CN220455663U - Film projector - Google Patents

Abstract

The utility model provides a film projector, which comprises a shell and a projection mechanism, wherein the projection mechanism comprises a projection lens and a projection light source, a film placing cavity is arranged in the shell, and a film disc and the projection light source are arranged in the film placing cavity; the projection lens penetrates through the side wall of the shell from the outer side of the shell to the film placing cavity; a plurality of film placing holes are arrayed on the circumferential direction of the circumferential wall of the film disc, and the driving mechanism is used for driving the circumferential wall of the film disc to rotate between the projection light source and the projection lens; one side of the shell forms an opening with the film placing cavity, a transparent cavity cover is arranged at the opening, the bottom of the transparent cavity cover is hinged with the bottom of the opening, and a film tray support is arranged at the bottom of the inner surface of the transparent cavity cover. The film is arranged on the peripheral surface of the film disc through the film disc designed into a cylinder shape, so that the number of the placed films is increased; the cavity cover is designed to be transparent and convenient to observe, the transparent cavity cover is hinged to an opening form and is provided with a film tray support, so that the film tray only needs to be placed on the film tray support, and alignment is automatically completed.

Description

Film projector

Technical Field

The utility model relates to the technical field of children projection, in particular to a film projector.

Background

The technology of existing projectors is quite mature and most projectors are used in movie theatres. The general fixed projector is composed of transmission, film conveying, optics, sound reproduction, machine body, electric appliance and the like, so that film playing is realized. The audio-visual product is a very vivid and visual education carrier for children education, and is particularly suitable for the physical and mental development of infants. However, the child projectors on the market at present have few single film pictures, so that the film discs need to be replaced frequently, and the projection effect cannot be experienced conveniently. The products in the market mostly adopt card type films, which are limited by structures, have fewer projection pictures and insufficient bearing inner capacity, so that the film disc needs to be replaced frequently; the film bin of the traditional projector is opened entirely to put in the film, the installation step is complicated, the film is required to be aligned and installed at the appointed position of the projector by opening the cover, the film can be covered by the bin cover, and at least two alignments are required.

Disclosure of Invention

In order to solve the above problems, an object of the present utility model is to provide a film projector, in which a film is set on a peripheral surface of a film tray by designing the film tray as a tube, and a number of the film is increased to increase a content capacity; the transparent cavity cover is designed into a transparent cavity cover which is convenient for observation, the transparent cavity cover is arranged into a form hinged and opened with the opening, and the film tray support is arranged, so that the film tray only needs to be placed on the film tray support, alignment is automatically completed, the transparent cavity cover is closed, and the installation of the film tray can be completed, and the film tray is convenient for loading.

The utility model is realized by the following steps: the film projector comprises a shell and a projection mechanism, wherein the projection mechanism comprises a projection lens and a projection light source, a film placing cavity is arranged in the shell, and a film tray and the projection light source are arranged in the film placing cavity; the projection lens penetrates through the side wall of the shell from the outer side of the shell to the film placing cavity and is opposite to the projection light source; the film disc is cylindrical, a plurality of film placing holes are arranged on the circumferential direction of the circumferential wall of the film disc in an array manner and used for placing films, and a driving mechanism is further arranged in the shell and used for driving the circumferential wall of the film disc to rotate between the projection light source and the projection lens; one side of the shell and the film placing cavity form an opening, a transparent cavity cover is arranged at the opening, the bottom of the transparent cavity cover is hinged with the bottom of the opening, and a film tray support is arranged at the bottom of the inner surface of the transparent cavity cover.

Preferably, a driven shaft is arranged at the center of the circle of the inner surface of the sealed end of the film tray, the driving mechanism comprises a driving shaft and a driving motor, the driving shaft is arranged at the center of the film placing cavity, the driving shaft is in transmission connection with the driven shaft, and the driving shaft is driven by the driving motor; the projection light source is arranged beside the driving shaft.

Preferably, the driving shaft is provided with a connecting hole, the inner peripheral surface of the connecting hole is provided with a plurality of limiting grooves in an array, the outer peripheral surface of the driven shaft is provided with a plurality of limiting blocks in an array, the driven shaft penetrates into the connecting hole, and the limiting blocks penetrate into the corresponding limiting grooves.

Preferably, a plurality of infrared identifiers are arranged in the film placing cavity around the driving shaft and avoid the projection light source; the inner surface of the closed end of the film disc is covered with infrared code dot paper.

Preferably, the film placing cavity is cylindrical, the film tray is buckled into the film placing cavity, a film state sensor is arranged on the peripheral surface of the film placing cavity, which is away from the projection lens, and a cavity cover state sensor is arranged at the hinged position of the transparent cavity cover and the opening.

