Defogging device for light-emitting lens of stage lamp
By incorporating a circulating air duct and oil-absorbing cotton, the problem of oil residue left during the stage light defogging process is solved, achieving efficient defogging without affecting the light output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU DASEN LIGHTING ELECTRONICS
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-24
AI Technical Summary
Existing stage lighting defogging technology, which uses a fan to directly blow air onto the light-emitting lens, easily leaves radioactive oil stains, affecting the light output effect.
A circulating air duct is designed to form an air circulation through a fan, air guides, and baffles. Combined with oil-absorbing cotton and oil-filtering cotton, it prevents the airflow from blowing directly onto the light-emitting lens and absorbs oil stains to prevent oil stains from forming.
It effectively removes water mist from the light-emitting lens, while preventing the formation of radioactive oil stains, ensuring the light output effect of the lamp.
Smart Images
Figure CN224162558U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stage lighting technology, and more specifically, to a defogging device for the light-emitting lens of stage lighting fixtures. Background Technology
[0002] During the use of stage lights, the light-emitting lens of the lamp head will condense water mist or misty oil stains on its lower surface due to the temperature difference between the inside and outside and the vaporization of the lubricating oil inside the lamp, which will affect the light output effect of the lamp.
[0003] Existing stage lighting defogging technology mostly uses a fan to directly blow air onto the light-emitting lens. While this method can achieve defogging to some extent, it has a significant drawback: when the fan blows directly onto the light-emitting lens, it easily leaves radioactive oil stains on the lens, which negatively affects the light emission effect. Summary of the Invention
[0004] The present invention aims to provide a defogging device for the light-emitting lens of stage lighting fixtures, which can effectively remove water mist from the light-emitting lens and also effectively prevent the formation of radioactive oil stains on the light-emitting lens.
[0005] A defogging device for light-emitting lenses of stage lighting fixtures, comprising:
[0006] The outer shell is used to form a cavity, and its light-emitting end is provided with a light-emitting window that contacts the outside;
[0007] The light-emitting lens, located between the light-emitting window and the retaining ring, is used to transmit light.
[0008] The partition is parallel to the light-emitting lens and has a through hole in the middle for fixing the lens to prevent air from entering. There are air outlet and air inlet on both sides of the through hole.
[0009] Air outlet device, including fan and air guide;
[0010] The light-emitting lens, partition, fixed lens and air outlet device are combined to form a circulating air duct. The air in the cavity enters the circulating air duct through the fan, air guide and air inlet in sequence, and then flows out of the circulating air duct through the air outlet.
[0011] It also includes a baffle plate located between the light-emitting lens and the partition, used to block air from entering through the air inlet and blowing directly onto the light-emitting lens.
[0012] As a further improvement of this utility model, the light-emitting lens, the partition and the fixed lens form a cavity two, and the circulating air duct is located inside the cavity two.
[0013] As a further improvement of this utility model, the flow guide baffle is installed on the partition plate and is offset from the air inlet hole.
[0014] As a further improvement of this utility model, the flow guide baffle is fan-shaped, and the projection of the flow guide baffle in the direction of the partition falls within the area of the partition.
[0015] As a further improvement of this utility model, the lower surface of the flow guide baffle is provided with oil-absorbing cotton, which is compatible with the flow guide baffle.
[0016] As a further improvement of this utility model, the oil-absorbing cotton is fan-shaped, and the inner arc surface of the oil-absorbing cotton is in close contact with the side of the light-emitting lens.
[0017] As a further improvement of this utility model, the air guide is located between the fan and the partition, and the air outlet of the air guide is embedded and aligned with the air inlet of the partition.
[0018] As a further improvement of this utility model, the air outlet device also includes an oil filter cotton located at the air inlet of the fan, with the oil filter cotton covering the air inlet.
[0019] As a further improvement of this utility model, a shock-absorbing ring is also provided between the partition and the pressure ring, and the shock-absorbing ring is in close contact with the pressure ring and the partition respectively.
