 321 are arranged higher than the support portion 36. The limiting groove 33 is located below the support portion 36, and the side wall of the limiting groove 33 connects the support portion 36 and the limiting shaft 32. The support base 3 further comprises a notch 34 and a gap 34 which penetrate downward through the bottom wall of the limiting groove 33. Each of the gaps 34 is located below one of the limiting hooks 321. The support portion 36 comprises a limiting portion 361 arranged around the limiting shaft 32 and a light-transmitting hole 362 penetrating upward through the limiting portion 361, and the light-transmitting hole 362 penetrates upward through the limiting portion 361.

[0038] As Figure 4 , Figure 6 and Figure 7As shown, the first projection assembly 4 comprises a first light source 41, a light distribution lens group 42 above the first light source 41, a first projection disc 43, and a first lens 44. The light distribution lens group 42 comprises at least a light collecting lens. That is, the light emitted by the first light source 41 is more concentrated after passing through the light collecting lens, and then becomes parallel light after passing through the collimating lens 522. The first projection disc 43 comprises a clearance hole 431 penetrating through the upper and lower surfaces thereof, a main body portion 432 arranged around the clearance hole 431, and a rotating shaft portion 44. The main body portion 432 comprises a plurality of projection grooves 4321 arranged around the clearance hole 431 and a first projection sheet 4322 exposed to the projection grooves 4321. The wind blown by the fan 21 flows to the first projection sheet 4322 and then to the air outlet 114 after passing through the heat dissipation grooves 122. The limiting hooks 321 downwardly engage with the edges of the main body portion 432 to block the upward movement of the main body portion 432. Of course, it can also be expressed that the support seat 3 at least partially protrudes upwardly into the clearance hole 431. The rotating shaft portion 44 extends downwardly from the main body portion 432, and the lower end of the rotating shaft portion 44 forms a gear ring 441. The rotating shaft portion 44 is accommodated in the limiting groove 33, and there is a gap between the gear ring 441 and the bottom wall of the limiting groove 33. At least part of the gear ring 441 is exposed downwardly to the gap 34, and the driving assembly 6 cooperates with the gear ring 441. The first lens 44 is located above the first projection disc 43. The first lens 44 comprises a fixing frame 441 and at least one first lens 442 mounted on the fixing frame 441. The fixing frame 441 comprises a horizontal section and a vertical section extending downwardly from the horizontal section. The first lens 442 is mounted on the horizontal section, and the vertical section is fixed to the support portion 36. The horizontal section inhibits the upward deviation of the first projection disc 43. In this embodiment, the first lens 44 comprises a plurality of first lenses 442, and the plurality of first lenses 442 at least comprise imaging lenses, adjusting lenses, etc.

