Film flushing box

Abstract

The film flushing box comprises a box body and a cover body, the box body is hollow to form a containing cavity, an opening communicated with the containing cavity is formed in the top of the box body, the containing cavity is used for containing a film to be flushed, at least part of the top end face of the box body forms a flow guide face, and a first guide groove is formed in the flow guide face; the bottom wall of the first guide groove is connected with the inner side wall of the containing cavity, the bottom wall of the first guide groove is obliquely arranged towards the bottom end of the box body, the cover body detachably covers the top end of the containing cavity, and a gap is formed between the cover body and the flow guide face so that a channel communicating the first guide groove with the external environment can be formed. According to the application, the first guide groove is formed in the flow guide surface, and the liquid medicine on the flow guide surface can be continuously introduced into the first guide groove by utilizing the height difference, so that the liquid medicine overcomes the surface tension on the flow guide surface and can continuously flow into the accommodating cavity through the first guide groove, and the liquid medicine is prevented from being accumulated on the flow guide surface; and the potential safety hazard of the product is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of photography and videography, and in particular to a film developing box. Background Art

[0002] After taking a photo, some cameras need to develop the film to make the image appear. Traditional film developing needs to be done in a special darkroom, which is very inconvenient.

[0003] With the advancement of technology, small manual film developing boxes that can be used at home have appeared. By placing a film core assembly and adding liquid medicine inside a light-proof box, where the liquid medicine may include a developer or a fixer, etc., the film wrapped around the film core assembly can fully come into contact with the liquid medicine to complete operations such as developing or fixing, greatly improving the convenience of film developing.

[0004] The film developing box includes a box body and a cover body. A cavity with an open end is formed inside the box body. The cover body is used to cover the open end of the cavity, so that the cavity is sealed and light-proof. The cover body is connected to a platform extending from the inner wall of the box body. When adding liquid medicine, the film is first placed in the cavity. After the cover body is closed, the liquid medicine is added to the surface of the platform, so that the liquid medicine flows from the surface of the platform into the cavity. However, due to the tension of the surface of the platform, a part of the liquid medicine will accumulate on the surface. Since the liquid medicine has certain corrosiveness and toxicity, the developer exposed on the surface is likely to bring safety hazards to users and reduce the reliability of the product. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that when adding liquid medicine, the liquid medicine accumulates on the table surface of the platform instead of flowing into the cavity, causing the liquid medicine to be exposed on the table surface and posing a safety hazard to the user.

[0006] In order to solve the above technical problems, the present invention provides a film developing box, comprising:

[0007] A box body, wherein the interior of the box body is hollow to form a cavity, the top of the box body is provided with an opening connected to the cavity, the cavity is used to accommodate the film to be developed, at least a part of the top end surface of the box body forms a guide surface, the guide surface is provided with a first guide groove, the bottom wall of the first guide groove is connected to the inner side wall of the cavity, and the bottom wall of the first guide groove is inclined toward the bottom end of the box body;

[0008] A cover body is detachably covered on the top of the cavity, the cover body covers a portion of the guide surface, and there is a gap between the cover body and the guide surface to form a channel connecting the first guide groove and the outside, and the channel is used for liquid medicine to enter the cavity to wash the film.

[0009] In an exemplary embodiment of the present application, the inner wall portion of the cavity connected to the guide surface is recessed to form a second guide groove, and the recessed depth of the second guide groove gradually decreases in the direction from the top end of the box body to its bottom end, and the top end of the second guide groove is connected to the first guide groove, and the medicine flows into the cavity through the first guide groove and the second guide groove in sequence.

[0010] In an exemplary embodiment of the present application, the width of the second guide groove gradually decreases in the direction from the top end to the bottom end of the box body.

[0011] In an exemplary embodiment of the present application, a side enclosure is provided on the outer edge of the top end of the box body, the side enclosure protrudes from the top end of the box body, the cavity is located in the side enclosure, and the cover body is detachably disposed in the side enclosure.

[0012] In an exemplary embodiment of the present application, the cover body abuts against the top end surface of the box body, and a gap is provided between the portion of the side enclosure connected to the guide surface and the cover body, the gap is connected to the external environment and the channel, and the medicinal liquid flows into the channel through the guide surface via the gap.