[0020] As a further improvement of this utility model, a waterproof rubber ring is provided between the light-emitting lens and the housing for waterproofing.
[0021] As a further improvement of this utility model, the cavity also includes a support plate for mounting and fixing the lens, and the partition is mounted on the support plate.
[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0023] (1) In this technical solution, the light-emitting lens, the partition, the fixed lens and the air outlet device are combined to form a circulating air duct. When the air enters the circulating air duct and flows in the air duct, it can efficiently remove the water mist on the light-emitting lens.
[0024] (2) The baffle and oil-absorbing cotton installed inside the cavity can effectively block the airflow that blows directly to the light-emitting lens through the air inlet and can absorb the oil mist in the airflow entering the cavity. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the circulating air duct of this utility model.
[0026] Figure 2 This is a cross-sectional perspective view of the present invention.
[0027] Figure 3 This is an exploded perspective view of the present invention.
[0028] In the diagram: 100-Outer shell; 101-Light emission window; 10-Cavity 1; 1-Light emission lens; 2-Pressure ring; 3-Baffle; 31-Air outlet; 32-Air inlet; 4-Air outlet device; 41-Air guide; 411-Air outlet; 42-Fan; 421-Air inlet; 422-Oil filter cotton; 5-Fixed lens; 6-Cavity 2; 61-Baffle; 62-Oil absorbent cotton; 7-Shock absorber ring; 8-Waterproof rubber ring; 9-Support plate. Detailed Implementation
[0029] Combined with appendix Figure 1 A defogging device for a light-emitting lens of a stage lighting fixture includes a housing 100 forming a cavity 10, with a light-emitting window 101 at its light-emitting end that contacts the outside. A light-emitting lens 1 for transmitting light is located inside the cavity 10 and installed at the light-emitting window 101 at the light-emitting end of the housing 100. The light-emitting lens 1 is fixed to the housing 100 by a pressure ring 2, i.e., the light-emitting lens 1 is located between the light-emitting window 101 and the pressure ring 2. The pressure ring 2 is a stepped ring and is adapted to the light-emitting lens 1. The light-emitting lens 1 contacts the outside through the light-emitting window 101. Since the internal temperature of the lighting fixture is higher than that of the outside during operation, the temperature difference between the outside and the inside of the lighting fixture can easily affect the light-emitting lens 1, which contacts both the inside and outside of the lighting fixture at the same time.
[0030] The partition 3 is a flat plate parallel to the light-emitting lens 1, with a through hole in the middle for fixing the lens 5 to prevent air leakage. Air outlet 31 and air inlet 32 are respectively provided on both sides of the through hole. Both the air inlet 32 and the air outlet 31 are rectangular, and the area of the air inlet 32 is larger than the area of the air outlet 31. The air outlet device 4 includes a fan 42 located below the partition 3 and a guide 41 connecting the fan 42 and the circulating air duct. The pressure ring 2, the partition 3, the air outlet device 4 and the fixed lens 5 are all located inside the cavity 10.
[0031] The light-emitting lens 1, the partition 3, the fixed lens 5 and the air outlet device 4 together form a circulating air duct. The air in the cavity 10 enters the circulating air duct through the fan 42, the air guide 41 and the air inlet 32 in sequence, and then flows out of the circulating air duct through the air outlet 31. The air flowing through the circulating air duct can effectively remove the water mist that condenses on the lower surface of the light-emitting lens 1 due to the temperature difference.
[0032] The airflow path in the circulating air duct is as follows: the air below the partition 3 inside the cavity 10 enters the fan 42 and is blown into the air guide 41 by the fan 42. The air entering the air guide 41 is guided to the air inlet 32 of the partition 3. After passing through the air inlet 32 on one side of the fixed lens 5, the air flows from the gap between the light-emitting lens 1, the partition 3 and the fixed lens 5 to the air outlet 31 on the other side of the fixed lens 5.
