Improved film slide projector

Abstract

The invention discloses an improved film slide projector, and particularly relates to the technical field of image playing equipment, the improved film slide projector is characterized in that a magnetic attraction type remote controller fixing groove is formed in the side edge of a projector body, and a remote controller is fixed in an anti-falling mode through a magnetic attraction body; the playing bin, the sliding bin and the transmission bin are communicated in the machine body. A cartridge placement groove, a light adjusting bin and a light source bin are sequentially arranged in the playing bin, and a heat dissipation opening and a through hole are bidirectionally formed in the side rear of the light source bin. The bottom of the sliding bin is provided with a sliding rail block matched with the cartridge sliding groove. A cylindrical gear arranged in the transmission bin is meshed with a cartridge rack to drive the cartridge to move, a variable-speed double-gear is meshed with a rack of the push rod body, and the slides are accurately pushed into the cartridge containing groove through the push piece. The device has the advantages that the functions of magnetic attraction fixing, two-stage gear transmission and multidirectional heat dissipation are integrated, and the operation convenience, the projection positioning precision and the equipment reliability are synchronously improved.

Description

Technical Field

[0001] The present invention relates to the technical field of image playing equipment, and more particularly to an improved film slide projector. Background Art

[0002] Traditional film projectors are still widely used in professional image presentations and education, but existing equipment generally suffers from poor coordination between human-computer interaction and mechanical structure. For one thing, the remote control is often lost or damaged due to the lack of a dedicated storage structure, affecting operational continuity. For another, the transmission system often uses a single-stage gear or belt drive, which can easily cause slide positioning errors during film changes, resulting in misaligned projection images. Furthermore, inadequate heat dissipation can easily lead to overheating and degradation of the light source, while the enclosed machine compartment structure makes cartridge loading and unloading and maintenance cumbersome.

[0003] After searching, an existing patent (publication number: CN204044494U) discloses a slide projector, which includes: a chassis, an optical system, a rotating drum, a power board, a circuit board, a power supply ring, a motor, and a worm. The optical system includes a lens, a connecting drum, an optical sheet, and a light source. The optical system, the rotating drum, the power board, the circuit board, the power supply ring, the motor, and the worm are all located within the chassis. The light source is connected to the power supply ring, and the power supply ring is connected to the power board. The optical system is mounted on the rotating drum. The outer surface of the rotating drum is provided with a gear, the gear meshes with the worm, and the motor is connected to the worm. This achieves the technical effect that the slide projector can automatically rotate graphics dynamically and is easy to use. In the process of realizing the present invention, the inventor found that the existing technology has the following problems: the transmission mechanism is simple and cannot achieve automatic switching. Therefore, in order to solve the above problems, an improved film slide projector is proposed. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an improved film slide projector to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an improved film slide projector, comprising a body, a mount, a cartridge, a cover and a remote control,

[0006] The side wall of the body is provided with an inwardly recessed remote control fixing groove, and the bottom side of the remote control fixing groove is provided with at least one magnetic body mounting groove, in which a magnetic body is fixedly mounted, and is used to form a magnetic fit with a corresponding magnetic body built into the remote control housing; the interior of the body is provided with a playback compartment, a sliding compartment, a transmission compartment, and a component compartment that are interconnected, and the cover is fastened to the top plane of the body by a detachable screw structure, and the cover is provided with an OTA upgrade port located above the component compartment;

[0007] The front end of the playback chamber is connected to the bayonet through a threaded interface. The bayonet is available in various models to accommodate different lenses. Inside the bayonet, interconnected cartridge placement slots, a light adjustment chamber, and a light source chamber are sequentially arranged from front to back along the direction of light transmission. The side of the light source chamber is processed with an array of heat dissipation vents, and a circular through hole and a rocker-shaped switch are opened in the center of the rear side wall.

