CN214795549U - Slide viewer - Google Patents
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- CN214795549U CN214795549U CN202121370415.XU CN202121370415U CN214795549U CN 214795549 U CN214795549 U CN 214795549U CN 202121370415 U CN202121370415 U CN 202121370415U CN 214795549 U CN214795549 U CN 214795549U
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- elastic sheet
- metal elastic
- slide
- battery
- light source
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Abstract
The utility model discloses a slide viewer, it mainly includes: the backlight diffusion plate is arranged at the opening at the front end of the lampshade, the convex lens is positioned in front of the backlight diffusion plate, and the shell is also provided with a slide insertion groove for inserting a slide; when the slide is inserted, the slide is spaced between the backlight diffusion plate and the convex lens, and light rays emitted by the light source are gathered by the lampshade, sequentially pass through the backlight diffusion plate, the slide and the convex lens and are projected out of the shell. By using the slide viewer, large-screen slide imaging can be obtained without a long-distance projection light path, so that the slide viewer is beneficial to volume miniaturization, convenient to carry, practical and convenient.
Description
Technical Field
The utility model relates to a slide show technique especially relates to a slide viewer.
Background
The slide show of prior art generally sees through the transmission of strong light or through the transmission of strong sunshine, and the inventor is carrying out the utility model discloses a research in-process discovers that the slide show ware of prior art exists bulky, the defect of not being convenient for carry to it still stimulates eyes easily to watch for a long time, leads to eyes discomfort, harms eyes.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a slide viewer. By using the slide viewer, large-screen slide imaging can be obtained without a long-distance projection light path, so that the slide viewer is beneficial to volume miniaturization, convenient to carry, practical and convenient.
The embodiment of the utility model provides a pair of slide viewer, include: a casing, a light source, a lampshade, a backlight diffusion plate and a convex lens are arranged in the casing,
the light source is fixed at the rear end of the shell, the lampshade covers the periphery of the light source, the backlight diffusion plate is arranged at the opening at the front end of the lampshade, the convex lens is positioned in front of the backlight diffusion plate,
the shell is also provided with a slide insertion groove for inserting a slide;
when the slide is inserted into the slide insertion groove, the slide is arranged between the backlight diffusion plate and the convex lens at intervals, and light rays emitted by the light source sequentially pass through the backlight diffusion plate, the slide and the convex lens under the gathering of the lampshade and are projected out of the shell.
Alternatively, the slide insertion groove is flush with a top surface of the backlight diffuser plate facing the convex lens side, and the slide is flatly placed on the top surface of the backlight diffuser plate when the slide is inserted into the slide insertion groove.
Optionally, the power supply circuit of the light source comprises a first metal dome,
the part of the first metal elastic sheet is over against the off position of the power supply circuit and has a preset gap with the off position,
one end of the first metal elastic sheet penetrates through a through hole on the backlight diffusion plate and extends out of the top surface of the through hole,
when the slide is inserted to a preset depth from the slide insertion groove, the slide abuts against the top of the through hole, the slide abuts against the tail end of the first metal elastic sheet, the first metal elastic sheet is deformed elastically and abuts against the off position of the power supply circuit, and the power supply circuit and the light source form a conductive loop through the first metal elastic sheet.
Optionally, the first metal dome includes: the tail end of the first arm extends out of the through hole, the second arm is fixedly connected with the anode of the light source, the cathode of the light source is fixedly connected with the cathode of the power supply,
the power supply circuit also comprises a second metal elastic sheet connected with the anode of the power supply, part of the second metal elastic sheet is over against the first arm of the first metal elastic sheet, and a preset gap is formed between the second metal elastic sheet and the first arm of the first metal elastic sheet,
when the first metal elastic sheet is elastically deformed, the first arm of the first metal elastic sheet is in contact with the second metal elastic sheet which is just opposite to the first arm, and the power supply circuit and the light source form a switched-on loop through the first metal elastic sheet and the second metal elastic sheet which are in contact.
Optionally, a first arm of the second metal dome, which faces the first metal dome, is a segment and is bent toward the first arm.
Optionally, the power supply comprises: a first battery, a second battery,
the power supply circuit also comprises a third metal elastic sheet and a fourth metal elastic sheet,
when the first battery and the second battery are arranged, the negative electrode of the first battery is abutted against the third metal elastic sheet which is used as the negative electrode of the power supply and is fixedly connected with the negative electrode of the light source,
the positive pole of the first battery and the negative pole of the second battery are respectively propped against the fourth metal elastic sheet,
the positive pole of the second battery is tightly propped against the second metal elastic sheet, and the second metal elastic sheet is used as the positive pole of the power supply.
