A drawer type apparatus for multi-set tobacco dark box testing
By designing a drawer-shaped camera cover and a dark box drawer, combined with a controllable light source and a black background cloth, the problems of limited space and low shooting efficiency in multiple tobacco leaf dark box experiments were solved, and efficient research on the color change characteristics of tobacco leaves was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA NAT TOBACCO CORP FUJIAN CO FUJIAN TOBACCO MONOPOLY BUREAU
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-29
AI Technical Summary
Existing technologies require high site conditions for multi-group tobacco leaf darkroom tests, have low shooting efficiency, and involve cumbersome and complex processes.
Design a drawer-type device, including a camera cover, a support component, and a darkroom drawer. The darkroom drawer is sealed to the camera cover to form a three-dimensional drawer-type darkroom. Using a controllable light source and a black background cloth, multiple groups of tobacco leaves can be photographed in the dark.
It saves space for multiple sets of tobacco leaf darkroom experiments, improves shooting efficiency, meets the environmental requirements of darkroom experiments, and simplifies the operation process.
Smart Images

Figure CN224303576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tobacco leaf testing equipment, and in particular to a drawer-type device for multi-group tobacco leaf dark chamber testing. Background Technology
[0002] The curing characteristics of different varieties and parts of tobacco leaves are important criteria for judgment before curing operations and are of great concern to tobacco workers. Among them, the color change characteristics of tobacco leaves represent their ease of curing and curing resistance, and are often investigated through dark chamber tests. Currently, there is increasing research on the color change characteristics of tobacco leaves in experiments, and the number of groups in dark chamber tests is also constantly increasing. The national standard GB / T18771.1 has strict requirements for the environment of dark chamber tests on tobacco leaves, stipulating that the dark chamber test should be conducted in a dark, unventilated environment at room temperature. Therefore, conducting simultaneous dark chamber tests on multiple groups of tobacco leaves places high demands on the experimental site and makes photographing and recording the tobacco leaves difficult. Existing photographic methods mostly involve photographing different groups of tobacco leaves in one dark chamber, requiring the tobacco leaves to be moved in and out each time, while also ensuring the operating environment of the dark chamber during photography, making the process cumbersome and complex.
[0003] Existing technology, such as the Chinese utility model patent with publication number CN 219864371 U and publication date of October 20, 2023, discloses an assemblable small tent for tobacco leaf dark chamber experiments. This tent includes a box-shaped frame, an outer cover for a light-blocking component, at least two hooks for attaching tobacco hanging rods on the upper part of the box-shaped frame, and a background cloth on the lower part of the box-shaped frame. While this patent allows for observation and photography of tobacco leaves during dark chamber experiments, minimizing errors, photographing different groups of tobacco leaves still requires handling and rearranging the leaves before taking pictures. This is limited by the dark chamber and the process is cumbersome. Photographing multiple groups of tobacco leaves requires significant space, is time-consuming, and has low efficiency. Utility Model Content
[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a drawer-type device for multi-group tobacco leaf dark chamber experiments, which solves the problems of large space limitations and low shooting efficiency in existing multi-group tobacco leaf dark chamber experiments.
[0005] The technical solution of this utility model is implemented as follows: a drawer-type device for multiple groups of tobacco leaf dark chamber tests includes a camera cover for mounting a camera, a number of evenly distributed supplementary lighting components are provided on the camera cover, a support component is provided below the camera cover, and a dark chamber drawer that cooperates with the camera cover is slidably connected to the support component. The dark chamber drawer is located below the camera cover and is sealed to the camera cover. The dark chamber drawer includes at least two drawer boxes, and the upper part of the drawer box is provided with a drawer cover.
[0006] Furthermore, the camera cover is provided with a camera hole, and the camera cover includes at least four circumferentially distributed trapezoidal plates, which are connected in sequence to form a truncated cone, with the camera hole located at the upper part of the truncated cone.
[0007] Furthermore, the supplementary lighting assembly includes at least four controllable light sources connected to the inner wall of the camera housing.