[0008] The bottom protrusion of the sliding bin is provided with a longitudinally extending sliding rail block, the front portion of the sliding rail block is provided with a rail block protrusion, the bottom of the cassette is provided with a slide groove, and a plurality of slide groove openings are provided in the slide groove at equal intervals. The cassette is slidably connected to the sliding rail block through the slide groove, and the end opening of the sliding bin is connected to the internal space of the transmission bin;

[0009] The transmission compartment comprises:

[0010] A cylindrical gear meshing with a cassette sliding rack provided along the sliding direction at the bottom of the cassette;

[0011] The speed change double gear is installed on the top front side of the transmission compartment;

[0012] A push rod guide rail is installed on the top of the transmission compartment through a detachable structure, and a push rod body is slidably embedded in the push rod guide rail;

[0013] One side of the push rod body is machined with a linear rack that meshes with the speed-changing dual gears. The end of the rack extends vertically downward to form a push-piece structure, and a radially protruding straightening piece clamp is provided in the middle. The transmission compartment is integrated with a drive mechanism and a controller for receiving wireless commands from the remote control and driving the cylindrical gear to move the cartridge. At the same time, the rotation of the speed-changing dual gears pushes the push rod body to accurately guide the external slide into the cartridge placement slot.

[0014] A limiting protrusion is provided at the bottom of the opening side of the cassette.

[0015] Preferably, the magnetic body installation groove is symmetrically arranged on the rear side groove wall of the remote control fixing groove, and the magnetic body installed therein is a permanent magnet or an electromagnet that can be controlled by electricity.

[0016] Preferably, the bottom edge of the machine cover extends downward to form a baffle plate, and when the machine cover is closed, the baffle plate covers the communication opening between the transmission compartment and the sliding compartment.

[0017] Preferably, the push piece at the end of the push rod body is an L-shaped piece, the horizontal pushing end surface of which is aligned with the entrance center line of the cartridge placement slot, and the thickness of the push piece matches the film channel gap of the cartridge placement slot.

[0018] Preferably, the hole wall of the heat dissipation port is provided with a customizable hollow decorative pattern, and the total area of ​​the hollow region accounts for more than 40% of the surface area of ​​the side wall where the heat dissipation port is located.

[0019] Preferably, the controller is internally integrated with a wireless signal receiving module, which can establish a two-way communication connection with the remote control.

[0020] Preferably, a high-brightness LED module is fixedly installed in the light source compartment, and the central axis of the light adjustment compartment, the bayonet and the through hole on the path on the front side coincides with the light-emitting axis of the LED module.

[0021] Preferably, the push rod guide rail is detachably connected to the transmission compartment by being embedded in a rectangular slot pre-opened on the top of the fuselage, and is finally pressed and fixed by a machine cover installed on the top.

[0022] Preferably, the drive mechanism includes two steering gears, and the output shafts of the two steering gears are respectively coaxially rigidly connected to the cylindrical gear and the transmission gear rotating shaft meshing with the speed change double gear pinion through a coupling.

[0023] Preferably, the outer contour size of the sliding rail block and the inner cavity size of the sliding groove at the bottom of the cassette form a clearance fit relationship, and the fitting clearance between the two is less than 0.1 mm to achieve smooth sliding.

[0024] The technical effects and advantages of the present invention are as follows:

[0025] The present invention realizes one-handed blind operation and storage through the magnetic remote control fixing groove on the side of the fuselage, and uses the magnetic body to automatically adsorb and position the remote control to prevent it from falling off; the rail groove matching structure of the sliding compartment and the cassette is adopted to simplify the loading and unloading process, and at the same time, the two-stage gear linkage system in the transmission compartment (cylindrical gear drives the cassette to move + variable speed double gear pushes the push rod body) accurately controls the slide pushing trajectory to ensure that the film is positioned without offset in the cassette placement slot; cooperates with the multi-directional heat dissipation channel of the light source compartment and the focusing system of the light adjustment compartment to improve the heat exchange efficiency while maintaining the stability of the optical path, and ultimately achieves the simultaneous optimization of operation convenience, projection accuracy and equipment reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0028] Figure 3 It is a schematic diagram of the local internal structure of the present invention.

[0029] Figure 4 It is a structural schematic diagram of the fuselage of the present invention.

[0030] Figure 5 Schematic diagram of the structure of the cassette connection of the present invention.

[0031] Figure 6 This is a schematic structural diagram of the cartridge of the present invention from the first perspective.

[0032] Figure 7 2 is a schematic structural diagram of the cartridge of the present invention from a second viewing angle.

[0033] Figure 8 It is a structural schematic diagram of the push rod guide rail mechanism of the present invention.

[0034] Figure 9 It is a structural schematic diagram of the machine cover of the present invention.

