A Polaroid camera with a digital display of the number of remaining sheets of paper

Abstract

This utility model discloses an instant camera that digitally displays the remaining amount of photographic paper. The camera includes a body with a digital display component for displaying the remaining amount of photographic paper. A paper output port is located on one side of the body. The body also includes a photographic paper loading cassette for loading photographic paper, a photographic paper hook assembly for pushing photosensitive paper or protective film from the loading cassette to the paper output port, at least one photographic paper output detection component for detecting whether photographic paper or protective film has been output, and a control component connected to both the digital display component and the photographic paper output detection component. This control component receives detection information from the photographic paper output detection component, calculates the remaining amount of photographic paper based on the detection information, and controls the digital display component to display the result. By determining whether photographic paper or protective film has been output to the camera based on the information detected by the photographic paper output detection component, the remaining amount of photographic paper is calculated and displayed on the digital display component, thus improving the accuracy of the remaining photographic paper quantity detection.

Description

[Technical Field]

[0001] This utility model relates to an instant camera that digitally displays the remaining amount of photographic paper. [Background Technology]

[0002] In existing instant cameras, a mechanical counter is typically used to display the remaining film quantity. This mechanical counter links the film hook to a counter via gears. After each film hook action, the counter rotates the film display wheel once, decrementing the displayed film quantity by one. Conversely, when the user opens the back cover of the film compartment, the counter resets the film display wheel, returning the displayed film quantity to its initial state, typically displayed as "S". When new film is loaded and the film hook first picks up the first protective film from the output film tray, the counter displays the maximum quantity of 10. This method of displaying the remaining film quantity has the following problems:

[0003] 1. The mechanical counting device is prone to malfunction;

[0004] 2. When the photo paper hook moves but fails to pick up the photo paper, the number of photo papers will decrease by one, but in reality, the number of photo papers has not decreased, causing the displayed data to be incorrect. [Utility Model Content]

[0005] This invention overcomes the shortcomings of the prior art and provides an instant camera that digitally displays the remaining amount of photographic paper.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A Polaroid camera that digitally displays the remaining amount of photographic paper, characterized in that: it includes a body, the body is provided with a digital display component for displaying the remaining amount of photographic paper, a paper outlet is provided on one side of the body, the body is provided with a photographic paper loading cassette for loading photographic paper, a photographic paper hook assembly for pushing the photographic paper or protective film in the photographic paper loading cassette to the paper outlet, at least one photographic paper output detection component for detecting whether photographic paper or protective film has been output, and a control component connected to the digital display component and the photographic paper output detection component respectively, for receiving detection information from the photographic paper output detection component, calculating the remaining amount of photographic paper based on the detection information, and controlling the digital display component to display the remaining amount.

[0008] The instant camera described above, which displays the remaining amount of photographic paper, is characterized in that: the photographic paper output detection component can be a photoelectric sensor disposed inside the camera body to detect the output of photographic paper from the camera body to the outside; the control component is connected to the photoelectric sensor and calculates the remaining amount of photographic paper based on the detected photoelectric information.

[0009] An instant camera with a digital display showing the remaining amount of photographic paper, as described above, is characterized in that: the photographic paper hook assembly includes a photographic paper hook disposed within the camera body to push photosensitive photographic paper or protective film from the photographic paper loading cassette to the paper output port, and a hook motor that drives the photographic paper hook to move and increases the current when the photographic paper hook is driven to hook the photographic paper or protective film; the photographic paper output detection assembly may be a current detection module that detects the operating current of the hook motor; and the control assembly calculates the remaining amount of photographic paper based on the detected current value of the current detection module.

[0010] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: the body is provided with a rotating roller assembly disposed on the paper outlet for feeding photographic paper or protective film out of the paper outlet; the photographic paper output detection assembly may be a pressure sensor that contacts one of the rotating rollers of the rotating roller assembly for detecting the pressure of the rotating roller; and the control assembly is connected to the pressure sensor and calculates the remaining amount of photographic paper based on the detected pressure information.

