CN2085071U - Miniature slide projector - Google Patents

Abstract

The miniature slide projector is composed of a lens, a core box device, a bracket, a shell and a power supply element. The machine is composed of 7 lenses to form a short focal length and clear projection optical path system, and uses a 12V, 100W electronic transformer with a very small external volume and weight. Its focusing lens and light source bulb are installed in the core box to form an integral core box device. The device is placed on the bottom plate of the bracket to form a sliding connection, and can use the opening of the shell to drive the core box away from the lens to the projection focal length. On the contrary, when the shell is closed, the core box device is close to the lens to reduce the volume. The utility model has a small volume, light weight, low cost, and is suitable for teaching, scientific research, enterprises and families.

Description

The utility model relates to a miniature slide projector belonging to projecting equipment.

Existing slide projectors, such as popular slide projectors (82-1A), manual slide projectors (FH-50) and automatic slide projectors (FHY-50) produced in my country, use iron-core transformers inside the machine and optical path systems with longer focal lengths. Its slide projector has a large volume, heavy weight, high price, and is not easy to carry around, so it is only suitable for professional occasions, and is not suitable for the requirements of family and popular teaching. Chinese patents such as small-sized automatic film-moving 16mm slide projector (86209152) and multifunctional writing slide projector (89200939), except having the above-mentioned shortcoming, also have the deficiency of complicated structure. The miniature slide projector of the utility model is designed with a novel structure, which can realize innovative effects of reducing volume, reducing weight, reducing cost, improving photographic definition and beautiful appearance.

The purpose of the design of the utility model is to overcome the deficiencies of the existing slide projectors, and adopt a novel design structure to reduce the volume, reduce the weight, reduce the cost, improve the clarity of photography, and have the functions of manual, automatic rewinding and automatic film rolling, so that It is a mini slide projector widely used in teaching, scientific research, business and family.

The utility model is for realizing above-mentioned purpose, adopts novel structure and technical measures in structural design as follows: 1. the optical path system of slide projector is designed as 7 mirror optical path systems of 3 mirrors in the lens and 4 mirrors in the core box, This optical path system can reduce the focal length of the slide projector and help improve the clarity of photography; 2. The four concentrating lenses and the light bulb are designed as an integral structure in the core box. This overall structure is relatively simple, which is beneficial to the concentrating lens. 3. The core box and bracket of the slide projector are designed such that the slide plate on the bottom of the core box is installed in the chute of the parallel slats on the bottom plate of the bracket to form a moving structure for the focal length, so that the core box can be moved away from the lens to reach the The focal length required by the optical path system, move the core box close to the lens to reduce the volume of the slide projector when the machine is stopped; 4. The shell of the slide projector is designed to be fixed with screws on the bottom corner and two walls on the protruding lugs at the end of the parallel slats on the bottom plate of the bracket, and make the shell The inner convex cylinders on the inner two walls are just slidingly stuck in the protruding grooves on the two outer walls of the light source chamber of the core box to form a push-pull structure of the core box, so that the core box is pulled away from the lens when the shell is opened upwards, and the shell pushes the core box on the contrary. The box is close to the lens; 5. The lens is designed so that the protruding screw pin on the lens body extends into the spiral groove hole of the lens slider, so that turning the lens shell left and right can drive the lens of the lens to move back and forth to fine-tune the projection clarity of the slide projector; 6. The transformer of the slide projector is designed as a 12V, 100W electronic transformer composed of high-flux magnetic cores, semiconductor components and circuits. Its volume and weight are small, and it can be placed outside the machine and connected with power cords, switches and plugs to form the power supply of the slide projector. Components; 7. The window connected to the concentrator of the core box is designed to have vertical and parallel grooves on the two outer sides. window, so that the slide projector has the functions of manual, automatic and automatic film winding.

In short, the miniature slide projector designed and manufactured according to the above-mentioned new structure and technical measures can achieve small size, light weight, and low cost. Practicality for a wide range of business and home use.

Use embodiment below, and in conjunction with accompanying drawing, the utility model is described in detail as follows:

Fig. 1 is a sectional structure general diagram of a miniature slide projector.

Fig. 2 is A-A sectional view of the miniature slide projector.

Fig. 3 is a BB sectional view of the micro slide projector.

