CN215263205U - Darkroom subassembly and check out test set - Google Patents

Abstract

The utility model provides a darkroom subassembly and check out test set, the darkroom subassembly includes box and shading piece, the box has the cavity that is formed by the tank wall around, the box is equipped with through-hole and first recess, the through-hole link up the tank wall, the first recess is located the surface of tank wall, and communicate with the through-hole; the shading part is connected to the outer side of the box body, covers the through hole and at least extends to a part of the groove section of the first groove. Based on above-mentioned structure, if the cavity of outside light entering box needs, need pass through first recess and through-hole in proper order, the light path obtains the extension and has the bending, can reduce the light that gets into the cavity effectively, maintains the inside detection ring border of darkroom.

Description

Darkroom subassembly and check out test set

Technical Field

The utility model belongs to the technical field of medical equipment and specifically relates to a darkroom subassembly and check out test set is related to.

Background

The urea breath test is the first choice method for clinical detection of helicobacter pylori, and the working principle is that the helicobacter pylori secretes a human endophytic agentUrease not present, when the subject orally takes¹⁴After C nuclide labeled urea medicine, the urea is decomposed by urease secreted by helicobacter pylori to generate a band¹⁴C-labelled carbon dioxide and is exhaled from the lungs after blood circulation. The carbon dioxide reacts with the absorbing agent in the gas card to form a gas-containing composition¹⁴A compound of C nuclide, thereby¹⁴C nuclide is collected on the gas collecting card, and then the gas collecting card is transferred to the detection equipment to be captured¹⁴The beta rays generated by the decay of the C nuclide are converted into output current pulses, and the infection condition of the helicobacter pylori in the human body can be judged by recording the number of the pulses. The detection of air collecting card is usually completed in a darkroom with built-in electric elements, the power line and signal line on the electric elements are conveniently extended out, the darkroom in the related art is usually provided with wire holes, however, the external light easily enters the darkroom from the wire holes to influence the detection result.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a darkroom subassembly can reduce the light leak of wire hole department, maintains the inside measuring environment of darkroom.

The utility model discloses still provide a check out test set of using above-mentioned darkroom subassembly.

The utility model adopts the technical proposal that:

a darkroom assembly comprising:

the box body is provided with a cavity surrounded by box walls, the box body is provided with a through hole and a first groove, the through hole penetrates through the box walls, and the first groove is positioned on the outer surfaces of the box walls and is communicated with the through hole;

and the shading piece is connected to the outer side of the box body, covers the through hole and at least extends to a part of the groove section of the first groove.

Furthermore, the box body is provided with a plurality of through holes and a plurality of corresponding first grooves;

and the surface of the box body is also provided with second grooves, one end of each first groove is communicated with the corresponding through hole, and the other end of each first groove is communicated with the second groove.

Further, the light shielding member covers each through hole and each first groove, and extends to at least a partial groove section of the second groove.

Further, the second groove intersects each of the first groove segments.

Furthermore, a third groove corresponding to the first groove is further arranged on the surface of the box body, one end of the first groove is communicated with the through hole, the other end of the first groove is communicated with the third groove, and the third groove and the first groove are arranged in an intersecting manner;

the light shading piece covers the through hole and the first groove and at least extends to a part of groove section of the third groove.

Further, the darkroom assembly also comprises an electric element, wherein the electric element is embedded in the through hole, and a lead of the electric element extends out of the box body through the first groove.

Furthermore, the box body also comprises installation parts positioned in the through hole, wherein the installation parts are arranged at two ends of the through hole, and a channel is formed between the two installation parts;

the electric element is for including the sensor of detection portion, the electric element passes through the installation department is installed in the first recess, just detection portion wears to locate the passageway, and stretch into extremely in the cavity.

Furthermore, the light shading device further comprises a light shading colloid, and the light shading colloid is filled between the light shading piece and the groove wall of the first groove.

Furthermore, the shading piece is attached to the outer surface of the box body and locked on the box body through a plurality of threaded fasteners.

Further, the box includes first casing and second casing, first casing with the second casing closes encloses out cavity and opening, the opening with the cavity intercommunication, the opening is used for supplying the sample business turn over the cavity, first casing with contact site between the second casing is equipped with the step face respectively, first casing with between the second casing the mutual joint of step face is in order to form the shading structure.

