A lighting device in a walk-in high and low temperature chamber

Abstract

The utility model discloses a kind of lighting devices in walk-in high-low temperature box, it is related to the technical field of auxiliary lighting of environmental test equipment, including fixed plate, connecting rod, rotary arm and explosion-proof lamp, fixed plate is fixed in high-low temperature box inner top wall, its lower end rotationally connects hollow connecting rod, upper end is provided with threading hole communicated with connecting rod;Connecting rod end fixedly connects the rotary arm of rectangular hollow structure, rotary arm front end detachably installs sealing plate, bottom is provided with through slot, inside fixed slide along length direction;Slide is equipped with sleeve and multiple slip rings on slide rod, sleeve lower end is installed explosion-proof lamp through the connecting arm of through groove, anti-skid handle is equipped on the both sides of explosion-proof lamp, the snap ring of slip ring lower end is used to fixed electric control line.This device rotates around connecting rod with explosion-proof lamp along slide rod by rotary arm, realize whole area illumination coverage in box, convenient operation, applicable to electronic, automobile and other industries walk-in high-low temperature box, provide stable accurate lighting support for test operation.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary lighting technology for environmental testing equipment, specifically a walk-in high and low temperature chamber lighting device. Background Technology

[0002] In product development and quality testing in industries such as electronics and automotive, walk-in high and low temperature chambers are core equipment for simulating extreme temperature and humidity environments. They need to provide cyclic testing conditions of -70℃ to 150℃ for large samples (such as automotive parts, industrial control cabinets, and complete home appliances). Reliable lighting is crucial for ensuring experimental accuracy and operational safety when personnel enter the chamber to place samples, debug wiring, and observe their status. However, existing lighting solutions for walk-in high and low temperature chambers have many technical limitations and fail to meet practical application requirements. On the one hand, traditional lighting has limited coverage and is prone to creating blind spots. Existing walk-in high and low temperature chambers mostly use top-embedded fixed light groups or side wall strip lights. The lighting position is fixed and the light coverage is limited. The light from the light group is difficult to illuminate areas such as the corners of the chamber, the bottom of the sample, or the wiring ports, creating obvious lighting blind spots. When large samples (such as automobile chassis parts or large cabinets) are placed inside the chamber, the samples will block the light, further reducing the effective lighting area. This makes it impossible for personnel to clearly observe the sample status or accurately complete the wiring operation, which can easily lead to wiring errors, sample damage, and other problems, affecting the efficiency and accuracy of the test results.

[0003] On the other hand, installation and maintenance are complex and economical. Traditional fixed lighting often uses an integrated installation structure, which requires disassembling the entire mounting bracket if the lamp unit fails, making the operation cumbersome and time-consuming. While some explosion-proof lighting meets safety requirements, it has a complex structure, high cost (up to several thousand yuan per unit), and can only be used with high and low temperature chambers of specific sizes, resulting in poor versatility. On the other hand, low-cost, simple lighting solutions cannot simultaneously meet the requirements of explosion-proof, high and low temperature resistance, and full-area coverage, creating a dilemma of "high-cost solutions with poor versatility and low-cost solutions with insufficient performance," making it difficult to meet the diverse lighting needs of walk-in high and low temperature chambers of different industries and sizes.

[0004] Therefore, those skilled in the art have provided a walk-in high and low temperature chamber lighting device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to provide a walk-in high and low temperature chamber lighting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A walk-in high and low temperature chamber lighting device includes a fixed plate, a connecting rod, a rotating arm, and an explosion-proof lamp. The connecting rod is rotatably connected to the lower end of the fixed plate via a bearing at its center. The connecting rod has a hollow structure. The rotating arm is fixedly connected to the end of the connecting rod. The rotating arm has a rectangular hollow structure, and the connecting rod communicates with the interior of the rotating arm. A sliding rod is fixedly connected to the interior of the rotating arm along its length. A sliding sleeve and multiple sliding rings are slidably fitted on the sliding rod. The lower end of the sliding sleeve is fixedly connected to the connecting arm. The end of the connecting arm extends through a through groove to the outside of the rotating arm and is fixedly installed with an explosion-proof lamp.