[0011] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: the body is provided with a rotating roller assembly disposed on the paper output port for feeding photographic paper or protective film out of the paper output port; the photographic paper output detection assembly may be a position sensor that contacts one of the rotating rollers of the rotating roller assembly for detecting the position of the rotating roller; and the control assembly is connected to the position sensor and calculates the remaining amount of photographic paper based on the detected position information.

[0012] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: the camera body is provided with a photographic paper tray detector connected to the control component for detecting whether the photographic paper loading tray has been loaded.

[0013] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: a rear cover is provided on the rear side of the camera body for sealing the photographic paper loading box, and a rear cover detector connected to the control component is provided on the camera body for detecting whether the rear cover is open.

[0014] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: the digital display component is provided with an 18-digit digital tube for displaying the remaining amount of photographic paper.

[0015] An instant camera that displays the remaining amount of photographic paper as described above is characterized in that: a body groove is provided on the upper side of the body, the digital display component is disposed in the body groove, and the body groove cover is provided with a cover.

[0016] The instant camera that displays the remaining amount of photographic paper as described above is characterized in that: the bottom surface of the inner side of the groove of the body is provided with multiple slots, and the lower side of the cover is provided with multiple buckles that respectively cooperate with the slots.

[0017] The beneficial effects of this utility model are:

[0018] This invention provides a digital display component for displaying the remaining quantity of photographic paper, a photographic paper output detection component for detecting whether photographic paper or protective film has been output, and a control component connected to the digital display component and the photographic paper output detection component. The control component receives detection information from the photographic paper output detection component, calculates the remaining quantity of photographic paper based on the detection information, and controls the digital display component to display the result. The control component determines whether photographic paper or protective film has been output to the camera based on the information detected by the photographic paper output detection component, thereby calculating the remaining quantity of photographic paper and displaying it on the digital display component. This overcomes the problem of mechanical failures in existing mechanical counting devices. The digital display allows users to intuitively view the remaining quantity of photographic paper, improves the accuracy of remaining quantity detection, and avoids the problem of reduced remaining quantity due to un-hooked photographic paper or protective film. [Image Description]

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is one of the exploded views of this utility model;

[0021] Figure 3 This is a diagram of the internal structure of the body of this utility model;

[0022] Figure 4 This is the second exploded view of the present invention;

[0023] Figure 5 This is the third exploded view of the present invention;

[0024] Figure 6 This is a schematic diagram of the bottom of the cover of this utility model;

[0025] Figure 7 This is one of the circuit diagrams of this utility model;

[0026] Figure 8 This is the second circuit diagram of this utility model. [Detailed Implementation]

[0027] The technical solutions in the embodiments of this utility model will now be clearly and completely described in conjunction with the accompanying drawings.

[0028] It should be noted that all directional indications in the embodiments of this utility model (such as up, down, left, right, front, back, etc.) are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions involving "preferred," "second-preferred," etc. in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "preferred" or "second-preferred" may explicitly or implicitly include at least one of those features.

[0029] It is necessary to add corresponding embodiments and state their technical effects in conjunction with the claims, and to match and adjust the embodiments below in conjunction with the claims.

[0030] like Figure 1-4 As shown, an instant camera that digitally displays the remaining amount of photographic paper includes a body 1, a digital display component 2 for displaying the remaining amount of photographic paper, a paper outlet 3 on one side of the body 1, a photographic paper loading cassette 4 for loading photographic paper, a photographic paper hook assembly 5 for pushing the photographic paper or protective film in the photographic paper loading cassette 4 to the paper outlet 3, at least one photographic paper output detection component for detecting whether photographic paper or protective film has been output, and a control component connected to the digital display component 2 and the photographic paper output detection component respectively, for receiving detection information from the photographic paper output detection component, calculating the remaining amount of photographic paper based on the detection information, and controlling the digital display component 2 to display the remaining amount.