Further, still include:

a dark room door connected to the case and rotatable with respect to the case to close or open the opening;

the power part is connected with the box body and is used for driving the darkroom door to rotate;

wherein, the box with the contact site of darkroom door is equipped with the step face respectively, the box with on the darkroom door step face mutual joint is in order to form light-shielding structure.

The detection device comprises the darkroom component.

Has the advantages that:

the darkroom subassembly is provided with light-shading spare, and light-shading spare covers the through-hole and extends to the partial groove section of first recess at least, and outside light if the cavity of box needs to get into, need pass through first recess and through-hole in proper order, and the light path obtains the extension and has the bending, can reduce the light that gets into the cavity effectively, maintains the inside measuring environment of darkroom.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a darkroom according to a first embodiment of the present invention;

FIG. 2 is an exploded schematic view of the darkroom of FIG. 1;

FIG. 3 is a front view of the housing of FIG. 1 coupled to a shade;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

FIG. 5 is a front view of the case and the shade according to the second embodiment of the present invention;

FIG. 6 is a front view of a case and a shade according to a third embodiment of the present invention;

fig. 7 is a front view of a case and a shade according to a fourth embodiment of the present invention;

FIG. 8 is a perspective view of the second housing of FIG. 1 in connection with an electrical component;

FIG. 9 is a top view of the case of FIG. 1;

FIG. 10 is an enlarged schematic view of area A of FIG. 9;

FIG. 11 is a sectional view of the cabinet of FIG. 1 coupled to a light shield door;

fig. 12 is an enlarged schematic view of the region B in fig. 11.

Detailed Description

The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, if a feature is referred to as being "disposed", "fixed", "connected", or "mounted" on another feature, it can be directly disposed, fixed, or connected to the other feature or indirectly disposed, fixed, connected, or mounted on the other feature. In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "more than", "less than" or "within" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

Referring to fig. 1, the darkroom assembly is used for detecting a sample, and can provide a dark environment for a detection device such as a photomultiplier tube to work.

The utility model discloses darkroom subassembly in first embodiment includes box 100, and box 100 is used for placing the sample that waits to detect, and it can be the box body structure of roughly rectangle as shown in the figure, and box wall 110 of box 100 is around forming cavity 120, and the sample can be placed and detect in cavity 120. The case 100 further has an opening 1100 for allowing the sample to enter and exit the cavity 120, and the shape of the opening 1100 is similar to the shape of the sample and is slightly larger than the sample, so as to facilitate the entry and exit of the sample. It can be appreciated that the sample is typically stored in a carrier, such as the gas collection card 700 shown in fig. 2, so that the opening 1100 is a rectangular opening of corresponding shape, with a dimension in the length direction (left-right direction in fig. 2) greater than a dimension in the width direction (left-right direction in fig. 2) of the gas collection card 700, and a dimension in the width direction (front-back direction in fig. 2) of the opening 1100 greater than a dimension in the thickness direction (front-back direction in fig. 2) of the gas collection card 700, so that the gas collection card can pass through the opening 1100 without obstruction. In addition, the opening 1100 is located at the top of the box 100, and the gas collection card 700 can slide in the cavity 120 along the vertical direction under the action of gravity, so that the gas collection card 700 can reach a preset detection position.

Referring to fig. 3 and 4, the dotted line in the figure indicates the outline of the shielded portion. The case 100 is further provided with a through hole 130 and a first groove 140, wherein the through hole 130 penetrates through the case wall 110 and is used for placing an electrical component, and in the example shown in fig. 3, the through hole 130 is a rectangular through hole extending in the left-right direction, and it can be understood that the through hole 130 may have other shapes, such as a square shape, a circular shape, etc., according to the shape of the electrical component. The first groove 140 is a routing channel, which is located on the outer surface of the box wall 110 and is communicated with the through hole 130, so that when the electrical component is installed in the through hole 130, the wires electrically connected to the electrical component can be received in the first groove 140, which is convenient for managing the wires.

When the through hole 130 is a rectangular through hole as shown in fig. 3, the extending direction of the first groove 140 and the extending direction of the through hole 130 may intersect, for example, the through hole 130 extends in the left-right direction, and the first groove 140 extends in the up-down direction, i.e., perpendicular to each other. It can be understood that the extending direction of the first groove 140 may also be parallel to the extending direction of the through hole 130, for example, the first groove 140 communicates with the left end portion or the right end portion of the through hole 130. In addition, the connection position of the first groove 140 and the through hole 130 is not limited to the center position of the through hole 130, and may be shifted toward both ends. The depth of the first groove 140 may be adjusted according to the wire diameter and the number of the conductive wires.