Preferably, the transparent cavity cover is hinged with the bottom of the opening through a damping shaft.

Preferably, a buckling handle is arranged at the edge of the upper part of the outer surface of the transparent cavity cover, a first magnet is arranged at the position, adjacent to the buckling handle, of the peripheral surface of the transparent cavity cover, and a second magnet with opposite magnetism is arranged at the position, opposite to the first magnet, of the inner peripheral surface of the film placing cavity.

Preferably, a lock hook is arranged at the top of the peripheral surface of the transparent cavity cover, and a pressing lock catch is arranged at a position, opposite to the lock hook, of the inner peripheral surface of the film placing cavity and is used for being matched with the lock hook to lock the transparent cavity cover.

Preferably, a sound cavity adjacent to the film placing cavity is further arranged in the shell, a loudspeaker is arranged in the sound cavity, and a plurality of loudspeaker holes are formed in the surface of the shell opposite to the sound cavity; a sticker is arranged on the outer end face of the closed end of the film tray; foot pads are respectively arranged at four corners of the lower surface of the shell, and a handle is arranged on the upper surface of the shell.

Preferably, a power supply and a control circuit board are further arranged in the shell, a charging interface is arranged on the shell and used for charging the power supply, and the power supply is used for supplying power to the control circuit board.

The utility model has the beneficial effects that: compared with the prior art, the film projector provided by the utility model has at least the following technical effects: 1. the method comprises the steps that a traditional flaky film is arranged on the peripheral surface of a film disc with a hollowed-out middle part in a cylindrical shape, a projection light source is positioned in the film disc, the light source is emitted from the inside, passes through the film on the peripheral surface of the film disc, and projects image information through a projection lens, so that a continuous story can be played by rotating the film disc in a rotating projection mode; the form has stronger practical value for the multi-frame story film, meanwhile, the transparent cavity cover hinged with the shell is arranged, and the film tray bracket is arranged on the transparent cavity cover to simulate the form of tape discharge of a tape clamping machine, so that the film tray can be quickly and conveniently arranged in the film placing cavity without aligning twice like the traditional loading mode, and the film tray automatically completes alignment under the limiting action of the transparent cavity cover and the film tray bracket under the action of gravity, so that the film is simpler to install; the cavity cover is designed to be transparent, so that the condition of the film placing cavity can be observed, the working state of the film tray during showing is observed, and the film tray has more experience and fun for children. 2. The light source is not shielded when the film disc is rotated by arranging the driving shaft of the driving mechanism at the center and matching and driving the driven shaft at the center of the film disc; and the film tray is convenient to be quickly disassembled and assembled. 3. The surface of the film disc is provided with a sticker which is convenient for printing the film content brief introduction on the sticker, so that the film content can be clearly identified at a glance. 4. The damping shaft is arranged at the joint of the transparent cavity cover and the opening, so that the cavity cover is opened more in texture, and the switch cover is better in handfeel and better in experience.

Drawings

Fig. 1 is a schematic view of the external structure of a film projector according to the present utility model.

FIG. 2 is a schematic view of the cross-sectional structure of the A-A direction in FIG. 1.

Fig. 3 is a schematic view of a film projector of the present utility model with the transparent cover removed.

Fig. 4 is a schematic view of a film projector take-out tray according to the present utility model.

Fig. 5 is a schematic view of a film tray structure of a film projector according to the present utility model.

Fig. 6 is a schematic view of a film tray from another view of a film projector according to the present utility model.

Fig. 7 is a schematic diagram showing the connection between a magnetically attracted transparent cover and a housing bracket of a film projector according to the present utility model.

Fig. 8 is a schematic view of the B-B cross-sectional structure of fig. 7.

Fig. 9 is a schematic view of a magnetically attractable transparent cavity cover for a film projector according to the present utility model.

Fig. 10 is a schematic view showing the connection relationship between the latch hook type transparent cover of the film projector and the bracket in the shell.

FIG. 11 is a schematic view of the C-C cross-sectional structure of FIG. 10.

Fig. 12 is a schematic view of a film projector latch hook type transparent chamber cover according to the present utility model.

Fig. 13 is a schematic view showing a state in which a pressing buckle is mounted to a bracket in a film projector case according to the present utility model.