[0031] As described above, in specific implementation, after the user presses the shooting button, the photo paper hook assembly 5 pushes the photosensitive photo paper or the protective film on the front side of the photo paper loading cassette 4 to the paper output port 3 for output. During this process, the photo paper output detection assembly detects whether photo paper or protective film has been output. When the photo paper output detection assembly detects that photo paper or protective film has been output, it sends the detection information to the control assembly. The control assembly calculates the remaining amount of photo paper based on the detection information and displays the remaining amount of photo paper through the digital display assembly 2, improving the accuracy of the remaining amount of photo paper detection and avoiding the problem of the remaining amount of photo paper decreasing due to photo paper not being hooked and output. At the same time, the digital display allows the user to intuitively view the remaining amount of photo paper information.

[0032] As mentioned above, in practical applications, the size, material, friction, thickness, and color of photographic paper and protective film are different. Therefore, the detection information obtained by the photographic paper output detection component for photographic paper or protective film is also different. The control component can determine whether the output is photographic paper or protective film based on the detection information of the photographic paper output detection component, and then calculate the remaining quantity of photographic paper to improve the accuracy of the remaining quantity calculation.

[0033] As described above, in a specific implementation, one embodiment of the photographic paper output detection component can be a photoelectric sensor installed inside the machine body 1 to detect the output of photographic paper from inside the machine body 1 to the outside. The control component is connected to the photoelectric sensor and calculates the remaining quantity of photographic paper based on the detected photoelectric information. Thus, because the photographic paper and the protective film are of different colors, the detection information generated when the photographic paper and the protective film pass through the photoelectric sensor are different. Therefore, in practical applications, this embodiment sets a first preset value of photoelectric signal for determining whether the photographic paper hook component 5 hooks the photographic paper and a second preset value of photoelectric signal for determining whether the protective film is hooked, and the second preset value of photoelectric signal is greater than the first preset value of photoelectric signal. When the photo paper hook assembly 5 is in operation, the photoelectric sensor detects the photoelectric information generated when the photo paper passes through the photoelectric sensor and sends it to the control component. When the control component compares the detected photoelectric information and finds it to be less than a first preset value of photoelectric signal, it determines that the photo paper has been hooked, and the control component calculates the remaining number of photo paper minus one and displays it through the digital display component 2. When the control component compares the detected photoelectric information and finds it to be greater than the first preset value of photoelectric signal and less than the second preset value of photoelectric signal, it determines that the protective film has been hooked, and the control component controls the digital display component 2 to display the maximum number of photo paper, 10. When the control component compares the detected photoelectric information and finds it to be greater than the second preset value of photoelectric signal, it determines that the photo paper hook assembly 5 is in an unloaded state without hooking photo paper or protective film, and the control component does not calculate the remaining number of photo paper.

[0034] As mentioned above, in specific implementation, such as Figure 3-4As shown, the photographic paper hook assembly 5 includes a photographic paper hook 51 disposed within the body 1 to push the photosensitive photographic paper or protective film in the photographic paper loading cassette 4 to the paper output port 3, and a hook motor that drives the photographic paper hook 51 to move and increases the current when the photographic paper hook 51 hooks the photographic paper or protective film. One embodiment of the photographic paper output detection assembly can be a current detection module that detects the operating current of the hook motor, and the control assembly calculates the remaining quantity of photographic paper based on the detected current value of the current detection module. Thus, because the size, material, and frictional force experienced by the photographic paper and protective film are different, the driving force required by the hook camera to drive the photographic paper hook 51 to hook the photographic paper and protective film are also different, and the greater the resistance encountered by the photographic paper hook 51 when hooking, the greater the operating current of the hook motor. Therefore, in practical applications, this embodiment sets a first preset current value for determining whether the photo paper hook 51 hooks the photo paper and a second preset current value for determining whether it hooks the protective film in the control component, and the first preset current value is greater than the second preset current value. When the hook motor drives the photo paper hook 51 to hook, the current detection module detects the current value of the hook motor and sends it to the control component; when the control component compares and finds that the detected current value is greater than the first preset current value, it determines that the photo paper has been hooked, and the control component calculates the remaining number of photo papers minus one and displays it through the digital display component 2; when the control component compares and finds that the detected current value is greater than the second preset current value and less than the first preset current value, it determines that the protective film has been hooked, and the control component controls the digital display component 2 to display the maximum number of photo papers, 10; when the control component compares and finds that the detected current value remains less than the second preset current value, it determines that the hook motor drives the photo paper hook 51 in an unloaded state without hooking photo paper or protective film, and the control component does not calculate the remaining number of photo papers.

