Projection device and dish washing machine

Abstract

The invention relates to the technical field of dish-washing machines, particularly provides a projection device and a dish-washing machine, and aims to solve the problems that a projection lamp of an existing dish-washing machine cannot be subjected to light and shadow adjustment in different light environments, the projection effect is not bright, and the user experience feeling is reduced. In order to achieve the purpose, the projection device comprises a shell, a control mechanism, a photoresistor and a projection lamp, the control mechanism is arranged in the shell and connected with the shell, the photoresistor and the projection lamp are both integrated on the control mechanism, and the photoresistor is used for obtaining external light intensity information of the shell and transmitting the external light intensity information to the control mechanism. The control mechanism adjusts the brightness of the projection light of the projection lamp according to the external light intensity information. According to the projection device, the light environment outside the projection device is obtained through the photoresistor and transmitted to the control mechanism, the control mechanism controls the brightness of the projection lamp according to the light environment, the projection effect is bright, and therefore the user experience feeling is improved.

Description

Technical Field

[0001] This invention relates to the field of dishwasher technology, specifically providing a projection device and a dishwasher. Background Technology

[0002] As people's living standards continue to improve, many people buy a dishwasher for their homes to make their after-dinner routine easier. This not only frees up their hands but also improves dishwashing efficiency.

[0003] Dishwashers are generally divided into automatic flush dishwashers and ultrasonic dishwashers. Automatic flush dishwashers use high-pressure water jets to mechanically scrub the surface of the dishes 360°, while simultaneously using high-temperature water and detergent to break down grease and residue. Finally, soaking the food residue in hot water further breaks down and removes the grease, achieving both cleaning and sterilization. Ultrasonic dishwashers use ultrasound to create tiny cavitation bubbles in water molecules. When these bubbles explode on the surface of the dishes, they generate shock waves that break down dirt and remove it from the dishes, thus achieving cleaning.

[0004] The projection lights in existing dishwashers cannot adjust the light and shadow in different lighting environments, resulting in a dim projection effect and a poor user experience.

[0005] Accordingly, there is a need in the art for a new projection device and a dishwasher to solve the above problems. Summary of the Invention

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problem that the projection lamp of the existing dishwasher cannot adjust the light and shadow in different lighting environments, resulting in a dim projection effect and reduced user experience.

[0007] In a first aspect, the present invention provides a projection device, the projection device comprising a housing, a control mechanism, a photoresistor, and a projection lamp; the control mechanism is disposed inside the housing and connected to the housing, the photoresistor and the projection lamp are both integrated on the control mechanism, the photoresistor is used to acquire external light intensity information of the housing and transmit the external light intensity information to the control mechanism, so that the control mechanism adjusts the brightness of the projected light of the projection lamp according to the external light intensity information.

[0008] In a preferred embodiment of the above projection device, the control mechanism includes a control board and an integrated board, the integrated board being mounted on the control board, and the control board being configured to adjust the brightness of the projected light from the projection lamp according to the external light intensity information.

[0009] In the preferred embodiment of the above projection device, the photoresistor and the projection lamp are integrated on the integrated board, and the photoresistor is exposed outside the housing.

[0010] In the preferred embodiment of the above projection device, the housing includes an upper housing, a connecting plate, and a lower housing; the lower end of the upper housing is pressed with the connecting plate extending laterally inward therein; the upper end of the lower housing and the inner edge of the connecting plate are integrally formed, and the upper end of the lower housing extends vertically downward below the inner edge of the connecting plate, so that the bottom surface of the connecting plate is unobstructed.

[0011] In the preferred embodiment of the above projection device, the control mechanism is installed on the upper part of the connecting plate.

[0012] In a preferred embodiment of the above-mentioned projection device, the projection device further includes an adjustment device, which is disposed inside the housing and located on the projection light path of the projection lamp, and is used to adjust the clarity of the projection light of the projection lamp.