[0033] The circulating air duct is also equipped with a baffle 61 located between the light-emitting lens 1 and the partition 3. The baffle 61 is used to block the air that enters from the air inlet 32 and blows directly onto the lower surface of the light-emitting lens 1, which can effectively prevent radioactive oil stains from appearing on the light-emitting lens 1.
[0034] The beneficial effect of this embodiment is that the airflow in the circulating air duct can effectively remove water mist from the light-emitting lens 1, while the baffle 61 located in the circulating air duct can also prevent radioactive oil stains from appearing on the light-emitting lens 1.
[0035] As a new implementation method, combined with the appendix Figure 1 The light-emitting lens 1, the partition 3, and the fixed lens 5 form a cavity 2 6, with a circulating air duct located inside cavity 2 6. Cavity 2 6 is a sealed cavity located at the top of cavity 10. As is common knowledge in the art, when the lamp is running, the temperature inside cavity 10 is high, and the lubricating oil on the components installed in cavity 10 easily vaporizes and enters the air inside cavity 10. If cavity 2 6 is not a sealed cavity located inside cavity 10, the air containing vaporized lubricating oil in cavity 10 will mix with the air in cavity 2 6, and the vaporized lubricating oil will adhere to the surfaces of the light-emitting lens 1 and the fixed lens 5 along with the mixed air, thus easily forming oil stains. However, in this embodiment, the air in cavity 10 can only enter cavity 2 6 along the direction of the circulating air duct, so the air in cavity 10 and the air in cavity 2 6 will not mix. Furthermore, after the air in cavity 10 enters cavity 2 6 through the air duct, the content of vaporized grease in the air is significantly reduced. The beneficial effect of this embodiment is that it can ensure that the content of vaporized lubricating oil in the air entering the cavity 2 6 is low. Therefore, the air entering the cavity 2 6 can effectively remove fog from the light-emitting lens 1 without contaminating the light-emitting lens 1 and the fixed lens 5.
[0036] As a new implementation method, combined with the appendix Figure 1 and attached Figure 2A baffle 61 is installed on the partition 3, and the baffle 61 is offset from the air inlet 32. The lower surface of the baffle 61 is higher than the light-emitting surface of the fixed lens 5. Due to the high temperature inside the lamp, the lubricating oil inside the lamp will vaporize. If the air outlet device blows directly onto the light-emitting lens 1, radial oil stains will appear on the light-emitting lens 1 after a period of use. Therefore, in this embodiment, a baffle 61 is provided above the air inlet 32. The air outlet device 4 blows the air in the cavity 10 directly onto the baffle 61, and the air outlet device 61 bounces back into the cavity 2 6. The baffle 61 can block the vaporized grease in the air entering from the air inlet 32. There is a certain gap between the baffle 61 and the air inlet 32 of the partition 3. This gap can ensure that the air blown out by the air outlet device 4 can smoothly enter the cavity 2 6. The beneficial effect of this embodiment is that the baffle plate 61 is biased towards the air inlet 32, which can effectively prevent radial oil stains from appearing on the light-emitting lens 1 while achieving the defogging effect of the light-emitting lens 1.
[0037] As a new implementation method, combined with the appendix Figure 3 The baffle 61 is fan-shaped, and the light-emitting surface of the fixed lens 5 is circular. The baffle 61 is adapted to the fixed lens 5. The projection of the baffle 61 in the direction of the partition 3 falls within the area of the partition 3. The baffle 61 does not block the light-emitting surface of the fixed lens 5, and the projection of the baffle 61 in the direction of the partition 3 completely covers the air outlet 411. The inner arc surface of the baffle 61 coincides with the outer periphery of the fixed lens 5 in the direction of the partition, so that the air blown out by the air outlet device 4 can be completely blocked by the baffle 61. Then, the air flowing through the baffle 61 enters the cavity 6 through the gaps in the other three directions between the baffle 61 and the partition 3. The beneficial effect of this embodiment is that the baffle 61 does not affect the normal light output of the lamp, and it can also prevent air from blowing directly onto the light-emitting lens 1 from the gap between the inner arc surface of the baffle 61 and the side of the fixed lens 5, thus avoiding the formation of radioactive oil stains on the light-emitting lens 1.