In this embodiment, the box 100 is provided with a plurality of through holes 130 and a plurality of corresponding first grooves 140, and specifically, the box 100 includes two through holes 130 and two first grooves 140. The box 100 is further provided with a second groove 150, the second groove 150 is located on the outer surface of the box wall 110, one end of each first groove 140 is communicated with the corresponding through hole 130, and the other end is communicated with the second groove 150, that is, the wires in each first groove 140 can be gathered into the second groove 150 and then extend out of the second groove 150, so that the wires can be led out uniformly.

The second groove 150 may have a width equal to that of the first groove 140, and may be machined using the same tool when the groove is formed by removing material, for convenience of machining. It will be appreciated that the second groove 150 may also have a different width than the first groove 140, for example wider than the first groove 140, to accommodate convergence of the wires. For similar reasons, the depth of the second groove 150 may be equal to that of the first groove 140, or may be deeper than the first groove 140.

Referring to fig. 1 to 4, the darkroom module further includes a light shielding member 200, the light shielding member 200 is connected to the outer side of the case wall 110, covers each through hole 130 and each first groove 140, and extends to at least a portion of the groove section of the second groove 150, that is, the light shielding member 200 completely covers each through hole 130 and each first groove 140, and covers at least a portion of the second groove 150, taking fig. 3 as an example, the light shielding member 200 covers the first groove section 151 of the second groove 150 that is communicated with each first groove 140, the second groove section 152 of the second groove 150 that is far away from the communication position is exposed outside the light shielding member 200, and the wires can extend from the second groove section 152. Based on the above structure, if the external light needs to enter the cavity 120, the external light needs to sequentially pass through the second groove 150, the first groove 140 and the through hole 130, the light path is prolonged and bent, the light entering the cavity 120 can be effectively reduced, and the dark environment inside the darkroom can be maintained.

The outer surface laminating of light-shielding piece 200 and box 100 to through a plurality of threaded fastener locking on box 100, it is concrete, refer to fig. 3, the four corners of light-shielding piece 200 all locks through threaded fastener, and further, each side of light-shielding piece 200 can also lock through the threaded fastener more than three, so, can reduce the gap between light-shielding piece 200 and box 100, reduce the light leak of light-shielding piece 200 and box 100 junction.

Referring to fig. 3, each first groove 140 may be disposed to intersect with the second groove 150, so that light rays can enter each first groove 140 from the second groove 150 after all the light rays need to be bent, thereby further ensuring the light shielding effect, where "intersection" refers to a relationship of mutual communication between two grooves, and meanwhile, by bending, light rays can enter another groove after needing to be bent correspondingly, including the conditions of end communication ("L" type) of two grooves, end communication ("T" type) of one groove with the middle part of the other groove, and mutual intersection ("cross" type) of two grooves. Specifically, the two first grooves 140 have the same width, and the central axes of the two first grooves are collinear, so that the two first grooves can be machined by the same tool. The second grooves 150 are perpendicular to the two first grooves 140, respectively, to form a "T" shape as a whole. It can be understood that the included angle between the central axis of the second groove 150 and the central axis of the first groove 140 may be other angles, and the included angle between the central axis of the second groove 150 and the central axis of each first groove 140 may be equal or different.

In the above solution, the term "cover" in the present application may refer to a target area (for example, the through hole 130 and the first groove 140, and the first groove segment 151 of the second groove 150) and a partial area adjacent to the target area, and as shown in fig. 3 as an example, along the up-down direction, the first groove 140 is located between two through holes 130, along the left-right direction, and the size of the through hole 130 is greater than that of the first groove 140, so that the light shielding member 200 extends upward beyond the upper edge of the through hole 130 at the upper end, downward beyond the lower edge of the through hole 130 at the lower end, leftward beyond the left edge of the through hole 130, and rightward beyond the right edge of the through hole 130, thereby reducing light leakage at the joint of the light shielding member 200 and the box 100. It can be understood that the relative positions of the through hole 130, the first groove 140 and the second groove 150 are not limited to those shown in the drawings, and when other layout patterns are adopted, the shape of the light shielding member 200 can be adjusted accordingly.