[0013] In a preferred embodiment of the above-described projection device, the adjustment device includes a power unit, a support assembly, a connecting assembly, a lens, and an ultrasonic transceiver. The support assembly is located inside the housing and below the control mechanism. The connecting assembly is mounted on the support assembly. The lens is connected to the connecting assembly. The power unit is located inside the housing and is connected to the control mechanism, the support assembly, and the connecting assembly. The ultrasonic transceiver is integrated into the control mechanism and exposed outside the housing. The ultrasonic transceiver is used to acquire the distance from the projection device to the ground and transmit the distance value to the control mechanism, so that the control mechanism drives the power unit and the connecting assembly according to the distance value, causing the projection lamp to rise or fall, thereby adjusting the clarity of the projected light.

[0014] In a preferred embodiment of the projection device described above, the support assembly includes a first support cylinder and a second support cylinder. The first support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The first support cylinder is located below the control mechanism. A first opening is formed on the front side of the first support cylinder along its axial direction, and a first transverse through hole is formed on the upper part of the first support cylinder. The second support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The second support cylinder is located below the control mechanism. A second opening is formed on the front side of the second support cylinder along its axial direction, and a second transverse through hole is formed on the upper part of the second support cylinder. The first opening and the second opening are symmetrically arranged, and the first through hole and the second through hole are coaxially arranged.

[0015] In the preferred embodiment of the above projection device, the power device includes a motor, a motor power output shaft, a first gear, and a second gear; the motor power output shaft is connected to the motor and is inserted into the first through hole and the second through hole; the first gear and the second gear are both mounted on the motor power output shaft, and the first gear is located in the upper inner part of the first support cylinder, and the second gear is located in the upper inner part of the second support cylinder.

[0016] In a preferred embodiment of the projection device described above, the connecting assembly includes a third gear, a fourth gear, a first chain, and a second chain. The third gear is installed in the lower inner part of the first support cylinder, and the first chain is disposed inside the first support cylinder and fitted onto the third gear and the first gear. The first segment of the first chain is connected to the inner edge of the lens. The fourth gear is installed in the lower inner part of the second support cylinder, and the second chain is disposed inside the second support cylinder and fitted onto the fourth gear and the second gear. The second segment of the second chain is connected to the inner edge of the lens, and the first segment of the first chain and the second segment of the second chain are arranged parallel to each other. The motor power output shaft is used to drive the first gear and the second gear to rotate, so that the third gear and the fourth gear rotate accordingly, thereby rotating the first chain and the second chain to raise or lower the lens, adjusting the clarity of the projected light from the projection lamp illuminating the lens.

[0017] Option 1. A projection device, the projection device comprising a housing, a control mechanism, a photoresistor, and a projection lamp;

[0018] The control mechanism is located inside the housing and connected to the housing. The photoresistor and the projection lamp are both integrated into the control mechanism. The photoresistor is used to acquire the external light intensity information of the housing and transmit the external light intensity information to the control mechanism so that the control mechanism can adjust the brightness of the projected light of the projection lamp according to the external light intensity information.

[0019] Solution 2. The projection device according to Solution 1, characterized in that the control mechanism includes a control board and an integrated board, the integrated board is mounted on the control board, and the control board is configured to adjust the brightness of the projected light of the projection lamp according to the external light intensity information.

[0020] Solution 3. The projection device according to Solution 2, characterized in that the photoresistor and the projection lamp are integrated on the integrated board, and the photoresistor is exposed outside the housing.

[0021] Option 4. The projection device according to Option 1, characterized in that the housing comprises an upper housing, a connecting plate, and a lower housing;

[0022] The connecting plate extending laterally into the interior is pressed onto the lower end of the upper housing.

[0023] The upper end of the lower housing and the inner edge of the connecting plate are integrally formed, and the upper end of the lower housing extends vertically downward below the inner edge of the connecting plate so that the bottom surface of the connecting plate is unobstructed.

[0024] Option 5. The projection device according to Option 4, characterized in that the control mechanism is installed on the upper part of the connecting plate.