[0013] In an exemplary embodiment of the present application, the film developing box also includes a connecting portion, which is connected to one end of the guide surface close to the cavity and is arranged opposite to a portion of the side enclosure connected to the guide surface, and a notch is arranged on the connecting portion, and the first guide groove extends into the notch.

[0014] In an exemplary embodiment of the present application, the film developing box also includes a light blocking portion, which is disposed on a portion of the guide surface covered by the cover body, the light blocking portion and the notch are arranged relatively spaced apart, and the area between the light blocking portion and the connecting portion forms the channel.

[0015] In an exemplary embodiment of the present application, two ends of the light blocking portion in the length direction respectively exceed the opposite ends of the notch, and the top end of the light blocking portion is not lower than the top end of the connecting portion.

[0016] In an exemplary embodiment of the present application, a protrusion is provided at the bottom of the cover body, the protrusion abuts against the inner side wall in the cavity connected to the guide surface, the protrusion is arranged opposite to the notch, and a groove is provided on the side of the protrusion facing the notch, the groove extends from the top end of the box body to the bottom end thereof, and the groove connects the notch and the inside of the cavity.

[0017] In an exemplary embodiment of the present application, the top end surface of the box body is recessed toward the bottom end of the box body away from the accommodating cavity to form a slot with the side enclosure, and the bottom edge of the cover body is snapped into the slot.

[0018] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0019] In the present application, a guide surface is provided so that the medicine liquid added to the guide surface can flow into the cavity along the guide surface, and by forming a first guide groove on the guide surface, the medicine liquid on the guide surface can be continuously introduced into the first guide groove by utilizing the height difference, so that the medicine liquid overcomes the surface tension on the guide surface and can continuously flow into the cavity through the first guide groove, thereby avoiding the accumulation of medicine liquid on the guide surface and reducing the safety hazard of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of the film developing box in the embodiment of the present application is shown in FIG. Figure 1 .

[0021] Figure 2 The structure of the film developing box in the embodiment of the present application is shown in FIG. Figure 2 .

[0022] Figure 3 The structure of the film developing box after the cover is hidden in the embodiment of the present application is shown in FIG. Figure 1 .

[0023] Figure 4 The structure of the film developing box after the cover is hidden in the embodiment of the present application is shown in FIG. Figure 2 .

[0024] Figure 5 The structure of the film developing box after the cover is hidden in the embodiment of the present application is shown in FIG. Figure 3 .

[0025] Figure 6 It is an exploded view of the cover and the box body in the film developing box in the embodiment of the present application.

[0026] Figure 7 is a cross-sectional view of a film developing box in an embodiment of the present application Figure 1 .

[0027] Figure 8 is a cross-sectional view of a film developing box in an embodiment of the present application Figure 2 .

[0028] The following are the descriptions of the reference numerals:

[0029] Box body 1, cavity 10, guide surface 11, channel 12, side enclosure 13, card slot 14, first guide slot 15, second guide slot 16, liquid pouring port 17, cover body 2, liquid filling port 20, cover body 21, card connection portion 22, protrusion 23, groove 24, connecting portion 3, notch 30, light shielding portion 4, film rotary cutting module 5, rotating handle 6. DETAILED DESCRIPTION

[0030] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0031] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indications of directions or positional relationships (such as up, down, left, right, front and back, etc.) are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, the indications of these directions also change accordingly.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] See also Figures 1 to 3 The present embodiment provides a film developing box, which includes a box body 1 and a cover body 2. The box body 1 is the main structure of the film developing box, and the box body 1 is hollow inside to form a cavity 10, which is used to accommodate the film to be developed and related functional components.

[0034] In some embodiments, the top of the box body 1 is provided with an opening connected to the cavity 10. When placing a film, the film can be placed into the cavity 10 through the opening at the top of the box body 1. The box body 1 as a whole can be in the shape of a rectangular column or a cylinder, and the cross-section of the cavity 10 can be in the shape of a rectangle or a circle.

[0035] It is understandable that, due to the formation of the containing cavity 10, the box body 1 has a certain thickness, and the top end surface of the box body 1 also has a certain area. Among them, at least a part of the top end surface of the box body 1 forms a guide surface 11, which can be formed on one side of the end surface of the top of the box body 1, or can be formed on each end surface of the top of the box body 1. When adding liquid medicine, the liquid medicine can be added to the guide surface 11, and the liquid medicine flows into the containing cavity 10 along the guide surface 11.