[0008] Furthermore, the support assembly includes at least four drawer supports, each with a plurality of pads for supporting the drawer box.
[0009] Furthermore, the gasket is an L-shaped gasket, which is connected between two adjacent drawer supports and slides in conjunction with the L-shaped groove at the bottom of the drawer box.
[0010] Furthermore, the support assembly also includes a U-shaped light shield, which is disposed on the outside of two adjacent drawer supports. The lower part of the U-shaped light shield is connected to a base plate, and the upper part of the U-shaped light shield is connected to a camera cover.
[0011] Furthermore, the bottom of the drawer is covered with a background cloth.
[0012] Furthermore, the background cloth is a black background cloth.
[0013] Furthermore, the drawer is equipped with a drawer handle.
[0014] Furthermore, the drawer lid is provided with a drawer lid handle.
[0015] The beneficial effects of this utility model are as follows: the camera cover and the dark box drawer of this utility model are combined to form a three-dimensional drawer-type dark box, which saves the space required for multiple sets of tobacco leaf dark box experiments and improves the efficiency of dark box experiments. Attached Figure Description
[0016] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a bottom view of the camera cover;
[0019] Figure 3 This is a schematic diagram of the structure of the dark drawer;
[0020] Figure 4 A schematic diagram of the supporting components;
[0021] Figure 5 This is a schematic diagram showing the fit between the U-shaped light-shielding plate and the base plate.
[0022] In the picture: 1. Camera cover, 1-1. Controllable light source, 1-2. Camera hole, 1-3. Trapezoidal plate, 2. Drawer support, 2-1. Gasket, 2-2, 3. Dark drawer, 3-1. Drawer lid, 3-2. Drawer lid handle, 3-3. Drawer handle, 3-4. Black background cloth, 3-5. Drawer box, 4. U-shaped light shield, 5. Base plate. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 5 The present invention provides an embodiment: a drawer-type device for multiple groups of tobacco leaf dark chamber tests, including a camera cover 1 for mounting a camera, a plurality of evenly distributed supplementary lighting components on the camera cover 1, a support component below the camera cover 1, and a dark chamber drawer 3 that cooperates with the camera cover 1 slidably connected to the support component. The dark chamber drawer 3 is located below the camera cover 1 and is sealed to the camera cover 1. The dark chamber includes at least two drawer boxes, and the upper part of the drawer box is provided with a drawer cover. The camera cover 1 and the dark box drawer 3 work together to form a three-dimensional drawer-type dark box. The dark box drawer 3 includes at least two drawers. The light shield and the base plate 5 also work together with the camera cover 1 to form a dark box structure that allows the drawers to pass through. Multiple sets of tobacco leaves can be placed in one dark box drawer-type device. At the same time, the drawer cover 3-1 is placed on the drawer 3-5. The drawer cover 3-1 can ensure that the tobacco leaves are always in a dark state when the drawer 3-5 is adjusted downwards. The top drawer 3-5 is the shooting box. When it is necessary to take pictures, the top drawer cover 3-1 is pulled out, and the camera takes pictures of the tobacco leaves in the first camera layer drawer 3-5. After taking pictures, the top drawer 3-5 and the lower drawer 3-5 to be photographed are rearranged into the correct order. This utility model device saves the space required for multiple sets of tobacco leaf dark box experiments and improves the efficiency of dark box experiments.
[0025] Please continue reading Figure 2As shown, in one embodiment of the present invention, the camera cover 1 is provided with a camera hole 1-2. The camera cover 1 includes at least four circumferentially distributed trapezoidal plates 1-3, which are sequentially connected to form a truncated cone. The camera hole 1-2 is located on the upper part of the truncated cone. The camera lens is mounted on the camera hole 1-2 to photograph the tobacco leaves in the dark box drawer 3 corresponding to the camera cover 1. This satisfies the requirement that the dark box test is conducted in a dark, unventilated environment at room temperature, and the dark box drawer 3 is easy to replace, which can improve the photographing efficiency.