[0039] As Figure 4 , Figure 10 and Figure 11As shown, the second projection assembly 5 comprises at least a second light source 51, at least a light distribution lens set 52 above the second light source 51, an insert disc 53, an upper projection disc 54 and a second lens 56. In the embodiment, the light distribution lens set 52 comprises a light collecting lens 521 and a collimating lens 522, which are sequentially arranged from bottom to top, and correspondingly function as light collecting and collimating light. The insert disc 53 is movably inserted into the slot 121 along the opening 115 and is above the light distribution lens set 52. The insert disc 53 comprises a recess 531, a light passing hole 532 penetrating the bottom wall of the recess 531 and a plurality of heat dissipation holes 534, and a plurality of clamping sites 533 arranged around the light passing hole 532. The plurality of heat dissipation holes 534 are arranged around the light passing hole 532. The insert disc 53 further comprises a blocking ring 535 arranged around the light passing hole 532, and the central axis of the blocking ring 535 is not coincident with the central axis of the light passing hole 532. The upper projection disc 54 comprises an outer tooth seat 541, an upper projection sheet 543 mounted on the outer tooth seat 541, a limiting seat 542 and a fastener 544. The outer tooth seat 541 comprises a receiving groove 5411 concavely formed upward from the bottom surface thereof and an outer tooth portion 5412 arranged around the receiving groove 5411. The limiting seat 542 is received in the receiving groove 5411. The limiting seat 542 comprises a receiving hole 5421 and a limiting portion 5422 extending from the hole wall of the receiving hole 5421. The upper projection sheet 543 is received in the receiving groove 5411 and is above the limiting seat 542. The fastener 544 fixedly connects the outer tooth seat 541 and the limiting seat 542. In the embodiment, the second projection assembly 5 further comprises a lower projection disc 55. The lower projection disc 55 comprises a positioning seat 551 and a lower projection sheet 552 mounted on the positioning seat 551. The positioning seat 551 comprises a through hole 5511, a limiting ring 5512 arranged around the through hole 5511, a bearing portion 5513 connected to the side wall of the through hole 5511 and a plurality of clamping blocks 5514. The lower projection sheet 552 is downwardly mounted on the through hole 5511, the bearing portion 5513 supports the lower projection sheet 552, and the lower projection sheet 552 is exposed downwardly from the light passing hole 532. The clamping blocks 5514 are one-to-one correspondingly received in the clamping sites 533. The lower projection sheet 552 is flush with the top surface of the positioning seat 551. The lower projection sheet 552 is arranged in alignment with the light passing hole 532. The positioning seat 551 is received in the receiving hole 5421, and the limiting portion 5422 protrudes into the limiting ring 5512. In the embodiment, the limiting ring 5512 is a limiting recess structure, i.e., the limiting portion 5422 protrudes into the limiting recess, the limiting recess limits the upward and downward deviation of the limiting portion 5422, and the limiting seat 542 rotates around the positioning seat 551, i.e., the positioning seat 551 constitutes the rotation central axis of the upper projection disc 54.The limiting seat 542 is composed of two semicircular rings and is installed in the horizontal direction on the positioning seat 551. The motor assembly 7 is arranged upside down from top to bottom, and is accommodated between the first projection disc 4 and the second projection disc 5. The motor assembly 7 cooperates with the outer tooth portion 5412 to drive the upper projection sheet 543 to rotate, and the lower projection sheet 552 is static, and the projection pattern of the upper projection sheet 543 and the projection pattern of the lower projection sheet 552 cut each other. The lower projection sheet 552 is arranged in alignment with the upper projection sheet 543. The lower projection sheet 552 and the upper projection sheet 543 each include oppositely arranged photoetching surfaces and non-photoetching surfaces, and the photoetching surface of the upper projection sheet and the photoetching surface of the lower projection sheet 552 are oppositely arranged. The photoetching surface of the upper projection sheet 543 and the photoetching surface of the lower projection sheet 552 are mutually adhered or a gap therebetween is between 0 and 2 mm. The photoetching surface of the upper projection sheet 543 and the non-photoetching surface are defined as a first photoetching surface and a first non-photoetching surface, and the photoetching surface and the non-photoetching surface of the lower projection sheet 552 are defined as a second photoetching surface and a second non-photoetching surface. The upper projection sheet 543 and the lower projection sheet 552 are selected from glass sheets, film sheets or metal sheets, etc. When the upper projection sheet 543 or the lower projection sheet 552 is a glass projection sheet, the thickness of the glass projection sheet is 0.2 mm to 1.5 mm. The forming process of the glass projection sheet is to electroplate a metal film on a transparent glass sheet, and then remove the metal film of the part needing to transmit light through a photoetching machine to form the above-mentioned glass projection sheet. The outer tooth seat 541 is integrally or separately formed with the limiting seat 542. The lower projection disc 55 and the upper projection disc 54 jointly constitute a second projection disc, which is accommodated in the recess 531 and located below the accommodation hole 431. The recess 531 also satisfies the accommodation of another eccentric projection disc, which is limited by the blocking ring 535. The second lens 56 is located above the upper projection disc 54, and the second lens 56 passes through the accommodation hole 431 upwardly and is exposed upwardly on the projection port 113. There is a moving space between the second lens 56 and the hole wall of the accommodation hole 431. The projection included angle range formed by the second lens 56 is 60° to 180°. The second lens 56 includes at least one second lens 561, and in this embodiment, the second lens 56 includes a plurality of second lenses 561. The second lens 561 is an imaging lens, and the surface of at least one of the second lenses 561 is provided with an anti-reflection film to reduce light reflection on the surface of the second lens 561. The width of the second lens 561 is defined as D, and the distance between the upper projection sheet 543 and the second lens 561 in the up-down direction is between 1 / 4D and 5 / 4D, preferably between 1 / 2D and D. When the distance is between 1 / 4D and 5 / 4D, under the condition of the same cost, the utilization rate of the second light source 51 is higher and the projection brightness is higher while ensuring the projection clarity of the upper projection sheet 543.