[0036] In some embodiments, the cover body 2 is detachably covered on the top of the cavity 10, so that the top opening of the box body 1 can be opened or closed to make the cavity 10 open or closed.

[0037] In some embodiments, the cover 2 may be in the shape of a flat plate so as to cover the opening at the top of the box body 1. When the cover 2 is connected to the box body 1, there is a gap between the cover 2 and the guide surface 11 to form a channel 12 connecting the cavity 10 and the external environment, and the channel 12 allows the liquid medicine to enter the cavity 10 to develop the film. In order to keep the cavity 10 dark after the cover 2 is closed, the box body 1 and the cover 2 are made of opaque materials.

[0038] It should be noted that the chemical liquid can be a developer or a fixer. By pouring the chemical liquid into the cavity 10, it can come into contact with the film placed in the cavity 10 to react and complete operations such as developing or fixing. Compared with the traditional method of doing it in a special darkroom, the convenience of film washing is greatly improved.

[0039] In some embodiments, the film developing box further includes a film peeling module 5. A mounting seat is provided on one side of the box body 1, and the film peeling module 5 is provided on the mounting seat. The film is wound on the film peeling module 5 in a roll shape, and one end of the film is connected to a core assembly provided in the cavity 10. The core assembly can rotate in the cavity 10 through a rotating shaft. During the washing process, the core assembly rotates under the drive of the rotating shaft, thereby driving the film to gradually wind around the core assembly. With the continuous rotation, the film fully contacts and reacts with the liquid medicine in the cavity 10. A rotating handle 6 can also be provided on the outer wall of the box body 1, and the rotating handle 6 extends into the box body 1 and is connected to the rotating shaft, so that the film can be manually washed by controlling the rotating handle 6. The cover body 2 can cover the film peeling module 5 to protect it.

[0040] In some embodiments, the top outer edge of the box body 1 is provided with a side enclosure 13. The side enclosure 13 is arranged along the outer edge contour of the box body 1, and the side enclosure 13 protrudes from the top of the box body 1, so that the top end surface of the box body 1 is enclosed in the side enclosure 13, and the cavity 10 is located in the side enclosure 13, so that when adding liquid medicine, there is no need to worry about the liquid medicine flowing from the guide surface 11 to the outside of the box body 1, making the addition of liquid medicine more worry-free. Among them, the side enclosure 13 can be integrally formed with the top of the box body 1, which can simplify the manufacturing process, improve the airtightness, and prevent the liquid medicine from leaking from the gap between the side enclosure 13 and the top outer edge of the box body 1.

[0041] In some embodiments, by providing the side enclosure 13, the cover body 2 can be detachably provided in the side enclosure 13, so that the side enclosure 13 can be used to provide a certain degree of protection for the cover body 2, and the size relationship between the cover body 2 and the side enclosure 13 can also be reasonably provided so that the cover body 2 can be snapped into the side enclosure 13, so as to facilitate the installation and removal of the cover body 2. At the same time, since the cover body 2 is located in the side enclosure 13, the area between the cover body 2 and the top of the box body 1 is blocked by the side enclosure 13, and the external light cannot directly penetrate between the cover body 2 and the top of the box body 1, thereby preventing the light from entering the cavity 10 as much as possible, so that the cavity 10 can be kept in a dark state, and the film washing effect is improved.

[0042] In some embodiments, the cover body 2 is in contact with the top end surface of the box body 1, and the top end of the box body 1 supports the cover body 2. The top end surface of the box body 1 is recessed toward the bottom end of the box body 1 at one end away from the cavity 10, so as to be enclosed with the side enclosure 13 to form a slot 14, and the inner side wall of the side enclosure 13 forms the groove side wall of the slot 14, and the bottom edge of the cover body 2 is engaged with the slot 14, so that the cover body 2 and the box body 1 are engaged, so as to facilitate the installation and removal of the cover body 2.

[0043] See also Figure 6 In some embodiments, the cover body 2 may include a cover body 21 and a snap-on portion 22 disposed at the edge of the cover body 21. The cover body 21 is in a flat plate shape, and the snap-on portion 22 protrudes from the bottom edge of the cover body 21, so that when the cover body 2 and the box body 1 are snap-fitted, the snap-on portion 22 is just snapped into the snap-on groove 14. A handle groove may also be disposed on the top of the cover body 21, so that the cover body 2 can be lifted through the handle groove to facilitate removal from the box body 1.