[0026] Please continue reading Figure 2 As shown, in one embodiment of the present invention, the supplementary lighting assembly includes at least four controllable light sources 1-1, which are connected to the inner wall of the camera housing 1. The controllable light sources 1-1 are existing supplementary lights. The supplementary lights are attached to the inner wall of the camera housing 1 to provide supplementary lighting for photography, which meets the requirements of the darkroom experiment.
[0027] Please continue reading Figure 4 As shown, in one embodiment of the present invention, the support assembly includes at least four drawer supports 2, and the drawer supports 2 are provided with a plurality of pads 2-1 for supporting the drawer box 3-5. The dark drawer 3 and the pads 2-1 correspond to each other and can support the drawer box 3-5, which facilitates the replacement of the dark drawer box 3-5, and also ensures that the dark drawer 3 and the camera cover 1 are always in a sealed and independent state during the photography process.
[0028] Please continue reading Figure 5 As shown, in one embodiment of the present invention, the gasket 2-1 is an L-shaped gasket 2-1, which is connected between two adjacent drawer supports 2. The L-shaped gasket 2-1 slides into the L-shaped groove at the bottom of the drawer 3-5. The three L-shaped gaskets 2-1 are connected in sequence to form a U-shaped structure, which can ensure that the tobacco leaves are always in a dark state when the dark drawer 3 slides.
[0029] Please continue reading Figure 5 As shown, in one embodiment of the present invention, the supporting component further includes a U-shaped light-shielding plate 4, which is connected to the drawer support 2. The lower part of the U-shaped light-shielding plate 4 is connected to a base plate 5, and the upper part of the U-shaped light-shielding plate 4 is connected to the camera cover 1. The U-shaped light-shielding plate 4 and the base plate 5, together with the camera cover 1, form a dark box structure that allows the drawer to pass through. Pulling the dark box drawer 3 will not cause light leakage from the device, enabling continuous shooting from bottom to top or top to bottom, resulting in higher shooting efficiency.
[0030] Please continue reading Figures 1 to 5 As shown, in one embodiment of the present invention, a background cloth is provided at the bottom of the drawer 3-5.
[0031] Please continue reading Figures 1 to 5 As shown, in one embodiment of the present invention, the background cloth is a black background cloth 3-4.
[0032] Please continue reading Figures 1 to 3 As shown, in one embodiment of the present invention, the drawer box 3-5 is provided with a drawer box handle 3-3.
[0033] Please continue reading Figure 3 As shown, in one embodiment of the present invention, the drawer lid 3-1 is provided with a drawer lid handle 3-2. When shooting is required, the drawer lid 3-1 of the uppermost drawer 3-5 can be pulled out. After shooting, the drawer lids of different layers of the dark box 3 can be changed to the first layer for shooting. Specific Implementation Example 1:
[0034] like Figure 1 As shown, a drawer-type device for multiple sets of tobacco leaf dark chamber experiments includes a camera cover 1, a dark chamber drawer 3, and a drawer support 2. The dark chamber drawer 3 includes at least two drawer boxes 3-5. Multiple sets of tobacco leaves for dark chamber experiments are placed in each drawer box 3-5. The dark chamber drawer 3 is placed on the drawer support 2, and the camera cover 1 is located at the top of the device. The first layer of the drawer support 2 is the camera layer. During the multiple sets of tobacco leaf dark chamber experiments, the drawer boxes 3-5 of the camera layer are replaced accordingly to facilitate the recording of tobacco leaf images. The camera cover is inverted on the top layer of the entire device and includes a camera aperture and a controllable light source. The camera aperture is directly opposite the center of the camera cover, and the controllable light source is located on the four sides of the camera cover, tilted at an angle to converge the light from the four light sources to the center.
[0035] like Figure 2 As shown, the camera cover 1 includes a controllable light source 1-1 and a camera hole 1-2. The controllable light source 1-1 is located on the four trapezoidal surfaces of the camera cover, and the camera hole 1-2 is located at the top of the camera cover to facilitate the camera to take pictures of the tobacco leaves in the dark box drawer 3 of the first camera layer through the camera cover.