[0038] As a new implementation method, combined with the appendix Figure 3The lower surface of the baffle 61 is provided with oil-absorbing cotton 62, which is adapted to fit the baffle 61. The lower surface of the baffle 61 has two mounting posts for installation, and the baffle 61 is mounted on the partition 3 via these posts. The oil-absorbing cotton 62 has through holes to allow the mounting posts to pass through, and its upper surface is adhered to the lower surface of the baffle 61. The inner arc surface of the baffle 61 and the inner arc surface of the oil-absorbing cotton 62 are located on the same curved surface, so the baffle 61 does not obstruct the fixed lens 5. In this embodiment, the dimensions of the baffle 61, the oil-absorbing cotton 62, and the air outlet 41 are... Size matching: When the dimensions of the baffle 61 and the oil-absorbing cotton 62 are too large, the gap between the oil-absorbing cotton 62 and the partition 3 will decrease, making it difficult for the air blown out by the fan 42 to enter the cavity 6. When the dimensions of the baffle 61 and the oil-absorbing cotton 62 are too small, the projection of the oil-absorbing cotton 62 in the direction of the partition 3 cannot completely cover the air outlet 411 of the air guide, causing the air passing through the air outlet 411 to blow directly onto the light-emitting lens 1, forming radial oil stains on the light-emitting lens 1. The beneficial effect of this embodiment is that it can allow air to enter the cavity 6 smoothly, and can also effectively avoid the situation where the air is blown directly onto the light-emitting lens 1, causing the light-emitting lens 1 to generate radial oil stains.
[0039] As a new implementation method, combined with the appendix Figure 3 The oil-absorbing cotton 62 is fan-shaped, while the light-emitting surface of the fixed lens 5 is circular. The fan-shaped oil-absorbing cotton 62 fits the fixed lens 5 more closely. The projection of the oil-absorbing cotton 62 in the direction of the partition 3 completely covers the air outlet 411. The inner arc surface of the oil-absorbing cotton 62 is in close contact with the side of the fixed lens 5, allowing the air blown out by the air outlet device 4 to flow fully through the oil-absorbing cotton 62. Then, the air flowing through the oil-absorbing cotton 62 enters the cavity 6 through the gaps in the other three directions between the oil-absorbing cotton 62 and the partition 3. During the process of the air flowing through the oil-absorbing cotton 62, a large amount of vaporized grease in the air entering the cavity 6 is absorbed. The beneficial effect of this embodiment is that the inner arc surface of the oil-absorbing cotton 62 is in close contact with the side of the fixed lens 5, which can prevent air with a very high vaporized grease content from being blown directly onto the light-emitting lens 1 through the gap between the inner arc surface of the oil-absorbing cotton 62 and the side of the fixed lens 5, thus avoiding the formation of radioactive oil stains on the light-emitting lens 1.
[0040] As a new implementation method, combined with the appendix Figure 2The air outlet device 4 is located below the partition 3 and is vertically installed inside the cavity 10. Its air guide 41 is inclined towards the fixed lens 5. The air guide 41 is located between the fan 42 and the partition 3. The air outlet 411 of the air guide is embedded and aligned with the air inlet 32 of the partition 3. The air outlet 411 and the upper surface of the partition 3 are close to the same plane. A part of the air guide 41 is located in the air inlet 32 of the partition 3. The projection of the oil-absorbing cotton 62 in the direction of the partition 3 can cover the air outlet 411. Therefore, the air blown out from the air outlet 411 can be blocked by the oil-absorbing cotton 62, which can effectively absorb the vaporized grease in the air. The beneficial effect of this embodiment is that the air blown out from the fan 42 can completely enter the cavity 6, and the rapid airflow can fully remove the water mist on the optical lens 1.
