CN113093507B

CN113093507B - Hollow projection clock

Info

Publication number: CN113093507B
Application number: CN202110246732.9A
Authority: CN
Inventors: 张明
Original assignee: Plus Minus One Advanced Technology Shenzhen Co ltd
Current assignee: Plus Minus One Advanced Technology Shenzhen Co ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2022-09-06
Anticipated expiration: 2041-03-05
Also published as: CN113093507A

Abstract

The invention discloses a hollow projection clock. The projection clock comprises a shell, a first hour hand gear, a second hour hand gear, a first minute hand gear and a second minute hand gear. The first hour hand gear and the second hour hand gear are respectively provided with a first hour hand light-emitting piece and a second hour hand light-emitting piece which respectively emit first hour hand light and second hour hand light and are used for indicating the position of an hour hand. The first minute hand gear and the second minute hand gear are provided with a first minute hand light-emitting piece and a second minute hand light-emitting piece respectively, and the first minute hand light-emitting piece and the second minute hand light-emitting piece respectively emit a first minute hand light and a second minute hand light and are used for indicating minute hand positions. The projection clock provided by the invention indicates time through the first hour light, the second hour light, the first minute light and the second minute light without additionally arranging a physical pointer, so that the structure is simplified, and a user can still clearly see the time when the light is dim.

Description

Hollow projection clock

Technical Field

The invention relates to the technical field of electronic products, in particular to a hollow projection clock.

Background

Clocks are one of the most widely used consumer electronics products in daily life. With the continuous development of technology, the expectation and the requirement of users on clocks are higher and higher. The positions of an hour hand and a minute hand cannot be clearly seen at night by the conventional clock, and the hour hand and the minute hand are generally irradiated by an additional light source to enable a user to clearly see the time, so that the structural complexity of the clock is increased, and the cost of the clock is increased.

Disclosure of Invention

The invention aims to provide a hollow projection clock, which solves the problem that a user cannot clearly see the time indicated by the projection clock when the conventional projection clock is at night or in dim light.

In order to solve the above problems, the present invention provides a hollow projection clock, which includes a housing, a first hour hand gear, a second hour hand gear, a first minute hand gear and a second minute hand gear. The casing includes accommodating space, first hour hand gear, second hour hand gear, first minute hand gear and second minute hand gear all locate in the accommodating space. The first time needle gear is provided with a first time needle light-emitting piece, and the first time needle light-emitting piece emits first time needle light rays which are emitted towards the center of the shell. And a second hour hand light-emitting piece is arranged on the second hour hand gear, the first hour hand light-emitting piece emits first hour hand light rays which are emitted out of the shell, and the first hour hand light rays and the second hour hand light rays are used for indicating the position of an hour hand. The first hour hand gear and the second hour hand gear rotate so that the positions of the first hour hand light and the second hour hand light are changed. The first minute hand is equipped with the first minute hand light-emitting component on the first minute hand gear, the first minute hand light-emitting component sends towards the first minute hand light that the casing center jetted out. Be equipped with the second on the second minute hand gear and divide the needle illuminating part, the second divides the needle illuminating part to send the orientation the second that jets out outside the casing divides the needle light, first minute hand light with second divides the needle light to be used for the instruction to divide the needle position. The first minute hand gear and the second minute hand gear both rotate to make the position of the first minute hand light and the second minute hand light change. The hour hand position and the minute hand position change to indicate time together.

In a possible embodiment, the housing includes an inner wall and an outer wall, and the inner wall and the outer wall are spaced apart to enclose the accommodating space. The first hour hand light and the first minute hand light are emitted from the inner wall and emitted to the center of the shell, and the second hour hand light and the second minute hand light are emitted from the outer wall.

In a possible implementation manner, the projection clock further includes a power supply, a main control board and a driving member, and the power supply, the main control board and the driving member are all disposed in the accommodating space. The main control board is connected with the power supply, and the driving piece is connected with the main control board. The power supply is used for supplying power to the main control board, and the main control board is used for controlling the driving piece to rotate. The driving piece is used for driving the first time hand gear and the first minute hand gear to rotate so as to drive the first time hand luminous piece and the first minute hand luminous piece to rotate. The driving piece is further used for driving the second hour hand gear and the second minute hand gear to rotate so as to drive the second hour hand luminous piece and the second minute hand luminous piece to rotate.

In one possible embodiment, the drive member comprises an electric motor, a drive gear, a first gear set and a second gear set. The motor is connected with the driving gear, and the driving gear is meshed with the first gear set and the second gear set. The motor drives the driving gear to rotate, and the driving gear drives the first gear set and the second gear set to rotate. The first gear set rotates to drive the first hour hand gear and the first minute hand gear to rotate, and the second gear set rotates to drive the second hour hand gear and the second minute hand gear to rotate.

In one possible embodiment, the first gear set includes a first sub-gear and a second sub-gear. The first sub gear is meshed with the first hour hand gear, and the second sub gear is meshed with the first minute hand gear. The first sub gear and the second sub gear are coaxially arranged at intervals and coaxially rotate. The driving gear is meshed with any one of the first sub gear and the second sub gear.

In one possible embodiment, the second gear set comprises a steering gear, a third sub-gear and a fourth sub-gear. The third sub gear is meshed with the second hour hand gear, and the fourth sub gear is meshed with the second minute hand gear. The third gear and the fourth gear are coaxially arranged at intervals and coaxially rotate. The drive gear is engaged with the steering gear, and the steering gear is engaged with any one of the third sub-gear and the fourth sub-gear.

In one possible embodiment, the projection clock further includes a power supply member, a first conductive member, a second conductive member, a third conductive member, and a fourth conductive member. The power supply part is accommodated in the accommodating space, and one end of each of the first conductive part, the second conductive part, the third conductive part and the fourth conductive part is connected with the power supply part or the main control board. The other end of the first conductive piece is connected with the first hour hand luminous piece, the other end of the second conductive piece is connected with the first minute hand luminous piece, the other end of the third conductive piece is connected with the second hour hand luminous piece, and the other end of the fourth conductive piece is connected with the second minute hand luminous piece.

In one possible embodiment, the projection clock further comprises an adjustment member, which is rotated to generate an adjustment signal. The adjusting part is used for receiving the adjusting signal and transmitting the adjusting signal to the main control board. The main control board is used for adjusting the positions and angles of the first hour hand luminous piece, the first minute hand luminous piece, the second hour hand luminous piece and the second minute hand luminous piece according to the adjusting signal. Or the main control board is used for adjusting the brightness of the first hour hand light, the first minute hand light, the second hour hand light and the second minute hand light according to the adjusting signal.

In a possible implementation manner, the projection clock further includes a detection piece, the detection piece is disposed on the housing, and the detection piece is connected with the main control board. The detection piece is used for detecting the rotating speed of the first hour hand gear, or the second hour hand gear, or the first minute hand gear, or the second minute hand gear to generate detection data, and the detection data is transmitted to the main control board, and the main control board is used for adjusting the rotating speed of the first hour hand gear, the second hour hand gear, the first minute hand gear and the second minute hand gear according to the detection data.