[0007] As a further embodiment of this utility model: the fixing plate is a circular structure with four mounting holes arranged in a ring on it. A wire-passing hole is provided at the center of the upper surface of the fixing plate. The wire-passing hole is connected to the inside of the connecting rod to form a channel for the passage of the electrical control wire.

[0008] As a further improvement of this utility model: the front end face of the rotating arm in the length direction is an open end, and a sealing plate is detachably installed on the open end by bolts; and a through groove is opened at the bottom of the rotating arm along the length direction.

[0009] As a further improvement of this utility model: all of the slip rings are located on the side of the sliding sleeve near the connecting rod, and the lower end of each slip ring is fixedly connected with a retaining ring.

[0010] As a further improvement of this utility model: the electrical control wire of the explosion-proof lamp passes through the wire hole, the inside of the connecting rod, and the inside of the rotating arm in sequence, and the electrical control wire is fixed on multiple retaining rings, and finally connected to the explosion-proof lamp, so that the electrical control wire can be expanded or retracted synchronously when the explosion-proof lamp moves.

[0011] As a further improvement of this utility model: the retaining ring is made of elastic plastic material, and its inner side is provided with an arc-shaped groove. A silicone pad is pasted in the groove, and the electrical control wire is fixed by the elastic clamping force of the retaining ring.

[0012] As a further improvement of this utility model: handles are fixedly connected to both opposite sides of the explosion-proof lamp. The explosion-proof lamp can be pulled by the handles, causing the sliding sleeve to move along the sliding rod, thereby driving the explosion-proof lamp to move back and forth along the length of the rotating arm.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a walk-in high and low temperature chamber lighting device. Through a two-dimensional moving structure of "a rotating arm rotating 360° around a connecting rod + an explosion-proof lamp sliding linearly along the rotating arm," it breaks through the coverage limitations of traditional fixed lighting. This allows the explosion-proof lamp to be precisely moved to any point inside the chamber, avoiding operational errors caused by blind spots and significantly improving the accuracy and efficiency of experimental operations. The non-slip handles on both sides of the explosion-proof lamp are easy for personnel to hold while wearing gloves; pushing or pulling achieves linear movement. The rotating arm rotates without additional tools; the direction can be smoothly adjusted simply by pushing the handles. The electrical control cable is laid out in a concealed path of "threading hole - connecting rod - rotating arm - retaining ring." The elastic fixation of the retaining ring and the protection of the silicone pad ensure that the cable unfolds / retracts synchronously with the explosion-proof lamp, without tangling or falling off, and also prevents the cable from being pinched or damaged by friction. Furthermore, the device is easy to install and maintain. The removable end plate at the front of the rotating arm facilitates the inspection and replacement of the internal sliding rod and slip ring. All component connections are simple, and installation and debugging only require conventional tools, significantly reducing later maintenance costs and equipment downtime. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a walk-in high and low temperature chamber lighting device.

[0015] Figure 2 This is a schematic diagram of the structure of a fixed plate in a walk-in high and low temperature chamber's internal lighting device.

[0016] Figure 3 This is a schematic diagram of the rotating arm through-slot in a walk-in high and low temperature chamber's internal lighting device.

[0017] Figure 4 This is a front view of a walk-in high and low temperature chamber lighting device.

[0018] Figure 5 This is a schematic diagram of the internal structure of the rotating arm in a walk-in high and low temperature chamber lighting device.

[0019] Figure 6 for Figure 5 A magnified view of point a in the middle.