[0035] As described above, in a specific implementation, the machine body 1 is equipped with a roller assembly 6 disposed on the paper outlet 3 for feeding photographic paper or protective film out of the paper outlet 3. One embodiment of the photographic paper output detection assembly can be a pressure sensor that contacts one of the rollers of the roller assembly 6 to detect the roller pressure. The control assembly is connected to the pressure sensor and calculates the remaining amount of photographic paper based on the detected pressure information. Thus, since the end of the photographic paper in the instant camera is provided with a developer pack, the photographic paper is thicker than the protective film, so when the photographic paper and the protective film pass through the roller assembly 6 respectively, the pressure exerted by the photographic paper on the roller is greater than the pressure exerted by the protective film on the roller. Therefore, in practical applications, this embodiment is configured in the control assembly to determine a first preset pressure value for the photographic paper hook assembly 5 to hook the photographic paper and a second preset pressure value for the protective film to hook, and the first preset pressure value is greater than the second preset pressure value. When the photo paper hook assembly 5 is in operation, the pressure sensor detects the pressure value of the rotating roller and sends it to the control assembly. When the control assembly finds that the detected pressure value is greater than the first preset pressure value, it determines that the photo paper has been hooked, and the control assembly calculates the remaining number of photo papers minus one and displays it through the digital display assembly 2. When the control assembly finds that the detected pressure value is greater than the second preset pressure value and less than the first preset pressure value, it determines that the protective film has been hooked, and the control assembly controls the digital display assembly 2 to display the maximum number of photo papers, 10. When the control assembly finds that the detected pressure value remains less than the second preset pressure value, it determines that the photo paper hook 51 driven by the hook motor is in an unloaded state and has not hooked any photo paper or protective film, and the control assembly does not calculate the remaining number of photo papers.

[0036] As described above, in a specific implementation, the machine body 1 is equipped with a roller assembly 6 disposed on the paper outlet 3 for feeding photographic paper or protective film out of the paper outlet 3. One embodiment of the photographic paper output detection assembly can be a position sensor that contacts one of the rollers of the roller assembly 6 to detect the position of the roller. The control assembly is connected to the position sensor and calculates the remaining quantity of photographic paper based on the detected position information. Thus, since the end of the photographic paper in the instant camera is provided with a developer pack, the photographic paper is thicker than the protective film. Therefore, when the photographic paper and the protective film pass through the roller assembly 6, the displacement distance of the photographic paper relative to the roller is greater than the displacement distance of the protective film relative to the roller. Therefore, in practical applications, this embodiment sets a first preset displacement value for determining whether the photographic paper hook is hooking the photographic paper and a second preset displacement value for determining whether the protective film is hooking, and the first preset displacement value is greater than the second preset displacement value. When the photo paper hook assembly 5 is in operation, the position sensor detects the position information of the rotating roller and sends it to the control assembly. When the control assembly finds that the detected position information is greater than a first preset displacement value, it determines that the photo paper has been hooked, and the control assembly calculates the remaining number of photo papers minus one and displays it through the digital display assembly 2. When the control assembly finds that the detected position information is greater than a second preset displacement value and less than a first preset displacement value, it determines that the protective film has been hooked, and the control assembly controls the digital display assembly 2 to display the maximum number of photo papers, 10. When the control assembly finds that the detected position information remains less than the second preset displacement value, it determines that the hook motor drives the photo paper hook 51 in an unloaded state without hooking photo paper or protective film, and the control assembly does not calculate the remaining number of photo papers.