[0035] The accompanying drawings are marked as follows: 1. Body; 11. Remote control fixing slot; 111. Magnetic body installation slot; 12. Playback compartment; 121. Cartridge placement slot; 122. Light adjustment compartment; 123. Light source compartment; 1231. Heat dissipation vent; 1232. Through hole; 1233. Rocker switch; 13. Sliding compartment; 131. Sliding rail block; 1311. Rail block protrusion; 14. Transmission compartment; 141. Cylindrical gear; 142. Speed-changing double gear; 143. Push rod guide rail; 144. Push rod body; 145. Rack; 146. Straightening plate clamp; 15. Component compartment; 2. Bayonet; 3. Cartridge; 31. Slide groove; 311. Slide groove opening; 32. Cartridge sliding rack; 33. Limiting protrusion; 4. Machine cover; 41. Baffle plate; 42. OTA upgrade port; 5. Remote control. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] As attached Figure 1-9 The improved film slide projector shown in the figure comprises a body 1, a mount 2, a cartridge 3, a cover 4 and a remote control 5.

[0039] The side wall of the body 1 is provided with an inwardly recessed remote control fixing groove 11. The bottom side of the remote control fixing groove 11 is provided with at least one magnetic body mounting groove 111, in which a magnetic body is fixedly mounted, for forming a magnetic engagement with a corresponding magnetic body built into the housing of the remote control 5. The interior of the body 1 is provided with a interconnected playback compartment 12, a sliding compartment 13, a transmission compartment 14, and a component compartment 15. The cover 4 is fastened to the top plane of the body 1 by a detachable screw structure. The cover 4 is provided with an OTA upgrade port 42 above the component compartment 15.

[0040] The front end of the playback chamber 12 is connected to the mount 2 via a threaded interface. The mount 2 is available in various sizes to accommodate different lenses. Inside, along the light transmission direction, a cartridge placement slot 121, a light adjustment chamber 122, and a light source chamber 123 are interconnected. The light source chamber 123 has an array of heat dissipation vents 1231 on its side, and a circular through-hole 1232 and a rocker-shaped switch 1233 are located in the center of the rear sidewall.

[0041] The bottom protrusion of the sliding compartment 13 is provided with a longitudinally extending sliding rail block 131, and the front portion of the sliding rail block 131 is provided with a rail block protrusion 1311. The bottom of the cassette 3 is provided with a slide groove 31, and a plurality of slide groove openings 311 are provided within the slide groove 31 at equal intervals. The cassette 3 is slidably connected to the sliding rail block 131 through the slide groove 31, and the distal end opening of the sliding compartment 13 is connected to the interior space of the transmission compartment 14.

[0042] The transmission compartment 14 is composed of:

[0043] A cylindrical gear 141 meshing with the cassette sliding rack 32 provided along the sliding direction at the bottom of the cassette 3;

[0044] A speed change double gear 142 mounted on the top front side of the transmission compartment 14;

[0045] A push rod guide rail 143 is detachably mounted on the top of the transmission compartment 14 , and a push rod body 144 is slidably engaged in the push rod guide rail 143 ;

[0046] One side of the push rod body 144 is machined with a linear rack 145 that meshes with the speed-changing dual gear 142. The distal end of the rack extends vertically downward to form a push-piece structure, and a radially protruding straightening plate clamp 146 is provided in the middle. The transmission compartment 14 integrates a drive mechanism and controller for receiving wireless commands from the remote control 5 and driving the cylindrical gear 141 to move the cartridge 3. Simultaneously, the rotation of the speed-changing dual gear 142 pushes the push rod body 144 to precisely guide the external slide into the cartridge placement slot 121.

[0047] A limiting protrusion 33 is provided at the bottom of the opening side of the cassette 3 .

[0048] Among them: the side wall of the fuselage 1 is processed with a rectangular remote control fixing groove 11, and two cylindrical magnetic body installation grooves are pre-buried at the bottom of the groove and embedded with neodymium iron boron magnets; the OTA upgrade port 42 is used to plug in the wire, and the component compartment device is connected to refresh the firmware. The playback compartment 12 is connected to the bayonet 2 through the front screw hole bolt, and the interior is separated by a partition into a cartridge placement slot 121, a light adjustment compartment 122 and a light source compartment 123, wherein the cartridge placement slot 121 and the sliding compartment 13, the heat dissipation port 1231 of the light source compartment 123 is a honeycomb array hole, and the rear through hole 1232 is used to install a cooling fan; the shaft of the cylindrical gear 141 in the transmission compartment 14 is connected to the output end of the stepper motor, and the functional components such as the controller communicator are installed inside the component compartment 15, and the push rod The guide rail 143 is embedded and connected through the slot on the body 1. The thickness of the push rod body 144 matches the thickness of the cartridge placement slot 121. The working process is that the cartridge 3 is pushed along the sliding rail block 131 until the rack 32 meshes with the cylindrical gear 141. The remote control command triggers the stepping motor to rotate the gear, driving the cartridge to move and position. The speed-changing dual gear 142 drives the push rod body 144 forward, and the push piece pushes the slide into the center of the cartridge placement slot 121. The rail block protrusion 1311 on the sliding rail block 131 cooperates with the slide slot opening 311 inside the slide slot 31. When the cartridge 3 moves to the corresponding position, the corresponding slide inside the cartridge 3 is lifted to be flush with the limit protrusion 33, so that it can be smoothly pushed into the cartridge placement slot 121.

