Lens structure and photographic lamp

Abstract

The utility model relates to the technical field of photoflood lamp lenses, and discloses a lens structure and a photoflood lamp. The periphery of a lens assembly is hollow, and an airflow channel is formed; when the lens assembly is used on the photography lamp, the heat dissipation airflow dissipates and cools the photography lamp, the airflow channel allows the heat dissipation airflow to flow through, the heat dissipation airflow takes away heat of the lens assembly, the heat dissipation effect on the lens assembly is achieved, and the situation that a large amount of heat generated by the photography lamp is gathered on the lens assembly to cause high temperature of the lens assembly is effectively prevented. Therefore, the service life of the lens assembly is prolonged, and the performance of the lens assembly is improved.

Description

Technical Field

[0001] This application relates to the technical field of photographic lamp lenses, and particularly to lens structures and photographic lamps. Background Art

[0002] A photographic lamp is an auxiliary light source used to enhance the shooting effect of photos or videos, capable of controlling the direction and intensity of light, thereby creating specific light and shadow effects in the photo. When using a camera for shooting, various photographic lamps are used to create specific light and shadows. To obtain a better lighting effect, some accessories such as lenses are added to the front end of some photographic lamps; in the lens structure, materials with low melting points such as resin are used. Since a large amount of heat is generated when the photographic lamp works continuously for a long time, the heat accumulation will generate high temperature, which is likely to cause the lens structure to melt, or affect the adhesive, resulting in lens deformation and detachment, affecting the normal use of the lens, such as lens deformation, change in the focal spot radius, and change in refractive index, reducing the service life and performance of the lens. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this reason, the main purpose of this application is to propose a lens structure and a photographic lamp, aiming to solve the technical problem that a large amount of heat generated by the photographic lamp reduces the service life and performance of the lens.

[0004] To achieve the above object, this application proposes a lens structure applied to a photographic lamp, and the lens structure includes:

[0005] A lens assembly, the lens assembly is installed on the photographic lamp; the lens assembly is provided with an air flow channel; the air flow channel has a first opening and a second opening; the first opening and the second opening are arranged staggeredly along the circumferential direction of the lens assembly, and the first opening and the second opening are respectively located on the light incident side and the light exit side of the lens assembly.

[0006] Optionally, the lens assembly includes:

[0007] A lens body; the lens body includes a main body portion and a connecting portion; the connecting portion protrudes from the outer periphery of the main body portion and is arranged close to the light incident side of the main body portion; the first opening is located on the lens body;

[0008] A front cover, the front cover is sleeved on the outer periphery of the main body portion; the front cover, the outer periphery of the main body portion and the connecting portion enclose the air flow channel; the second opening is opened on the front cover.

[0009] Optionally, the first opening is opened on the main body portion; or,

[0010] The first opening is opened on the connecting portion; or,

[0011] The first opening is formed at the connection position between the main body portion and the connection portion.

[0012] Optionally, the lens structure further includes:

[0013] A fixing component, which is installed on the photographic lamp; the lens component is detachably connected to the fixing component.

[0014] Optionally, the fixing component includes:

[0015] A fixing sleeve, which is installed on the photographic lamp;

[0016] A magnetic member, which is installed on the fixing sleeve, and the magnetic member magnetically attracts and fixes the lens component.

[0017] Optionally, the lens component includes:

[0018] A pressure ring, which is magnetically connected to the magnetic member.

[0019] Optionally, the fixing sleeve is provided with a mounting hole, and the magnetic member is embedded in the mounting hole.

[0020] Optionally, the magnetic member includes a first end and a second end, the first end is embedded in the mounting hole; the outer peripheral dimension of the second end is smaller than that of the first end;

[0021] The fixing component further includes:

[0022] A reinforcing member, which is connected to the side of the fixing sleeve close to the lens component; the reinforcing member is provided with a limiting hole, and the second end is fitted and inserted into the limiting hole; the reinforcing member abuts against the end face of the first end.

[0023] Optionally, one end of the fixing sleeve facing the lens component is provided with an annular groove, and the reinforcing member is embedded in the annular groove.

[0024] Another technical solution proposed by the present application is as follows: A photographic lamp includes the lens structure as described above.