[0037] As described above, in a specific implementation, at least one photographic paper output detection component is provided inside the machine body 1. This component can be one or a combination of a photoelectric sensor that detects the output of photographic paper from inside the machine body 1 to the outside, a current detection module that detects the operating current of the hook motor, a pressure sensor that detects the pressure of the rotating roller, and a position sensor that detects the position of the rotating roller. This allows for the installation of different combinations of photographic paper output detection components within the machine body 1 according to different users and usage scenarios, thereby improving the accuracy of detecting and calculating the remaining quantity of photographic paper based on actual usage needs.

[0038] A method for displaying the remaining amount of photographic paper using the aforementioned instant camera includes: when the photographic paper output detection component detects that photographic paper has been output, the control component calculates the remaining amount of photographic paper by one and controls the digital display component 2 to display it; or when the photographic paper output detection component detects that a protective film has been output, the control component controls the digital display component 2 to display the remaining amount of photographic paper as the maximum value; or when a photo-taking command is issued and the photographic paper output detection component does not detect that photographic paper or a protective film has been output, the control component controls the digital display component 2 to display the remaining amount of photographic paper as 0.

[0039] As described above, in specific implementation, when the control component determines that the output is photographic paper based on the detection information from the photographic paper output detection component, the control component calculates and subtracts one from the previous remaining photographic paper quantity, and controls the digital display component 2 to display the remaining photographic paper quantity after the subtraction. When the control component determines that the output is protective film based on the detection information from the photographic paper output detection component, the control component controls the digital display component 2 to display the preset maximum remaining photographic paper quantity. When a photo-taking command is issued and the photographic paper output detection component does not detect any output, the control component controls the digital display component 2 to display that the remaining photographic paper quantity is 0. In this way, the function of the control component accurately calculating and displaying the remaining photographic paper quantity based on different detection information from the photographic paper output detection component is achieved.

[0040] As described above, in the specific implementation of the method for displaying the remaining amount of photographic paper in the instant camera, when a shooting command is issued and the photographic paper output detection component does not detect the output of photographic paper or protective film, the control component controls the digital display component to display that the remaining amount of photographic paper is 0.

[0041] As described above, in practical applications, it can be set that if no photo paper output is detected after pressing the shooting button, the control component will display the number of photo paper as 0 through the digital display component 2, indicating that the photo paper has been used up.

[0042] As described above, in the specific implementation of the above method for displaying the remaining amount of photo paper in an instant camera, the number of times that a photo shooting command is issued consecutively and the photo paper output detection component does not detect the output of photo paper or protective film is calculated. If the number of times is less than or equal to a first preset value, the control component controls the digital display component to display the remaining amount of photo paper as the current remaining amount of photo paper.

[0043] And / or,

[0044] The number of times a photo-taking command is issued consecutively and the photo paper output detection component does not detect the output of photo paper or protective film is calculated. If the number of times is greater than a first preset value, the control component controls the digital display component to display that the remaining number of photo papers is 0.

[0045] As described above, in practical applications, it can be set that when no photographic paper output is detected after pressing the shutter button, i.e., the photographic paper hook assembly 5 fails to hook photographic paper or runs out of paper, resulting in no paper output being detected due to the photographic paper hook assembly 5 being unloaded, the control component displays the photographic paper quantity as 0 through the digital display component 2, while storing the previously calculated remaining photographic paper quantity; when photographic paper output is detected after pressing the shutter button again, i.e., the photographic paper hook assembly 5 hooks photographic paper, the control component subtracts one from the stored remaining photographic paper quantity and displays it through the digital display component 2; however, after pressing the shutter button again... If no photographic paper output is detected, it's possible that the photographic paper has truly run out. Therefore, it's normal for the control component to display the photographic paper quantity as 0 via the digital display component 2. However, there's also the possibility that the photographic paper hook component 5 fails to hook any photographic paper again, resulting in an empty load and no photographic paper output being detected. In this case, when the control component displays the photographic paper quantity as 0 via the digital display component 2, it also stores the previously calculated remaining photographic paper quantity to prevent occasional empty load phenomena from causing incorrect display of the photographic paper quantity. This ensures that once the photographic paper hook component 5 resumes normal photographic paper hooking, the photographic paper quantity can continue to be displayed correctly.

