CN211403097U - Film winding mechanism and projection lamp - Google Patents

Abstract

The utility model discloses a film winding mechanism and a projection lamp, belonging to the projection field, wherein the film winding mechanism comprises a frame, two parallel reels are rotatably connected on the frame, two driving motors are arranged on the frame, and the two driving motors are respectively and mechanically connected with the two reels; the film comprises a plurality of pictures, two ends of the film are respectively connected with two reels, and the film is wound on the two reels; a film picture framing detection device is also installed on the frame, and each picture on the film is provided with a framing detection mark; the film picture framing detection device is characterized by further comprising a controller, wherein the two driving motors and the film picture framing detection device are electrically connected with the controller. The projection lamp comprises a lamp holder, a light source and a lens, wherein the light source and the lens are arranged on the lamp holder, the film rolling mechanism is arranged on the lamp holder between the light source and the lens, and a frame of the film rolling mechanism is arranged on the lamp holder, and the film is perpendicular to the projection direction of the projection lamp. The utility model discloses simple structure, reasonable in design, and easy operation.

Description

Film winding mechanism and projection lamp

Technical Field

The utility model relates to a projection equipment field, in particular to film winding mechanism and projection lamp.

Background

The projection lamp, also known as a projector, is a device capable of projecting images or videos onto a curtain, and when the projection lamp is used for ordinary illumination, the projection lamp can be widely applied to outdoor lighting projects of lamps in families, offices, schools and entertainment places, and can also be used for creating effects of various lights and projecting required patterns.

The slide projector is one of the projectors, and is operated by irradiating light onto a film to project picture patterns on the film and continuously projecting the patterns on the film in the form of a slide; therefore, the prior art slide projectors have a mechanism for changing the film.

However, the current picture switching mechanism of the slide projector, i.e. the film changing mechanism, has a complex structure, and when a film is required to perform slide, the operation is complicated, the accuracy is poor, and the film is difficult to be switched to a correct position, so that the displayed picture has poor appearance.

SUMMERY OF THE UTILITY MODEL

The film that the slide projector lamp to prior art exists trades the problem that the film structure is complicated, complex operation, the utility model aims to provide a film winding mechanism.

In order to achieve the above purpose, the technical scheme of the utility model is that:

a film winding mechanism comprises a frame, wherein two parallel winding shafts are rotatably connected to the frame, two driving motors are mounted on the frame, and the two driving motors are respectively and mechanically connected with the two winding shafts; the film comprises a plurality of pictures, two ends of the film are respectively connected with the two reels, and the film is wound on the two reels; the frame is also provided with a film picture framing detection device, and each picture on the film is provided with a framing detection mark; the film picture framing detection device comprises two driving motors, and the film picture framing detection device is electrically connected with the controller.

Furthermore, a plurality of guide rotating shafts are rotatably connected to the machine frame, and the film is wound on the guide rotating shafts.

Preferably, the film picture framing detection device is an optical coupler, a continuous shading strip is arranged on the side edge of the film, and the framing detection mark is arranged in a light transmission area on the shading strip at intervals.

In another preferred mode, the film picture framing detection device is a magnetic coupler, and the framing detection marks are magnetic marks arranged on the film at intervals.

The utility model also discloses a projection lamp, include the lighting fixture and install light source and camera lens on the lighting fixture still include foretell film take-up mechanism simultaneously, the rack-mount of film take-up mechanism the light source with between the camera lens on the lighting fixture, the projection direction of film perpendicular to projection lamp.

Preferably, the rack is rotatably connected with the lamp holder, the rotation axis of the rack is parallel to the projection direction, and the rack is further provided with an angle fine adjustment mechanism.

Preferably, the lamp holder and the rack are respectively provided with an outer ring and an inner ring which are coaxial, and a guide ball is arranged between the outer ring and the inner ring.

In another preferred mode, the lamp holder is provided with an annular slide rail, and the rack is provided with a plurality of slide blocks matched with the annular slide rail.

Preferably, the annular slide rail includes a plurality of arc subsections, a plurality of arc subsections are evenly distributed at intervals, and each arc subsection is provided with one slide block.

Preferably, the angle fine adjustment mechanism is including fixing in the frame and the axis with annular ring gear or the arc ring gear of frame axis of rotation coincidence, the angle fine adjustment mechanism is still including fixing fine setting motor on the lighting fixture, fine setting motor last install with annular ring gear or the engaged with adjusting gear of arc ring gear.

By adopting the technical scheme, the two reels are arranged, so that the films on the reels can rotate randomly in two directions under the driving of the two driving motors, and the forward projection and the backward projection of the picture on the films can be ensured; and because of the arrangement of the film picture framing detection device and the framing detection marks arranged on the film, the position of the film can be reflected to the controller, and the film can be ensured to be always positioned on an accurate position for projection.

