Oil and water mist prevention device for lens, and stage lamp comprising same

Abstract

An oil and water mist prevention device for a lens. The oil and water mist prevention device comprises an optical lens (10) and a layered heat insulation assembly (20), wherein the layered heat insulation assembly (20) comprises a layered heat insulation disk (21) and a plurality of sheets of heat insulation glass (22), the sheets of heat insulation glass (22) being fixed inside the layered heat insulation disc (21) in a layered and spaced-apart arrangement in the direction of light emission; and the optical lens (10) is disposed in front of the sheets of heat insulation glass (22), such that a light beam from a lamp reaches the optical lens (10) after sequentially passing through a plurality of stages of separate heat insulation temperature zones. Compared with the prior art, by means of a method for achieving thermal equilibrium and reducing the temperature difference on the inner and outer sides of the lens, and by designing multiple layers of heat insulation zones as needed to achieve step-by-step cooling, the natural formation and accumulation of oil stains and water mist in the lamp are fundamentally prevented. Moreover, there is no need to frequently and periodically purge gas from the lamp, thereby saving on maintenance costs of the stage lamp. In addition, the costs of lamp fittings are saved, and the internal structure of the stage lamp can be made more compact, lightweight and miniaturized.

Description

Lens anti-oil mist device and stage light thereof Technical Field

[0001] The present invention relates to the field of stage lighting, and in particular to a lens anti-oil mist device and a stage lamp comprising the lens anti-oil mist device. Background Art

[0002] With the rapid development of modern cultural tourism, the use of stage lights is becoming increasingly widespread. They are no longer limited to indoor performances, but are also widely used in outdoor live performances, theme parks, urban lighting projects, landscape lighting, and outdoor cultural venues. When stage lighting is used outdoors or in relatively humid environments, waterproof performance is required for stage lights. Therefore, fully sealed waterproof stage lights are often used outdoors.

[0003] When waterproof stage lights are used outdoors, there may be a temperature difference between the inside of the lamp head and the outside temperature, or the power failure of the lamp body in a high-temperature state will cause a temperature difference between the inside and outside of the lamp; with the increase of service life, the lubricating grease of various mechanical structures inside the lamp will naturally vaporize. Since the interior of the lamp is in a fully sealed state, oil vapor and water vapor will condense inside the lamp, which is likely to condense on the optical glass inside the optical lens (i.e. the light outlet) of the lamp body, with fine water droplets or mist-like oil vapor and water vapor, or form a mist-like halo, which seriously affects the light output effect of the lamp.

[0004] Currently, air circulation is the main approach to solving this problem. One approach is to make the lamp a fully sealed structure, whereby gas is circulated and filtered inside the lamp to prevent the accumulation of oil and mist. This approach is relatively effective in the short term, but oil and water vapor continue to circulate inside the lamp, which can affect the lens's light output over time. Another approach is to create air inlets and outlets on the lamp, using a blower mechanism to drive the exchange of airflow inside the lamp with the outside air, achieving internal and external circulation of gas and thus regularly discharging oil and water vapor.

[0005] While both methods can effectively address the problem of oily water mist accumulation, they essentially prevent it from adhering to the lens by driving airflow within the lamp. This does not address the source of the oil and water mist. This means the lamp needs to be regularly cleaned, which is time-consuming and labor-intensive, yet cannot prevent the continued generation of new oily water mist. Furthermore, the use of air circulation requires the lamp to be equipped with a corresponding blower, air guide, and airflow circuit, and the structure must fully consider the air flow within the lamp. This means the cost of lamp accessories will increase, and the lamp's internal structure is relatively complex, making the lamp heavy and difficult to achieve a compact structure.

[0006] Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, one of the purposes of the present invention is to provide a lens anti-oil mist device, and the second purpose is to provide a stage lamp including such a lens anti-oil mist device, which can solve the problem of oil and water mist easily condensing on the front optical lens of the stage lamp.

[0008] The present invention is achieved through the following technical solutions:

[0009] A lens oil mist prevention device comprises: an optical lens; a layered insulation assembly arranged below the optical lens, comprising: a layered insulation disk and a plurality of insulation glasses; the insulation glasses are fixed in the layered insulation disk in a layered and spaced arrangement in the light emitting direction, so that a plurality of levels of insulation temperature zones are formed in the layered insulation disk; each of the insulation temperature zones is a mutually independent chamber, or different insulation temperature zones are interconnected chambers; the optical lens is fixedly connected to the layered insulation disk, or the optical lens is sealed and fixed in the layered insulation disk; the optical lens is placed in the front end direction of the insulation glass, so that the light beam of the lamp reaches the optical lens after passing through a plurality of levels of insulation temperature zones in sequence.