[0049] Example 2

[0050] Based on the first embodiment, the solution in the first embodiment is further detailed in combination with the following specific working methods, as described below:

[0051] like Figure 1-9 As shown in the figure, as a preferred embodiment, magnetic mounting slots 111 are symmetrically arranged on the rear wall of the remote control fixing slot 11. The magnetic bodies installed therein are permanent magnets or electrically controllable electromagnets. Furthermore, the magnetic mounting slots of the remote control fixing slot 11 are symmetrically located on the rear side of the slot, near the back of the device, and each is embedded with a permanent magnet. A ferrite ring of the same specification is embedded in a corresponding position on the housing of the remote control 5, and the attraction force between the two is ≥3N. When the remote control is placed in the fixing slot, the magnetic bodies automatically align and attract, ensuring a gap of ≤0.2mm between the bottom surface of the remote control and the bottom of the slot. Even if the device tilts, there is no risk of it falling out.

[0052] In this embodiment, the bottom edge of the cover 4 extends downward to form a baffle 41. When the cover 4 is closed, the baffle 41 covers the communication opening between the transmission compartment 14 and the sliding compartment 13. Furthermore, when the cover 4 is installed on the fuselage 1, the baffle 41 is located at the opening between the transmission compartment 14 and the sliding compartment 13, so that only the cylindrical gear 141 below is exposed, thereby ensuring the spatial isolation of each compartment.

[0053] In this embodiment, the pusher blade at the end of the push rod body 144 is an L-shaped member. Its horizontal pusher end face is aligned with the centerline of the entrance of the cartridge receiving slot 121, and the thickness of the pusher blade matches the gap in the film passage of the cartridge receiving slot 121. Furthermore, the pusher blade at the end of the push rod body 144 is an L-shaped member. After installation, the bottom edge of the pusher blade is away from the upper surface of the slide pushing passage of the cartridge 3, and the horizontal section extends into the passage. During pushing, the horizontal section of the pusher blade fully supports the edge of the film, preventing bending damage.

[0054] In this embodiment, the hole wall of the heat dissipation port 1231 is provided with a customizable hollow decorative pattern, and the total area of ​​the hollow area accounts for more than 40% of the surface area of ​​the side wall where the heat dissipation port is located. Furthermore, the heat dissipation port 1231 of the light source compartment 123 can be hollowed out by itself. In this example, a honeycomb base hole pattern is adopted, and the hollow area accounts for ≥40% to ensure heat dissipation.

[0055] In this embodiment, a wireless signal receiving module is integrated inside the controller, which can establish a two-way communication connection with the remote control 5. Furthermore, the wireless receiving module of the controller supports the signal strength transmitted by the remote control 5. During operation, the user presses the button of the remote control to realize functions such as device slicing and light intensity adjustment.

[0056] In this embodiment, a high-brightness LED module is fixedly installed in the light source compartment 123, and the center axis of the light adjustment compartment 122, the bayonet 2 and the through hole on the front side coincide with the light-emitting optical axis of the LED module. Furthermore, different types of lamp groups can be fixed in the light source compartment 123, and the deviation between the center point of the through hole on the front side of the path and the optical axis of the LED module is less than 0.05°, and a cooling fan is installed in the through hole 1232.

[0057] In this embodiment, the push rod guide rail 143 forms a detachable connection with the transmission compartment 14 by being embedded in a rectangular slot pre-opened on the top of the fuselage 1, and is finally pressed and fixed by the machine cover 4 installed on the top. Furthermore, the bottom of the push rod guide rail 143 is embedded in the rectangular slot pre-opened on the top of the fuselage 1 to form a limit, and then the pre-tightening force is applied by pressing down the machine cover 4 to eliminate shaking.