[0046] In practical applications, to better determine whether the lack of photo paper output is due to the photo paper hook component 5 failing to pick up photo paper or the photo paper running out, a first preset value for the number of no-load cycles can be set within the control component, such as 2 times. When the number of times no photo paper output is detected after pressing the shutter button is no more than 2 times, the control component continuously displays the previously calculated remaining photo paper quantity via the digital display component 2, meaning the remaining photo paper quantity remains unchanged. Simultaneously, since the probability of multiple consecutive no-load cycles is extremely low, if the number of times no photo paper output is detected after pressing the shutter button is greater than 2 times, it is considered that there is truly no photo paper, and the control component displays the photo paper quantity as 0 via the digital display component 2.

[0047] like Figure 2 and Figure 4 As shown, in a specific implementation, the machine body 1 is equipped with a photo paper tray detector connected to the control component for detecting whether the photo paper loading tray 4 has been loaded. Thus, the photo paper tray detector can detect whether the photo paper loading tray 4 has been loaded into the machine body 1 and whether the photo paper loading tray 4 has been disassembled, thereby detecting whether a new photo paper loading tray 4 has been loaded, improving the accuracy of detecting and calculating the remaining quantity of photo paper.

[0048] like Figure 2 and Figure 4As shown, in a specific implementation, the rear side of the machine body 1 is provided with a rear cover 7 rotatably connected to the machine body 1 for sealing the photographic paper loading cassette 4. The machine body 1 is provided with a rear cover detector connected to the control component for detecting whether the rear cover 7 has been opened. Thus, the rear cover detector can detect whether the photographic paper loading cassette 4 has been loaded or unloaded, thereby improving the accuracy of detecting and calculating the remaining quantity of photographic paper.

[0049] As described above, in the specific implementation of the method for displaying the remaining amount of photo paper in the instant camera, when it is detected that the back cover is opened and the photo paper tray is taken out and then put back in, the control component controls the digital display component to display the remaining amount of photo paper as the current remaining amount of photo paper.

[0050] And / or,

[0051] When it is detected that the back cover is opened and the photo paper box has not been removed, the control component controls the digital display component to display the remaining amount of photo paper as the current remaining amount of photo paper;

[0052] And / or,

[0053] When the back cover is detected to be opened and the photo paper tray is removed and then the back cover is closed, the control component controls the digital display component to display that the remaining amount of photo paper is 0.

[0054] As described above, in practical applications, it can be set that when the rear cover 7 of the photographic paper compartment is opened, the photographic paper loading box 4 is taken out and then put back in, and the rear cover 7 is closed again, the remaining quantity of photographic paper remains unchanged; when the button is pressed again and it is detected that photographic paper has been hooked, the control component subtracts one from the original remaining quantity of photographic paper and displays it through the digital display component 2.

[0055] As described above, in practical applications, it can be set that when the rear cover 7 of the photographic paper compartment is opened, the photographic paper loading box 4 is not taken out, and then the rear cover 7 is closed, the remaining quantity of photographic paper remains unchanged; when the button is pressed again and it is detected that photographic paper has been hooked, the control component subtracts one from the original remaining quantity of photographic paper and displays it through the digital display component 2.

[0056] As described above, in practical applications, it can be set that when the rear cover 7 of the film tray is opened, and the film loading tray 4 is removed but not placed back in, and the rear cover 7 is closed, the remaining film quantity becomes 0 or S. Alternatively, the remaining film quantity becomes 0 or S whenever the rear cover 7 of the film tray is opened. Generally, to prevent film exposure, and for cameras that do not have the capability to detect and determine whether the output is film or protective film, it is more reasonable for the remaining film quantity to become 0 or S when the rear cover 7 of the film tray is opened but the film loading tray 4 is not placed back in.