[0044] In some embodiments, the card slot 14 can also be opened on the bottom edge of the cover body 2, and a protruding card portion 22 is set on the top end face of the box body 1, and the card portion 22 is carded in the card slot 14 set on the bottom edge of the cover body 2 to achieve a card connection between the cover body 2 and the box body 1.

[0045] In some other embodiments, the cover body 2 and the top end surface of the box body 1 may be detachably connected by bonding or screwing.

[0046] Continue to see Figures 4 to 5 In some embodiments, the cover body 2 covers part of the flow guide surface 11, so that there is a gap between the part of the side 13 connected to the flow guide surface 11 and the cover body 2, and the gap is connected to the external environment and the channel 12. The liquid medicine flows through the gap through the flow guide surface 11 into the channel 12 and finally into the cavity 10. By reasonably setting the width of the gap, a larger liquid filling port 20 can be formed in the gap area, so that when adding liquid medicine, there is a larger area to receive the liquid medicine, making the process of adding liquid medicine more worry-free. At the same time, because the cover body 2 covers the flow guide surface 11, external light cannot directly enter the cavity 10 from above the cover body 2.

[0047] In some embodiments, a pouring port 17 may be provided at the corner of the side enclosure 13, so that when the film is developed and the liquid needs to be poured out from the chamber 10, the film developing box may be tilted so that the liquid flows out along the pouring port 17. The pouring port 17 may be formed by two side walls of the side enclosure 13, and the two side walls are respectively connected to the two side edges of the guide surface 11, and the two side walls are inclined outward, so that the pouring port 17 expanding outward is formed at the connection of the two side walls.

[0048] In some embodiments, the film developing box further includes a connecting portion 3. The connecting portion 3 is connected to one end of the guide surface 11 close to the cavity 10, and the connecting portion 3 and the portion of the side enclosure 13 connected to the guide surface 11 are arranged relative to each other, so that the connecting portion 3, the side enclosure 13 and the guide surface 11 can enclose a slot structure with a slot opening upward. At the same time, a notch 30 is provided on the connecting portion 3, and the channel 12 is connected to the cavity 10 through the notch 30, and the drug liquid can flow from the notch 30 into the cavity 10. The notch 30 forms a liquid outlet of the slot structure, which can make the drug liquid flow from the notch 30 to the cavity 10. The connection portion 3 can make the flow of the drug liquid on the guide surface 11 more controllable. Among them, the notch 30 can be set at any position of the connecting portion 3. In this embodiment, the notch 30 is set at the center of the connecting portion 3, and the drug liquid can be collected from both sides to the notch 30.

[0049] It should be noted that the notch 30 extends to connect with the guide surface 11 , so that the connecting portion 3 does not block the flow of the drug solution at the notch 30 , and the drug solution can flow more smoothly from the notch 30 to the cavity 10 .

[0050] In some embodiments, the connecting portion 3 may be plate-shaped and may be integrally formed with the inner wall of the cavity 10 and formed by extending the inner wall of the cavity 10 toward the protruding flow guide surface 11. The connecting portion 3 may also be a separate component and sealedly connected to one end of the flow guide surface 11.

[0051] In some embodiments, the film developing box further includes a light shielding portion 4. The light shielding portion 4 is disposed on the portion of the guide surface 11 covered by the cover body 2, and the light shielding plate is disposed relatively spaced apart from the notch 30, so that the light entering from the front of the notch 30 is blocked by the light shielding portion 4, so as to prevent light from entering the cavity 10 as much as possible, so that the cavity 10 is kept in an absolutely dark state.

[0052] It can be understood that by spacing the light shielding portion 4 from the notch 30, there is a spacing between the light shielding portion 4 and the connecting portion 3, and the area between the light shielding portion 4 and the connecting portion 3 forms the above-mentioned channel 12. When adding liquid medicine, the liquid medicine is first added to the liquid adding port 20. Due to the blocking of the light shielding portion 4, the liquid medicine flows from both sides of the light shielding plate into the channel 12, and finally flows into the cavity 10 from the notch 30.