[0020] In the diagram: 1. Fixing plate; 2. Connecting rod; 3. Rotating arm; 4. Explosion-proof light; 5. Mounting hole; 6. Wire hole; 7. Sealing plate; 8. Handle; 9. Through groove; 10. Sliding rod; 11. Sliding sleeve; 12. Connecting arm; 13. Slip ring; 14. Snap ring. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-6 This embodiment provides a walk-in high and low temperature chamber lighting device, including a fixing plate 1, a connecting rod 2, a rotating arm 3, and an explosion-proof lamp 4. The core components are all made of high and low temperature resistant and corrosion-resistant materials to ensure stable operation in extreme environments. The fixing plate 1 has a circular structure, and its surface is passivated to effectively resist condensation and trace amounts of corrosive gases that may be present inside the chamber. Four mounting holes 5 are evenly arranged along the circumference of the fixing plate 1, which is fixed to the top wall of the high and low temperature chamber with bolts. Fluororubber sealing gaskets are installed at the bolt-to-chamber wall connection to prevent leakage of temperature and humidity inside the chamber.

[0023] The lower end face of the fixing plate 1 is rotatably connected to the connecting rod 2 via a bearing at the center position. The connecting rod 2 is a hollow tube. A wire hole 6 is provided at the center position of the upper end face of the fixing plate 1. The wire hole 6 is connected to the inside of the connecting rod 2 to form a channel for the wire to pass through.

[0024] The end of the connecting rod 2 is fixedly connected to the rotating arm 3 by argon arc welding. The rotating arm 3 is a rectangular hollow structure. The front end of the rotating arm 3 in the length direction is an open end. The open end is detachably installed with a sealing plate 7 by bolts. A through groove 9 is opened at the bottom of the rotating arm 3 along the length direction.

[0025] A slide rod 10 is fixedly connected to the inside of the rotating arm 3 along its length. A slide sleeve 11 and multiple slide rings 13 are provided on the slide rod 10. The inner diameter of the slide sleeve 11 is adapted to the slide rod 10, and it can slide smoothly along the slide rod 10 without obvious radial wobble. Multiple slide rings 13 are evenly distributed on the side of the slide sleeve 11 near the connecting rod 2.

[0026] A connecting arm 12 is fixedly connected to the lower end of the sliding sleeve 11. The end of the connecting arm 12 extends outward through the through groove 9 at the bottom of the rotating arm 3 and is fixedly connected to the explosion-proof lamp 4 via an explosion-proof connector. Handles 8 are fixedly connected to opposite sides of the explosion-proof lamp 4. The handles 8 are cylindrical in shape and have anti-slip textures on the surface for easy gripping when wearing gloves.

[0027] The lower end of each slip ring 13 is integrally molded with a retaining ring 14. The retaining ring 14 is made of elastic plastic and has an overall C-shaped structure with an arc-shaped groove on the inner side. The radius of the groove is adapted to the electrical control wire, and a silicone pad is attached to the groove. The electrical control wire of the explosion-proof lamp 4 passes through the wire hole 6 of the fixing plate 1, the inside of the connecting rod 2, and the inside of the rotating arm 3 in sequence. It is fixed by the elastic clamping force of the retaining ring 14 and finally connected to the inlet end of the explosion-proof lamp 4 through the explosion-proof connector. This fixing method allows the electrical control wire to expand or retract synchronously when the explosion-proof lamp 4 moves. Excess cable is orderly collected inside the rotating arm 3 through the gap between the slip rings 13. It will not fall out of the through groove 9, nor will it cause knotting or tangling due to movement. At the same time, the silicone pad can prevent the retaining ring 14 from damaging the cable insulation layer due to excessive clamping force.

[0028] During installation, first fix the fixing plate 1 to the center of the top wall inside the walk-in high and low temperature chamber with bolts, ensuring that the connecting rod 2 is vertically downward; then pass the electrical control wire from the outside of the chamber through the wire hole 6 of the fixing plate 1, through the connecting rod 2 and the inside of the rotating arm 3 in sequence, fix it on the retaining ring 14 of the slip ring 13 and connect it to the explosion-proof light 4, and finally cover the sealing plate 7 at the front end of the rotating arm 3 to complete the overall installation.

[0029] When personnel enter the high and low temperature chamber and need to adjust the lighting position, if it is necessary to move the explosion-proof lamp 4 along the length of the rotating arm 3, they can hold the handles 8 on both sides of the explosion-proof lamp 4 and push or pull it in the target direction. The explosion-proof lamp 4 drives the sliding sleeve 11 to move away from the connecting rod 2 along the sliding rod 10 through the connecting arm 12. The sliding sleeve 11 pushes the slip ring 13 in front to move synchronously, and the electrical control line unfolds with the slip ring 13. When pulling, the sliding sleeve 11 moves closer to the connecting rod 2, and the slip ring 13 is reset under the traction of the electrical control line. The excess cable is stored inside the rotating arm 3. The whole process is without jamming or cable entanglement.