[0057] As described above, in practical applications, it can be set that when the rear cover 7 of the photographic paper compartment is opened and then closed, and the first hooking operation is performed and the protective film is detected, the control component displays the maximum remaining quantity of photographic paper (10) through the digital display component 2.

[0058] As described above, in practical applications, it can be set that when the rear cover 7 of the photographic paper compartment is opened, and the photographic paper loading box 4 is taken out and put back in before closing the rear cover 7, the remaining quantity of photographic paper remains unchanged; when the button is pressed again and photographic paper is detected to be hooked, the control component subtracts one from the original remaining quantity of photographic paper and displays it through the digital display component 2.

[0059] As described above, in practical applications, it can be set that when the rear cover 7 of the film tray is opened, the film loading cassette 4 is removed and then placed back in, and the rear cover 7 is closed, the control component displays the remaining film quantity as S via the digital display component 2; after pressing the button again and outputting the protective film, the remaining film quantity is displayed as the maximum value of 10. Generally, to prevent film exposure, after the film loading cassette 4 is placed in the film tray of the camera body 1, the rear cover 7 of the film tray will not be opened until the film is used up. Therefore, opening and closing the rear cover 7 of the film tray usually occurs when the film in the previous film loading cassette 4 has been used up and a new film loading cassette 4 is being replaced. Therefore, in cameras that do not have the capability to detect whether the output is film or protective film, it is more reasonable for the control component to control the digital display component 2 to display the remaining film quantity as S after opening the rear cover 7 of the film tray, replacing the new film loading cassette 4, and then closing it, with the remaining film quantity displayed as the maximum value of 10 after pressing the button again. At this point, it can also be set that when the back cover 7 is opened and the photo paper loading cassette 4 is not yet used up, after the photo paper loading cassette 4 is put back and the back cover 7 is closed, the number of photo papers becomes S. After pressing the button again, the remaining number of photo papers is displayed as the maximum value of 10. However, in reality, there are not 10 sheets of photo paper in the photo paper loading cassette 4. If the user detects that the photo paper hook is empty during continued use, the remaining number of photo papers will be directly displayed as 0. Or, if the number of consecutive empty times exceeds the preset number of empty times, the remaining number of photo papers will be directly displayed as 0. For example, when only 5 sheets of photo paper remain in the re-inserted photo paper cassette, after hooking it 5 more times, the remaining number of photo papers is displayed as 6. If the 6th time the photo paper is hooked and it is empty, or if the number of consecutive empty times exceeds the preset number of empty times, the remaining number of photo papers will be directly displayed as 0.

[0060] like Figure 5 As shown, in a specific implementation, the digital display component 2 is equipped with an 18-digit digital tube for displaying the remaining quantity of photographic paper. Thus, by setting the digital display component 2, users can quickly and clearly view the remaining quantity of photographic paper.

[0061] like Figure 5-6 As shown, in a specific implementation, the upper side of the body 1 is provided with a body groove 11, the digital display component 2 is disposed in the body groove 11, and the body groove 11 is covered with a cover 8. Thus, the cover 8 serves to protect the digital display component 2.

[0062] like Figure 5-6 As shown, in a specific implementation, the inner bottom surface of the body groove 11 is provided with multiple slots 12, and the lower side of the cover 8 is provided with multiple buckles 81 that respectively cooperate with the slots 12. In this way, the cover 8 can be quickly and securely installed on the body groove 11.

[0063] like Figure 7 As shown, in a specific implementation, the control module of the instant camera is the control chip U1; the 18-digit digital tube in the digital display component 2 is composed of LEDs A1-G1 and LEDs C3-D3, and LEDs A2-D2, A3-B3 and E3 are used by the digital display component 2 to display low battery warning function, flash charging status warning function and current scene recommended aperture warning function.