[0053] At the same time, in order to prevent the accumulation of liquid medicine on the side of the light shielding portion 4 away from the connecting portion 3, the length of the light shielding portion 4 can be reasonably set to prevent it from being too long. In this embodiment, the two ends of the light shielding portion 4 in the length direction respectively exceed the opposite ends of the notch 30, and the top of the light shielding portion 4 is not lower than the top of the connecting portion 3, so as to ensure that no light can enter from the front of the notch 30.

[0054] In some embodiments, the light shielding portion 4 may be in the shape of a flat plate, made of a light-proof material, and sealedly connected to the guide surface 11 .

[0055] In some embodiments, a protrusion 23 is provided at the bottom of the cover body 2. The protrusion 23 abuts against the inner side wall of the cavity 10 connected to the guide surface 11, so that when the cover body 2 is installed, it can be clamped in the cavity 10 by relying on the protrusion 23. Further, the protrusion 23 and the notch 30 are arranged opposite each other, and a groove 24 is provided on the side of the protrusion 23 facing the notch 30. The groove 24 extends from the top of the box body 1 to the bottom thereof, and the groove 24 connects the notch 30 and the inside of the cavity 10. In this way, after the liquid medicine flows out of the notch 30, it directly flows to the groove wall of the groove 24, and then flows into the cavity 10 along the groove wall of the groove 24, which can prevent the liquid medicine from directly impacting the film arranged in the cavity 10.

[0056] In some embodiments, both sides of the protrusion 23 should extend beyond both sides of the notch 30 , so that the notch 30 is completely blocked by the protrusion 23 , and the drug solution can only flow into the cavity 10 along the wall of the groove 24 .

[0057] See also Figure 7In some embodiments, in order to prevent the accumulation of the liquid medicine on the guide surface, a first guide groove 15 may be provided on the guide surface 11. The first guide groove 15 may be formed by a depression of the portion of the guide surface 11 close to the notch 30. The bottom wall of the first guide groove 15 is connected to the inner side wall of the cavity 10. The first guide groove 15 extends into the notch 30, and the side wall of the first guide groove 15 is connected to the body of the guide surface 11. The bottom wall of the first guide groove 15 is inclined toward the bottom end of the box body 1, and the liquid medicine flows into the notch 30 through the first guide groove 15, and finally flows into the cavity 10.

[0058] In some embodiments, by setting up the first guide groove 15, the height difference can be utilized to continuously introduce the medicine liquid on the guide surface 11 into the first guide groove 15, so as to further enable the medicine liquid to overcome the surface tension of the guide surface 11, so that the medicine liquid can continue to flow into the cavity 10 through the first guide groove 15.

[0059] In some embodiments, the first guide groove 15 is formed by enclosing two side walls and a bottom wall connected thereto, one end of the two side walls of the first guide groove 15 can be connected to the two ends of the notch 30 respectively, and the other end of the two side walls is connected to the light shielding portion 4. In addition, the two side walls are connected together at the light shielding portion 4, so that the two side walls are inclined relative to the light shielding portion 4 and the connecting portion 3, and the effect of the liquid medicine overcoming the surface tension of the guide surface 11 is better.

[0060] In some embodiments, the inner wall of the cavity 10 connected to the guide surface 11 is recessed to form a second guide groove 16, the top of the second guide groove 16 is connected to the first guide groove 15, and the second guide groove 16 extends from the top of the box body 1 to its bottom, so that the medicine liquid can flow continuously from the guide surface 11 to the first guide groove 15 and the second guide groove 16. The first guide groove 15 and the second guide groove 16 form a liquid leakage guide structure to guide the medicine liquid to flow into the cavity 10 along it.

[0061] In some embodiments, the depression depth of the second guide groove 16 gradually decreases from the top to the bottom of the box body 1, and the bottom wall of the second guide groove 16 can play a guiding role, allowing the medicine liquid to flow into the cavity 10 along the bottom wall of the second guide groove 16.

[0062] In some embodiments, the width of the second guide groove 16 gradually decreases from the top to the bottom of the box body 1, so that the second guide groove 16 can form a sharp structure, further puncturing the surface tension of the guide surface 11 and preventing the drug solution from accumulating on the guide surface 11.