In one possible embodiment, the projection clock further includes a first second hand gear and a second hand gear, and both the first second hand gear and the second hand gear are disposed in the housing space. The first second hand gear is provided with a first second hand light emitting member, and the first second hand light emitting member emits a first second hand light ray emitted toward the center of the housing. A second hand light emitting member is provided on the second hand gear, the second hand light emitting member emits a second hand light ray emitted toward the outside of the housing, and the first second hand light ray and the second hand light ray are used for indicating a second hand position. The first second hand gear and the second hand gear both rotate to change positions of the first second hand light and the second hand light.

In a possible embodiment, the first hour hand light emitting piece, the first minute hand light emitting piece, the second hour hand light emitting piece and the second minute hand light emitting piece each include a light emitting portion and an imaging portion, and the light emitting portion emits light to the outside of the housing through the imaging portion.

In a possible embodiment, the housing includes a top cover, the top cover covers the inner wall and the outer wall, the top cover is provided with time scales, and the top cover is further configured to display parameters of the projection clock.

In summary, the invention provides a hollow projection clock, wherein the hour hand gear and the minute hand gear of the projection clock are respectively provided with a light emitting element, and the hour hand gear and the minute hand gear rotate to drive the light emitting element to rotate, so that the light emitting elements indicate time together. The additional physical pointer is not required to be arranged on the projection clock, the structure of the projection clock is simplified, a user can clearly see the time at night or under the condition of dim light, and meanwhile, the attractiveness and artistic feeling of the projection clock are improved. In addition, the projection clock provided by the invention can also be combined with the technology of everything interconnection, after an intelligent module is arranged in the projection clock to detect the surrounding environment parameters, the state of the projection clock, such as the display time and the light beam parameters, is adjusted or is provided for an internet of things system to trigger an external intelligent device.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a projection clock according to the present invention;

FIG. 2 is an exploded view of the projection clock of FIG. 1;

FIG. 3 is a partial cross-sectional view of the projection clock of FIG. 1 taken along direction A-A;

FIG. 4 is a schematic diagram of a portion of the projection clock of FIG. 1;

FIG. 5 is an enlarged schematic view of a driver in the projection clock of FIG. 1;

FIG. 6 is a partial cross-sectional view of the projection clock of FIG. 1 taken along direction B-B;

FIG. 7 is an enlarged schematic view of a portion of the projection clock of FIG. 1;

fig. 8 is a schematic structural diagram of a projection clock according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a hollow projection clock 100. The projection clock 100 uses two or three light-beam needles capable of moving continuously and projection scales to indicate time, and can replace the physical hand and dial of the traditional clock. The projection clock 100 is fixed on the background surface and integrated with the background surface to create a new clock representation and effect. In addition, projection clock 100 can combine everything interconnection technology, and inside increase intelligent sensor, inductor, intelligent module etc. detect and monitor its surrounding environment parameter after, adjust self state, like the accuracy of display time, light beam parameter etc.. Or the intelligent control system is provided for an internet of things system to trigger other intelligent devices, such as a human body sensor, a light sensor, a temperature and humidity sensor, a gas detector (natural gas, formaldehyde, carbon monoxide and the like), an air quality sensor (PM2.5, microorganism detection and the like), a smoke alarm, a voice control and the like.

The projection clock 100 includes, but is not limited to, a watch, a clock, a display, a mobile phone, a tablet Computer, a notebook Computer, a palmtop Computer, a Personal Computer (PC), a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and other mobile terminals, and fixed terminals such as a Digital TV, a desktop Computer, and the like. Alternatively, the projection clock 100 will be described as a timepiece hereinafter.

Referring to fig. 1-3, the projection clock 100 includes a housing 10, a first hour wheel 21, a second hour wheel 31, a first minute wheel 22 and a second minute wheel 32, the housing 10 includes an accommodating space 18, and the first hour wheel 21, the second hour wheel 31, the first minute wheel 22 and the second minute wheel 32 are all disposed in the accommodating space 18.

The first hour hand gear 21 is provided with a first hour hand light-emitting member 24, and the first hour hand light-emitting member 24 emits a first hour hand light 243 (as shown in fig. 6) emitted toward the outside of the housing 10. The second hour hand gear 31 is provided with a second hour hand light emitting member 34, and the second hour hand light emitting member 24 emits a second hour hand light ray 313 emitted toward the center of the casing 10. The first hour light ray 243 and the second hour light ray 313 are used for indicating the position of the hour hand. Both the first hour hand gear 21 and the second hour hand gear 31 rotate to change the positions of the first hour hand ray 243 and the second hour hand ray 313.

The first minute hand gear 22 is provided with a first minute hand light emitting member 25, and the first minute hand light emitting member 25 emits a first minute hand light emitted toward the outside of the housing 10. The second minute hand gear 32 is provided with a second minute hand light emitting member 35, and the second minute hand light emitting member 35 emits a second minute hand light emitted toward the center of the housing 10. The first minute hand light ray and the second minute hand light ray are used for indicating the minute hand position. The first minute hand gear 22 and the second minute hand gear 32 are both rotated to change the positions of the first minute hand light and the second minute hand light. The hour hand position and minute hand position change to collectively indicate time.

The projection clock 100 provided by the application can indicate time only through light, and an extra physical pointer is not required to be arranged on the projection clock 100, so that the structure of the projection clock 100 is simplified, and the user can clearly see the time at night or under the condition of dim light. At the same time, the aesthetic and artistic feel of the projection clock 100 is also increased.

Optionally, in this embodiment, the projection clock 100 further includes a first second hand gear 23 and a second hand gear 33, the first second hand gear 23 and the second hand gear 33 are both disposed in the accommodating space 18, the first second hand gear 23 is provided with a first second hand light-emitting member 26, and the first second hand light-emitting member 26 emits a first second hand light 263 that is emitted toward the outside of the housing 10. The second hand gear 33 is provided with a second hand light emitting element 36, and the second hand light emitting element 36 emits a second hand light 333 emitted toward the center of the casing 10. First second hand light 263 and second hand light 333 are used to indicate the second hand position. Both first second hand gear 23 and second hand gear 33 rotate to change the positions of first second hand ray 263 and second hand ray 333.

Specifically, referring to fig. 1 and 2, the housing 10 includes an inner wall 11 and an outer wall 12 surrounding the inner wall 11, wherein the inner wall 11 and the outer wall 12 are spaced apart from each other to define a receiving space 18. The housing 10 further includes a loading plate 13 and a top cover 14, the loading plate 13 is located at one end of the inner wall 11 and the outer wall 12 and is connected between the inner wall 11 and the outer wall 12, the top cover 14 is located at the other end of the inner wall 11 and the outer wall 12 and covers the inner wall 11 and the outer wall 12 relative to the loading plate 13 to close the accommodating space 18.