[0064] like Figure 7 As shown, in specific implementations, the camera also includes circuits such as an aperture LED indicator circuit, a shutter button detection circuit, a flash control circuit, a flash brightness detection circuit, and a motor position detection circuit; for example... Figure 8 As shown, in actual implementation, the instant camera also includes a power supply battery, a 300V boost circuit, a flash circuit, an MCU power control circuit, a 4V boost circuit, and a drive motor circuit.

[0065] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An instant camera that digitally displays the remaining amount of photographic paper, characterized in that: The device includes an organic body (1), which is provided with a digital display component (2) for displaying the remaining quantity of photographic paper. A paper outlet (3) is provided on one side of the organic body (1). Inside the organic body (1) are a photographic paper loading box (4) for loading photographic paper, a photographic paper hook component (5) for pushing the photosensitive photographic paper or protective film in the photographic paper loading box (4) to the paper outlet (3), at least one photographic paper output detection component for detecting whether photographic paper or protective film has been output, and a control component connected to the digital display component (2) and the photographic paper output detection component respectively, for receiving the detection information of the photographic paper output detection component and calculating the remaining quantity of photographic paper according to the detection information and controlling the display of the digital display component (2).

2. The instant camera with a digital display showing the remaining amount of photographic paper according to claim 1, characterized in that: The photo paper output detection component can be a photoelectric sensor installed inside the body (1) to detect the output of photo paper from inside the body (1) to the outside. The control component is connected to the photoelectric sensor and calculates the remaining number of photo papers based on the detected photoelectric information.

3. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The photographic paper hook assembly (5) includes a photographic paper hook (51) disposed in the body (1) to push the photosensitive photographic paper or protective film in the photographic paper loading box (4) to the paper outlet (3), and a hook motor that drives the photographic paper hook (51) to move and increases the current when the photographic paper hook (51) hooks the photographic paper or protective film. The photographic paper output detection assembly can be a current detection module that detects the working current of the hook motor. The control assembly calculates the remaining quantity of photographic paper based on the detected current value of the current detection module.

4. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The machine body (1) is provided with a rotating roller assembly (6) installed on the paper outlet (3) for sending photographic paper or protective film out of the paper outlet (3). The photographic paper output detection assembly can be a pressure sensor that contacts one of the rotating rollers of the rotating roller assembly (6) for detecting the pressure of the rotating roller. The control assembly is connected to the pressure sensor and calculates the remaining amount of photographic paper based on the detected pressure information.

5. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The machine body (1) is provided with a rotating roller assembly (6) installed on the paper outlet (3) for sending photographic paper or protective film out of the paper outlet (3). The photographic paper output detection assembly can be a position sensor that contacts one of the rotating rollers of the rotating roller assembly (6) for detecting the position of the rotating roller. The control assembly is connected to the position sensor and calculates the remaining quantity of photographic paper based on the detected position information.

6. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The body (1) is equipped with a photo paper box detector connected to the control component for detecting whether the photo paper loading box (4) is loaded.

7. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The rear side of the body (1) is provided with a rear cover (7) which is rotatably connected to the body (1) for sealing the photo paper loading box (4). The body (1) is provided with a rear cover detector connected to the control component for detecting whether the rear cover (7) is open.

8. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The digital display component (2) is equipped with an 18-digit digital tube for displaying the remaining quantity of photographic paper.

9. An instant camera that digitally displays the remaining amount of photographic paper according to claim 1, characterized in that: The upper side of the body (1) is provided with a body groove (11), the digital display component (2) is disposed in the body groove (11), and the body groove (11) is provided with a cover (8).

10. An instant camera that digitally displays the remaining amount of photographic paper according to claim 9, characterized in that: The inner bottom surface of the groove (11) of the body is provided with multiple slots (12), and the lower side of the cover (8) is provided with multiple buckles (81) that respectively cooperate with the slots (12).

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