[0041] As a new implementation method, combined with the appendix Figure 2 and attached Figure 3 The air outlet device 4 also includes an oil filter cotton 422 located at the air inlet 421 of the fan, which covers the air inlet 421. The fan 42 is installed in the middle of the cavity 10. As those skilled in the art will understand, the middle of the cavity 10 is usually used to install other effect disc components; the effect disc components are close to the light source, so the temperature is high; and the lubricating oil on the effect disc components is easy to vaporize, and the vaporized lubricating oil will enter the fan 42 adjacent to the effect disc components with the air flow; if the fan 42 blows air with a high grease content directly into the cavity 6, grease will quickly accumulate on the oil absorbent cotton 62 and become saturated and difficult to continue using; after a period of use, radioactive oil stains will still appear on the light-emitting lens 1. The beneficial effect of this embodiment is that by setting two oil filter cottons at the air inlet of the fan, a portion of the vaporized grease in the air entering the fan 42 can be effectively filtered.
[0042] As a new implementation method, combined with the appendix Figure 1 and attached Figure 3A shock-absorbing ring 7 is also provided between the partition 3 and the pressure ring 2, and the shock-absorbing ring 7 is in close contact with the pressure ring 2 and the partition 3. The shock absorber 7 is a circular flat plate. The outer diameter of the shock absorber 7 is the same as the outer diameter of the pressure ring 2, and the inner diameter of the shock absorber 7 is smaller than the outer diameter of the partition 3. The lower surface of the shock absorber 7 is in close contact with the upper surface of the partition 3, forming a sealed cavity 2 6. When the shock absorber 7 is in close contact with the partition 3, it will not block the air inlet 32 and air outlet 31 on the partition 3. In this embodiment, the material of the shock absorber 7 is EVA cotton, which can make the cavity 2 6 formed by the partition 3, the light-emitting lens 1, the outer shell 100 and the fixed lens 5 more airtight. It should be noted that those skilled in the art should understand that the assembly design of the internal components of the cavity 10 should follow the principle of fit tolerance and reserve reasonable assembly gaps. However, in actual situations, if there is no reserved fit tolerance or insufficient fit tolerance, the shock absorber 7 can produce a deformation compensation effect due to its elastic deformation characteristics. Furthermore, stage lights inevitably vibrate during operation, and the shock absorber 7 can effectively reduce the shaking of the light-emitting lens 1. The beneficial effect of this embodiment is that the shock-absorbing ring 7 can prevent air in the cavity 2 6 from flowing out from the gap between the pressure ring 2 and the partition 3; it can also undergo elastic deformation, which can not only prevent the light-emitting lens 1 from shaking, but also compensate for the assembly of the pressure ring 2 and the partition 3.
[0043] As a new implementation method, combined with the appendix Figure 1 A waterproof gasket 8 is provided between the light-emitting lens 1 and the housing 100 for waterproofing. The light-emitting end of the housing 100 has a groove for mounting the waterproof gasket 8, and the thickness of the waterproof gasket 8 is greater than the depth of the groove. The upper surface of the light-emitting lens 1 is in close contact with the waterproof gasket 8, and the outer diameter of the waterproof gasket 8 is approximately the same as the outer diameter of the light-emitting lens 1. The light-emitting lens 1 and the waterproof gasket 8 are coaxially mounted. The beneficial effect of this embodiment is that it can effectively prevent external moisture from entering the cavity 10 and effectively avoid condensation on the light-emitting lens 1.