[0025] Solution 6. The projection device according to Solution 1, characterized in that the projection device further includes an adjustment device, which is disposed inside the housing and located on the projection light path of the projection lamp, for adjusting the clarity of the projection light of the projection lamp.

[0026] Scheme 7. The projection device according to Scheme 6, characterized in that the adjustment device includes a power device, a support assembly, a connecting assembly, a lens, and an ultrasonic receiving and transmitting device;

[0027] The support assembly is located inside the housing and below the control mechanism. The connecting assembly is mounted on the support assembly. The lens is connected to the connecting assembly. The power unit is located inside the housing and is connected to the control mechanism, the support assembly, and the connecting assembly respectively. The ultrasonic receiving and transmitting device is integrated into the control mechanism and exposed outside the housing.

[0028] The ultrasonic receiving and transmitting device is used to obtain the distance value between the projection device and the ground, and transmit the distance value to the control mechanism, so that the control mechanism drives the power device and the connecting component according to the distance value, thereby controlling the projection lamp to rise or fall, so as to adjust the clarity of the projected light of the projection lamp.

[0029] Solution 8. The projection device according to Solution 7, wherein the support assembly comprises a first support cylinder and a second support cylinder;

[0030] The first support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The first support cylinder is located below the control mechanism. A first opening is provided on the front side of the first support cylinder along the axial direction of the first support cylinder. A first transverse through hole is provided on the upper part of the first support cylinder.

[0031] The second support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The second support cylinder is located below the control mechanism. A second opening is provided on the front side of the second support cylinder along the axial direction of the second support cylinder. A second transverse through hole is provided on the upper part of the second support cylinder.

[0032] The first opening and the second opening are symmetrically arranged, and the first through hole and the second through hole are coaxially arranged.

[0033] Solution 9. The projection device according to Solution 8, characterized in that the power device includes a motor, a motor power output shaft, a first gear, and a second gear;

[0034] The motor power output shaft is connected to the motor and is inserted into the first through hole and the second through hole;

[0035] Both the first gear and the second gear are mounted on the motor power output shaft, with the first gear located in the upper inner part of the first support cylinder and the second gear located in the upper inner part of the second support cylinder.

[0036] Solution 10. The projection device according to Solution 9, characterized in that the connecting component includes a third gear, a fourth gear, a first chain, and a second chain;

[0037] The third gear is installed in the lower inner part of the first support cylinder, the first chain is disposed inside the first support cylinder and fitted onto the third gear and the first gear, and the first segment of the first chain is connected to the inner edge of the lens;

[0038] The fourth gear is installed in the lower inner part of the second support cylinder, the second chain is disposed inside the second support cylinder and fitted onto the fourth gear and the second gear, the second segment of the second chain is connected to the inner edge of the lens, and the first segment of the first chain and the second segment of the second chain are arranged in parallel.

[0039] The motor power output shaft is used to drive the first gear and the second gear to rotate, so that the third gear and the fourth gear follow suit and rotate, so that the first chain and the second chain rotate, thereby driving the lens to rise or fall, and adjusting the clarity of the projected light from the projection lamp that illuminates the lens.

[0040] Option 11. A dishwasher comprising the projection device described in any one of Options 1-10 above.

[0041] When the above technical solution is adopted, the projection device of the present invention obtains the light environment outside the projection device through a photoresistor and transmits the light environment to the control mechanism. The control mechanism controls the brightness of the projection lamp according to the light environment, so that the projection effect is bright, thereby improving the user experience.

[0042] Furthermore, the projection device of the present invention also includes an adjustment device, which is disposed inside the housing and located on the projection light path of the projection lamp, for adjusting the clarity of the projection light of the projection lamp.

[0043] In a second aspect, the present invention provides a dishwasher that includes the projection device described in the first aspect.

[0044] The dishwasher of this technical solution includes the projection device of any technical solution of the present invention, and therefore has all the technical effects of the projection device of any technical solution of the present invention. Attached Figure Description

[0045] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0046] Figure 1 This is a front sectional view of a projection device according to the present invention;

[0047] Figure 2 This is a side sectional view of a projection device according to the present invention.