[0010] Furthermore, the layered insulation tray is a hollow cylindrical structure; when the number of the insulating glasses is at least two, the layered insulation assembly also includes: a glass spacer gasket; the glass spacer gasket is fixed in the layered insulation tray, and the top and bottom of the glass spacer gasket are respectively in contact with the insulating glasses to form insulating temperature zones between the different insulating glasses.

[0011] Furthermore, the layered insulation tray is a trumpet-shaped structure that is wide at the top and narrow at the bottom; several layers of installation steps for placing the insulating glass are provided on the inner wall of the layered insulation tray; when the number of the insulating glass is at least two, the insulating glass is arranged on different installation steps to form insulating temperature zones between the different insulating glasses.

[0012] Furthermore, when the optical lens is fixedly connected to the layered insulation disk, the lens oil mist prevention device also includes: a lens mounting part and an insulation component support rod; the optical lens is fixed in the lens mounting part, and one end of a plurality of insulation component supports is connected to the lens mounting part, and the other end is fixed to the layered insulation disk.

[0013] Furthermore, when the optical lens is sealed and fixed in the layered insulation tray, the top of the layered insulation tray is provided with a circle of mounting steps for placing the optical lens; the optical lens is fixedly set on the mounting steps so that the bottom of the optical lens is embedded in the layered insulation tray.

[0014] Furthermore, the heat-insulating glass is any one of heat-resistant and high-transmittance coated optical glass, anti-oil mist coated glass, heat-resistant heat-insulating glass, and ordinary glass.

[0015] Furthermore, the surfaces of the layered heat-insulating plate and the glass spacer are provided with black matte patterns or anti-reflective treatment layers.

[0016] Furthermore, the internal gaps of the layered thermal insulation assembly are any one of an inert gas filling layer, a vacuum layer, and a natural air filling layer.

[0017] Furthermore, the lens anti-oil mist device also includes: a lens cover; the optical lens and the layered heat insulation component are both fixed in the lens cover.

[0018] A stage lamp comprises the lens oil mist prevention device.

[0019] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0020] A layered insulation component is set at the front end of the light path near the optical lens. By setting one, two or more insulation glasses in the layered insulation disk as needed, one-level, two-level or multiple-level insulation temperature zones are formed. When the light source beam passes through each insulation temperature zone in turn, it will have a step-by-step cooling effect. In this way, the inner and outer sides of each layered insulation glass or optical lens are close to thermal equilibrium, that is, the temperature difference between the inside and outside is reduced, and the condensation of oil mist and water vapor is effectively avoided, which plays a good anti-oil mist role in practical applications.

[0021] Compared to existing technologies that rely on internal or external air circulation within the lamp to expel accumulated oil and water mist, the present invention achieves thermal equilibrium and reduces temperature differences between the inside and outside of the lens. Furthermore, multiple layers of insulation can be designed as needed to provide gradual cooling. This essentially eliminates the natural generation and accumulation of oil and water mist within the lamp, resulting in significantly superior anti-oil mist effectiveness. Furthermore, frequent and regular exhaust of the lamp is unnecessary, saving maintenance costs. Furthermore, the lamp also eliminates the need for various blowers, air guides, airflow circuits, and other components, saving on lamp component costs. Furthermore, the internal structure of the stage lamp is more compact, lightweight, and miniaturized, better in line with current stage lighting trends. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the internal structure of a stage lighting fixture;

[0023] FIG2 is an exploded view of the lens cover, optical lens, and layered thermal insulation assembly;

[0024] FIG3 is a front view of the first embodiment;

[0025] FIG4 is an exploded schematic diagram of Example 1;

[0026] FIG5 is a cross-sectional view of Example 1;

[0027] FIG6 is a perspective view of the second embodiment;

[0028] FIG7 is an exploded schematic diagram of the second embodiment;

[0029] FIG8 is a cross-sectional view of the second embodiment;

[0030] FIG9 is a front view of the third embodiment;

[0031] FIG10 is an exploded schematic diagram of Example 3;

[0032] FIG11 is a cross-sectional view of Example 3;

[0033] FIG12 is a perspective view of the fourth embodiment;

[0034] FIG13 is an exploded schematic diagram of the fourth embodiment;

[0035] FIG14 is a cross-sectional view of the fourth embodiment;

[0036] FIG15 is a schematic diagram showing the temperature inside and outside of a lens in the prior art;

[0037] FIG16 is a schematic diagram showing the temperature inside and outside the lens in the present invention.