The utility model is shown in Figure 1, and it is made of camera lens (12,29～36), core box device (2,15,17,18,20～26,37), support (3), shell (1), Power supply elements (4-8), connecting screws (13, 14, 16, 38) and machine bases (9, 10) are composed. Wherein lens as shown in Figure 1, it is made of eyeglass (29,30,31), spacer ring (33,34), lens sliding body (35), mirror body (36), lens housing (32) and screw pin ( 12) Composition, the lens uses the outer end of the screw pin (12) on the outer surface of the right part of the mirror body (36) to extend into the spiral slot hole (35-1) on the right part of the lens slider (35) to form a fine adjustment of the lens structure, the fine-tuning structure can use the lens housing (32) to rotate left and right to promote the mirror body to drive the lens lenses (29, 30, 31) to move back and forth to fine-tune the definition of projection projection. The right helical groove hole (35-1) of the lens sliding body (35) is slidingly connected with the screw pin (12), the inner circular surface is slidingly connected with the outer circular surface of the mirror body (36), and the outer step of the left end is connected with the bracket (3 ) The central hole at the top of the vertical plate is fixedly connected. The mirror body (36) is an annular cylinder that places eyeglasses (29, 30, 31), spacers (33, 34) and connects the lens case (32) and the screw pin (12). Three eyeglasses (29, 30, 31) and 2 spacers (33, 34) are placed in the left inner cylinder of mirror body (36), and are compressed and fixed with lens case (32). One end of the screw pin (12) is fixed on the outer circle of the right end of the mirror body (36), and the other end slides into the right helical slotted hole (35-1) of the lens sliding body (35). The right screw hole of the lens housing (32) is fixed on the left end of the mirror body (36), and the end face of the inner stage hole is pressed against the eyeglass (29). The core box device is shown in Figures 1, 2, and 3. It is a box-shaped combination that integrates light-gathering sheets (20, 21, 22, 23) and light source elements (17, 18, 24, 25, 26) structure, the outer convex sliding plate (2-2) on the bottom surface of the left side wall of the core box (2) of the core box device slides and cooperates with the groove (3-1) on the inner side of the parallel slat on the bottom plate of the bracket (3) to form a core The sliding structure for the movement of the box device, the protruding grooves (2-1) on the two outer walls of the right part of the core box (2) are slidingly connected with the protruding cylinders (1-1) on the two inner walls of the shell (1), and are used Screws (13) movably fix the two side walls of the lower left corner of the shell (1) on the lug at the right end of the parallel slats on the bottom plate of the support (3) to form a push-pull structure for the movement of the core box device. And the core box (2) of the core box device is a rectangular connection box with a concentrating chamber and a light source chamber, and the two side walls and the inner top surface of the concentrating chamber on the left have concave grooves suitable for installing concentrating lenses (20, 22) and heat-insulating lens (21), and use screws (14, 16) to fix the lens card (15) on the lower end surface of the left and right hole walls of the concentrating chamber to clamp the lens (20, 21, 22), right hole Place the condenser lens (23) in the left step hole of the wall and fix the pressure lens (37) on the right hole wall with a screw (38) to compress the lens (23). Fixed connection, the convex sliding plate (2-2) on the bottom surface of the two side walls is slidingly connected with the groove (3-1) on the inner side of the parallel slat on the bottom plate of the bracket (3), and the top surface of the concentrating chamber and the outer wall have a convex shape Radiating ribs, vertical protruding grooves (2-1) on the outer wall of the light source chamber on the right side of the core box (2), the grooves at the upper end are suitable for clamping and fixing the hanging ears (25-1) of the cover frame (25) The cover frame, while the lower groove is slidingly connected with the protruding cylinders (1-1) on the two inner walls of the shell (1), and the inner protruding lugs (2-3) with screw holes at the lower ends of the two side walls of the middle part are connected with the lamp holder ( 17) Fix the connection with screws, and use the lamp socket (18) on the upper end of the lamp holder (17) to fix the light bulb (24), and the inner convex lug with screw holes at the right end of the bottom surface of the two side walls and the rear seat (9) are fixed with screws Connection, the bottom square hole of the right end wall is suitable for the power supply socket (8) of the power supply element to pass and be inserted on the lamp holder (17). And the cover frame (25) in the light source room is a lower opening that is located in the right light source room of the core box (2) and covers the lower opening outside the bulb (24), the left end opening expands, the right end hole has a card and the two outer sides of the upper end have lugs ( 25-1) square cover, reflective bowl (26) is installed in the right end hole of cover frame (25) and clamps with the card of hole limit. Bracket (3) is an angled plate surface bracket, the center hole on the top of its left vertical plate is suitable for fixed connection with the lens slider (35) of the lens, and the grooves (3-1 ) is slidingly connected with the convex sliding plate (2-2) on the bottom surface of the left side wall of the core box, the screw holes on both sides of the left end of the bottom plate are fixedly connected with the front seat (10), and the horizontal reinforcement between the right parts of the parallel slats There is a screw hole (3-2) in the middle of the board, which is suitable for screwing connection with the outer support frame of the slide projector, and the upper protruding lug with the screw hole at the right end of the parallel slat is fixed to the bracket (1) in rotation through the screw (13). 3) On the lug at the right end of the parallel slats. The shell (1) is a shell with openings at both ends and the lower bottom. The round holes at the lower right corners of the two side walls are connected with the screws (13) in rotation and fixed on the right end lugs of the parallel slats of the bracket (3). The through hole in the upper left corner is used to fix the manual disc (11), and the protruding cylinders (1-1) on the lower part of the two inner walls are slidingly connected with the protruding grooves (2-1) on the two outer walls of the core box (2) , thus when the casing (1) is opened upward around the screw (13), the core box device is pulled to move to the right, and the core box device is pushed to move to the left on the contrary. The power supply element is shown in Figure 1, which is connected in series by the power plug (4), power switch (5), power cord (6), electronic transformer (7) and power socket (8) to form the external power supply element of the mini slide projector. Among them, the electronic transformer is a 12V, 100W miniature electronic transformer composed of a high magnetic flux core, semiconductor components and circuits. The window (27) of the present utility model can be used in three forms of manual, automatic and automatic film rolling. It is inserted into the grooves (19-1) on both sides of the window (19) through the cards on both sides of the right side of the card body (28). In the process, the form (27) with the card body (28) can be installed on the slide projector.