In one embodiment, inner wall 11 and outer wall 12 are both annular and projection clock 100 has an annular appearance. The outer diameter is 20 cm-50 cm, the inner diameter is 15-30 cm, and the height is 2 cm-10 cm. In other embodiments, the outer diameter of projection clock 100 may be less than 20cm or greater than 50cm, the inner diameter of projection clock 100 may be less than 15cm or greater than 30cm, and the height of projection clock 100 may be less than 2cm or greater than 10 cm. The "outer diameter" herein means the diameter of the ring formed by the outer wall 12, and the "inner diameter" herein means the diameter of the ring formed by the inner wall 11. Projection clock 100 is mounted on a carrier, which may be a wall or ceiling, etc.

Referring to fig. 3 and 4, the first hour wheel 21, the first minute wheel 22 and the first second wheel 23 are stacked and housed in the housing 10 to form outer ring gears, which are all ring-shaped and located on the side close to the outer wall 12. The second hour hand gear 31, the second minute hand gear 32, and the second hand gear 33 are stacked and housed in the casing 10 to form inner ring gears, which are all annular and located on the side close to the inner wall 11. The outer ring gear and the inner ring gear are arranged in the accommodating space 18 at intervals, and a gap is formed between the outer ring gear and the inner ring gear. The inner ring gear and the outer ring gear can be made of plastic or metal materials. In this application, inner circle gear and outer lane gear are the metalwork.

The projection clock 100 includes an external connection (not shown) connected to the main control board. The external connection is used for connecting with an external power supply, so as to supply power to the projection clock 100 in real time. The external connection line may be exposed outside the projection clock 100 or may extend from the projection clock 100 into the carrier.

Referring to fig. 4, the projection clock 100 further includes a power source 16, and the power source 16 is disposed on the carrier plate 13 and located in the accommodating space 18. Power supply 16 is used to provide power to projection clock 100. In this embodiment, the power source 16 is a battery.

Referring to fig. 4, the projection clock 100 further includes a charging port 19, the charging port 19 is disposed on the housing 10, and the charging port 19 is electrically connected to the battery. When the battery is a rechargeable battery, the charging port 19 can be connected with an external power supply 16, and the battery is charged through the charging port 19, so that the replacement of the battery is reduced, and the functions of convenience in use and resource saving are achieved. In other embodiments, the charging port 19 may also be directly electrically connected to a circuit board in the projection clock 100, and the external power source 16 supplies power to the circuit board in real time through the charging board to ensure that the projection clock 100 operates normally. Here, the type of the charging port 19 is not particularly limited. In this embodiment, the charging port 19 is a Type C charging port 19, and in other embodiments, the charging port 19 may be a USB charging port 19 or any other charging port 19 that can be electrically connected to the external power source 16.

In another embodiment of the present application, projection clock 100 may include both external wiring and power supply 16. The external connection is connected to an external power source for supplying power to the projection clock 100 in real time. The power supply 16 is used to temporarily supply power to the projection clock 100 when the external wiring is disconnected from the external power supply.

Referring to fig. 2 to 4, the projection clock 100 further includes a main control board 40 and a driving member 50, the main control board 40 and the driving member 50 are both disposed in the accommodating space 18, the main control board 40 is connected to the power source 16, the driving member 50 is connected to the main control board 40, the power source 16 is used for supplying power to the main control board 40, the main control board 40 is used for controlling the driving member 50 to rotate, the driving member 50 is used for driving the first hour hand gear 21 and the first minute hand gear 22 to rotate so as to drive the first hour hand light emitting member 24 and the first minute hand light emitting member 25 to rotate, and the driving member 50 is further used for driving the second hour hand gear 31 and the second minute hand gear 32 to rotate so as to drive the second hour hand light emitting member 34 and the second minute hand light emitting member 35 to rotate.

Further, when projection clock 100 includes first second hand gear 23 and second hand gear 33, drive member 50 is also used to drive first second hand gear 23 and second hand gear 33 to rotate.

Specifically, referring to fig. 5, the driving member 50 includes a motor 51, a driving gear 52, a first gear set 53 and a second gear set 54, the motor 51 is connected to the driving gear 52, the driving gear 52 is engaged with the first gear set 53 and the second gear set 54, the motor 51 drives the driving gear 52 to rotate, the driving gear 52 drives the first gear set 53 and the second gear set 54 to rotate, the first gear set 53 rotates to drive the first hour hand gear 21 and the first minute hand gear 22 to rotate, and the second gear set 54 rotates to drive the second hour hand gear 31 and the second minute hand gear 32 to rotate.

The electric machine 51 includes, but is not limited to, a motor or the like. In this embodiment, the motor 51 is a motor. The motor 51 is fixed to the carrier plate 13 between the inner ring gear and the outer ring gear. The driving gear 52 is rotatably connected to the motor 51, and the motor 51 drives the driving gear 52 to rotate. The number of the motors 51 may be one or more. The drive gear 52 may also be one or more. In one embodiment, there are two motors 51 and two drive gears 52, and one drive gear 52 is provided for each motor 51. One of the driving gears 52 is engaged with the first gear set 53 to drive the first gear set 53 to rotate, and the other driving gear 52 is engaged with the second gear set 54 to drive the second gear set 54 to rotate. In this embodiment, there is one motor 51 and one driving gear 52, the first gear set 53 and the second gear set 54 are respectively located at two opposite sides of the driving gear 52, and the driving gear 52 simultaneously drives the first gear set 53 and the second gear set 54 to rotate. The main control board 40 is provided with a crystal oscillator, and the crystal oscillator outputs a stable signal to control the operation of the motor 51 and increase the stability of the operation of the motor 51.

Specifically, the first gear set 53 includes a first sub gear 531 and a second sub gear 532, the first sub gear 531 is engaged with the first hour hand gear 21, the second sub gear 532 is engaged with the first minute hand gear 22, the first sub gear 531 and the second sub gear 532 are coaxially spaced and coaxially rotate, and the driving gear 52 is engaged with any one of the first sub gear 531 and the second sub gear 532. In this embodiment, the first gear set 53 further includes a fifth sub-gear 533, the fifth sub-gear 533 is engaged with the first second hand gear 23, and the fifth sub-gear 533 is spaced apart from the first sub-gear 531 and the second sub-gear 532 and rotates coaxially therewith.

In the present embodiment, the drive gear 52 is meshed with the fifth sub-gear 533. In other embodiments, the drive gear 52 may also mesh with the first sub-gear 531 or the second sub-gear 532. The motor 51 drives the driving gear 52 to rotate, and the driving gear 52 rotates to drive the fifth sub-gear 533 to rotate, thereby driving the first sub-gear 531 and the second sub-gear 532 coaxially arranged with the fifth sub-gear 533 to rotate. The fifth sub-gear 533 rotates to drive the first second hand gear 23 to rotate, the second sub-gear 532 rotates to drive the first minute gear 22 to rotate, and the first sub-gear 531 rotates to drive the first hour hand gear 21 to rotate. Thereby rotating the first second hand light emitting member 26, the first minute hand light emitting member 25 and the first time hand light emitting member 24.