[0038] In the figure: 10, optical lens; 20, layered insulation assembly; 21, layered insulation plate; 211, installation step; 22, insulation glass; 23, glass spacer gasket; 24, lens mounting part; 25, insulation assembly support rod; 30, lens cover; 40, lens waterproof ring. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0040] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and may encompass internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] Referring to Figure 1, the present invention discloses a lens oil mist prevention device, primarily used in stage lighting fixtures. The device comprises an optical lens 10 and a layered heat-insulating assembly 20 disposed below the optical lens 10 (based on the upward light emission direction of the lighting fixture). The optical lens 10 can be the light-emitting lens on the light-emitting side of the stage lighting fixture or another lens within the fixture. In this embodiment, the light-emitting lens is used as an example for illustration.

[0044] Referring to Figures 3 to 5, the layered insulation assembly 20 includes: a layered insulation tray 21 that plays a supporting role and a plurality of insulation glasses 22. The number of insulation glasses 22 is set as needed, depending on the emission temperature of the light source and the target light output temperature of the lamp. The insulation glasses 22 can be one, two or more. The insulation glasses 22 are fixed in the layered insulation tray 21 in a layered and spaced arrangement in the light output direction, so that several levels of insulation temperature zones are formed in the layered insulation tray 21. An insulation temperature zone is also a chamber, and each insulation temperature zone can be an independent chamber, that is, different chambers are not connected to each other; or different insulation temperature zones can be interconnected chambers.

[0045] The optical lens 10 is fixedly connected to the layered heat-insulating plate 21 , or the optical lens 10 is directly sealed and fixed in the layered heat-insulating plate 21 , and there is also a gap between the optical lens 10 and the uppermost piece of heat-insulating glass 22 .

[0046] Specifically, when the number of insulating glasses 22 is one, an insulating temperature zone will be formed between the insulating glass 22 and the optical lens 10; when the number of insulating glasses 22 is two or more, in addition to the insulating temperature zone formed between the insulating glass 22 and the optical lens 10, insulating temperature zones will also be formed between different insulating glasses 22.

[0047] 1 , the optical lens 10 is located at the front end of the insulating glass 22 so that the light beam of the lamp light source passes through several levels of insulating temperature zones in sequence and is cooled step by step before passing through the optical lens 10 and emitting light.

[0048] Based on the different structures of the layered insulation assembly 20 and the different connection methods between the optical lens 10 and the layered insulation disk 21, the present invention can have the following four embodiments.

[0049] Example 1:

[0050] Referring to Figures 3-5 , the structure of the layered insulation tray 21 is a hollow cylindrical structure. When there are at least two insulating glasses 22, the layered insulation assembly 20 also includes a glass spacer 23 for separating the two insulating glasses 22. The glass spacer 23 is fixed within the layered insulation tray 21, with the top and bottom of the same glass spacer 23 respectively abutting against the insulating glass 22, thereby forming an insulating temperature zone between the different insulating glasses 22. The optical lens 10 and the layered insulation assembly 20 are connected using a lens mount 24 and an insulation assembly support rod 25. One end of the multiple insulation assembly supports is connected to the lens mount 24, and the other end is fixed to the layered insulation tray 21, thereby forming a gap between the optical lens 10 and the topmost insulating glass 22. This connection method facilitates the installation or replacement of the optical lens 10.

[0051] Example 2:

[0052] Referring to Figures 6-8 , the structure of the layered insulation tray 21 is identical to that of the first embodiment. Unlike the first embodiment, the optical lens 10 and the layered insulation tray 21 are fully sealed. Specifically, the layered insulation tray 21 is a hollow cylindrical structure. When there are at least two insulating glass panes 22, the layered insulation assembly 20 further includes a glass spacer 23 for separating the two insulating glass panes 22. The glass spacer 23 is secured within the layered insulation tray 21, with the top and bottom of the spacer 23 of the same glass pane respectively contacting the insulating glass pane 22, thereby forming thermally isolated temperature zones between the different insulating glass panes 22. A fully sealed assembly is used between the optical lens 10 and the layered insulation disk 21: a circle of mounting steps 211 is provided on the top of the layered insulation disk 21 for placing the optical lens 10; the optical lens 10 is fixedly set on the mounting steps 211 so that the bottom of the optical lens 10 is embedded in the layered insulation disk 21, and the optical lens 10 and the layered insulation assembly 20 form a fully sealed component; this connection method is more conducive to the waterproof sealing performance of the entire assembly.