The micro-slide projector sample manufactured according to the above embodiment has an overall size of 135×60×90mm, a weight of 600-700g/unit, a power of 100W, a fixed focal length lens of f50, an effective luminous flux ≥ 110.8Lu, a clear image at a distance of 6M from the screen, and uniformity of illumination 39%, and the cost is about 140 yuan/set.

Claims (3)

1, a kind of slide projector, it is by camera lens (29～36,12), core box device (2,15,17,18,20～26,37), support (3), shell (1), power supply component (4～8) and attachment screw (13,14,16,38) with support (9,10) form, it is characterized in that the core box device be one with light-collecting lens (20,21,22,23) and light source component (17,18,24,25,26) integrant box-like unitized construction, the parallel strip medial surface groove (3-1) of the evagination slide plate (2-2) of bottom surface, the core box of this core box device (2) left part two side and support (3) base plate is slidingly matched and constitutes the slide construction that the core box device moves, protrusion cylinder (1-1) on protrusion groove (2-1) on core box (2) right part two lateral walls and shell (1) two madial wall is slidingly connected, and shell (1) two side, the lower left corner is fixed on versatilely the push-pull configuration that formation core box device moves on the parallel strip right-hand member lug of support (3) base plate with screw (13).And the core box of core box device (2) is the rectangle connecting box of a band optically focused chamber and light source chamber, two side that its left part optically focused is indoor and inner top surface have concave channels to be fit to install light-collecting lens (20,22) and heat shield (21), and with screw (14,16) be fixed on a left side, optically focused chamber, eyeglass card (15) on the right hole wall lower surface blocks eyeglass (20,21,22), the left stepped hole of right hole wall is laid light-collecting lens (23) and the pressure eyeglass (37) that is fixed on the right hole wall with screw (38) compresses eyeglass (23), suitable being screwed with window (19) in hole wall outer face, a left side is connected, the evagination slide plate (2-2) of bottom surface, two side is slidingly connected with the parallel strip medial surface groove (3-1) of support (3) base plate, outdoor end face of optically focused and lateral wall have the radiating ribs of convex, vertical protrusion groove (2-1) on the two side of core box right part light source chamber, its upper end groove is fit to block the hangers (25-1) and the fixed cover frame of cover frame (25), and the protrusion cylinder (1-1) on lower recess and shell (1) two madial wall is slidingly connected, the band screw convex journal stirrup (2-3) of lower end, both sides, middle part is screwed with lamp socket (17) and is connected, and the fixing bulb (24) of the lamp jack (18) that utilizes lamp socket (17) upper end, the band screw convex journal stirrup of bottom surface, two side right-hand member is screwed with machine back seat (9) and is connected, the supply socket (8) that the bottom square opening of right-hand member wall is fit to power supply component by and be inserted on the lamp socket (17).And the cover frame (25) in the light source chamber is a square cover that is positioned at the right part light source chamber of core box (2) and covers on the outer under shed of bulb (24), the expansion of left end opening, right-hand member pore area card and upper end two outside band hangers (25-1), and reflector (26) is positioned in the right-hand member hole of cover frame (25) and also clamps with the card on limit, hole.

2, miniature slide projector as claimed in claim 1, power supply component is connected in series by attaching plug (4), power switch (5), electric wire (6), electronic transformer (7) and supply socket (8) and forms, and it is characterized in that electronic transformer is 12V, a 100W miniature electronic transformer with high magnetic flux magnetic core and semiconductor element and circuit composition.

3, miniature slide projector as claimed in claim 1, camera lens is made up of eyeglass (29,30,31), spacer ring (33,34), camera lens gliding mass (35), mirror body (36), camera lens shell (32) and screw pin (12), the fine tuning structure that constitutes camera lens in the spiral slotted eye (35-1) of camera lens gliding mass (35) right part is stretched in the outer end that it is characterized in that the screw pin (12) on mirror body (36) the right part periphery, and this fine tuning structure can promote mirror body drive lens wearer with camera lens shell (32) left-right rotation and move forward and backward.

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