[0058] In this embodiment, the drive mechanism includes two servos, and the output shafts of the two servos are respectively coaxially rigidly connected to the cylindrical gear 141 and the transmission gear rotating shaft meshing with the small gear of the speed change double gear 142 through a coupling. Furthermore, the output shaft of the servo is rotated by driving the cylindrical gear 141 and the speed change double gear 142 through the coupling.

[0059] In this embodiment, the outer contour size of the sliding rail block 131 and the inner cavity size of the bottom slide groove 31 of the cassette 3 form a clearance fit relationship, and the fitting clearance between the two is less than 0.1mm to achieve smooth sliding. Furthermore, the surface of the sliding rail block 131 and the cassette slide groove 31 are embedded with a wear-resistant bushing, and the fitting clearance between the two is 0.08-0.1mm.

[0060] The working process of the present invention is as follows:

[0061] 1. Equipment startup preparation

[0062] The user places the cassette 3 into the sliding compartment 13, starts the device through the rocker switch 1233, and the controller connects the drive mechanism; at this time, the cassette sliding rack 32 is fully engaged with the cylindrical gear 141 in the transmission compartment 14, and then the cassette 3 can be driven to move along the sliding rail block 131 of the sliding compartment 13.

[0063] 2. Cassette positioning and film changing operation

[0064] A film change command is sent via the remote control 5 , and the controller drives the cylindrical gear 141 to rotate clockwise, engaging the cassette rack 32 and pushing the cassette 3 horizontally along the sliding track block 131 to the target slide position. The track block protrusion 1311 cooperates with the slide slot opening 311 to lift the corresponding slide until it is flush with the top surface of the limit protrusion 33. Subsequently, the speed-changing dual gear 142 rotates clockwise under the action of the transmission gear and the servo. The rack 145 of the push rod body 144 engages and drives the push rod body 144 to slide linearly within the push rod guide 143 toward the cassette 3. The L-shaped push piece at the end inserts into the slide push channel of the cassette 3, accurately pushing the single film into the center of the cassette placement slot 121 of the playback chamber 12.

[0065] 3. Optical projection execution

[0066] A light source excitation command is sent via remote control 5, illuminating the LED module in light source compartment 123. The brightness can be adjusted in three levels, controlled by the same remote control button. A long press on the rear switch of the remote control activates the brightness. When this is activated, the display is locked and film change is impossible (power limitation). Light travels from light source compartment 123 through the through-holes in the front path and sequentially enters light adjustment compartment 122. It is refracted by the reflector and focused by the condenser, then penetrates the slide in cartridge slot 121 to form an image, ultimately outputting the projected image from mount 2. Heat dissipation vent 1231 cooperates with the cooling fan installed in circular through-hole 1232 to synchronously exhaust the hot air flow.

[0067] 4. Finish using and store the remote control

[0068] After use, flip the rocker switch 1233 to turn off the light source and reset the push rod 144 to the initial position of the slide compartment 13. The push rod 144 and the straightening clip 146 bring the slide back to the corresponding position in the cartridge 3. Then, the remote control 5 is placed in the fixing slot 11 on the side of the body. The magnet at the bottom of the slot and the magnet inside the remote control are automatically attracted and locked.

[0069] 5. Cassette unloading maintenance

[0070] Open the screw fixing structure of the cover 4, reversely drive the cylindrical gear 141 to return the cassette 3 to the entrance of the sliding compartment 13, directly pull out the cassette horizontally, and disassemble the push rod guide rail 143 through the buckle to replace the worn push plate.