[0025] The present application provides a lens structure and a photographic lamp. The periphery of the lens component is provided with a hollow to form an air flow channel; when the lens component is used on the photographic lamp, the heat dissipation air flow cools the photographic lamp, and the air flow channel allows the heat dissipation air flow to flow through, and the heat dissipation air flow takes away the heat of the lens component, achieving the heat dissipation effect on the lens component, effectively preventing a large amount of heat generated by the photographic lamp from accumulating on the lens component and causing the lens component to be at a high temperature, affecting the service life and performance, and thus being beneficial to improving the service life and performance of the lens component. Description of the Drawings

[0026] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 Schematic perspective view of the photographic lamp provided by the present application;

[0028] Figure 2 Top view of the photographic lamp provided by the present application;

[0029] Figure 3 Cross-sectional view of the photographic lamp provided by the present application;

[0030] Figure 4 For Figure 2 Cross-sectional view in the direction of I-I in

[0031] Figure 5 Schematic perspective exploded view of the lens structure provided by the present application;

[0032] Figure 6 Schematic perspective exploded view of the cross-section of the lens structure provided by the present application;

[0033] Figure 7 For Figure 6 Enlarged view of part A in

[0034] Explanation of the reference numerals in the drawings:

[0035] 100, photographic lamp; 10, lens structure; 11, lens assembly; 111, air flow channel; 112, first opening; 113, second opening; 114, lens body; 1141, main body part; 1142, connecting part; 115, front cover; 116, pressing ring; 12, fixing component; 121, fixing sleeve; 1211, mounting hole; 1212, annular groove; 122, magnetic part; 1221, first end; 1222, second end; 123, strengthening part; 1231, limiting hole. Detailed implementation manners

[0036] In order to make the purpose, technical solutions and advantages of the present application more clear and understandable, the following will further elaborate on the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] The present application is based on the technical problem that a large amount of heat generated by a photographic lamp causes a decrease in the service life and performance of the lens, and provides a lens structure and a photographic lamp. The periphery of the lens assembly is hollowly arranged to form an air flow channel. When the lens assembly is used on the photographic lamp, the heat dissipating airflow dissipates heat and cools the photographic lamp. The air flow channel is used for the heat dissipating airflow to flow through, and the heat dissipating airflow takes away the heat of the lens assembly, thereby achieving a heat dissipation effect on the lens assembly, and effectively preventing a large amount of heat generated by the photographic lamp from accumulating in the lens assembly and causing the lens assembly to have a high temperature, thereby affecting the service life and performance, and thereby helping to improve the service life and performance of the lens assembly. For details, refer to the following embodiments.

[0038] See also Figure 1 In one embodiment of the present application, a photography light 100 is provided, comprising a lens structure 10. The lens structure 10 is installed on the photography light 100 and has the functions of focusing and evenly distributing light, and can also improve the photography effect by reducing optical aberrations and adjusting the image size and shape.