[0036] like Figure 3 As shown, the darkroom drawer 3 includes a drawer lid 3-1, a drawer lid handle 3-2, a drawer handle 3-3, and a black background cloth 3-4. The drawer lid handle 3-2 and drawer handle 3-3 are located on the drawer lid 3-1 and the darkroom drawer 3 respectively, facilitating the pulling of the darkroom drawer 3 and the drawer lid 3-1. The black background cloth 3-4 is located at the bottom of the darkroom drawer 3 to facilitate the recording of tobacco leaf images through the camera cover in the first imaging layer. The darkroom drawer is generally rectangular, including a handle and a drawer lid. Handles are installed on the front of the darkroom drawer and on the drawer lid for easy pulling. The darkroom drawer is divided into multiple layers for storing tobacco leaves. The bottom layer of the darkroom drawer is a black background cloth, and the first layer is the imaging layer. Tobacco leaves are placed inside the drawer for imaging. The imaging layer is located on the first layer of all darkroom drawers below the camera cover. When imaging is needed, the drawer lid of this layer of darkroom drawer can be pulled out. After imaging, different layers of darkroom drawers can be sequentially replaced with the first layer for imaging.
[0037] like Figure 4As shown, the drawer support 2 includes four pads 2-1, which facilitates the stability of the overall structure. The height of the drawer support 2 can be adjusted according to the number of drawers 3 in the dark box to ensure the normal operation of the test group. The pads 2-1 are located on the inner side of each drawer support 2, and four pads 2-1 can be set on each layer to facilitate the placement of the dark box drawers 3 on the drawer support 2. The drawer support consists of four cylindrical tubes, including pads. According to the number of layers of the dark box drawers, each layer has four pads located on the four support surfaces.
[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A drawer-type device for multi-group tobacco leaf dark chamber tests, characterized in that: Includes a camera cover (1) for mounting a camera, the camera cover (1) is provided with several evenly distributed supplementary lighting components, a support component is provided below the camera cover (1), and a dark box drawer (3) that cooperates with the camera cover (1) is slidably connected to the support component. The dark box drawer (3) is located below the camera cover (1) and is sealed to the camera cover (1). The dark box drawer (3) includes at least two drawer boxes (3-5), and a drawer cover (3-1) is provided on the upper part of the drawer box (3-5).
2. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 1, characterized in that: The camera cover (1) is provided with a camera hole (1-2). The camera cover (1) includes at least four circumferentially distributed trapezoidal plates (1-3), which are connected in sequence to form a truncated cone. The camera hole (1-2) is located on the upper part of the truncated cone.
3. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 1 or 2, characterized in that: The supplementary lighting assembly includes at least four controllable light source elements (1-1), which are connected to the inner wall of the camera cover (1).
4. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 1, characterized in that: The support assembly includes at least four drawer supports (2), and the drawer supports (2) are provided with a plurality of pads (2-1) for supporting the drawer boxes (3-5).
5. The drawer-type device for multiple groups of tobacco leaf dark chamber tests according to claim 4, characterized in that: The gasket (2-1) is an L-shaped gasket (2-1), which is connected between two adjacent drawer supports (2). The L-shaped gasket (2-1) slides in conjunction with the L-shaped groove at the bottom of the drawer box (3-5).
6. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 4 or 5, characterized in that: The support assembly also includes a U-shaped light shield (4), which is located on the outside of two adjacent drawer supports (2). The lower part of the U-shaped light shield (4) is connected to a base plate (5), and the upper part of the U-shaped light shield (4) is connected to a camera cover (1).
7. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 6, characterized in that: The bottom of the drawer (3-5) is covered with a background cloth.
8. The drawer-type device for multiple groups of tobacco leaf dark chamber tests according to claim 7, characterized in that: The background cloth is a black background cloth (3-4).
9. The drawer-type device for multi-group tobacco leaf dark chamber tests according to claim 8, characterized in that: The drawer box (3-5) is provided with a drawer box handle (3-3).
10. The drawer-type device for multi-group tobacco leaf dark chamber tests according to any one of claims 7 to 9, characterized in that: The drawer lid (3-1) is provided with a drawer lid handle (3-2).