Optionally, the first battery and the second battery are cylindrical batteries, and a positive electrode and a negative electrode of each cylindrical battery are disposed at two opposite end portions.
Optionally, a battery compartment is provided on the housing,
the third metal elastic sheet and the second metal elastic sheet are respectively positioned at the same side of the battery compartment, the fourth metal elastic sheet is positioned at the other side of the battery compartment,
the first battery is abutted between the third metal elastic sheet and the fourth metal elastic sheet;
the second battery is abutted between the second metal elastic sheet and the fourth metal elastic sheet.
Optionally, the light source is an LED lamp.
Optionally, the through hole is located outside an orthographic projection of the lamp shade, and the first metal elastic piece penetrates through the through hole in the backlight diffusion plate from outside the lamp shade.
Optionally, the shell comprises a rear shell, a middle shell and a front shell which are connected in sequence from back to front,
the light source, the power supply circuit of the light source and the light source are fixed in the rear shell,
the lampshade and the backlight diffusion plate are arranged in the middle shell,
the convex lens is fixed in the front shell.
From top to bottom, because the light that the slide viewer of this embodiment shines to the slide is even light that is parallel to each other, the slide formation of image luminance is even, is favorable to protecting user's eyesight. The front end of the slide is further provided with the convex lens, so that large-area slide imaging can be obtained without a long-distance projection light path, the slide is more applicable, and the slide is more flexible and convenient to apply. In addition, because the light path that this embodiment technical scheme must is short, this scheme is favorable to the miniaturized design of slide viewer, and its is small, and is simple to use, conveniently carries, is applicable to and uses at any time.
Drawings
Fig. 1 is a schematic view of an assembly structure of a slide viewer provided in embodiment 1 of the present invention;
fig. 2 is a schematic cross-sectional structural diagram of a slide viewer provided in embodiment 1 of the present invention;
fig. 3 is a schematic perspective view of a slide viewer provided in embodiment 1 of the present invention;
fig. 4 is a schematic perspective view of another slide viewer provided in embodiment 1 of the present invention;
reference numerals:
1: a light source; 2: a lamp shade; 3: a backlight diffusion plate; 31: a through hole;
4: a convex lens; 5: inserting the slide into the slot;
61: a first metal spring sheet; 611: a first arm; 612: a second arm;
62: a second metal dome; 63: a third metal dome; 64: a fourth metal dome;
81: a rear housing; 82: a middle shell; 83: a front shell.
Detailed Description
The invention will be described in detail with reference to the specific drawings and examples, which are illustrative of the invention and are not intended to limit the invention.
See fig. 1-4.
The present embodiment provides a slide viewer, the main body of which is a housing, and a light source 1, a lamp housing 2, a backlight diffusion plate 3 and a convex lens 4 are mainly disposed in the housing. The light source 1 is located at the rear end of the housing, the lampshade 2 covers the periphery of the light source 1, the backlight diffusion plate 3 is installed at an opening at the front end of the lampshade 2, the convex lens 4 is installed in front of the backlight diffusion plate 3, a predetermined distance is formed between the convex lens 4 and the backlight diffusion plate 3, and the backlight diffusion plate 3 is located between the light source 1 and the convex lens 4.
A slide insertion slot 5 is also provided in the housing for inserting a slide (typically, but not limited to, the slide is pre-loaded in a sheet-like slide holder to avoid scratching of the slide), and when the slide is inserted, the inserted slide is positioned at the front end of the backlight diffusion plate 3 with the slide being spaced between the backlight diffusion plate 3 and the convex lenses 4.
The application principle of this slide viewer is, the light that light source 1 sent is gathered together to lamp shade 2, avoid light to leak, make whole or almost all light that light source 1 sent shine to diffuser plate 3 in a poor light, diffuser plate 3 in a poor light carries out even scattering to light, make the light that comes out from the another side of whole diffuser plate 3 in a poor light be even parallel light, even parallel light that comes out from diffuser plate 3 in a poor light passes through the slide, obtain even slide formation of image, the light of slide formation of image passes through convex lens 4, convex lens 4 enlargies the slide formation of image, outwards send the slide formation of image after enlargeing, get into people's eyes, make the people can see enlarged slide through convex lens 4 outside the casing.