[0071] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0072] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0073] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An improved film slide projector, comprising a body (1), a bayonet (2), a cartridge (3), a cover (4) and a remote controller (5), characterized in that: The side wall of the body (1) is provided with a remote control fixing groove (11) that is recessed inwards, and the bottom side of the remote control fixing groove (11) is provided with at least one magnetic body installation groove (111) and a magnetic body is fixedly installed therein for forming a magnetic fit with a corresponding magnetic body built into the housing of the remote control (5); the interior of the body (1) is provided with a play compartment (12), a slide compartment (13), a transmission compartment (14) and a component compartment (15) that are interconnected, and the cover (4) is fastened to the top plane of the body (1) by a detachable screw structure, and an OTA upgrade port (42) is provided on the cover (4) located above the component compartment (15); The front end of the playback chamber (12) is connected to the bayonet (2) via a threaded interface. The bayonet (2) has various models and can be adapted to different lenses. The interior of the bayonet (12) is provided with a cartridge placement slot (121), a light adjustment chamber (122), and a light source chamber (123) that are interconnected and arranged in sequence from front to back along the light transmission direction. The side of the light source chamber (123) is processed with an array-type heat dissipation outlet (1231), and a circular through hole (1232) and a rocker-shaped switch (1233) are opened at the center of the rear side wall. The bottom protrusion of the sliding bin (13) is provided with a longitudinally extending sliding rail block (131), the front of the sliding rail block (131) is provided with a rail block protrusion (1311), the bottom of the cassette (3) is provided with a slide groove (31), the inside of the slide groove (31) is provided with a plurality of slide groove openings (311) at equal intervals, which pass through the slide mounting groove inside the cassette (3), the cassette (3) is slidably connected to the sliding rail block (131) through the slide groove (31), and the end opening of the sliding bin (13) is communicated with the internal space of the transmission bin (14); The transmission chamber (14) comprises: A cylindrical gear (141) meshing with a cassette sliding rack (32) provided along the sliding direction at the bottom of the cassette (3); A speed-changing double gear (142) mounted on the top front side of the transmission compartment (14); A push rod guide rail (143) is installed on the top of the transmission compartment (14) through a detachable structure, and a push rod body (144) is slidably engaged inside the push rod guide rail (143); One side of the push rod body (144) is processed with a linear rack (145) that meshes with the speed-changing double gear (142), the end of which extends vertically downward to form a push piece structure, and a radially protruding straightening piece clamp (146) is provided in the middle; the transmission chamber (14) is internally integrated with a driving mechanism and a controller for receiving wireless instructions from the remote control (5) and driving the cylindrical gear (141) to drive the cassette (3) to move, and at the same time, the rotation of the speed-changing double gear (142) pushes the push rod body (144) to accurately guide the external slide into the cassette placement slot (121); A limiting protrusion (33) is provided at the bottom of the opening side of the cassette (3).

2. The improved film slide projector according to claim 1, characterized in that: The magnetic body installation groove (111) is symmetrically arranged on the rear side groove wall of the remote control fixing groove (11), and the magnetic body installed therein is a permanent magnet or an electromagnet that can be controlled by electricity.

3. The improved film slide projector according to claim 1, characterized in that: The bottom edge of the machine cover (4) extends downward to form a baffle plate (41). When the machine cover (4) is closed, the baffle plate (41) covers the communication opening between the transmission compartment (14) and the sliding compartment (13).

4. The improved film slide projector according to claim 1, characterized in that: The push piece at the end of the push rod body (144) is an L-shaped piece, the horizontal push end surface of which is aligned with the entrance center line of the cartridge placement slot (121), and the thickness of the push piece matches the film channel gap of the cartridge placement slot (121).

5. The improved film slide projector according to claim 1, characterized in that: The hole wall of the heat dissipation opening (1231) is provided with a customizable hollow decorative pattern, and the total area of ​​the hollow region accounts for more than 40% of the surface area of ​​the side wall where the heat dissipation opening is located.

6. The improved film slide projector according to claim 1, characterized in that: The controller is internally integrated with a wireless signal receiving module, which can establish a two-way communication connection with the remote controller (5).

7. The improved film slide projector according to claim 1, characterized in that: A high-brightness LED module is fixedly installed in the light source compartment (123), and the central axis of the light adjustment compartment (122), the bayonet (2) and the through hole on the front side coincides with the light-emitting axis of the LED module.

8. The improved film slide projector according to claim 1, characterized in that: The push rod guide rail (143) is detachably connected to the transmission compartment (14) by being embedded in a rectangular slot pre-opened on the top of the machine body (1), and is finally pressed and fixed by the machine cover (4) installed on the top.

9. The improved film slide projector according to claim 1, characterized in that: The driving mechanism comprises two steering gears, the output shafts of the two steering gears being coaxially rigidly connected to the cylindrical gear (141) and the transmission gear rotating shaft meshing with the small gear of the speed-changing double gear (142) through couplings.

10. The improved film slide projector according to claim 1, characterized in that: The outer contour size of the sliding rail block (131) and the inner cavity size of the bottom slide groove (31) of the cassette (3) form a clearance fit relationship, and the fit clearance between the two is less than 0.1 mm to achieve smooth sliding.

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