Referring to fig. 5, which shows a schematic diagram of a second embodiment of the present invention, the dotted line in the diagram represents the outline of the shielded portion. The second embodiment differs from the first embodiment in that: the light shielding members 200 are included in the present embodiment, and the light shielding members 200 cover the through holes 130 and extend to at least a partial groove segment of the first groove 140 communicated with the through holes 130. Specifically, the darkroom assembly includes two light-shielding members 200, each light-shielding member 200 completely covers the corresponding through hole 130 and the third groove 141 of the first groove 140 communicating with the through hole 130, and the purpose of shielding light can be achieved in this embodiment as well.

Referring to fig. 6, which shows a schematic diagram of a third embodiment of the present invention, the dotted line in the diagram represents the outline of the shielded portion. The third embodiment differs from the first embodiment in that: in this embodiment, the second grooves 150 communicating with the first grooves 140 may be omitted, the first grooves 140 do not communicate with each other, and the light shielding member 200 covers the through hole 130 and extends to at least a part of the groove section of the first groove 140 communicating with the through hole 130. Specifically, the light shielding member 200 completely covers the corresponding through hole 130 and the third groove section 141 of the first groove 140 communicating with the through hole 130, the fourth groove section 142 away from the communication position is exposed outside the light shielding member 200, and the conductive wires may extend from the fourth groove section 142. In this embodiment, the through holes 130, the first grooves 140 and the light-shielding members 200 are in one-to-one correspondence, and the first grooves 140 are not communicated with each other and are independent from each other, so the arrangement positions of the through holes 130 and the first grooves 140 are more flexible. It can be understood that the number of the through holes 130 and the corresponding first grooves 140 and the light shielding members 200 is at least one.

Referring to fig. 7, which shows a schematic diagram of a fourth embodiment of the present invention, the dotted line in the diagram represents the outline of the shielded portion. The fourth embodiment is a modification based on the third embodiment, and is different from the third embodiment in that: the case 100 of this embodiment has a third groove 1200, one end of the first groove 140 is communicated with the through hole 130, the other end is communicated with the third groove 1200, the third groove 1200 is intersected with the first groove 140, and the light shielding member 200 covers the through hole 130 and the first groove 140 and at least extends to a part of the groove section of the third groove 1200. Specifically, the third groove 1200 is perpendicular to the first groove 140, and the third groove 1200 and the first groove 140 form an "L" shaped structure, the light shielding member 200 completely covers the corresponding through hole 130 and the first groove 140, and covers the fifth groove section 1210, which is in the third groove 1200 and is communicated with the first groove 140, the sixth groove section 1220, which is far away from the communication position, is exposed outside the light shielding member 200, and the conductive wires can extend from the sixth groove section 1220. If external light needs to enter the cavity 120, the external light needs to sequentially pass through the third groove 1200, the first groove 140 and the through hole 130, the light path is prolonged and bent, the light entering the cavity 120 can be effectively reduced, and the dark environment inside the darkroom is maintained.

The first to fourth embodiments may be used alternatively or in combination.

The darkroom assembly further comprises an electrical component 300, wherein the electrical component 300 is embedded in the through hole 130, and the wires of the electrical component 300 pass through the first groove 140 and then directly extend out of the box 100 (based on the third embodiment), or extend out of the box 100 through the second groove 150 (based on the first and second embodiments), or extend out of the box 100 through the third groove 1200 (based on the fourth embodiment). The term "electric element" as used herein refers to an element having an external lead, such as a detection sensor.

Referring to fig. 3 and 8, taking the darkroom assembly in the first embodiment as an example, the darkroom assembly includes two electrical components 300, wherein the two electrical components 300 are respectively embedded in the corresponding through holes 130, and the electrical component 300 at the upper portion is in a disassembled state to clearly show the structure in the corresponding through hole 130. The box 100 further includes a mounting portion 160 located in the through hole 130, a specific boss structure of the mounting portion 160 extends from a hole wall of the through hole 130, and an end surface of the mounting portion 160 facing the outer side of the box 100 is spaced from the outer side surface of the box 100 by a certain distance, so as to define a mounting cavity. The mounting portion 160 has a threaded hole therein. Wherein, the left and right ends of the through hole 130 are provided with mounting parts 160, and a channel 170 is defined between the mounting parts 160 at the two ends.