From top to bottom, because the light that the slide viewer of this embodiment shines to the slide is even parallel light, the slide formation of image luminance is even, is favorable to protecting user's eyesight. The front end of the slide is further provided with the convex lens 4, a long-distance projection light path is not needed, a user can see the slide image of the large screen through the convex lens 4 at the viewing window at the top of the shell, the application is more applicable, and the application is more flexible and convenient.
In addition, because the light path that this embodiment technical scheme must is short, this scheme is favorable to the miniaturized design of slide viewer, and its is small, and is simple to use, conveniently carries, is applicable to and uses at any time.
As an illustration of the present embodiment, the slide insertion groove 5 of the present embodiment is flush with the top surface of the backlight diffusion plate 3, and when a slide is inserted in the slide insertion groove 5, the inserted slide is placed flat on the top surface of the backlight diffusion plate 3.
As an illustration of the present embodiment, a metal elastic sheet (denoted as a first metal elastic sheet 61) is further disposed in the casing, a portion of the first metal elastic sheet 61 is suspended at an off position of the power supply circuit of the light source 1, one end of the first metal elastic sheet 61 extends toward the backlight diffusion plate 3, and a tail end of the end extends out of a through hole 31 disposed on the backlight diffusion plate 3. Thus, when the slide is inserted to a predetermined insertion depth from the slide insertion slot 5, the slide is pressed against the through hole 31 of the backlight heat dissipation plate, the slide presses the end of the first metal elastic sheet 61 in the through hole 31, the first metal elastic sheet 61 in the through hole 31 is pressed down toward the through hole, the first metal elastic sheet 61 is elastically deformed under the pressure of the slide, so that the portion of the first metal elastic sheet 61 located on the side of the power supply circuit is further bent toward the direction of the power supply circuit of the light source 1, and is attached to the off position of the power supply circuit, the off position is turned on, the power supply circuit and the light source form a conductive current loop through the second metal elastic sheet 62, and the power supply circuit lights the light source 1. By adopting the design, the light source 1 is automatically lightened when a slide is put in, automatic slide projection is realized without user operation, user application is further facilitated, and application convenience is improved.
As an illustration of the present embodiment, it is preferable, but not limited to, to design the through hole 31 outside the orthographic projection of the lamp housing 2, so that the first metal elastic piece 61 does not need to extend into the lamp housing 2 to avoid light leakage, and the first metal elastic piece 61 extends into the through hole 31 of the backlight diffusion plate 3 from the outside of the lamp housing 2.
As an illustration of the present embodiment, the present embodiment further provides a power supply circuit structure with a simple structure, a small volume, and an easy implementation, in which the first metal elastic sheet 61 of the present embodiment includes a first arm 611 and a second arm 612 that are bent, the end of the first arm 611 of the first metal elastic sheet 61 extends out of the through hole 31, and the second arm 612 of the first metal elastic sheet 61 is fixedly connected to the anode of the light source 1.
The power supply circuit further includes a second metal elastic sheet 62, one end of the second metal elastic sheet 62 is fixedly connected to the positive electrode of the power supply, and the other end of the second metal elastic sheet 62 is bent outside the first arm 611 of the first metal elastic sheet 61 and opposite to the first arm 611 of the first metal elastic sheet 61, in this embodiment, the position of the first arm 611 of the first metal elastic sheet 61 is preferably designed to be bent toward the direction of the second metal elastic sheet 62 opposite to the position. In a natural state, a gap between the first arm 611 of the first metal dome 61 and the second metal dome 62 opposite thereto is the narrowest at the bend. The negative pole of the light source 1 is fixedly connected with the negative pole of the power supply. When the slide is inserted to deform the first metal elastic sheet 61, the first arm 611 of the first metal elastic sheet 61 bends toward the second metal elastic sheet 62 on the side, the first arm 611 of the first metal elastic sheet 61 contacts with the second metal elastic sheet 62, at this time, the power supply and the light source form a loop, and the current comes out from the positive electrode of the power supply, sequentially passes through the second arm 612 of the first metal elastic sheet 61, the first arm 611 of the first metal elastic sheet 61, the second metal elastic sheet 62, passes through the positive electrode of the light source 1, the negative electrode of the light source, and returns to the negative electrode of the power supply. The power supply circuit is low in design material cost and high in circuit reliability, and can automatically start the light source 1 by taking slide insertion as trigger without a circuit board, a single chip microcomputer and the like, so that automatic projection of slides is realized.