Drawings

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

Fig. 1 is a schematic structural view of the film winding mechanism of the present invention.

In the figure, 1-machine frame, 11-upper bottom plate, 12-lower bottom plate, 2-scroll, 3-driving motor, 4-film, 5-film picture framing detection device and 6-guiding rotating shaft.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship of the structure of the present invention based on the drawings, and are only for the convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.

In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in relation to the present scheme in specific terms according to the general idea of the present invention.

As shown in fig. 1, a film winding mechanism comprises a frame 1, wherein the frame 1 is a metal plate structure and comprises an upper base plate 11 and a lower base plate 12, and the upper base plate 11 and the lower base plate 12 are reinforced and fixed through a connecting member.

Two parallel winding shafts 2 are rotatably connected to the frame 1, and both ends of the winding shafts 2 are respectively connected to an upper base plate 11 and a lower base plate 12 through bearings. Meanwhile, two driving motors 3 are installed on the frame 1 (such as the lower bottom plate 12), and the two driving motors 3 are respectively and mechanically connected with the two reels 2; in this embodiment, the driving motor 3 is preferably a speed reducing motor, and the driving motor 3 is further connected to the reel 2 through a speed changing device, which may be a continuously variable transmission or a frequency converter for controlling the driving motor 3.

Still including the film 4 that contains a plurality of pictures, film 4 is the rectangle, and the both ends of film 4 are connected with two reels 2 respectively, for example through adhesive bonding or screwed connection all can, and the whole rolling of film 4 is on two reels 2, guarantees that the film 4 between two reels 2 does not appear relaxing and rocks the phenomenon.

The frame 1 is also provided with a film picture framing detection device 5, correspondingly, each picture on the film 4 is provided with a framing detection mark, and the framing detection mark is matched with the film picture framing detection device 5 for use to detect the picture position on the film 4. The film picture framing detection device further comprises a controller (not shown in the figure), the controller is fixedly installed on the machine frame 1 or is installed independently, and the two driving motors 3 and the film picture framing detection device 5 are electrically connected with the controller.

In this embodiment, the film picture framing detection device 5 is preferably an optical coupler, which includes a light emitter and a light receiver arranged opposite to each other, and meanwhile, as a support, a continuous shading strip is arranged on the side edge of the film 4, and the shading strip is located between the light emitter and the light receiver and is used for blocking light emitted by the light emitter; the framing detection marks are light-transmitting areas which are arranged on the shading strip at intervals. When a picture moves and passes, the light receiver receives an optical signal in a light-transmitting area, converts the optical signal into an electric signal and transmits the electric signal to the controller, and the controller can know the position of a certain picture on the film 4 according to the electric signal, so that the controller can conveniently control the driving motor 3 to carry out operations such as speed change or stop.

When in use, the rotating speed of the driving motor 3 is preset through a controller according to the requirement; when the slide film is projected, the two driving motors 3 rotate forwards and reversely one by one, and drive the film 4 to move together; meanwhile, the film picture framing detection device 5 feeds back the detected framing detection marks to the controller through electric signals, on one hand, the controller adjusts the rotating speed of the driving motor 3, and on the other hand, the real-time position of the picture on the film 4 can be determined, so that a light source can be conveniently polished to form a projection slide.

As an alternative to the above-described embodiment, the film picture framing detection means 5 may preferably be a magnetic coupling, and accordingly, the framing detection marks are magnetic marks provided at intervals on the film 4.

On the basis of the above embodiments, the frame 1 is rotatably connected with a plurality of guiding rotating shafts 6, two ends of the guiding rotating shafts 6 are also connected with the upper bottom plate 11 and the lower bottom plate 12 through bearings, and the film 4 is wound on the plurality of guiding rotating shafts 6. The guiding rotary shaft 6 is arranged to guide the film 4 on one hand and also play a role of loosening the film 4 on the other hand.

The utility model also discloses a projection lamp, include the lighting fixture and install light source and the camera lens on the lighting fixture, still include the film winding mechanism that any above-mentioned embodiment provided simultaneously, the frame 1 of film winding mechanism is installed on the lighting fixture between light source and camera lens, and the projection direction of 4 perpendicular to projection lamps of general film.

On the basis of the projection lamp, the rack 1 can be rotatably connected with the lamp holder, the rotation axis of the rack 1 is parallel to the projection direction, and the rack 1 is also provided with an angle fine adjustment mechanism. So set up for when the projection lamp place the back and take place the slope, only need through the angle fine-tuning adjust film take-up mechanism (film 4) the angle after, make the picture just can again.

As a scheme for realizing rotatable connection between the rack 1 and the lamp holder, the lamp holder and the rack 1 are respectively provided with an outer ring and an inner ring which are coaxial, and a guide ball is arranged between the outer ring and the inner ring. When the frame 1 rotates together with the inner ring fixed on the frame, only the ball rolls along with the inner ring, and the outer ring and the lamp holder bearing the outer ring are not moved.