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, wherein, the lens structure 10 includes a lens assembly 11, and the lens assembly 11 is installed on the photographic lamp 100. The lens assembly 11 is provided with an air flow channel 111; specifically, the air flow channel 111 can be located at the peripheral position of the lens assembly 11. When the lens assembly 11 is used on the photographic lamp 100, the heat dissipation air flow cools down the photographic lamp 100, and the air flow channel 111 allows the heat dissipation air flow to flow through. The heat dissipation air flow takes away the heat of the lens assembly 11, achieving the heat dissipation effect on the lens assembly 11, effectively preventing a large amount of heat generated by the photographic lamp 100 from accumulating in the lens assembly 11 and causing the lens assembly 11 to be at a high temperature, which affects the service life and performance. Furthermore, it is beneficial to improve the service life and performance of the lens assembly 11. A heat dissipation fan can be arranged in the photographic lamp 100 to form a heat dissipation air flow through the heat dissipation fan, and then the heat is taken away by the heat dissipation air flow to prevent the heat from accumulating and the temperature from rising in the photographic lamp 100; since the lens assembly 11 has the air flow channel 111, which can be used as the heat dissipation air flow channel 111, the lens assembly 11 will not increase the heat dissipation burden of the photographic lamp 100. The light incident side of the lens assembly 11 refers to the side where the light emitted from the photographic lamp 100 will penetrate into the lens assembly 11 when the lens is normally installed and used on the photographic lamp 100; the light exit side of the lens assembly 11 refers to the side where the light emitted from the photographic lamp 100 passes through the lens assembly 11 and then exits the lens assembly 11 when the lens is normally installed and used on the photographic lamp 100; on the lens assembly 11, the light incident side and the light exit side are opposite to each other. The air flow channel 111 has a first opening 112 and a second opening 113, and the first opening 112 and the second opening 113 allow air to flow in and out. The first opening 112 and the second opening 113 are respectively located on the light incident side and the light exit side of the lens assembly 11; when the heat dissipation air flow flows from the light incident side of the lens assembly 11 to the light exit side of the lens assembly 11, the first opening 112 is the heat dissipation air flow inlet, and the second opening 113 is the heat dissipation air flow outlet; when the heat dissipation air flow flows from the light exit side of the lens assembly 11 to the light incident side of the lens assembly 11, the second opening 113 is the heat dissipation air flow inlet, and the first opening 112 is the heat dissipation air flow outlet. The first opening 112 and the second opening 113 are arranged in a staggered manner along the circumferential direction of the lens assembly 11, so that after the heat dissipation air flow enters the air flow channel 111 from the first opening 112 or the second opening 113, it will not directly flow out from the second opening 113 or the first opening 112, increasing the flow path of the heat dissipation air flow in the lens assembly 11, that is, increasing the contact area and contact time between the heat dissipation air flow and the lens assembly 11, which is beneficial to improving the heat dissipation effect on the lens assembly 11. The present application does not limit the number of the first opening 112 and the second opening 113. The number of the first opening 112 and the second opening 113 can be designed according to actual needs, such as one, two, three or more; when the number of the first opening 112 and the second opening 113 is designed to be more than one, two, three or more first openings 112 (or second openings 113) can be evenly distributed along the circumferential direction of the lens assembly 11.The present application does not limit the distribution range of the air flow channel 111. Preferably, the air flow channel 111 is distributed on the entire periphery of the lens assembly 11, so that the heat dissipation air flow has as long a flow path as possible on the lens assembly 11, and has a better heat dissipation effect on the lens assembly 11.

[0040] Please continue to refer to Figure 3 , the air flow channel 111 can be designed in an arc shape, which is beneficial to the smooth flow of the heat dissipation air flow, reduces the obstruction of the air flow channel 111 to the heat dissipation air flow, and thus is beneficial to improving the heat dissipation efficiency. When the air flow channel 111 is distributed on the entire periphery of the lens assembly 11, the air flow channel 111 has a circular or elliptical structure on the lens assembly 11.

[0041] Please refer to in combination Figure 2 , Figure 3 , Figure 4 and Figure 5, Further, the lens assembly 11 includes a lens body 114 and a front cover 115. The lens body 114 includes a main body portion 1141 and a connecting portion 1142. The functions of focusing the light output by the photographic lamp 100 and making the light uniform of the lens assembly 11 are mainly realized by the lens body. Specifically, the main body portion 1141 realizes the functions; the lens body can be in the form of a Fresnel lens. A Fresnel lens is a special annular pattern lens that can achieve good focusing effects with small lenses and lower curvatures. The Fresnel lens can increase the illuminance by at least 5 times, while forming a sharper spotlight effect and presenting a clearer edge effect. The connecting portion 1142 is used to mount the main body portion 1141 on the front cover 115; the connecting portion 1142 protrudes from the outer periphery of the main body portion 1141 and is arranged near the light incident side of the main body portion 1141, so that the outer shape of the lens body is in a stepped shape. The light emitting surface of the main body portion 1141 is designed to be transparent, and the light incident surface of the main body portion 1141 and the connecting portion 1142 can be designed to be frosted and translucent. The first opening 112 is located in the lens body 114 and can be specifically opened in the connecting portion 1142 or the main body portion 1141, or at the connection position between the connecting portion 1142 and the main body portion 1141. The front cover 115 is sleeved on the outer periphery of the main body portion 1141 and together with the outer periphery of the main body portion 1141 and the connecting portion 1142 encloses an air flow channel 111 to achieve the heat dissipation effect on the lens body; specifically, a notch is formed on the front cover 115, and a part of the outer periphery of the main body portion 1141 and a part of the connecting portion 1142 and the inner wall of the notch jointly enclose to form the air flow channel 111 for the heat dissipation air flow to flow through; when the heat dissipation air flow flows, it contacts the outer periphery of the main body portion 1141 and the connecting portion 1142, takes away the heat of the main body portion 1141 and the connecting portion 1142, prevents heat accumulation from causing high temperature of the main body portion 1141, and is beneficial to improving the service life and performance of the main body portion 1141. The second opening 113 is opened on the front cover 115 and can be specifically located at the inner edge of the front cover 115; since the second opening 113 is located on the front cover 115, that is, on the outer peripheral side of the light emitting part of the main body portion 1141, it effectively prevents the heat dissipation air flow flowing out from the second opening 113 from affecting the output light and causing light crosstalk, thereby ensuring the normal use of the lens assembly 11.