[0040] As Figure 1 shown, the projection disc assembly 100 further comprises a base 8 located below the lamp holder 1. The base 8 comprises a base 81 and a support rod 82 connected to the base 81, the bottom end of the support rod 82 is fixed to the base 81, and the top end is movably connected to the lamp holder 1. The lamp holder 1 swings relative to the support rod 82 to change the projection angle. At this time, the lamp holder 1 is only movably connected to the support rod 82, and there is a gap between the lamp holder 1 and the base 81. A plurality of said horn holes are arranged opposite to the base 8, and there is a gap between the plurality of said horn holes and the base 8.

[0041] In summary, the projection disc assembly has the following advantages:

[0042] (1) The projection disc assembly comprises a upper projection disc 54 and a lower projection disc 55, the upper projection disc 54 comprises an outer tooth seat 5412, a limiting seat 5422 installed on the outer tooth seat 5412, and an upper projection sheet 543, the upper projection sheet 543 comprises a first light etching surface and a first non-light etching surface arranged opposite to each other; the lower projection disc 55 comprises a positioning seat 551 and a lower projection sheet 552 installed on the positioning seat 551, the lower projection sheet 552 comprises a second light etching surface and a second non-light etching surface arranged opposite to each other, the first light etching surface and the second light etching surface are arranged opposite to each other, and the first non-light etching surface and the second non-light etching surface are arranged opposite to each other. The upper projection sheet 543 and the lower projection sheet 552 are installed on the same projection disc, the structure is simple, and the loss is prevented. The mismatch phenomenon of the moving sheet and the fixed sheet is prevented.

[0043] The above detailed description is only a description of the preferred embodiment of the utility model, and does not limit the patent range of the utility model, therefore, any equivalent technical changes made according to the content of the description and drawings are included in the patent range of the utility model.

Claims

1. A projection disc assembly, comprising: The application relates to a projection disc assembly. The upper projection disc comprises an outer tooth base, a limiting base fixed on the outer tooth base and an upper projection sheet, the upper projection sheet comprises a first light etching surface and a first non-light etching surface arranged oppositely. The lower projection disc is matched with the upper projection disc, the lower projection disc comprises a positioning base and a lower projection sheet fixed on the positioning base, the lower projection sheet comprises a second light etching surface and a second non-light etching surface arranged oppositely, the first light etching surface is arranged oppositely to the second light etching surface, and the first non-light etching surface is arranged oppositely to the second non-light etching surface.

2. The projection disc assembly of claim 1, wherein: The first light etching surface is matched with the second light etching surface.

3. The projection disc assembly of claim 1, wherein: The gap between the first light etching surface and the second light etching surface is 0-2mm.

4. The projection disc assembly of claim 1, wherein: The limiting base is buckled on the positioning base, and the positioning base constitutes the rotating central axis of the limiting base.

5. The projection disc assembly of claim 4, wherein: The outer tooth base comprises a receiving groove formed by being concave upward from the bottom surface of the outer tooth base and an outer tooth part arranged around the receiving groove, the upper projection sheet is received in the receiving groove and is arranged above the limiting base, and the outer tooth base is fixedly formed separately from the limiting base or the outer tooth base is integrally formed with the limiting base.

6. The projection disc assembly of claim 5, wherein: The limiting base comprises a receiving hole and a limiting part extended from the hole wall of the receiving hole, the positioning base comprises a through hole and a limiting ring arranged around the through hole, the positioning base is received in the receiving hole, the limiting part protrudes into the limiting ring, and the limiting part rotates around the positioning base.

7. The projection disc assembly of claim 6, wherein: The positioning base comprises a bearing part connecting the side walls of the through hole, the lower projection sheet is fixed downward on the through hole, the bearing part supports the lower projection sheet, and the upper projection sheet is arranged in alignment with the lower projection sheet.

8. The projection disc assembly of claim 6, wherein: The limiting ring is a limiting recess structure, the limiting part protrudes into the limiting recess, the limiting recess limits the up-down deviation of the limiting part, and the limiting base rotates around the positioning base.

9. The projection disc assembly of any one of claims 1-8, wherein: The projection disc assembly further comprises an inserting disc, the inserting disc comprises a groove, a light passing hole penetrating downward through the bottom wall of the groove and a plurality of clamping positions arranged around the light passing hole, and the positioning base comprises a clamping block matched with the clamping positions.

10. The projection disc assembly of any one of claims 1-8, wherein: The projection disc assembly further comprises an inserting disc, the positioning base is fixed on the inserting disc, a motor is matched with the outer tooth base to drive the rotation of the upper projection disc, and the positioning base constitutes the rotating central axis of the upper projection disc.

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