[0048] List of markers in the diagram:

[0049] 1. Photoresistor; 2. Projector lamp; 3. Housing; 4. Control mechanism; 5. Upper housing; 6. Connecting plate; 7. Lower housing; 8. Adjustment device;

[0050] 81. Power unit; 811. Electric motor; 812. Electric motor power output shaft; 813. First gear; 814. Second gear;

[0051] 82. Support assembly; 821. First support cylinder; 822. First opening; 823. First through hole; 824. Second support cylinder; 825. Second opening; 826. Second through hole;

[0052] 83. Connecting component; 831. Third gear; 832. Fourth gear;

[0053] 84. Ultrasonic receiving and transmitting device;

[0054] 85. Lens. Detailed Implementation

[0055] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the projection device and dishwasher of the present invention, and are not intended to limit the scope of protection of the present invention.

[0056] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0057] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] See Figure 1 and Figure 2The first aspect of this application provides a projection device, which generally includes a housing 3, a control mechanism 4, a photoresistor 1, and a projection lamp 2. The control mechanism 4 is disposed inside and connected to the housing 3, and is used to control the operation of the projection device. The photoresistor 1 and the projection lamp 2 are both integrated into the control mechanism 4. The photoresistor 1 is used to acquire external light intensity information of the housing 3 and transmit this information to the control mechanism 4, so that the control mechanism 4 can adjust the brightness of the projected light from the projection lamp 3 according to the external light intensity information.

[0059] The projection device of the present invention obtains the external light environment through the photoresistor 1 and transmits the light environment to the control mechanism 4. The control mechanism 4 controls the brightness of the projection lamp 2 according to the light environment, so that the projection effect is bright and thus improves the user experience.

[0060] Specifically, the housing 3 can be a single piece or multiple parts, and is generally made of plastic or metal. The specific dimensions can be determined according to actual needs. The projection lamp 2 is an existing projection lamp. The photoresistor 1 can automatically acquire external light intensity information, including light intensity, low light intensity, and no light. The photoresistor 1 transmits the external light intensity information to the control mechanism 4, which controls the brightness of the projection lamp 2 based on the light intensity information.

[0061] It should be noted that the projection device of this application can be used in a variety of home appliances, such as dishwashers. When the projection device is used in a dishwasher, the control mechanism 4 and the main control board of the dishwasher are connected in communication so that they can cooperate with each other.

[0062] See Figure 1 In a preferred embodiment of the projection device described above, the control mechanism 4 includes a control board (not marked in the figure) and an integrated board (not marked in the figure). The integrated board is mounted on the control board, and the control board is configured to adjust the brightness of the projected light from the projection lamp 3 according to external light intensity information. The control mechanism 4 is used to control the overall operation of the projection device.

[0063] In this embodiment, both the control board and the integration board are existing, and the control board has a corresponding control program embedded in it, which is an existing control program.

[0064] See Figure 1 In a preferred embodiment of the projection device described above, a photoresistor 1 and a projection lamp 2 are integrated on an integrated board, with the photoresistor 1 exposed outside the housing 3. The photoresistor 1 and the projection lamp 2 are integrated on the integrated board using existing technology and each performs its own function.

[0065] See Figure 1In a preferred embodiment of the projection device described above, the housing 3 generally includes an upper housing 5, a connecting plate 6, and a lower housing 7. The lower end of the upper housing 5 is pressed with the connecting plate 6, which extends laterally inward. The upper end of the lower housing 7 is integrally formed with the inner edge of the connecting plate 6, and the upper end of the lower housing 7 extends vertically downward below the inner edge of the connecting plate 6, ensuring that the bottom surface of the connecting plate 6 is unobstructed. The connecting plate 6 divides the housing 3 into two regions: the upper housing 5 and the lower housing 7. A control mechanism 4 is installed inside the upper housing 5, and an adjustment device 8 is installed inside the lower housing 7.