[0042] Please refer to Figure 1 , Figure 4 and Figure 6 , In yet another embodiment, the lens structure 10 further includes a fixing component 12. The fixing component 12 is installed on the photographic lamp 100 to enable the lens structure 10 to be used in the photographic lamp 100. The fixing component 12 is also used to fix the lens assembly 11 to the photographic lamp 100; the lens assembly 11 is detachably connected to the fixing component 12, and the connection method can be selected from magnetic attraction fixing, threaded connection, snap connection, etc., so that the assembly method of the lens assembly 11 and the fixing component 12 is simple and the installation is fast.

[0043] Please refer to Figure 5 , Figure 6 and Figure 7 , wherein the fixing component 12 includes a fixing sleeve 121 and a magnetic member 122. The fixing sleeve 121 is installed on the photographic lamp 100 and can be installed on the photographic lamp 100 by means of nesting or plugging, which is convenient for installation. The fixing sleeve 121 is a hollow sleeve-shaped structure, and the hollow part allows the heat dissipation air flow and light to pass through. The magnetic member 122 is installed on the fixing sleeve 121, and the magnetic member 122 magnetically attracts and fixes the lens assembly 11; the magnetic member 122 can be a magnet. The lens assembly 11 is fixed to the fixing sleeve 121 by means of magnetic attraction, and the installation method is fast and convenient. The fixing sleeve 121 is provided with an installation hole 1211, and the magnetic member 122 is embedded in the installation hole 1211, which can be an interference fit or a small clearance fit; the magnetic member 122 is installed in the installation hole 1211 by means of embedding, which is beneficial to reducing the occupation of the installation space and beneficial to reducing the overall volume of the fixing component 12. The number of the magnetic members 122 is not limited in this application, and one, two or more can be selected according to actual design needs. When more than one magnetic member 122 is used, the magnetic members 122 can be evenly distributed along the axial direction of the fixing sleeve 121 on the fixing sleeve 121, which is beneficial to improving the balance of the magnetic attraction force and thus ensuring the reliable connection between the fixing component 12 and the lens assembly 11.

[0044] Please continue to refer to Figure 5 , Figure 6 and Figure 7 , further, the magnetic member 122 includes a first end 1221 and a second end 1222, and the outer peripheral dimension of the second end 1222 is smaller than that of the first end 1221, so that a stepped surface is formed between the first end 1221 and the second end 1222, and the overall shape of the magnetic member 122 is T-shaped; the first end 1221 is embedded in the installation hole 1211, and an interference or clearance fit can be used to realize the installation of the magnetic member 122 on the fixing sleeve 121. The fixing component 12 further includes a reinforcing member 123, and the reinforcing member 123 is connected to the side of the fixing sleeve 121 close to the lens assembly 11 and can be connected to the fixing sleeve 121 by screws; the reinforcing member 123 is provided with a limiting hole 1231, and the second end 1222 is cooperatively inserted into the limiting hole 1231; the outer peripheral dimension of the second end 1222 is correspondingly set with the aperture of the limiting hole 1231 to prevent the first end 1221 from passing through the limiting hole 1231, that is, the magnetic member 122 from coming out of the installation hole 1211; the reinforcing member 123 abuts against the end surface (i.e., the stepped surface) of the first end 1221 to realize the limiting and fixing of the magnetic member 122 in the installation hole 1211, prevent the magnetic member 122 from detaching from the fixing sleeve 121 during use, and thus is beneficial to improving the connection reliability between the fixing component 12 and the lens assembly 11. The reinforcing member 123 can also not be used, and the connection reliability between the magnetic member 122 and the fixing sleeve 121 can be enhanced by means of gluing, but the fixing effect of the reinforcing member 123 is better.