[0053] Example 3:

[0054] Referring to Figures 9-11, the structure of the layered insulation tray 21 differs from that of Examples 1 and 2. The layered insulation tray 21 is a trumpet-shaped structure that is wide at the top and narrow at the bottom. Several layers of mounting steps 211 are provided on the inner sidewall of the layered insulation tray 21 for placing insulating glass 22. When there are at least two insulating glass 22, the insulating glass 22 is positioned on different mounting steps 211 to form insulating temperature zones between the different insulating glass 22. This trumpet-shaped structure creates an extinction slope to prevent the light beam from reflecting out of the light outlet or blocking the light path. The optical lens 10 and the layered insulation assembly 20 are connected using a lens mounting member 24 and an insulation assembly support rod 25. Multiple insulation assembly supports are connected at one end to the lens mounting member 24 and fixed at the other end to the layered insulation tray 21, thereby creating a gap between the optical lens 10 and the topmost insulating glass 22. This connection method facilitates the installation or replacement of the optical lens 10.

[0055] Example 4:

[0056] Referring to Figures 12-14, the structure of the layered insulation tray 21 is the same as that of Example 3. Specifically, the structure of the layered insulation tray 21 adopts a hollow cylindrical structure. When the number of insulating glasses 22 is at least two, the layered insulation assembly 20 also includes a glass spacer 23 for separating the two insulating glasses 22; the glass spacer 23 is fixed in the layered insulation tray 21, and the top and bottom of the same glass spacer 23 respectively abut against the insulating glass 22, thereby forming an insulating temperature zone between the different insulating glasses 22; this trumpet-shaped structure forms an extinction slope to prevent the light beam from reflecting out of the light outlet or blocking the light path. Different from the third embodiment, a fully sealed assembly is adopted between the optical lens 10 and the layered insulation disk 21: a circle of mounting steps 211 is provided on the top of the layered insulation disk 21 for placing the optical lens 10; the optical lens 10 is fixedly set on the mounting steps 211 so that the bottom of the optical lens 10 is embedded in the layered insulation disk 21, and the optical lens 10 and the layered insulation assembly 20 form a fully sealed component; this connection method is more conducive to the waterproof sealing performance of the entire assembly.

[0057] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0058] A layered insulation assembly 20 is positioned at the front end of the optical path, near the optical lens 10. By placing one, two, or more insulating glass panels 22 within the layered insulation tray 21, as needed, one, two, or more thermally isolated zones are formed. As the light beam passes through each zone, it experiences a gradual cooling effect. This allows the interior and exterior of each layered insulating glass panel 22 or optical lens 10 to approach thermal equilibrium, minimizing the temperature difference between the inside and outside, effectively preventing the condensation of oil mist and water vapor, and effectively preventing oil mist in practical applications.

[0059] Compared to existing technologies that rely on internal or external air circulation within the lamp to expel accumulated oil and water mist, the present invention achieves thermal equilibrium and reduces temperature differences between the inside and outside of the lens. Furthermore, multiple layers of insulation can be designed as needed to provide gradual cooling. This essentially eliminates the natural generation and accumulation of oil and water mist within the lamp, resulting in significantly superior anti-oil mist effectiveness. Furthermore, frequent and regular exhaust of the lamp is unnecessary, saving maintenance costs. Furthermore, the lamp also eliminates the need for various blowers, air guides, airflow circuits, and other components, saving on lamp component costs. Furthermore, the internal structure of the stage lamp is more compact, lightweight, and miniaturized, better in line with current stage lighting trends.

[0060] As evidence, in actual testing under specific operating conditions (see Figure 15 ), in a prior art system without the layered insulation assembly of the present invention, the internal temperature of the lamp was approximately 70°C, while the external temperature of the optical lens 10 was approximately 40°C. The temperature difference between the inside and outside of the optical lens 10 was approximately 30°C, a temperature difference that is highly susceptible to the generation and condensation of oil mist and water vapor. In contrast, in the present technical solution employing the layered insulation assembly, using three layers of insulating glass (three insulation zones) as an example, the internal temperature of the lamp was approximately 70°C, and the temperatures of the insulation zones, from bottom to top, were approximately 60°C, 50°C, and 40°C, respectively. The theoretical error for the top insulation zone was no more than 5°C, while the external temperature of the optical lens 10 was approximately 40°C. This means that the temperature difference between the inside and outside of the optical lens 10 was close to 0°C, with a maximum of no more than 5°C. Under these conditions, the generation of oil and water mist due to temperature differences is essentially eliminated.