[0066] In this embodiment, the control mechanism 4 is installed on the upper part of the connecting plate 6. The connecting plate 6 is annular in shape and has connecting screw holes for connecting with the control mechanism 4 by screws, which facilitates disassembly, assembly, maintenance and replacement of the control mechanism 4.

[0067] To resolve the issue of digital blurring projected by projector lamp 2, please refer to... Figure 1 In a preferred embodiment of the projection device described above, the projection device further includes an adjustment device 8, which is disposed inside the housing 3 and located on the projection light path of the projection lamp 2, for adjusting the clarity of the projection light from the projection lamp 2. When the height of the dishwasher changes, the projection light of the projection device becomes unsuitable, resulting in blurred projected numbers. By setting the adjustment device 8 to adjust the projection light, the projected numbers become clear.

[0068] Continue reading Figure 1 In a preferred embodiment of the projection device described above, the adjustment device 8 generally includes a power unit 81, a support assembly 82, a connecting assembly 83, a lens 85, and an ultrasonic transceiver 84. The support assembly 82 is located inside the housing 3 and below the control mechanism 4. The connecting assembly 83 is mounted on the support assembly 82. The lens 85 is connected to the connecting assembly 83. The power unit 81 is located inside the housing 3 and is connected to the control mechanism 4, the support assembly 82, and the connecting assembly 83. The ultrasonic transceiver 84 is integrated into the control mechanism 4 and exposed outside the housing 3. The ultrasonic transceiver 84 is used to acquire the distance value from the projection device to the ground and transmit this distance value to the control mechanism 4. The control mechanism 4 then drives the power unit 81 to control the projection lamp 2 to rise or fall according to the distance value, thereby adjusting the clarity of the projected light from the projection lamp 2.

[0069] In this embodiment, both the lens 85 and the ultrasonic transceiver 84 are existing technologies. The lens 85 is used to adjust the projected light of the projection lamp 2, and the ultrasonic transceiver 84 is used to obtain the distance value between the projection device and the ground. The control mechanism 4 then controls the power unit 81 to start based on the distance value between the projection device and the ground, so that the connecting assembly 83 drives the lens 85 to rise or fall, thereby adjusting the projected light of the projection lamp 2 and making the projected light of the projection lamp 2 clear.

[0070] Specifically, the ultrasonic receiving and transmitting device 84 emits ultrasonic waves to the ground and starts timing at the same time as the emission. The ultrasonic waves propagate in the air and return immediately when they encounter an obstacle. The ultrasonic receiving and transmitting device 84 stops timing immediately when it receives the reflected wave. The actual distance from the emission point to the obstacle is calculated based on the time difference between emission and reception, which is the distance from the projection device to the ground.

[0071] Please refer to further reading Figure 1 In a preferred embodiment of the projection device described above, the support assembly 82 generally includes a first support cylinder 821 and a second support cylinder 824. The first support cylinder 821 is vertically disposed inside the housing 3 and connected to the rear side of the bottom surface of the housing 3. The first support cylinder 821 is located below the control mechanism 4. A first opening 822, arranged axially along the front side of the first support cylinder 821, is formed. A first transverse through hole 823 is formed in the upper part of the first support cylinder 821. The second support cylinder 824 is vertically disposed inside the housing 3 and connected to the rear side of the bottom surface of the housing 3. The second support cylinder 824 is located below the control mechanism 4. A second opening 825, arranged axially along the front side of the second support cylinder 824, is formed. A second transverse through hole 826 is formed in the upper part of the second support cylinder 824. The first opening 822 and the second opening 825 are symmetrically arranged, and the first through hole 823 and the second through hole 826 are coaxially arranged. The first support cylinder 821 and the second support cylinder 824 are used to support the installation and operation of the power unit 81 and the connecting assembly 83.

[0072] Specifically, the lower end of the first support cylinder 821 is connected to the rear side of the bottom surface of the housing 3 via a threaded hole or weld. The first opening 822 is used for inserting the first connector between the inner edge of the lens 85 and the first segment of the first chain, so that the lens 85 can be raised or lowered without jamming. The first through hole 823 is used for inserting the motor power output shaft 812. The lower end of the second support cylinder 824 is connected to the rear side of the bottom surface of the housing 3 via a threaded hole or weld. The second opening 825 is used for inserting the second connector between the inner edge of the lens 85 and the second segment of the second chain, so that the lens 85 can be raised or lowered without jamming. The second through hole 826 is used for inserting the motor power output shaft 812.