[0044] As a new implementation method, combined with the appendix Figure 3 The cavity 10 also includes a support plate 9 for mounting and fixing the lens 5, and a partition 3 is mounted on the support plate 9. The support plate 9 is a rectangular flat plate with a mounting hole for mounting and fixing the lens 5 in the middle. Multiple support columns for mounting the partition 3 are evenly distributed around the mounting hole. The air guide 41 is adjacent to the support plate 9 and is inclined towards the support plate 9. The support plate 9 is connected to the bottom of the outer shell 100 through other sheet metal, that is, the partition 3 is connected to the bottom of the outer shell 100 through the support plate 9. The beneficial effect of this embodiment is that the partition 3 is mounted on the support plate 9 and the air outlet device 4 is mounted below the partition 3, which allows the air guide 41 of the air outlet device 4 to be more accurately aligned with the air inlet 32 on the partition 3.
[0045] The working principle of this technical solution is explained in the attached document. Figure 1The airflow diagram shown by the arrow in the diagram is as follows: Air in cavity 10 is drawn in by fan 42 and blown into baffle 61 in cavity 2 through air guide 41 and air inlet 32; oil absorbent cotton 62 on baffle 61 filters oil in the airflow and bounces the airflow; under the continuous drive of fan 42, the airflow entering from air inlet 32 forms a circulating airflow in cavity 26 and carries away water mist from the inner surface of the optical lens 1, and finally flows out of cavity 26 from air outlet 31 and returns to cavity 10.
Claims
1. A defogging device for light-emitting lenses of stage lighting fixtures, characterized in that, include: The outer shell is used to form a cavity, and its light-emitting end is provided with a light-emitting window that contacts the outside; The light-emitting lens, located between the light-emitting window and the retaining ring, is used to transmit light. The partition is parallel to the light-emitting lens and has a through hole in the middle for fixing the lens to prevent air from entering. There are air outlet and air inlet on both sides of the through hole. Air outlet device, including fan and air guide; The light-emitting lens, partition, fixed lens and air outlet device are combined to form a circulating air duct. The air in the cavity enters the circulating air duct through the fan, air guide and air inlet in sequence, and then leaves the circulating air duct through the air outlet. A deflector is located between the light-emitting lens and the partition, so that the airflow blown in from the air inlet does not blow directly onto the light-emitting lens.
2. A defogging device for a stage lighting lens according to claim 1, characterized in that, The light-emitting lens, the partition, and the fixed lens form a cavity two, and the circulating air duct is located inside the cavity two.
3. A defogging device for a stage lighting lens according to claim 1, characterized in that, The flow guide baffle is installed on the partition, and the flow guide baffle is offset towards the air inlet.
4. A defogging device for a stage lighting lens according to claim 3, characterized in that, The flow guide baffle is fan-shaped, and the projection of the flow guide baffle in the direction of the partition falls within the area of the partition.
5. A defogging device for a stage lighting lens according to claim 3, characterized in that, The lower surface of the flow guide baffle is provided with oil-absorbing cotton, which is adapted to the flow guide baffle.
6. A defogging device for a stage lighting lens according to claim 5, characterized in that, The oil-absorbing cotton is fan-shaped, and its inner arc surface is in close contact with the side of the fixed lens.
7. A defogging device for a stage lighting lens according to claim 1, characterized in that, The air guide is located between the fan and the partition, and the air outlet of the air guide is embedded and aligned with the air inlet of the partition.
8. A defogging device for a stage lighting lens according to claim 7, characterized in that, The air outlet device also includes an oil filter cotton located at the air inlet of the fan, which covers the air inlet.
9. A defogging device for a stage lighting lens according to claim 1, characterized in that, A shock-absorbing ring is also provided between the partition and the pressure ring, and the shock-absorbing ring is in close contact with the pressure ring and the partition respectively.
10. A defogging device for a stage lighting lens according to claim 1, characterized in that, The cavity also includes a support plate for mounting and fixing the lens, and the partition is mounted on the support plate.