As an illustration of the present embodiment, the power supply of the present embodiment may be implemented by, but is not limited to, an external input current, and may also be implemented by, but is not limited to, a battery, which may be, but is not limited to, a rechargeable battery or a primary battery.
As an illustration of the present embodiment, the power supply of the present embodiment may be formed by connecting two batteries (referred to as a first battery and a second battery) in series. Correspondingly, the power supply circuit also comprises a third metal elastic sheet 63 and a fourth metal elastic sheet 64, so that after the first battery and the second battery are installed, the anode of the first battery and the cathode of the second battery are respectively and tightly abutted against the fourth metal elastic sheet 64, and the two batteries are connected in series through the fourth metal elastic sheet 64 to form an integral power supply for outputting current outwards; the negative electrode of the first battery is tightly propped against the third metal elastic sheet 63, the third metal elastic sheet 63 is used as the negative electrode of a power supply formed by connecting the two batteries in series, and the third metal elastic sheet 63 is also fixedly connected with the negative electrode of the light source 1; the positive pole of the second battery is tightly pressed against the second metal elastic sheet 62, and the second metal elastic sheet 62 is used as the positive pole of the power supply formed by connecting the two batteries in series.
When the slide is inserted until the first metal elastic sheet 61 deforms, the first metal elastic sheet 61 contacts the second metal elastic sheet 62, the two batteries are connected in series, the current of the power supply flows out from the positive pole of the second battery, passes through the second metal elastic sheet 62, the second arm 612 of the first metal elastic sheet 61, the first arm 611 of the first metal elastic sheet 61 and the light source 1, flows into the negative pole of the second battery, and flows into the negative pole of the first battery from the positive pole of the second battery, so that a current loop is formed. The power supply circuit only needs a plurality of metal elastic sheets to complete the design of the power supply circuit of the light source 1, a circuit board is not needed, and the slide insertion is triggered without a switch or a control chip, so that the light source 1 is automatically started to automatically project the slide.
As an illustration of the present embodiment, the present embodiment may adopt cylindrical batteries as the first battery and the second battery, and the positive electrode and the negative electrode of the batteries are respectively disposed on two opposite end surfaces of the cylindrical battery.
This embodiment can set up the battery compartment of being convenient for to open and shut on the casing, in the battery compartment, makes third metal shrapnel 63, second metal shrapnel 62 lie in the same side of battery compartment respectively, and fourth metal shrapnel 64 lies in the opposite side of battery compartment. When the batteries are assembled, the first battery and the second battery are respectively assembled in parallel, and the first battery is tightly propped between the third metal elastic sheet 63 and the fourth metal elastic sheet 64; the second battery is tightly pressed between the second metal elastic sheet 62 and the fourth metal elastic sheet 64. The design of the battery bin is beneficial to facilitating the replacement of the battery by a user at any time and is convenient to carry.
As an illustration of this embodiment, the light source 1 of this embodiment can be implemented by, but not limited to, an LED lamp bead.
As an illustration of the present embodiment, the housing of the present embodiment includes a rear housing 81, a middle housing 82, and a front housing 83, which are sequentially connected from back to front in the optical path direction, such that the light source 1, its power supply circuit, and a power supply (or a power interface) are disposed on the rear housing 81, the backlight diffusion plate 3 is fixed at the front opening of the lamp shade 2 to completely cover or cover the opening in an interference manner, the backlight diffusion plate 3 and the lamp shade 2 are disposed on the middle housing 82, and the convex lens 4 is fixed on the front housing 83, when assembling, after assembling the housings of the respective portions is respectively completed, the rear housing 81, the middle housing 82, and the front housing 83 are sequentially connected, so as to obtain the slide viewer of the present embodiment. The structure is favorable for realizing the modular design of products, and is convenient for replacing and maintaining parts of the products.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (11)
1. A slide viewer, comprising: a casing, a light source, a lampshade, a backlight diffusion plate and a convex lens are arranged in the casing,
the light source is fixed at the rear end of the shell, the lampshade covers the periphery of the light source, the backlight diffusion plate is arranged at the opening at the front end of the lampshade, the convex lens is positioned in front of the backlight diffusion plate,
the shell is also provided with a slide insertion groove for inserting a slide;
when the slide is inserted into the slide insertion groove, the slide is arranged between the backlight diffusion plate and the convex lens at intervals, and light rays emitted by the light source sequentially pass through the backlight diffusion plate, the slide and the convex lens under the gathering of the lampshade and are projected out of the shell.