[0073] Please refer to further reading Figure 1and Figure 2 In a preferred embodiment of the projection device described above, the power unit 81 generally includes a motor 811, a motor power output shaft 812, a first gear 813, and a second gear 814. The motor power output shaft 812 is connected to the motor 811 and is inserted into the first through hole 823 and the second through hole 826. The first gear 813 and the second gear 814 are both mounted on the motor power output shaft 812, with the first gear 813 located in the upper inner part of the first support cylinder 821 and the second gear 814 located in the upper inner part of the second support cylinder 824. The motor 811 drives the motor power output shaft 812 to rotate so that the first gear 813 and the second gear 814 rotate synchronously, thereby driving the first chain and the second chain of the connecting assembly 83 to rotate, thus raising or lowering the lens 85.

[0074] In this embodiment, both the first gear 813 and the second gear 814 have through holes in their middle portions for inserting and welding the motor power output shaft 812. The motor power output shaft 812 is inserted into the bearings of the first through hole 823 and the second through hole 826 to prevent friction from occurring when the motor power output shaft 812 rotates.

[0075] Please refer to further reading Figure 1 In a preferred embodiment of the projection device described above, the connecting assembly 83 generally includes a third gear 831, a fourth gear 832, a first chain (not shown in the figure), and a second chain (not shown in the figure). The third gear 831 is installed in the lower inner part of the first support cylinder 821. The first chain is disposed inside the first support cylinder 821 and fitted onto the third gear 831 and the first gear 813. The first segment of the first chain (not shown in the figure) is connected to the inner edge of the lens 85. The fourth gear 832 is installed in the lower inner part of the second support cylinder 824. The second chain is disposed inside the second support cylinder 824 and fitted onto the fourth gear 832 and the second gear 814. The second segment of the second chain (not shown in the figure) is connected to the inner edge of the lens 85, and the first segment of the first chain and the second segment of the second chain are arranged parallel to each other. The motor power output shaft 812 drives the first gear 813 and the second gear 814 to rotate, causing the third gear 831 and the fourth gear 832 to follow suit. This, in turn, causes the first and second chains to rotate, raising or lowering the lens 85 to adjust the clarity of the projected light from the projection lamp 2 illuminating the lens 85. The third gear 831 and the fourth gear 832 follow the rotation of the first gear 813 and the second gear 814 to drive the first and second chains, thus achieving power transmission.

[0076] In this embodiment, the first segment of the first chain and the inner edge of the lens 85 are connected by a first connector, which is a column with threads at both ends. Specifically, a first threaded hole is opened on the first segment, and a second threaded hole is opened on one side of the inner edge of the lens 85. The first connector is connected to the first threaded hole and the second threaded hole at both ends respectively to realize the installation of the lens 85.

[0077] In this embodiment, the second segment of the second chain and the inner edge of the lens 85 are connected by a second connector, which is a column with threads at both ends. Specifically, a third threaded hole is opened on the second segment, and a fourth threaded hole is opened on the other side of the inner edge of the lens 85. The second connector is connected to the third threaded hole and the fourth threaded hole at each end respectively to realize the installation of the lens 85.

[0078] In a second aspect, the present invention provides a dishwasher that includes the projection device described above.

[0079] The dishwasher provided by the present invention has a projection device installed on it, which has a bright projection effect and clear projected numbers, thereby improving the user experience.

[0080] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A projection device, characterized in that, The projection device includes a housing, a control mechanism, a photoresistor, and a projection lamp; The control mechanism is located inside the housing and connected to the housing. The photoresistor and the projection lamp are both integrated into the control mechanism. The photoresistor is used to acquire the external light intensity information of the housing and transmit the external light intensity information to the control mechanism so that the control mechanism can adjust the brightness of the projected light of the projection lamp according to the external light intensity information.