In the present embodiment, the transmission speed ratio of the first sub-gear 531, the second sub-gear 532, and the fifth sub-gear 533 is 1:12: 720. the "transmission speed" referred to herein means a speed at which the first sub-gear 531 transmits to the first hour gear 21, a speed at which the second sub-gear 532 transmits to the first minute gear 22, or a speed at which the fifth sub-gear 533 transmits to the first second minute gear 23. That is, the first time gear 21, the first minute gear 22 and the first second hand gear 23 rotate at an angular velocity ratio of 1:12:720, and when the first time gear 21 rotates at 30 °, the first minute gear 22 rotates at 360 °, the first second hand gear 23 rotates at 21600 °, and the time goes over 1 hour. The transmission speed of the gears is closely related to the module of the gears, and the module of the first sub-gear 531, the module of the second sub-gear 532 and the module of the fifth sub-gear 533 are adjusted by adjusting the number or pitch of the teeth of the first sub-gear 531, the second sub-gear 532 and the fifth sub-gear 533, so that the transmission speed ratio of the first sub-gear 531, the second sub-gear 532 and the fifth sub-gear 533 reaches a set value.

With reference to fig. 5, the second gear set 54 includes a steering gear 541, a third sub-gear 542 and a fourth sub-gear 543, the third sub-gear 542 is meshed with the second hour hand gear 31, the fourth sub-gear 543 is meshed with the second minute hand gear 32, the third sub-gear 542 and the fourth sub-gear 543 are coaxially spaced and rotate coaxially, the driving gear 52 is meshed with the steering gear 541, and the steering gear 541 is meshed with one of the third sub-gear 542 and the fourth sub-gear 543. In this embodiment, the second gear set 54 further includes a sixth sub-gear 544, the sixth sub-gear 544 is engaged with the second seconds hand gear 33, and the sixth sub-gear 544 is disposed to rotate coaxially with the third sub-gear 542 and the fourth sub-gear 543.

The steering gear 541 includes a first steering gear 541A and a second steering gear 541B, and the first steering gear 541A and the second steering gear 541B are coaxially fixed. The drive gear 52 meshes with a first steering gear 541A, and the second steering gear 541B meshes with a sixth sub-gear 544. The motor 51 drives the driving gear 52 to rotate, so as to drive the first steering gear 541A to rotate, and thus drive the second steering gear 541B, which is coaxial with the first steering gear 541A, to rotate. The second steering gear 541B rotates to rotate the sixth sub-gear 544, thereby rotating the third sub-gear 542 and the fourth sub-gear 543, which are coaxial with the sixth sub-gear 544. The third sub-gear 542 rotates to drive the second hour hand gear 31 to rotate, the fourth sub-gear 543 rotates to drive the second minute gear 32 to rotate, and the sixth sub-gear 544 rotates to drive the second seconds hand gear 33 to rotate, thereby driving the second hour hand light emitting element 34, the second minute hand light emitting element 35 and the second seconds hand light emitting element 36 to rotate. In this embodiment, since the first gear set 53 and the second gear set 54 are respectively located at two sides of the driving gear 52, the first gear set 53 and the second gear set 54 can be synchronously rotated by providing the steering gear 541.

In the present embodiment, the transmission speed ratio of the third sub gear 542, the fourth sub gear 543, and the sixth sub gear 544 is 1:12: 720. by adjusting the numbers or pitches of the third sub-gear 542, the fourth sub-gear 543 and the sixth sub-gear 544, the modules of the third sub-gear 542, the fourth sub-gear 543 and the sixth sub-gear 544 are adjusted, so that the transmission speed ratio of the third sub-gear 542, the fourth sub-gear 543 and the sixth sub-gear 544 reaches a set value.

Referring to fig. 4, the projective clock 100 further includes a plurality of first bearings (not shown), a plurality of second bearings 62, a plurality of third bearings 63, and a plurality of fourth bearings 64. When projection clock 100 includes first second hand gear 23 and second hand gear 33, projection clock 100 further includes a plurality of fifth bearings 65 and a plurality of sixth bearings 66. The loading plate 13 is disposed in the accommodating space 18 and has a plurality of first fixing posts (not shown), and the top cover 14 is disposed in the accommodating space 18 and has a plurality of second fixing posts (not shown). Each first bearing 61, each second bearing 62, each third bearing 63 and each fourth bearing 64 are respectively sleeved on one first fixed column, and each first bearing 61, each second bearing 62, each third bearing 63 and each fourth bearing 64 can rotate around one first fixed column. Each fifth bearing 65 and each sixth bearing 66 are respectively sleeved on one second fixing column, and each bearing second fixing column rotates.

The first hour wheel 21 is located in the receiving space 18 and has a first sliding surface (not shown) which is attached to an outer surface of the first bearing. The first bearing supports and guides the first hour wheel 21. On the one hand, the first bearing applies a pressing force to the first hour hand gear 21 in a radial direction of the first hour hand gear 21, and the pressing force generates a frictional force to offset the gravity of the first hour hand gear 21 itself, so that the first hour hand gear 21 is balanced in the axial direction. So that the first hour wheel 21 is balanced in the axial direction. In the other direction, the first bearing functions to restrict the movement of the first hour hand gear 21 in the radial direction so that the first hour hand gear 21 can rotate around the first bearing without being offset. Further, the first sliding surface and the outer surface of the first bearing are both sliding surfaces, so that the first hour hand gear 21 can smoothly rotate around the first bearing. It should be noted that the "sliding surface" referred to herein is relatively smooth, and not absolutely smooth in a physical sense, and friction can still be generated between the two sliding surfaces.

The first minute gear 22 is located in the housing space 18 and has a second sliding surface (not shown) which is attached to the outer surface of the second bearing 62. The second bearing 62 supports and guides the first minute gear 22. On the one hand, the first minute gear 22 is balanced in the axial direction. In the other direction, the first minute gear 22 is allowed to rotate around the second bearing 62 without being displaced. Also, the second sliding surface and the outer surface of the second bearing 62 are sliding surfaces, so that the first minute gear 22 can smoothly rotate around the second bearing 62.

The first second hand gear 23 has a fifth sliding surface (not shown) located in the housing space 18, and the fifth sliding surface is in contact with the outer surface of the fifth bearing 65. The fifth bearing 65 supports and guides the first second hand gear 23. On the one hand, first second hand gear 23 is balanced in the axial direction. In the other direction, the first second hand gear 23 is allowed to rotate around the fifth bearing 65 without being displaced. Likewise, the outer surfaces of the fifth sliding surface and the fifth bearing 65 are both sliding surfaces, so that the first seconds hand gear 23 can smoothly rotate around the fifth bearing 65.

The second hour hand gear 31 has a third sliding surface (not shown) located in the housing space 18, and the third sliding surface is in contact with the outer surface of the third bearing 63. The third bearing 63 supports and guides the second hour hand gear 31. On the one hand, the second hour hand gear 31 is balanced in the axial direction. In the other direction, the second hour hand gear 31 is allowed to rotate around the third bearing 63 without being displaced. Similarly, the third sliding surface and the outer surface of the third bearing 63 are sliding surfaces, so that the second hour hand gear 31 can smoothly rotate around the third bearing 63.

