Classroom eye protection lamp with adjustable luminosity

Abstract

The classroom eye protection lamp comprises a lamp body (10), a sling (11) and a fixing plate (12), and a clamping groove (21) is formed in the position, close to the upper end of the sling (11), of the sling (11) in the circumferential direction; a connecting cylinder (22) is fixed on the fixing plate (12), and a U-shaped clamping block (23) is arranged in the connecting cylinder (22) in a sliding mode in the radial direction of the connecting cylinder (22); the upper end of the sling (11) extends into the connecting cylinder (22), the U-shaped clamping block (23) slides and is clamped with the clamping groove (21), so that the lamp body (10) is installed on the fixing plate (12) through the sling (11), and when the lamp body (10) needs to be disassembled for detection and maintenance in the later period, only the U-shaped clamping block (23) slides reversely and is separated from the clamping groove (21), so that the sling (11) is separated from the fixing plate (12), the fixing plate (12) does not need to be disassembled from a wall, operation is convenient, and time and labor are saved. And infirm connection between the fixing plate (12) and the wall body caused by repeated disassembly is avoided, and falling of the lamp body (10) is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lamps, in particular to an eye-protecting lamp for classrooms with adjustable light intensity. Background Technique

[0002] With the progress of technology, people have gradually realized the problems of dazzling light, inappropriate color temperature, stroboscopic and glare existing in traditional classroom lighting equipment, which are likely to cause visual fatigue of students and an increase in the myopia rate. Therefore, the technology of eye-protecting lamps for classrooms has emerged. Most of them are DC eye-protecting lamps, which use DC ballasts. By converting alternating current into direct current with stable voltage and current first, and through means such as eliminating stroboscopic, reducing blue light, optimizing light distribution and color temperature adjustment, a uniform, soft, non-glare and natural light-like lighting environment is provided for students.

[0003] The Chinese utility model patent with the authorization announcement number CN219414660U discloses an eye-protecting lamp for classrooms with adjustable light intensity. According to the light intensity detected by the light detection sensor, the resistance connected to the lamp bead board circuit is changed to adjust the current and thus change the light intensity. However, its defect lies in that the lamp body is installed on the wall through a sling and a fixing plate. When it is necessary to disassemble the lamp body for inspection and maintenance in the later stage, the fixing plate needs to be removed from the wall, which is inconvenient to operate. Moreover, repeated disassembly is likely to cause the connection between the fixing plate and the wall to be unreliable, and there is a risk of the lamp body falling. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that the lamp body of the existing eye-protecting lamp for classrooms with adjustable light intensity is installed on the wall through a sling and a fixing plate. When it is necessary to disassemble the lamp body for inspection and maintenance in the later stage, the fixing plate needs to be removed from the wall, which is inconvenient to operate. Moreover, repeated disassembly is likely to cause the connection between the fixing plate and the wall to be unreliable, and there is a risk of the lamp body falling.

[0005] To solve the above problems, the utility model provides an eye-protecting lamp for classrooms with adjustable light intensity, which includes a lamp body, a sling and a fixing plate. The lower end of the sling is connected to the lamp body, and a clamping groove is circumferentially formed near the upper end of the sling; the fixing plate is fixed to the wall, and a connecting cylinder is fixed on the fixing plate. A U-shaped clamping block is slidably arranged along the radial direction inside the connecting cylinder. The upper end of the sling can extend into the connecting cylinder to make the U-shaped clamping block engage with the clamping groove.

[0006] The eye-protecting lamp for classrooms with adjustable light intensity provided by the utility model also has the following technical features:

[0007] A guide rod is fixed on the outer side of the U-shaped clamping block. A guide hole is formed along the radial direction on the connecting cylinder. The guide rod slides along the guide hole. The end of the guide rod passes through the guide hole and is fixed with a vertical rod. A long strip hole is formed on the vertical rod; a support seat is fixed outside the connecting cylinder. A swing rod is rotatably arranged on the support seat. A pin column is arranged at the end of the swing rod. The pin column is arranged in the long strip hole; the lower end of the long strip hole is arranged lower than the swing rod.