2. The slide viewer of claim 1,
the slide insertion groove is flush with a top surface of the backlight diffuser plate facing the convex lens side, and the slide is flatly placed on the top surface of the backlight diffuser plate when the slide is inserted into the slide insertion groove.
3. The slide viewer of claim 1,
the power supply circuit of the light source comprises a first metal elastic sheet,
the part of the first metal elastic sheet is over against the off position of the power supply circuit and has a preset gap with the off position,
one end of the first metal elastic sheet penetrates through a through hole on the backlight diffusion plate and extends out of the top surface of the through hole,
when the slide is inserted to a preset depth from the slide insertion groove, the slide abuts against the top of the through hole, the slide abuts against the tail end of the first metal elastic sheet, the first metal elastic sheet is deformed elastically and abuts against the off position of the power supply circuit, and the power supply circuit and the light source form a conductive loop through the first metal elastic sheet.
4. The slide viewer of claim 3,
the first metal dome includes: the tail end of the first arm extends out of the through hole, the second arm is fixedly connected with the anode of the light source, the cathode of the light source is fixedly connected with the cathode of the power supply,
the power supply circuit also comprises a second metal elastic sheet connected with the anode of the power supply, part of the second metal elastic sheet is over against the first arm of the first metal elastic sheet, and a preset gap is formed between the second metal elastic sheet and the first arm of the first metal elastic sheet,
when the first metal elastic sheet is elastically deformed, the first arm of the first metal elastic sheet is in contact with the second metal elastic sheet which is just opposite to the first arm, and the power supply circuit and the light source form a switched-on loop through the first metal elastic sheet and the second metal elastic sheet which are in contact.
5. The slide viewer of claim 4,
the first arm of the second metal elastic sheet, which is opposite to the first metal elastic sheet, is a segment and is bent towards the direction of the first arm.
6. The slide viewer of claim 4,
the power supply includes: a first battery, a second battery,
the power supply circuit also comprises a third metal elastic sheet and a fourth metal elastic sheet,
when the first battery and the second battery are arranged, the negative electrode of the first battery is abutted against the third metal elastic sheet which is used as the negative electrode of the power supply and is fixedly connected with the negative electrode of the light source,
the positive pole of the first battery and the negative pole of the second battery are respectively propped against the fourth metal elastic sheet,
the positive pole of the second battery is tightly propped against the second metal elastic sheet, and the second metal elastic sheet is used as the positive pole of the power supply.
7. The slide viewer of claim 6,
the first battery and the second battery are cylindrical batteries respectively, and the anode and the cathode of each cylindrical battery are arranged at two opposite end parts respectively.
8. The slide viewer of claim 7,
a battery compartment is arranged on the shell body,
the third metal elastic sheet and the second metal elastic sheet are respectively positioned at the same side of the battery compartment, the fourth metal elastic sheet is positioned at the other side of the battery compartment,
the first battery is abutted between the third metal elastic sheet and the fourth metal elastic sheet;
the second battery is abutted between the second metal elastic sheet and the fourth metal elastic sheet.
9. The slide viewer of claim 1,
the light source is an LED lamp.
10. The slide viewer of claim 3,
the through hole is positioned outside the orthographic projection of the lampshade, and the first metal elastic sheet penetrates through the through hole in the backlight diffusion plate from the outside of the lampshade.
11. The slide viewer of claim 1,
the shell comprises a rear shell, a middle shell and a front shell which are sequentially connected from back to front,
the light source, the power supply circuit of the light source and the light source are fixed in the rear shell,
the lampshade and the backlight diffusion plate are arranged in the middle shell,
the convex lens is fixed in the front shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121370415.XU CN214795549U (en) | 2021-06-18 | 2021-06-18 | Slide viewer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121370415.XU CN214795549U (en) | 2021-06-18 | 2021-06-18 | Slide viewer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214795549U true CN214795549U (en) | 2021-11-19 |
Family
ID=78713804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121370415.XU Active CN214795549U (en) | 2021-06-18 | 2021-06-18 | Slide viewer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214795549U (en) |
-
2021
- 2021-06-18 CN CN202121370415.XU patent/CN214795549U/en active Active
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