The second minute gear 32 has a fourth sliding surface (not shown) located in the housing space 18, and the fourth sliding surface is attached to the outer surface of the fourth bearing 64. The fourth bearing 64 supports and guides the second minute hand gear 32. On the one hand, the second minute gear 32 is balanced in the axial direction. In the other direction, the second minute gear 32 is allowed to rotate around the fourth bearing 64 without being displaced. Likewise, the outer surfaces of the fourth sliding surface and the fourth bearing 64 are sliding surfaces, so that the second minute gear 32 can smoothly rotate around the fourth bearing 64.

The second hand gear 33 has a sixth sliding surface (not shown) located in the housing space 18, and the sixth sliding surface is in contact with the outer surface of the sixth bearing 66. The sixth bearing 66 supports and guides the second seconds hand gear 33. On the one hand, the second seconds gear 33 is balanced in the axial direction. In the other direction, the second hand gear 33 is allowed to rotate around the sixth bearing 66 without being displaced. Also, the sixth sliding surface and the outer surface of the sixth bearing 66 are both sliding surfaces, so that the second seconds gear 33 can smoothly rotate around the sixth bearing 66.

Referring to fig. 2, the projection clock 100 further includes a detecting element (not shown) disposed on the casing 10, the detecting element is connected to the main control board 40, the detecting element is configured to detect a rotation speed of the first hour wheel 21, the second hour wheel 31, the first minute wheel 22, or the second minute wheel 32 to generate a detection data, and transmit the detection data to the main control board 40, and the main control board 40 is configured to adjust the rotation speeds of the first hour wheel 21, the second hour wheel 31, the first minute wheel 22, and the second minute wheel 32 according to the detection data. When projection clock 100 includes first second hand gear 23 and second hand gear 33, the detection piece may also be used to detect the rotational speeds of first second hand gear 23 and second hand gear 33.

Specifically, the detecting members are further connected with the driving member 50, the number of the detecting members is the same as that of the motors 51, and each motor 51 is provided with one detecting member. In the present embodiment, the detector detects the rotational speed of the first second hand gear 23 and the second hand gear 33 by detecting the rotational speed of the motor. When the time indicated by the projection clock 100 is affected by the external environment, the motor itself, or the friction force during the rotation of the gear, the time may be inaccurate. By providing the detecting member on the casing 10, the detecting member detects the actual rotational speeds of the first second hand gear 23 and the second hand gear 33 in real time to obtain the detection data, and when the detection data deviates from the preset rotational speed, the main control board 40 controls the rotational speed of the motor 51 according to the detection data, thereby adjusting the rotational speeds of the first gear train 53 and the second gear train 54 to ensure the accuracy of the time displayed by the projection clock 100.

Referring to fig. 2 and 3, the projection clock 100 further includes a power supply unit 41, a first conductive unit 71, a second conductive unit, a third conductive unit, and a fourth conductive unit (not shown), wherein the power supply unit 41 is accommodated in the accommodating space 18, one end of each of the first conductive unit 71, the second conductive unit, the third conductive unit, and the fourth conductive unit is connected to the power supply unit 41 or the main control board 40, the other end of the first conductive unit 71 is connected to the first minute hand light emitting unit 24, the other end of the second conductive unit is connected to the first minute hand light emitting unit 25, the other end of the third conductive unit is connected to the second minute hand light emitting unit 34, and the other end of the fourth conductive unit is connected to the second minute hand light emitting unit 35. When projection clock 100 further includes first second hand gear 23 and second hand gear 33, projection clock 100 further includes fifth conductive member 74 and sixth conductive member.

Specifically, the power supply 41 is fixed to the carrier plate 13 and electrically connected to the power source 16. The power supply 41 includes an inner ring power supply 412 and an outer ring power supply 411. The inner ring power supply part 412 and the outer ring power supply part 411 are both ring-shaped, and the outer ring power supply part 411 and the inner ring power supply part 412 are electrically connected. The first conductive member 71 is fixed on the first hour hand gear 21, one end of the first conductive member is connected to the outer ring power supply member 411, and the other end of the first conductive member is connected to the first hour hand light emitting member 24 through a wire, so as to transmit the electric quantity on the outer ring power supply member 411 to the first hour hand light emitting member 24, so that the first hour hand light emitting member 24 is turned on and emits the first hour hand light 243. Since the outer ring power supply element 411 is annular, the first conductive element 71 can always contact the outer ring power supply element 411 when rotating, so that the first time-point light-emitting element 24 can be continuously conducted. In this embodiment, there are two first conductive members 71, and the two first conductive members 71 are disposed at two ends of the diameter of the first clock gear 21, so that the first clock gear 21 is stressed in a balanced manner during the rotation process, and the stability of the rotation of the first clock gear 21 is ensured.

The third conductive member is fixed on the second hour hand gear 31, one end of the third conductive member is connected to the inner ring power supply member 412, and the other end of the third conductive member is connected to the second hour hand light emitting member 34 through a wire, so as to transmit the electric quantity on the inner ring power supply member 412 to the second hour hand light emitting member 34, so that the second hour hand light emitting member 34 is turned on and emits the second hour hand light ray 313. In this embodiment, there are two third conductive members, and the two third conductive members are disposed at two ends of the diameter of the second hour hand gear 31, so as to ensure the stability of the rotation of the second hour hand gear 31.

The projection clock 100 further includes a first power extraction ring 72 and a second power extraction ring 73, and both the first power extraction ring 72 and the second power extraction ring 73 are annular. The first electricity-taking ring 72 is fixed on the first minute gear 22 and electrically connected to the first minute light-emitting member 25. The second power extracting ring 73 is fixed to the second minute hand gear 32 and electrically connected to the second minute hand light emitting member 35. The second conductive member and the fourth conductive member are fixed to the carrier plate 13 by fixing members. One end of the second conductive member is electrically connected to the outer ring power supply member 411 through a conductive wire, and the other end is in contact with the first power taking ring 72. The electric quantity on the outer ring power supply element 411 is transmitted to the first power taking ring 72 through the second conductive element and then transmitted to the first minute hand light emitting element 25, so that the first minute hand light emitting element 25 emits the first minute hand light. In this embodiment, two second conductive members are disposed at two ends of the diameter of the first pin gear 22, so as to ensure the stability of the rotation of the first pin gear 22.

One end of the fourth conductive member is electrically connected to the inner ring power supply member 412, and the other end is in contact with the second power take-off ring 73. The electric quantity on the inner ring power supply part 412 is transmitted to the second power taking ring 73 through the fourth conductive member and then transmitted to the second minute hand light emitting part 35, so that the second minute hand light emitting part 35 emits the second minute hand light. In this embodiment, there are two fourth conductive members, and the two fourth conductive members are disposed at two ends of the diameter of the second minute hand gear 32, so as to ensure the stability of the rotation of the second minute hand gear 32.