The electric element 300 may be a sensor, and includes a body 310 and a detecting portion 320, the detecting portion 320 is located in the middle of the body 310, and both the left and right ends of the body 310 exceed the detecting portion 320 and have a through hole. During installation, the body 310 is located in the installation cavity, and the left end and the right end of the body are respectively placed on the corresponding installation parts 160 and are locked by the threaded fasteners. The detecting portion 320 is disposed through the channel 170 and extends into the cavity 120. The electrical component 300 may be embodied as a position sensor, and the two sensors cooperate to detect the position of the movable part within the cavity.

Referring to fig. 4, the darkroom assembly further includes a light-shielding colloid 400, wherein the light-shielding colloid 400 may be filled between the light-shielding member 200 and the groove wall of the first groove 140 (based on the third embodiment), may also be filled between the light-shielding member 200 and the groove wall of the first groove 140, and may also be filled between the light-shielding member 200 and the groove wall of the second groove 150 (based on the first embodiment and the second embodiment), and may also be filled between the light-shielding member 200 and the groove wall of the first groove 140, and may also be filled between the light-shielding member 200 and the groove wall of the third groove 1200 (based on the fourth embodiment), so as to prevent light from entering the cavity 120 from a gap between the conductive wire and the groove wall, and further ensure the light-shielding effect.

Referring to fig. 4, 9 and 10, the box 100 includes a first housing 180 and a second housing 190, and the cross sections of the first housing 180 and the second housing 190 are both substantially "U" shaped, that is, the first housing 180 includes a first base plate 181 and a first side plate 182, and two opposite sides of the first base plate 181 are connected to the first side plate 182; accordingly, the second case 190 includes a second base plate 191 and a second side plate 192, and both opposite sides of the second base plate 191 are connected to the second side plate 192. When assembled, the first side plate 182 interfaces with the corresponding second side plate 192 and is defined by threaded fasteners such that the cavity 120 and the opening 1100 are enclosed between the first base plate 181, the first side plate 182, the second base plate 191, and the second side plate 192. Compared with the mode of directly processing the cavity 120, the first shell 180 and the second shell 190 which are designed in a split mode can be processed independently, so that the processing difficulty is reduced, and a complex structure is conveniently formed on the cavity wall of the cavity 120.

Step surfaces are respectively arranged at contact parts between the first shell 180 and the second shell 190, and the step surfaces between the first shell 180 and the second shell 190 are mutually clamped to form a light shielding structure. Specifically, the end surface of the first side plate 182 facing the second side plate 192 is provided with a first shading groove 183, the end surface of the second side plate 192 facing the first side plate 182 is provided with a first shading protrusion 193, and the first shading protrusion 193 is inserted into the first shading groove 183 to form a shading structure, so that light can be prevented from directly entering the cavity 120, and light leakage at a contact part is reduced. It can be understood that the arrangement positions of the first light shielding groove 183 and the first light shielding protrusion 193 may be interchanged.

It can be understood that, after the first housing 180 and the second housing 190 are assembled into the case 100, the top and the bottom of the case 100 are both in an open state, wherein the top forms the opening 1100, and the bottom needs to be closed, based on the above, the darkroom assembly may further include a base 800 as shown in fig. 1 and 2, the base 800 is connected to the bottom of the case 100, so that the bottom of the case 100 is in a closed state, and accordingly, the contact portion between the base 800 and the case 100 may also be disposed on a step surface similar to the above, so as to form a light shielding structure when connected. As shown in the figure, besides the base 800 can shield the opening at the bottom of the box 100, the portion of the base 800 beyond the box 100 can be provided with a hole, a groove, etc. for connecting the darkroom assembly with the external member.

In addition, as another embodiment, the darkroom assembly may not be provided with the base 800, the first housing 180 may further include a first bottom plate connected to the bottom of the first base plate 181, the two first side plates 182 are located at both sides of the first bottom plate, the second housing 190 includes a second bottom plate connected to the bottom of the second base plate 191, the two second side plates 192 are located at both sides of the second bottom plate, when the darkroom assembly is installed, the first bottom plate and the second bottom plate are butted, so that the bottom of the cabinet 100 is in a closed state, and accordingly, the first bottom plate and the second bottom plate may also be provided with step surfaces similar to the above-described embodiments, so that a light shielding structure is formed when the darkroom assembly and the second bottom plate are connected.