2. The projection device according to claim 1, characterized in that, The control mechanism includes a control board and an integrated board, the integrated board being mounted on the control board, and the control board being configured to adjust the brightness of the projected light from the projection lamp according to the external light intensity information.

3. The projection device according to claim 2, characterized in that, The photoresistor and the projection lamp are integrated on the integrated board, and the photoresistor is exposed on the outside of the housing.

4. The projection device according to claim 1, characterized in that, The housing includes an upper housing, a connecting plate, and a lower housing; The connecting plate extending laterally into the interior is pressed onto the lower end of the upper housing. The upper end of the lower housing and the inner edge of the connecting plate are integrally formed, and the upper end of the lower housing extends vertically downward below the inner edge of the connecting plate so that the bottom surface of the connecting plate is unobstructed.

5. The projection device according to claim 4, characterized in that, The control mechanism is mounted on the upper part of the connecting plate.

6. The projection device according to claim 1, characterized in that, The projection device also includes an adjustment device, which is disposed inside the housing and located on the path of the projection light of the projection lamp, for adjusting the clarity of the projection light of the projection lamp.

7. The projection device according to claim 6, characterized in that, The adjustment device includes a power unit, a support assembly, a connecting assembly, a lens, and an ultrasonic receiving and transmitting device. The support assembly is located inside the housing and below the control mechanism. The connecting assembly is mounted on the support assembly. The lens is connected to the connecting assembly. The power unit is located inside the housing and is connected to the control mechanism, the support assembly, and the connecting assembly respectively. The ultrasonic receiving and transmitting device is integrated into the control mechanism and exposed outside the housing. The ultrasonic receiving and transmitting device is used to obtain the distance value between the projection device and the ground, and transmit the distance value to the control mechanism, so that the control mechanism drives the power device and the connecting component according to the distance value, thereby controlling the projection lamp to rise or fall, so as to adjust the clarity of the projected light of the projection lamp.

8. The projection device according to claim 7, characterized in that, The support assembly includes a first support cylinder and a second support cylinder; The first support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The first support cylinder is located below the control mechanism. A first opening is provided on the front side of the first support cylinder along the axial direction of the first support cylinder. A first transverse through hole is provided on the upper part of the first support cylinder. The second support cylinder is vertically disposed inside the housing and connected to the rear side of the bottom surface of the housing. The second support cylinder is located below the control mechanism. A second opening is provided on the front side of the second support cylinder along the axial direction of the second support cylinder. A second transverse through hole is provided on the upper part of the second support cylinder. The first opening and the second opening are symmetrically arranged, and the first through hole and the second through hole are coaxially arranged.

9. The projection device according to claim 8, characterized in that, The power unit includes a motor, a motor power output shaft, a first gear, and a second gear; The motor power output shaft is connected to the motor and is inserted into the first through hole and the second through hole; Both the first gear and the second gear are mounted on the motor power output shaft, with the first gear located in the upper inner part of the first support cylinder and the second gear located in the upper inner part of the second support cylinder.

10. The projection device according to claim 9, characterized in that, The connecting assembly includes a third gear, a fourth gear, a first chain, and a second chain; The third gear is installed in the lower inner part of the first support cylinder, the first chain is disposed inside the first support cylinder and fitted onto the third gear and the first gear, and the first segment of the first chain is connected to the inner edge of the lens; The fourth gear is installed in the lower inner part of the second support cylinder, the second chain is disposed inside the second support cylinder and fitted onto the fourth gear and the second gear, the second segment of the second chain is connected to the inner edge of the lens, and the first segment of the first chain and the second segment of the second chain are arranged in parallel. The motor power output shaft is used to drive the first gear and the second gear to rotate, so that the third gear and the fourth gear follow suit and rotate, so that the first chain and the second chain rotate, thereby driving the lens to rise or fall, and adjusting the clarity of the projected light from the projection lamp that illuminates the lens.

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