[0008] A compression spring is sleeved on the guide rod, one end of the compression spring is fixed to the connecting cylinder, and the other end of the compression spring is fixed to the vertical rod.

[0009] A drive rod is fixed to the end of the swing rod, and the drive rod is rotatably connected to the pin column.

[0010] The cross sections of the guide rod and the guide hole are square and are matched with each other.

[0011] A first rounded corner is formed on the outer side of the U-shaped clamping block, and a second rounded corner is formed on the opening side of the U-shaped clamping block.

[0012] A plurality of mounting holes are circumferentially spaced on the fixing plate.

[0013] The utility model has the following beneficial effects: the upper end of the sling is inserted into the connecting cylinder, so that the U-shaped clamping block slides and is clamped with the clamping groove, so as to install the lamp body on the fixing plate through the sling. When it is necessary to disassemble the lamp body for inspection and maintenance in the later stage, only the U-shaped clamping block needs to slide reversely and be separated from the clamping groove, so as to separate the sling from the fixing plate, without removing the fixing plate from the wall, which is convenient to operate, avoids the unreliable connection between the fixing plate and the wall caused by multiple disassembly, and avoids the lamp body from falling. Description of the Drawings

[0014] Figure 1 is an axonometric view of the utility model;

[0015] Figure 2 is Figure 1 a partial enlarged view of;

[0016] Figure 3 is Figure 2 the front view of;

[0017] Figure 4 is Figure 3 the motion state change diagram of. Detailed Embodiment

[0018] The utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0019] As Figures 1 to 4 shown, the classroom eye protection lamp with adjustable luminous intensity of the utility model includes a lamp body 10, a sling 11 and a fixing plate 12. The lower end of the sling 11 is connected to the lamp body 10, and a clamping groove 21 is circumferentially formed near the upper end of the sling 11; the fixing plate 12 is fixed to the wall, a connecting cylinder 22 is fixed on the fixing plate 12, a U-shaped clamping block 23 is slidably arranged along the radial direction in the connecting cylinder 22, and the upper end of the sling 11 can be inserted into the connecting cylinder 22 to make the U-shaped clamping block 23 clamped with the clamping groove 21.

[0020] Insert the upper end of the sling 11 into the connecting cylinder 22, slide the U-shaped clamping block 23 and engage it with the clamping groove 21, so as to install the lamp body 10 on the fixing plate 12 through the sling 11. When it is necessary to disassemble the lamp body 10 for inspection and maintenance later, only need to slide the U-shaped clamping block 23 reversely and disengage it from the clamping groove 21, so as to separate the sling 11 from the fixing plate 12, without having to remove the fixing plate 12 from the wall. The operation is convenient, avoiding the unreliable connection between the fixing plate 12 and the wall caused by multiple disassembly, and avoiding the lamp body 10 from falling.

[0021] Wherein, the thickness of the U-shaped clamping block 23 is less than and close to the height of the clamping groove 21.

[0022] Wherein, a cavity is formed in the lamp body 10, and an opening is provided on the lower side. A lamp bead board is arranged in the cavity. A light detection sensor is also arranged on the lower side of the lamp body 10. A control module, a power supply module, an adjustable resistor and corresponding connection circuits are also arranged on the lamp body 10 to achieve the purpose of adjusting the light intensity. The specific structures are all prior arts and will not be elaborated here.

[0023] Wherein, two groups of slings 11 and fixing plates 12 are symmetrically arranged with respect to the lamp body 10. Of course, more can also be selected to enhance the connection stability of the lamp body 10. Wires can be routed in one of the slings 11.