[0061] In the first and third embodiments, in order to improve the waterproof sealing performance of the assembly, referring to FIG. 4 and FIG. 10 , a lens waterproof ring 40 is further provided on the optical lens 10 .

[0062] Preferably, the type of the heat-insulating glass 22 can be heat-resistant and high-transmittance coated optical glass, anti-oil mist coated glass, heat-resistant and heat-insulating glass 22, or other ordinary glass.

[0063] Preferably, the surfaces of the layered heat-insulating disk 21 and the glass spacer 23 are provided with black matte patterns or are subjected to anti-reflective treatment, so that the light output effect of the light beam is more concentrated.

[0064] Preferably, in order to achieve a better cooling effect, the gaps inside the layered insulation assembly 20 can be filled with inert gas or vacuumed; of course, only natural air can be used as the filling.

[0065] Preferably, referring to Figures 1 and 2, the present invention also includes a lens cover 30, which supports and provides an installation position for the optical lens 10 and the layered insulation assembly 20. The optical lens 10 and the layered insulation assembly 20 are both fixed in the lens cover 30.

[0066] The present invention also discloses a stage light that includes the aforementioned lens oil mist prevention device, as well as other commonly used functional components of stage lighting fixtures, such as light source heat dissipation components, zoom components, etc. Any stage light that utilizes the same or substantially the same lens oil mist prevention device shall be within the scope of protection of the present invention.

[0067] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A lens anti-oil mist device, characterized in that: include: Optical lens; A layered heat-insulating assembly disposed below the optical lens includes: a layered heat-insulating plate and a plurality of heat-insulating glasses; The insulating glass is fixed in the layered insulating tray in a layered and spaced arrangement in the light emitting direction, so that several levels of insulating temperature zones are formed in the layered insulating tray; each of the insulating temperature zones is an independent chamber, or different insulating temperature zones are interconnected chambers. The optical lens is fixedly connected to the layered insulation disk, or the optical lens is sealed and fixed in the layered insulation disk; the optical lens is placed in the front end direction of the insulation glass so that the light beam of the lamp reaches the optical lens after passing through several levels of insulation temperature zones in sequence.

2. The lens anti-oil mist device according to claim 1, characterized in that: The layered insulation tray is a hollow cylindrical structure; when the number of the insulating glasses is at least two, the layered insulation assembly further comprises: a glass spacer gasket; the glass spacer gasket is fixed in the layered insulation tray, and the top and bottom of the glass spacer gasket are respectively in contact with the insulating glasses to form insulating temperature zones between different insulating glasses.

3. The lens anti-oil mist device according to claim 1, characterized in that: The layered insulation tray is a trumpet-shaped structure that is wide at the top and narrow at the bottom; a plurality of installation steps for placing the insulation glass are arranged on the inner side wall of the layered insulation tray; when the number of the insulation glass is at least two, the insulation glass is arranged on different installation steps to form insulation temperature zones between the different insulation glasses.

4. The lens anti-oil mist device according to claim 1, characterized in that: When the optical lens is fixedly connected to the layered insulation disk, the lens oil mist prevention device also includes: a lens mounting member and an insulation component support rod; the optical lens is fixed in the lens mounting member, and one end of a plurality of insulation component supports is connected to the lens mounting member, and the other end is fixed to the layered insulation disk.

5. The lens anti-oil mist device according to claim 1, characterized in that: When the optical lens is sealed and fixed in the layered insulation tray, a circle of mounting steps for placing the optical lens is provided on the top of the layered insulation tray; the optical lens is fixedly arranged on the mounting steps so that the bottom of the optical lens is embedded in the layered insulation tray.

6. The lens anti-oil mist device according to claim 1, characterized in that: The heat-insulating glass is any one of heat-resistant high-transmittance coated optical glass, anti-oil mist coated glass, heat-resistant heat-insulating glass, and ordinary glass.

7. The lens anti-oil mist device as claimed in claim 2, characterized in that: The surfaces of the layered heat-insulating plate and the glass spacer are provided with black matte patterns or anti-reflective treatment layers.

8. The lens anti-oil mist device according to claim 1, characterized in that: The internal space of the layered heat insulation component is any one of an inert gas filling layer, a vacuum layer, and a natural air filling layer.

9. The lens anti-oil mist device according to claim 1, characterized in that: The lens anti-oil mist device also includes: a lens cover; the optical lens and the layered heat insulation component are both fixed in the lens cover.

10. A stage light, characterized in that: The invention comprises a lens oil mist prevention device as claimed in any one of claims 1 to 9.

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