Main control board 40 is fixed to the surface of top cover 14 within housing space 18, that is, within housing space 18, near one end of first second hand gear 23 and second hand gear 33. The fifth conductive member 74 is fixed to the first second hand gear 23, has one end connected to the main control board 40 and the other end connected to the first second hand light emitting member 26 through a wire, to transmit the electricity from the main control board 40 to the first second hand light emitting member 26, so that the first second hand light emitting member 26 is turned on and emits the first second hand light 263. In this embodiment, there are two fifth conductive members 74, and the two fifth conductive members 74 are disposed at two ends of the diameter of the first second hand gear 23 to ensure the stability of the rotation of the first second hand gear 23.

The sixth conductive member is fixed to the second hand gear 33, and has one end connected to the main control board 40 and the other end connected to the second hand light emitting member 36 through a wire, so as to transmit the electricity from the main control board 40 to the second hand light emitting member 36, so that the second hand light emitting member 36 is turned on and emits the second hand light 333. In this embodiment, there are two sixth conductive members, and the two sixth conductive members are disposed at two ends of the diameter of the second hand gear 33, so as to ensure the stability of the rotation of the second hand gear 33.

Referring to fig. 6, the first hour hand light emitting element 24, the first minute hand light emitting element 25, the first second hand light emitting element 26, the second hour hand light emitting element 34, the second minute hand light emitting element 35 and the second hand light emitting element 36 each include a light emitting portion 241 and an image forming portion 242, and light emitted from the light emitting portion 241 is emitted to the outside of the housing 10 through the image forming portion 242. In this embodiment, the light emitting unit 241 is an LED light source. In other embodiments, the light emitting portion 241 may be any other light source capable of emitting light.

Specifically, the first time hand light 243, the first minute hand light and the first second hand light 263 are emitted from the outer wall 12. Second hour hand ray 313, second minute hand ray 333, and second hand ray are emitted from inner wall 11 and extend toward the center of case 10. Specifically, the inner wall 11 and the outer wall 12 may be provided as a transparent case such that the first hour hand light ray 243, the first minute hand light ray and the first second hand light ray 263 are emitted outside the case 10 through the outer wall 12, and the second hour hand light ray 313, the second minute hand light ray and the second hand light ray 333 are emitted outside the case 10 through the inner wall 11.

When the projection clock 100 is hung on a wall surface, the first hour hand light ray 243 and the second hour hand light ray 313 are projected on the wall surface on the same straight line to form an hour hand light ray together. The first hour hand gear 21 and the second hour hand gear 31 rotate synchronously to drive the first hour hand light 243 and the second hour hand light 313 to rotate synchronously to indicate the hour hand positions together.

The projection of first minute hand light and second minute hand light on the wall is on same straight line, forms minute hand light jointly. The first minute hand gear 22 and the second minute hand gear 32 rotate synchronously to drive the first minute hand light and the second minute hand light to rotate synchronously to indicate the minute hand position together.

The first second hand light 263 and the second hand light 333 are projected on the same straight line on the wall surface to form a second hand light together, and the first second hand gear 23 and the second hand gear 33 rotate synchronously to drive the first second hand light 263 and the second hand light 333 to rotate synchronously to indicate the second hand position together.

The light passes through the imaging portion 242 to form a predetermined shape, and then exits to the outside of the housing 10. For example, a pointer shape is provided on the imaging section 242 so that the light finally emitted is in the pointer shape. Alternatively, the imaging section 242 may be provided with an arrow, a heart, a love heart, or the like.

Referring back to fig. 1, the outer surface of the top cover 14 is provided with scales 80, and the scales 80 can be 4, 12 or 24 as long as the time can be read through the scales 80. The scale 80 may be a short line, may be a number, or may be a pattern. A light source may be disposed within the scale 80 to emit a bright light. In other embodiments, the scale 80 may be made of a luminescent material so that the scale 80 can automatically emit light when the light is dim. In this embodiment, the scale 80 is a combination of short lines and numbers. The scale 80 through which the extension lines of the first hour hand light ray 243 and the second hour hand light ray 313 pass is the hour hand time, the scale 80 through which the extension lines of the first minute hand light ray and the second minute hand light ray pass is the minute hand time, and the scale 80 through which the extension lines of the first second hand light ray 263 and the second hand light ray 333 pass is the second hand time. The time indicated by the projection clock 100 can be read by the hour hand time, minute hand time and second hand time.

Referring to fig. 2 and 3, the projection clock 100 further includes a backlight 81, and the backlight 81 is fixed on the carrier 13 and located outside the accommodating space 18. The backlight 81 is electrically connected to the main control panel 40. The backlight 81 is composed of a plurality of LED light sources or LED light bars. The brightness and color of the backlight 81 can be adjusted as desired. The backlight 81 is used to illuminate the projection clock 100 when the light is dim, so that the user can read the time indicated by the projection clock 100 more clearly. At the same time, the backlight 81 also serves an aesthetic function. In this embodiment, a backlight switch 86 is disposed on the housing 10, and the backlight switch 86 is used for controlling the color and brightness of the backlight 81.

Referring to fig. 2 and 7, the projection clock 100 further includes an adjusting element 82, the adjusting element 82 is disposed on the inner wall 11, the adjusting element 82 is configured to rotate the adjusting element 82 to generate an adjusting signal, the adjusting element 82 is configured to receive the adjusting signal and transmit the adjusting signal to the main control board 40, the main control board 40 is configured to adjust positions and angles of the first minute hand light-emitting element 24, the first minute hand light-emitting element 25, the second hour hand light-emitting element 34, and the second minute hand light-emitting element 35 according to the adjusting signal, or the main control board 40 is configured to adjust brightness of the first minute hand light 243, the first minute hand light, the second hour hand light 313, and the second minute hand light according to the adjusting signal. In this embodiment, the adjusting member 82 is disposed on the inner wall 11 and connected to the main control board 40.

The projection clock 100 further includes a mode switching member 83, the mode switching member 83 is disposed on the inner wall 11, and the mode switching member 83 is connected to the adjusting member 82. The mode switching member 83 is switched to the time adjustment mode, and the rotation adjustment member 82 can adjust the time of the projection clock 100. The mode switching member 83 is switched to a light emitting member adjusting mode, and the rotation adjusting member 82 can adjust the brightness of the light emitting member. The mode switching member 83 is switched to the backlight 81 adjusting mode, and the rotation adjusting member 82 can adjust the brightness of the backlight 81.

With continued reference to fig. 7, the projection clock 100 further includes a power switch 85, the power switch 85 is disposed on the inner wall 11, and the power switch 85 is used to control the states of the light emitting element and the motor of the projection clock 100. Turning off the power switch 85 can turn off either the glowing member or the motor, or both the glowing member and the motor. In this embodiment, different closing modes can be achieved by short pressing, long pressing, double clicking or the like. Optionally, an indicator light is provided on the power switch 85, and the indicator light is used for indicating the running state of the motor. In this embodiment, when the pilot lamp is green, the motor operates, and when the pilot lamp is yellow, the motor shuts down.

Referring back to fig. 1, top cover 14 is also used to display parameters of projection clock 100. In this embodiment, the top cover 14 may be configured as a display screen for displaying the time of the projection clock 100, or the temperature and humidity of the environment.