Reference numerals illustrate: 1-shell, 11-film placing cavity, 12-foot pad, 13-handle, 14-charging interface, 15-control button, 16-volume adjusting knob, 2-projection mechanism, 21-projection lens, 22-projection light source, 3-film tray, 31-film placing hole, 32-driven shaft, 33-film, 4-driving mechanism, 41-driving shaft, 411-connecting hole, 42-driving motor, 5-transparent cavity cover, 51-buckling handle, 52-first magnet, 53-second magnet, 54-latch hook, 55-pressing latch, 56-film tray bracket, 6-infrared identifier, 7-film state sensor, 8-cavity cover state sensor, 9-damping shaft and 10-loudspeaker.

Detailed Description

The utility model will be further described with reference to the drawings and specific examples.

Referring to fig. 1 to 13, a film projector includes a housing 1 and a projection mechanism 2, wherein the projection mechanism 2 includes a projection lens 21 and a projection light source 22, a film placing cavity 11 is provided in the housing 1, and a film tray 3 and the projection light source 22 are provided in the film placing cavity 11; the projection lens 21 penetrates through the side wall of the shell 1 from the outer side of the shell 1 to the film placing cavity 11 and is opposite to the projection light source 22; the film tray 3 is in a cylindrical shape, a plurality of film placing holes 31 are arrayed in the circumferential direction of the peripheral wall of the film tray 3 and are used for placing films 33, a driving mechanism 4 is further arranged in the shell 1, and the driving mechanism 4 is used for driving the peripheral wall of the film tray 3 to rotate between the projection light source 22 and the projection lens 21; one side of the shell 1 and the film placing cavity 11 form an opening, a transparent cavity cover 5 is arranged at the opening, the bottom of the transparent cavity cover 5 is hinged with the bottom of the opening, and a film tray bracket 56 is arranged at the bottom of the inner surface of the transparent cavity cover 5. The traditional flaky film is arranged on the peripheral surface of the film disc 3 with the hollow middle in a cylindrical shape, the projection light source 22 is positioned inside the film disc 3, the light source is emitted from the inside, passes through the film on the periphery of the film disc 3, and projects image information through the projection lens 21, so that a continuous story can be played by rotating the film disc 3 in a rotating projection manner; the form has stronger practical value for the multi-frame story film, and meanwhile, the transparent cavity cover 5 hinged with the shell 1 is arranged, and the film tray bracket 56 is arranged on the transparent cavity cover to imitate the tape releasing form of a tape clamping machine, so that the film tray 3 can be quickly and conveniently arranged in the film placing cavity 11, and the film can be more simply installed; the cavity cover is designed to be transparent, so that the condition of the film placing cavity 11 can be observed conveniently, the working state of the film tray 3 during showing again can be observed, and the film tray has more experience and fun for children. The film disc 3 adopts a cylindrical structure, realizes the holding capacity of 24 films and is superior to the similar products on the market.

Referring to fig. 1 to 6, preferably, a driven shaft 32 is disposed at the center of the inner surface of the closed end of the film tray 3, the driving mechanism 4 includes a driving shaft 41 and a driving motor 42, the driving shaft 41 is disposed at the center of the film placing cavity 11, the driving shaft 41 is in transmission connection with the driven shaft 32, and the driving shaft 41 is driven by the driving motor 42; the projection light source 22 is disposed beside the driving shaft 41. By arranging the driving shaft 41 of the driving mechanism 4 at the center and matching the driven shaft 32 at the center of the film tray 3 for transmission, the light source is not blocked when the film tray 3 is rotated; and the film tray 3 can be quickly disassembled and assembled.

Referring to fig. 1 to 6, preferably, the driving shaft 41 is provided with a connection hole 411, an inner circumferential surface of the connection hole 411 is provided with a plurality of limiting grooves in an array, an outer circumferential surface of the driven shaft 32 is provided with a plurality of limiting blocks in an array, the driven shaft 32 penetrates into the connection hole 411, and the limiting blocks penetrate into the corresponding limiting grooves. The driving mechanism 4 can drive the film tray 3 to rotate when the power of the driving shaft 41 is conveniently transmitted to the driven shaft 32. The third magnet is disposed in the connecting hole 411, and the driven shaft 32 is provided with an iron material, so that the driven shaft 32 and the driving shaft 41 can be conveniently fastened and fixed.

Referring to fig. 1 to 13, preferably, a plurality of infrared identifiers 6 are disposed around the driving shaft 41 in the film placement chamber 11 and avoid the projection light source 22; the inner surface of the closed end of the film disc 3 is covered with infrared code point paper. The preferred infrared identifier 6 is provided with six, and can identify the film content in cooperation with the infrared code dot paper, so that the played audio can correspond to the image, and meanwhile, each film position is also positioned, and the film 33 is driven to rotate through the driving shaft 41, so that the film content is accurately switched.