As another scheme for realizing rotatable connection between the rack 1 and the lamp holder, an annular slide rail can be fixedly arranged on the lamp holder, a plurality of slide blocks matched with the annular slide rail are fixedly arranged on the rack 1, and the slide blocks are preferably arranged and uniformly arranged on the annular slide rail respectively. In this embodiment, the slider is preferably a T-shaped slider or a dovetail-shaped slider to prevent the rack 1 from falling off from the lamp holder.

Because the utility model discloses film 4 of projection lamp only needs the fine setting angle, consequently in another embodiment, can also set up foretell annular slide rail and be the sectional type slide rail, specifically include a plurality of arc segmentation, and the even interval distribution of a plurality of arc segmentation, all dispose one above-mentioned slider on every arc segmentation. With such an arrangement, the corresponding angle of each arc-shaped segment only needs to be larger than the fine adjustment angle (determined empirically) of the film 4, so that an integral annular slide rail does not need to be configured.

On the basis of the rotatable connection scheme, the angle fine adjustment mechanism is arranged to comprise an annular gear ring or an arc-shaped gear ring which is fixed on the rack 1 and the axis of which coincides with the rotation axis of the rack 1, and also comprises a fine adjustment motor fixed on the lamp holder, and an adjusting gear meshed with the annular gear ring or the arc-shaped gear ring is installed on the fine adjustment motor. The fine adjustment operation can be realized by changing the rotating direction and the number of the rotating circles of the fine adjustment motor, namely, the rack 1 can be driven to rotate by the annular gear ring or the arc-shaped gear ring.

Of course, under the non-electric condition, a locking screw can be directly arranged on the sliding block, and after the film winding mechanism is manually rotated, the sliding block can be fixed at a certain position of the annular sliding rail through the locking screw.

When the projection lamp is used, when the projection lamp is inclined due to uneven ground surface, the inclined direction of the projection lamp is determined only according to the picture of the film 4, and then the film winding mechanism is controlled by the angle fine adjustment mechanism to rotate in the opposite direction by a certain angle, so that the picture can be re-aligned. Compared with the projection lamp which is heavy and bulky to adjust, a great deal of time and labor input can be saved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims (10)

1. A film winding mechanism is characterized in that: the device comprises a rack, wherein two parallel reels are rotatably connected to the rack, two driving motors are mounted on the rack, and the two driving motors are respectively and mechanically connected with the two reels; the film comprises a plurality of pictures, two ends of the film are respectively connected with the two reels, and the film is wound on the two reels; the frame is also provided with a film picture framing detection device, and each picture on the film is provided with a framing detection mark; the film picture framing detection device comprises two driving motors, and the film picture framing detection device is electrically connected with the controller.

2. The film winding mechanism of claim 1, wherein: the frame is rotatably connected with a plurality of guide rotating shafts, and the film is wound on the guide rotating shafts.

3. The film winding mechanism of claim 1, wherein: film picture framing detection device is the opto-coupler, be provided with continuous light shading strip on the side of film, framing check mark sets up for the interval light transmission region on the light shading strip.

4. The film winding mechanism of claim 1, wherein: the film picture framing detection device is a magnetic coupler, and the framing detection marks are magnetic marks arranged on the film at intervals.

5. The utility model provides a projection lamp, includes the lighting fixture and installs light source and camera lens on the lighting fixture, its characterized in that: the film winding mechanism according to any one of claims 1 to 4, wherein the frame of the film winding mechanism is mounted on the lamp holder between the light source and the lens, and the film is perpendicular to the projection direction of the projection lamp.

6. The projection lamp of claim 5 wherein: the frame with lighting fixture rotatable coupling, the axis of rotation of frame is on a parallel with the projection direction, the frame still disposes angle fine-tuning.

7. The projection lamp of claim 6 wherein: the lamp holder and the rack are respectively provided with an outer ring and an inner ring which are coaxial, and a guide ball is arranged between the outer ring and the inner ring.

8. The projection lamp of claim 6 wherein: the lamp holder is provided with an annular slide rail, and the rack is provided with a plurality of slide blocks matched with the annular slide rail.

9. The projection lamp of claim 8 wherein: the annular slide rail includes a plurality of arc segmentation, a plurality of arc segmentation evenly spaced apart distribution, every all dispose one on the arc segmentation the slider.

10. A projection lamp as claimed in claim 7, 8 or 9, characterized in that: the angle fine-tuning is including fixing in the frame and the axis with annular ring gear or the arc ring gear of frame axis of rotation coincidence, angle fine-tuning is still including fixing fine setting motor on the lighting fixture, fine setting motor last install with annular ring gear or arc ring gear engaged with adjusting gear.

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