[0063] See also Figure 8In some embodiments, the guide surface 11 is tilted toward the bottom of the box body 1. By tilting the guide surface 11 toward the bottom of the box body 1, the liquid medicine thereon can overcome the surface tension of the guide surface 11 under the influence of its own gravity, and continuously move toward the direction of the cavity 10, and finally gather at the first guide groove to flow into the cavity 10, thereby avoiding the accumulation of liquid medicine. Even if a small amount of liquid medicine remains, it will remain at a position close to the connecting portion 3 under the influence of its own gravity, and this position can be covered by the cover body 2 to avoid the liquid medicine being exposed to the outside, thereby completely eliminating the potential safety hazards to the user.

[0064] In some embodiments, the inclination angle of the guide surface 11 toward the bottom of the box body 1 should be moderate, and the inclination angle can be between 1° and 30°, so as to avoid the height of the cavity 10 being limited and affecting the volume of the cavity 10 due to an excessive inclination angle. The inclination angle can be 1°, 15° or 30°, etc.

[0065] In summary, in this embodiment, by tilting the guide surface 11 toward the bottom end of the box body 1, the influence of its own gravity can be utilized to accelerate the flow of the medicine liquid along the guide surface 11 toward the cavity 10, and cooperate with the first guide groove 15 and the second guide groove 16 to overcome the surface tension of the guide surface 11, so that after the medicine liquid is added to the guide surface 11, it can flow continuously into the cavity 10 to avoid its accumulation on the guide surface 11.

[0066] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0067] In the description of this specification, the description with reference to the terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0068] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A film developing box, characterized in that: include: A box body, wherein the interior of the box body is hollow to form a cavity, the top of the box body is provided with an opening connected to the cavity, the cavity is used to accommodate the film to be developed, at least a part of the top end surface of the box body forms a guide surface, the guide surface is provided with a first guide groove, the bottom wall of the first guide groove is connected to the inner side wall of the cavity, and the bottom wall of the first guide groove is inclined toward the bottom end of the box body; A cover body is detachably covered on the top of the cavity, the cover body covers a portion of the guide surface, and there is a gap between the cover body and the guide surface to form a channel connecting the first guide groove and the external environment, and the channel is used for liquid medicine to enter the cavity to wash the film.

2. The film developing box according to claim 1, characterized in that: The inner wall portion of the cavity connected to the guide surface is recessed to form a second guide groove. In the direction from the top end to the bottom end of the box body, the recessed depth of the second guide groove gradually decreases. The top end of the second guide groove is connected to the first guide groove, and the medicine flows into the cavity through the first guide groove and the second guide groove in sequence.

3. The film developing box according to claim 2, characterized in that: In the direction from the top end to the bottom end of the box body, the width of the second guide groove gradually decreases.

4. The film developing box according to claim 1, characterized in that: The top outer edge of the box body is provided with a side enclosure, the side enclosure protrudes from the top of the box body, the cavity is located in the side enclosure, and the cover body is detachably arranged in the side enclosure.

5. The film developing box according to claim 4, characterized in that: The cover body is in contact with the top end surface of the box body, and a gap is formed between the portion of the side enclosure connected to the guide surface and the cover body. The gap is connected to the external environment and the channel, and the liquid medicine flows into the channel through the gap and the guide surface.

6. The film developing box according to claim 5, characterized in that: The film developing box also includes a connecting portion, which is connected to one end of the guide surface close to the cavity and is arranged opposite to the part of the side enclosure connected to the guide surface. A notch is arranged on the connecting portion, and the first guide groove extends into the notch.

7. The film developing box according to claim 6, characterized in that: The film developing box further comprises a light shielding portion, which is arranged on the portion of the guide surface covered by the cover body, and is arranged with a relative spacing from the notch, and the area between the light shielding portion and the connecting portion forms the channel.

8. The film developing box according to claim 7, characterized in that: Two ends of the light shielding portion in the length direction thereof respectively exceed the opposite ends of the notch, and the top end of the light shielding portion is not lower than the top end of the connecting portion.

9. The film developing box according to claim 6, characterized in that: A protrusion is provided at the bottom of the cover body, the protrusion abuts against the inner side wall in the cavity connected to the guide surface, the protrusion is arranged opposite to the notch, and a groove is provided on the side of the protrusion facing the notch, the groove extends from the top end of the box body to the bottom end thereof, and the groove connects the notch and the inside of the cavity.

10. The film developing box according to claim 5, characterized in that: The top end surface of the box body is recessed toward the bottom end of the box body away from the cavity to form a slot with the side enclosure, and the bottom edge of the cover body is snapped into the slot.

Images