In an embodiment of the present application, a sensor is further disposed on the projection clock 100, and the sensor is connected to the main control board 40. The sensor can be a human body sensor, a light sensor, a sound control sensor, a natural gas/smoke sensor or a temperature and humidity sensor.

When the sensor is a human body sensor, the shell is provided with a lens in a matching way. When a human body is close to the projection clock 100, the human body sensor senses a human body image through the lens and transmits a signal to the main control board 40, and the main control board 40 enhances the brightness of light emitted by the light-emitting member, so that a user can more clearly see the time indicated by the projection clock 100. When the human body sensor does not sense the human body image, the main control panel 40 weakens the brightness of the light emitted by the light emitting member, thereby playing a role of saving power.

In another embodiment of the present application, the sensor is a light sensor, and the housing is provided with a lens. Light from the environment surrounding the projection clock 100 is projected through the lens to the light sensor, which senses the intensity of the ambient light. The main control panel 40 adjusts the brightness of the light emitted from the light emitting member by the intensity of the ambient light. When the intensity of the ambient light is strong, the main control panel 40 increases the brightness of the light emitted from the light emitting member, so that the user can more clearly see the time indicated by the projection clock 100. When the intensity of the ambient light is weak, the main control board 40 weakens the brightness of the light emitted by the light emitting member, so as to achieve the purpose of saving the electric quantity.

In another embodiment of the present application, the sensor is a voice-operated sensor, and the housing is provided with a sound inlet hole. The sound control sensor senses the sound, so that the brightness of the light emitted by the light emitting piece is adjusted. In other embodiments, a voice recognition module may be further disposed in the projection clock 100, and the voice recognition module is electrically connected to the voice-controlled sensor and the main control board 40. The voice control sensor senses the voice transmitted from the sound inlet hole and transmits a voice signal to the voice recognition module, and the voice recognition module transmits the recognition result to the main control board 40. The main control board 40 adjusts the time indicated by the projection clock 100 or the brightness of the light emitted from the light emitting member by the recognition result.

In another embodiment of the present application, the sensor is a natural gas/smoke sensor, the housing is provided with an air inlet, and the projection clock 100 is further provided with an alarm, and the alarm is electrically connected to the main control board 40. Ambient gas around the projection clock 100 enters the projection clock 100 through an air inlet and contacts the natural gas/smoke sensor, which senses the concentration of natural gas and smoke in the ambient gas. When the concentration of natural gas or smoke in the environmental gas is larger than or equal to a preset value, the alarm gives an alarm. When the concentration of natural gas or smoke in the environmental gas is less than a preset value, the alarm does not give an alarm.

In another embodiment of the present application, the sensor is a temperature and humidity sensor, and the housing is provided with an air flow hole in a fitting manner. Ambient air flow around projection clock 100 enters projection clock 100 through air flow holes. The temperature and humidity sensor senses the temperature and humidity of the ambient air flow. In this embodiment, temperature and humidity sensor still is connected with top cap 14, and temperature and humidity that temperature and humidity sensor sensed can show through top cap 14.

In an embodiment of the present application, the projection clock 100 further includes an automatic timing module, and the automatic timing module is electrically connected to the main control board 40. The automatic timing module may be configured to receive an external signal and control the main control board 40 to adjust the time indicated by the projection clock 100 according to the external signal. The automatic timing module can receive external signals through technologies such as Bluetooth or wireless network.

In another embodiment of the present application, the projection clock 100 further includes an intelligent adjusting module, and the intelligent adjusting module is connected to the terminal device in a cloud manner. The terminal equipment can be a computer, a smart phone or a smart watch. In this embodiment, the terminal device is a smart phone. Parameters of the projection clock 100, such as time, backlight 81 status, light emitter status, etc., may be transmitted and displayed on the smartphone. The smart phone may also send an instruction to the smart adjustment module, so that the projection clock 100 adjusts the time, the state of the backlight 81, the state of the illuminating element, or the like according to the instruction.

Referring to fig. 2, the projection clock 100 further includes a bottom wall 15, and the bottom wall 15 is connected to the two backlights 81 and fixed to the supporting board 13 by a fixing member. The outer surface of the bottom wall 15 is further provided with a hanging hole which is arranged on one side opposite to the diameter direction of the power supply 16. The power supply 16 is a component of the projection clock 100, and when the hanging hole of the projection clock 100 is provided on the diametrically opposite side of the motor 51, the projection clock 100 can be balanced when the projection clock 100 is hung on a wall surface through the hanging hole. In another embodiment of the present application, a rotating clip is provided on the bottom wall 15, and the projection clock 100 can be hung on the ceiling through the rotating clip. Optionally, a magnetic member may be further disposed on the bottom wall 15, and the projection clock 100 is magnetically mounted on the wall or ceiling through the magnetic member.

Referring to fig. 4, the projection clock 100 further includes two weight blocks 17, and the weight blocks 17 are located in the accommodating space 18 and fixed on the supporting plate 13. The two bearing blocks 17 are respectively disposed on two opposite sides of the power supply 16 to keep the projection clock 100 balanced during operation, thereby preventing the center of gravity from shifting due to the movement of the light-emitting member. Meanwhile, the stability of the projection clock 100 when the projection clock is hung on the wall surface through the hanging hole is further enhanced.

Referring to fig. 8, in another embodiment of the present invention, the projected clock 100 includes a first hour hand 91, a second hour hand 92, a first minute hand 93, a second minute hand 94, a first second hand 95, and a second hand 96. The first hour hand 91 is fixed to the first hour hand gear 21 and located near the first hour hand lighting member 24, and the first hour hand 91 extends outward of the housing 10 in a radial direction of the first hour hand gear 21. A second hour hand 92 is fixed to the second hour hand gear 31 and located near the second hour hand illuminator 34, and the second hour hand 92 extends toward the center of the casing 10 in the radial direction of the second hour hand gear 31. The first hour hand pointer 91 and the second hour hand pointer 92 are used together to indicate the hour hand position. The first minute hand 93 is fixed to the first minute gear 22 and located near the first minute light emitting member 25, and the first minute hand 93 extends outward of the housing 10 in a radial direction of the first minute gear 22. The second minute hand 94 is fixed to the second minute gear 32 and located close to the second minute light emitting member 35, and the second minute hand 94 extends toward the center of the casing 10 in the radial direction of the second minute gear 32. The first minute hand pointer 93 and the second minute hand pointer 94 are used together to indicate the minute hand position. A first second hand 95 is fixed to the first second hand gear 23 and located near the first second hand light emitting member 26, the first second hand 95 extending outward of the housing 10 in the radial direction of the first second hand gear 23. A second hand 96 is fixed to the second hand gear 33 and located close to the second hand light emitting element 36, the second hand 96 extending in the radial direction of the second hand gear 33 toward the center of the casing 10. The first second hand 95 and the second hand 96 are used together to indicate the second hand position.