Referring to fig. 1, 2, 11 and 12, the dark room assembly further includes a dark room door 500 and a power member 600, the dark room door 500 being connected to the cabinet 100 and being rotatable with respect to the cabinet 100 to close or open the opening 1100. The power member 600 is connected to the cabinet 100 for driving the dark room door 500 to rotate, the power member 600 may be a driving mechanism having a rotating shaft, such as a motor, etc., and the power member 600 may be directly connected to the rotating shaft of the dark room door 500, thereby directly driving the dark room door to rotate, or may be driven to rotate by a gear train, a synchronous belt mechanism, a synchronous chain mechanism, etc.

The contact parts of the cabinet 100 and the dark room door 500 are also provided with step surfaces, and the step surfaces on the cabinet 100 and the dark room door 500 are mutually clamped to form a light shielding structure. Specifically, the end surface of the dark room door 500 facing the box body 100 is provided with the annular second light-shielding groove 510, the end surface of the box body 100 facing the dark room door 500 is provided with the annular second light-shielding protrusion 1300, and the second light-shielding protrusion 1300 is inserted into the second light-shielding groove 510 to form a light-shielding structure, so that light can be prevented from directly entering the cavity 120, and light leakage at a contact part is reduced. When the box 100 is formed by splicing the first housing 180 and the second housing 190, a part of the second light shielding protrusion 1300 is located on the end surface of the first housing 180 facing the dark room door 500, and another part of the second light shielding protrusion 1300 is located on the end surface of the second housing 190 facing the dark room door 500. It can be understood that the positions of the second light shielding protrusion 1300 and the second light shielding protrusion 1300 may be interchanged.

The utility model discloses still disclose a check out test set, it includes the darkroom subassembly of above-mentioned each embodiment.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.

Claims (12)

1. A darkroom assembly, comprising:

the box body is provided with a cavity surrounded by box walls, the box body is provided with a through hole and a first groove, the through hole penetrates through the box walls, and the first groove is positioned on the outer surfaces of the box walls and is communicated with the through hole;

and the shading piece is connected to the outer side of the box body, covers the through hole and at least extends to a part of the groove section of the first groove.

2. The darkroom assembly of claim 1, wherein the housing is provided with a plurality of through holes and a corresponding plurality of first grooves;

and the surface of the box body is also provided with second grooves, one end of each first groove is communicated with the corresponding through hole, and the other end of each first groove is communicated with the second groove.

3. The darkroom assembly of claim 2, wherein the light shielding member covers each of the through holes and each of the first recesses and extends at least to a portion of the channel section of the second recess.

4. The dark room assembly according to claim 3, wherein said second recess intersects each of said first recesses.

5. The darkroom assembly of claim 1, wherein the surface of the box body is further provided with a third groove corresponding to the first groove, one end of the first groove is communicated with the through hole, the other end of the first groove is communicated with the third groove, and the third groove is intersected with the first groove;

the light shading piece covers the through hole and the first groove and at least extends to a part of groove section of the third groove.

6. The darkroom assembly of claim 1, further comprising an electrical component embedded in the through hole and having a lead extending out of the first recess to an outside of the housing.

7. The darkroom assembly of claim 6, wherein the cabinet further comprises two mounting portions positioned within the through-hole, a channel being formed between the two mounting portions;

the electric element is for including the sensor of detection portion, the electric element passes through the installation department is installed in the first recess, just detection portion wears to locate the passageway, and stretch into extremely in the cavity.

8. The darkroom assembly of claim 6, further comprising a light blocking gel filled between the light blocking member and a wall of the first recess.

9. The darkroom assembly of any one of claims 1 to 8, wherein the light shield is attached to an outer surface of the housing and is secured to the housing by a plurality of threaded fasteners.

10. The darkroom assembly according to any one of claims 1 to 8, wherein the box body comprises a first shell and a second shell, the first shell and the second shell enclose the cavity and the opening, the opening is communicated with the cavity, the opening is used for allowing a sample to enter and exit the cavity, contact portions between the first shell and the second shell are respectively provided with a step surface, and the step surfaces between the first shell and the second shell are mutually clamped to form a light shielding structure.

11. The darkroom assembly of claim 10, further comprising:

a dark room door connected to the case and rotatable with respect to the case to close or open the opening;

the power part is connected with the box body and is used for driving the darkroom door to rotate;

wherein, the box with the contact site of darkroom door is equipped with the step face respectively, the box with on the darkroom door step face mutual joint is in order to form light-shielding structure.

12. A test device comprising the darkroom assembly of any one of claims 1 to 11.

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