[0024] Preferably, referring to Figure 2 、 3 , a guide rod 24 is fixed on the outer side of the U-shaped clamping block 23. A guide hole 25 is radially opened on the connecting cylinder 22. The guide rod 24 slides along the guide hole 25. The end of the guide rod 24 passes through the guide hole 25 and is fixed with a vertical rod 26. A long strip hole 27 is opened on the vertical rod 26; A support seat 28 is fixed outside the connecting cylinder 22. A swing rod 29 is rotatably arranged on the support seat 28. A pin column 30 is arranged at the end of the swing rod 29. The pin column 30 is arranged in the long strip hole 27; The lower end of the long strip hole 27 is lower than the swing rod 29.

[0025] Control the swing of the swing rod 29. Through the pin column 30 and the long strip hole 27, push the vertical rod 26 to drive the guide rod 24 to slide into the connecting cylinder 22 along the guide hole 25, drive the U-shaped clamping block 23 to slide and engage with the clamping groove 21, so as to install the lamp body 10 on the fixing plate 12 through the sling 11; When the pin column 30 moves from the upper end of the long strip hole 27 to its lowermost end, the end of the swing rod 29 swings from upward inclination to downward inclination, and a triangular stable structure is formed. Without external force, the positions of the guide rod 24 and the U-shaped clamping block 23 will not change, and the structure is more stable.

[0026] Wherein, the upper end of the long strip hole 27 is open.

[0027] Wherein, two swing rods 29 are symmetrically arranged with respect to the guide rod 24. A pin column 30 is commonly arranged at the ends of the two swing rods 29 to enhance the connection stability.

[0028] Among them, one side of the U-shaped clamping block 23 is open. When it is clamped with the clamping groove 21, the U-shaped clamping block 23 can push the outer surface of the sling 11 into contact with the inner wall of the connecting cylinder 22 to limit the sling 11; preferably, the cross-section of the U-shaped clamping block 23 is square, and the cross-section of the remaining part of the sling 11 after the clamping groove 21 is opened is square to limit the sling 11 from rotating around its axis.

[0029] Among them, those skilled in the art can select and set the sizes of relevant components according to actual applications. For example, by selecting and setting the lengths and relative positions of the swing rod 29, the vertical rod 26, the long strip hole 27, as well as the length of the guide rod 24, the thickness and diameter of the connecting cylinder 22, etc., when the end of the swing rod 29 swings from upward inclination to downward inclination and forms a triangular stable structure, the sliding distance of the guide rod 24 along the guide hole 25 can enable the U-shaped clamping block 23 to be clamped into the clamping groove 21.

[0030] Preferably, a compression spring 31 is sleeved on the guide rod 24. One end of the compression spring 31 is fixed to the connecting cylinder 22, and the other end of the compression spring 31 is fixed to the vertical rod 26.

[0031] When the pin 30 is located at the upper end of the long strip hole 27, under the action of the compression spring 31, the outer side of the U-shaped clamping block 23 contacts the inner wall of the connecting cylinder 22. When the pin 30 is located at the lower end of the long strip hole 27, under the action of the compression spring 31, the long strip hole 27 on the vertical rod 26 fits the outer surface of the pin 30 to form a triangular stable structure, avoiding unstable connection due to shaking.

[0032] Preferably, a driving rod 32 is fixed to the end of the swing rod 29, and the driving rod 32 is rotatably connected to the pin 30.

[0033] Pulling the driving rod 32 downward can drive the end of the swing rod 29 to swing downward, so that the U-shaped clamping block 23 is clamped with the clamping groove 21; pushing the driving rod 32 upward can drive the end of the swing rod 29 to swing upward, so that the U-shaped clamping block 23 is disengaged from the clamping groove 21; the rotating pin 30 is provided to reduce the friction between it and the long strip hole 27, making the operation more labor-saving.

[0034] Preferably, the cross-sections of the guide rod 24 and the guide hole 25 are square and cooperate with each other to prevent the guide rod 24 from rotating along the guide hole 25, thereby restricting the U-shaped clamping block 23 to only move radially along the connecting cylinder 22.