Specifically, the first hour hand 91, the second hour hand 92, the first minute hand 93, the second minute hand 94, the first second hand 95, and the second hand 96 may be in the form of a flat finger, a solid finger, or a hand with an arrow. The hour, minute and second hands may be provided in different lengths or shapes to allow for more clear differentiation by the user. The first hour hand 91, the second hour hand 92, the first minute hand 93, the second minute hand 94, the first second hand 95, and the second hand 96 may be provided with a light emitting member thereon so that a user can clearly see the time indicated by the projection clock 100 when the light is dark. The first, second, third, and

fourth hour hands

91, 92, 93, 94, 95, and 96 may be provided with no light-emitting element, so that the structure of the projection clock 100 can be simplified and power can be saved. Since the projection clock 100 is driven by the motor 51 in the present embodiment, the driving force is relatively large, and the accuracy of the time indicated by the hands can be ensured even when the hands are heavy.

In the present embodiment, the housing does not include the inner wall 11 and the outer wall 12 so that the hand can be smoothly rotated to accurately indicate time. In other embodiments, sliding grooves (not shown) may be formed in the inner wall 11 and the outer wall 12 in the pointer rotation direction, so that the pointer may protrude out of the housing 10 through the sliding grooves and may smoothly rotate to accurately indicate the time.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. A hollow projection clock is characterized by comprising a shell, a first hour hand gear, a second hour hand gear, a first minute hand gear and a second minute hand gear, wherein the shell comprises an accommodating space, the first hour hand gear, the second hour hand gear, the first minute hand gear and the second minute hand gear are all arranged in the accommodating space,

the first hour hand gear is provided with a first hour hand light-emitting piece, the first hour hand light-emitting piece emits first hour hand light rays which are emitted towards the center of the shell, the second hour hand gear is provided with a second hour hand light-emitting piece, the second hour hand light-emitting piece emits second hour hand light rays which are emitted towards the outside of the shell, the first hour hand light rays and the second hour hand light rays are used for indicating the hour hand position, the first hour hand gear and the second hour hand gear rotate, so that the positions of the first hour hand light rays and the second hour hand light rays are changed,

the light-emitting component of first minute hand is equipped with on the first minute hand gear, the light-emitting component of first minute hand sends towards the first minute hand light that the casing center jetted out, be equipped with the second minute hand light-emitting component on the second minute hand gear, the second minute hand light-emitting component sends towards the second minute hand light that the casing jets out outward, first minute hand light with second minute hand light is used for the instruction minute hand position, first minute hand gear with the second minute hand gear is all rotatory to make the position of first minute hand light with second minute hand light change,

the hour hand position and the minute hand position are changed to indicate time together;

the projection clock still includes the driving piece, the driving piece is located in the accommodating space, the driving piece includes motor, drive gear, first gear train and second gear train, the motor with drive gear connects, drive gear with first gear train and the meshing of second gear train, motor drive gear rotates, drive gear drives first gear train with the second gear train rotates, first gear train rotates in order to drive first hour hand gear with first minute hand gear rotates, second gear train rotates in order to drive second hour hand gear with second minute hand gear rotates.

2. The projection clock of claim 1, wherein the housing includes an inner wall and an outer wall, the inner wall and the outer wall being spaced apart to define the receiving space, the first hour hand light and the first minute hand light being emitted from the inner wall toward a center of the housing, the second hour hand light and the second minute hand light being emitted from the outer wall.

3. The projection clock of claim 2, wherein the projection clock further comprises a power supply and a main control board, the power supply and the main control board are both disposed in the accommodating space, the main control board is connected with the power supply, the driving member is connected with the main control board, the power supply is used for supplying power to the main control board, the main control board is used for controlling the driving member to rotate, the driving member is used for driving the first hour hand gear and the first minute hand gear to rotate so as to drive the first hour hand luminous member and the first minute hand luminous member to rotate, and the driving member is also used for driving the second hour hand gear and the second minute hand gear to rotate so as to drive the second hour hand luminous member and the second minute hand luminous member to rotate.

4. The projection clock of claim 3, wherein the first gear set includes a first sub gear and a second sub gear, the first sub gear is engaged with the first hour hand gear, the second sub gear is engaged with the first minute hand gear, the first sub gear and the second sub gear are coaxially spaced and coaxially rotate, and the driving gear is engaged with any one of the first sub gear and the second sub gear.

5. The projection clock of claim 3, wherein the second gear set comprises a steering gear, a third sub-gear and a fourth sub-gear, the third sub-gear is engaged with the second hour hand gear, the fourth sub-gear is engaged with the second minute hand gear, the third sub-gear and the fourth sub-gear are coaxially spaced and coaxially rotate, the driving gear is engaged with the steering gear, and the steering gear is engaged with any one of the third sub-gear and the fourth sub-gear.

6. The projection clock of claim 3, further comprising a power supply member, a first conductive member, a second conductive member, a third conductive member, and a fourth conductive member, wherein the power supply member is received in the receiving space, one end of each of the first conductive member, the second conductive member, the third conductive member, and the fourth conductive member is connected to the power supply member or the main control board, the other end of the first conductive member is connected to the first minute-hand light emitting member, the other end of the second conductive member is connected to the first minute-hand light emitting member, the other end of the third conductive member is connected to the second hour-hand light emitting member, and the other end of the fourth conductive member is connected to the second minute-hand light emitting member.

7. The projection clock of claim 6, further comprising an adjusting member, wherein the adjusting member is rotated to generate an adjusting signal, the adjusting member is configured to receive the adjusting signal and transmit the adjusting signal to the main control board, the main control board is configured to adjust positions and angles of the first minute hand light-emitting member, the second hour hand light-emitting member, and the second minute hand light-emitting member according to the adjusting signal, or the main control board is configured to adjust brightness of the first minute hand light, the second hour hand light, and the second minute hand light according to the adjusting signal.

8. The projection clock of claim 7, further comprising a detection member disposed on the housing, wherein the detection member is connected to the main control board, the detection member is configured to detect a rotation speed of the first hour hand gear, the second hour hand gear, the first minute hand gear, or the second minute hand gear, so as to generate detection data, and transmit the detection data to the main control board, and the main control board is configured to adjust the rotation speeds of the first hour hand gear, the second hour hand gear, the first minute hand gear, and the second minute hand gear according to the detection data.

9. The projection clock according to any one of claims 1 to 8, wherein the projection clock further includes a first second hand gear and a second hand gear, both of which are provided in the housing space, a first second hand light emitting element provided on the first second hand gear and emitting a first second hand light emitted toward a center of the housing, a second hand light emitting element provided on the second hand gear and emitting a second hand light emitted toward an outside of the housing, the first second hand light and the second hand light indicating a second hand position, and both of the first second hand gear and the second hand gear rotating to change positions of the first second hand light and the second hand light.

10. The projection clock according to any one of claims 1 to 8, wherein the first hour hand light emitting member, the first minute hand light emitting member, the second hour hand light emitting member, and the second minute hand light emitting member each include a light emitting portion and an imaging portion, and light emitted from the light emitting portion is emitted to the outside of the housing through the imaging portion.

11. The projection clock of claim 2, wherein the housing includes a top cover, the top cover covering the inner wall and the outer wall, the top cover having time scales thereon, the top cover further configured to display parameters of the projection clock.