Referring to fig. 1 to 13, preferably, the film placing cavity 11 is cylindrical, the film tray 3 is fastened into the film placing cavity 11, a film state sensor 7 is disposed on a peripheral surface of the film placing cavity, which is away from the projection lens 21, and a cavity cover state sensor 8 is disposed at a hinge position of the transparent cavity cover 5 and the opening. The film state sensor 7 detects whether the film is accurately loaded, preferably an infrared sensor; the chamber lid state sensor 8 detects the open/close state of the transparent chamber lid 5, preferably, but not limited to, a photointerrupter.

Referring to fig. 1 to 13, the transparent chamber cover 5 is preferably hinged to the bottom of the opening through a damping shaft 9. The damping shaft 9 is arranged at the joint of the transparent cavity cover 5 and the opening, so that the opening of the cavity cover is more textured, and the switch cover has better hand feeling and better experience.

Referring to fig. 1 to 9, preferably, a latch pull 51 is disposed at an edge of an upper portion of an outer surface of the transparent cavity cover 5, a first magnet 52 is disposed at a position adjacent to the latch pull 51 on a peripheral surface of the transparent cavity cover 5, and a second magnet 53 having opposite magnetism is disposed at a position opposite to the first magnet 52 on an inner peripheral surface of the film placement cavity 11. The setting of detaining position handle 51 is convenient for transparent chamber lid 5 open, through setting up first, second magnet 53, the transparent chamber lid 5 of being convenient for and the quick actuation of casing 1 provide better opening and shutting experience.

Referring to fig. 1 to 6 and 10 to 13, preferably, a latch hook 54 is disposed at the top of the peripheral surface of the transparent cavity cover 5, and a pressing latch 55 is disposed at a position opposite to the latch hook 54 on the inner peripheral surface of the film placement cavity 11, so as to cooperatively lock the transparent cavity cover 5 with the latch hook 54. In the use process, the upper part of the transparent cavity cover 5 is pressed, so that the opening and closing state can be switched, and the picking and placing operation of the film tray 3 is realized. The surface of the transparent cavity cover 5 is not provided with a buckling handle 51.

Referring to fig. 1 to 4, preferably, a sound cavity adjacent to the film placing cavity 11 is further provided in the housing 1, a speaker 10 is provided in the sound cavity, and a plurality of speaker holes are provided on a surface of the housing 1 opposite to the sound cavity; a sticker (used for distinguishing different films and introducing film contents) is arranged on the outer end face of the closed end of the film tray 3; foot pads 12 are respectively arranged at four corners of the lower surface of the shell 1, and a handle 13 is arranged on the upper surface of the shell 1. The portable toy can be used for carrying, is also used as a modeling element, and increases interestingness; the shell 1 is designed with four foot pads 12, has more cartoon feel in shape, and also has the functions of placing and protecting products by the foot pads 12.

Referring to fig. 1 to 4, preferably, a power source (not shown) and a control circuit board (not shown) are further disposed in the housing 1, a charging interface 14 is disposed on the housing 1 for charging the power source, the power source is used for supplying power to the control circuit board, the control circuit board is electrically connected to the film status sensor 7, the infrared identifier 6, the cavity cover status sensor 8, the driving motor 42, and the projection light source 22, and is used for controlling the corresponding components to work, and the connection control between the control circuit board and each component is implemented by using a mature prior art, which does not require specific protection, so that detailed description is not developed.

Referring to fig. 1 to 4, preferably, the housing 1 is formed by splicing an upper housing and a lower housing; the projection lens 21 is adjustable in focal length, and the upper shell is further provided with a control button 15 and a volume adjusting knob 16 which are electrically connected with the control circuit. The surface of the shell 1 is round. The projection lens 21 is designed with a knob with a concave shape, and meanwhile, the inside is positioned through a fixed gasket and a screw to increase damping, so that good rotary handfeel is obtained when the focal length is adjusted; meanwhile, a replaceable decorative cover is designed on the lens decorative cover, and DIY replacement of a user is realized through movable glue; and the infrared recognition sensor which is in the same direction as the lens is also arranged, so that the projection is prevented from being directly projected to the human eye, and the projection can be detected and closed when the projection opening is opposite to the human body.