[0035] Preferably, a first rounded corner 33 is provided on the outer side of the U-shaped clamping block 23, and a second rounded corner 34 is provided on the opening side of the U-shaped clamping block 23.

[0036] Preferably, a plurality of mounting holes 13 are circumferentially spaced apart on the fixing plate 12.

[0037] The working principle of the present utility model is as follows:

[0038] During installation, insert the upper end of the sling 11 into the connecting cylinder 22. Pull the driving rod 32 downward, which can drive the end of the swing rod 29 to swing downward. Through the pin 30 and the long slot 27, push the vertical rod 26 to drive the guide rod 24 to slide into the connecting cylinder 22 along the guide hole 25, so that the U-shaped block 23 is engaged with the card slot 21, and the lamp body 10 is installed on the fixing plate 12 through the sling 11, as Figure 4 shown;

[0039] When it is necessary to disassemble the lamp body 10 for inspection and maintenance in the later stage, push the driving rod 32 upward, which can drive the end of the swing rod 29 to swing upward. Through the pin 30 and the long slot 27, pull the vertical rod 26 to drive the guide rod 24 to slide out of the connecting cylinder 22 along the guide hole 25, so that the U-shaped block 23 is disengaged from the card slot 21, and the sling 11 is separated from the fixing plate 12, as Figure 3 shown, without having to remove the fixing plate 12 from the wall. The operation is convenient, avoiding the insecure connection between the fixing plate 12 and the wall caused by multiple disassembly, and avoiding the lamp body 10 from falling.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the present utility model in each embodiment.

Claims

1. A classroom eye protection lamp with adjustable brightness, comprising a lamp body (10), a sling (11) and a fixing plate (12), characterized in that: The lower end of the sling (11) is connected to the lamp body (10), and a clamping groove (21) is provided in the circumferential direction of the sling (11) near the upper end thereof; the fixing plate (12) is fixed to the wall, a connecting tube (22) is fixed to the fixing plate (12), a U-shaped clamping block (23) is provided in the connecting tube (22) for radial sliding, and the upper end of the sling (11) can extend into the connecting tube (22) so that the U-shaped clamping block (23) is clamped with the clamping groove (21).

2. The classroom eye protection lamp with adjustable brightness according to claim 1 is characterized in that: A guide rod (24) is fixed to the outside of the U-shaped block (23); a guide hole (25) is provided on the connecting tube (22) along its radial direction; the guide rod (24) slides along the guide hole (25); the end of the guide rod (24) passes through the guide hole (25) and is fixed with a vertical rod (26); a long hole (27) is provided on the vertical rod (26); a support seat (28) is fixed to the outside of the connecting tube (22); a swing rod (29) is rotatably provided on the support seat (28); a pin (30) is provided at the end of the swing rod (29); the pin (30) is arranged in the long hole (27); the lower end of the long hole (27) is arranged below the swing rod (29).

3. The classroom eye protection lamp with adjustable brightness according to claim 2, characterized in that: A compression spring (31) is sleeved on the guide rod (24), one end of the compression spring (31) is fixed to the connecting tube (22), and the other end of the compression spring (31) is fixed to the vertical rod (26).

4. The classroom eye protection lamp with adjustable brightness according to claim 2, characterized in that: A driving rod (32) is fixed to the end of the swing rod (29), and the driving rod (32) is rotatably connected to the pin (30).

5. The classroom eye protection lamp with adjustable brightness according to claim 2, characterized in that: The cross-sections of the guide rod (24) and the guide hole (25) are mutually matching squares.

6. The classroom eye protection lamp with adjustable brightness according to claim 1, characterized in that: The outer side of the U-shaped clamping block (23) is provided with a first rounded corner (33), and the opening side of the U-shaped clamping block (23) is provided with a second rounded corner (34).

7. The classroom eye protection lamp with adjustable brightness according to claim 1, characterized in that: A plurality of mounting holes (13) are provided at intervals in the circumferential direction on the fixing plate (12).

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