[0030] If you need to adjust the circumferential position of the explosion-proof light 4, you can hold the handle 8 and push the rotating arm 3 to rotate around the connecting rod 2: the connecting rod 2 drives the rotating arm 3 to rotate smoothly, with a rotation angle of 0°-360°. The electrical control wire rotates synchronously with the rotating arm 3. Since the cable is fixed by the retaining ring 14 and housed inside the rotating arm 3, it will not twist or be pulled. After rotating to the target direction, you can stop by releasing the handle 8.

[0031] By coordinating the circular rotation of the rotating arm 3 with the linear movement of the explosion-proof lamp 4 along the rotating arm 3, the explosion-proof lamp 4 can cover any point inside the high and low temperature chamber, meeting the lighting needs of personnel for different test areas.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A walk-in high and low temperature chamber lighting device, comprising a fixed plate (1), a connecting rod (2), a rotating arm (3), and an explosion-proof lamp (4), characterized in that, The lower end face of the fixed plate (1) is rotatably connected to a connecting rod (2) via a bearing. The connecting rod (2) is a hollow structure. A rotating arm (3) is fixedly connected to the end of the connecting rod (2). The rotating arm (3) is a rectangular hollow structure. The connecting rod (2) and the rotating arm (3) are connected internally. A sliding rod (10) is fixedly connected to the inside of the rotating arm (3) along its length. A sliding sleeve (11) and multiple sliding rings (13) are provided on the sliding rod (10). A connecting arm (12) is fixedly connected to the lower end of the sliding sleeve (11). The end of the connecting arm (12) extends through the through groove (9) to the outside of the rotating arm (3) and is fixedly installed with an explosion-proof lamp (4).

2. The walk-in high and low temperature chamber lighting device according to claim 1, characterized in that, The fixing plate (1) is a circular structure with four mounting holes (5) arranged in a ring on it. A wire hole (6) is provided in the center of the upper end face of the fixing plate (1). The wire hole (6) is connected to the inside of the connecting rod (2) to form a channel for the wire to pass through.

3. The walk-in high and low temperature chamber lighting device according to claim 1, characterized in that, The front end of the rotating arm (3) in the length direction is an open end, and a sealing plate (7) is detachably installed on the open end by bolts. A through groove (9) is opened at the bottom of the rotating arm (3) along the length direction.

4. The walk-in high and low temperature chamber lighting device according to claim 1, characterized in that, The slip rings (13) are all located on the side of the sliding sleeve (11) near the connecting rod (2), and the lower end of each slip ring (13) is fixedly connected with a retaining ring (14).

5. The walk-in high and low temperature chamber lighting device according to claim 4, characterized in that, The electrical control wire of the explosion-proof lamp (4) passes through the wire hole (6), the inside of the connecting rod (2), and the inside of the rotating arm (3) in sequence. The electrical control wire is fixed on multiple retaining rings (14) and finally connected to the explosion-proof lamp (4), so that the electrical control wire can be expanded or retracted synchronously when the explosion-proof lamp (4) moves.

6. The walk-in high and low temperature chamber lighting device according to claim 5, characterized in that, The retaining ring (14) is made of elastic plastic and has an arc-shaped groove on its inner side. A silicone pad is pasted in the groove, and the electrical control line is fixed by the elastic clamping force of the retaining ring (14).

7. The walk-in high and low temperature chamber lighting device according to claim 1, characterized in that, Handles (8) are fixedly connected to opposite sides of the explosion-proof lamp (4). The explosion-proof lamp (4) can be pulled by the handles (8), so that the sliding sleeve (11) moves along the sliding rod (10), thereby driving the explosion-proof lamp (4) to move back and forth along the length of the rotating arm (3).

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