The utility model has the following working principle:

when in use, the transparent cavity cover 5 is opened by buckling the handle 51 or pressing the transparent cavity cover 5, the film disc 3 to be played is placed on the film disc supports 56 of the transparent cavity cover 5 (the film disc 3 can be positioned and placed by matching the transparent cavity cover 5 with the two film disc supports 56), and then the transparent cavity cover 5 is pressed, so that the transparent cavity cover 5 is completely buckled into the film placing cavity 11, and the loading of the film disc 3 is completed. Then the projector is started, the infrared identifier 6 works to identify the infrared code dot paper on the film tray 3, so that the content contained in each film can be determined, the driving mechanism drives and rotates, and further drives the driven shaft to rotate, so that the film tray rotates, and positioning correction is performed, so that the audio can be matched with the picture content (so that the film which needs to be initially played rotates to a projection station, namely, is positioned between the projection light source 22 and the projection lens 21). The projection light source is turned on, and the driving mechanism 4 drives the driving shaft 41 to rotate, so that the driven shaft 32 is driven to rotate, and the film reel 3 is rotated, so that continuous story pictures can be projected and played.

The points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed.

Secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to the general design, so that the same embodiment and different embodiments of the present disclosure may be combined with each other without conflict.

Finally, the above description is only a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples, but all technical solutions belonging to the concept of the present utility model are within the scope of the present utility model.

It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. A film projector, characterized by: the film projection device comprises a shell and a projection mechanism, wherein the projection mechanism comprises a projection lens and a projection light source, a film placing cavity is arranged in the shell, and a film disc and the projection light source are arranged in the film placing cavity; the projection lens penetrates through the side wall of the shell from the outer side of the shell to the film placing cavity and is opposite to the projection light source; the film disc is cylindrical, a plurality of film placing holes are arranged on the circumferential direction of the circumferential wall of the film disc in an array manner and used for placing films, and a driving mechanism is further arranged in the shell and used for driving the circumferential wall of the film disc to rotate between the projection light source and the projection lens; one side of the shell and the film placing cavity form an opening, a transparent cavity cover is arranged at the opening, the bottom of the transparent cavity cover is hinged with the bottom of the opening, and a film tray support is arranged at the bottom of the inner surface of the transparent cavity cover.

2. The film projector of claim 1, wherein: the center of the inner surface of the sealed end of the film tray is provided with a driven shaft, the driving mechanism comprises a driving shaft and a driving motor, the center of the film placing cavity is provided with the driving shaft, the driving shaft is in transmission connection with the driven shaft, and the driving shaft is driven by the driving motor; the projection light source is arranged beside the driving shaft.

3. A film projector as defined in claim 2, wherein: the driving shaft is provided with a connecting hole; the inner peripheral surface array of connecting hole is provided with a plurality of spacing recesses, the array is provided with a plurality of stoppers on the outer peripheral surface of driven shaft, the driven shaft penetrates in the connecting hole, the stopper penetrates corresponding in the spacing recess.

4. A film projector as defined in claim 2, wherein: a plurality of infrared identifiers are arranged in the film placing cavity around the driving shaft and avoid the projection light source; the inner surface of the closed end of the film disc is covered with infrared code dot paper.

5. The film projector as defined in claim 4, wherein: the film placing cavity is cylindrical, the film tray is buckled into the film placing cavity, a film state sensor is arranged on the peripheral surface of the film placing cavity, which is away from the projection lens, and a cavity cover state sensor is arranged at the hinged position of the transparent cavity cover and the opening.

6. The film projector of claim 1, wherein: the transparent cavity cover is hinged with the bottom of the opening through a damping shaft.

7. The film projector of claim 1, wherein: the edge on the upper portion of the outer surface of the transparent cavity cover is provided with a buckling handle, a first magnet is arranged on the position, adjacent to the buckling handle, of the peripheral surface of the transparent cavity cover, and a second magnet with opposite magnetism is arranged on the position, opposite to the first magnet, of the inner peripheral surface of the film placing cavity.

8. The film projector of claim 1, wherein: the top of transparent chamber lid global is provided with the latch hook, the inner peripheral surface in chamber is placed to the film with be provided with on the position that the latch hook is relative presses the hasp for with the latch hook cooperation locking transparent chamber lid.

9. The film projector of claim 1, wherein: a sound cavity adjacent to the film placing cavity is further arranged in the shell, a loudspeaker is arranged in the sound cavity, and a plurality of loudspeaker holes are formed in the surface of the shell opposite to the sound cavity; a sticker is arranged on the outer end face of the closed end of the film tray; foot pads are respectively arranged at four corners of the lower surface of the shell, and a handle is arranged on the upper surface of the shell.

10. The film projector of claim 9, wherein: the shell is internally provided with a power supply and a control circuit board, and the shell is provided with a charging interface for charging the power supply, and the power supply is used for supplying power to the control circuit board.