[0045] Please continue to refer to Figure 5 , Figure 6 and Figure 7 , an annular groove 1212 is provided at one end of the fixing sleeve 121 facing the lens assembly 11, and the reinforcing member 123 is embedded in the annular groove 1212; the design of the annular groove 1212 not only realizes the hidden installation of the reinforcing member 123, but also facilitates the fixing of the reinforcing member 123 and the fixing sleeve 121 as a whole, so that the reinforcing member 123 has a reinforcing effect on the fixing sleeve 121, which is conducive to preventing the fixing sleeve 121 from deforming. The fixing sleeve 121 can be made of silicone material, and an in-mold injection iron ring is embedded in the fixing sleeve 121 to enhance the structural stability of the fixing sleeve 121; the reinforcing member 123 can be locked on the iron ring by screws to enhance the connection reliability of the reinforcing member 123 and the fixing sleeve 121.

[0046] Please continue to refer to Figure 5 and Figure 6 In another embodiment, the lens assembly 11 includes a pressure ring 116, which is magnetically connected to the magnetic member 122; the pressure ring 116 is made of a metal material that can be magnetically attracted; the pressure ring 116 is fixed to a side of the connecting portion 1142 close to the fixing assembly 12, so that the lens assembly 11 can be magnetically fixed by the magnetic member 122.

[0047] The present application provides a lens structure and a photographic light, wherein the periphery of the lens assembly is hollowly arranged to form an air flow channel; when the lens assembly is used on the photographic light, the heat dissipating airflow dissipates heat and cools the photographic light, and the air flow channel is used for the heat dissipating airflow to flow through, and the heat dissipating airflow takes away the heat of the lens assembly, thereby achieving a heat dissipation effect on the lens assembly, and effectively preventing a large amount of heat generated by the photographic light from accumulating in the lens assembly and causing high temperature of the lens assembly, thereby affecting the service life and performance, and thereby helping to improve the service life and performance of the lens assembly.

[0048] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0049] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of this application, the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, if "and / or", "or / and", or "and / or" appear throughout the text, their meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously.

[0050] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0051] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0052] The above are only the preferred embodiments of this application, and do not limit the patent scope of this application. Any equivalent structural transformation made by using the description of this application's specification and drawings under the application concept of this application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of this application.

Claims

1. A lens structure, applied to a photographic light, characterized in that: The lens structure comprises: A lens assembly, wherein the lens assembly is mounted on the video light; the lens assembly is provided with an air flow channel; the air flow channel has a first opening and a second opening; the first opening and the second opening are staggered along the circumference of the lens assembly, and the first opening and the second opening are respectively located on the light incident side and the light exit side of the lens assembly.

2. The lens structure according to claim 1, characterized in that: The lens assembly comprises: The lens body comprises a main body and a connecting portion; the connecting portion protrudes from the outer periphery of the main body and is arranged close to the light incident side of the main body; the first opening is located in the lens body; A front cover is sleeved on the outer periphery of the main body; the front cover, the outer periphery of the main body and the connecting part form the air flow channel; the second opening is opened on the front cover.

3. The lens structure according to claim 2, characterized in that: The first opening is provided in the main body; or The first opening is opened at the connecting portion; or, The first opening is disposed at a connecting position between the main body and the connecting portion.

4. The lens structure according to claim 1, characterized in that: The lens structure further comprises: A fixing component is installed on the photographic light; the lens component is detachably connected to the fixing component.

5. The lens structure according to claim 4, characterized in that: The fixing assembly comprises: A fixing sleeve, the fixing sleeve is installed on the video light; A magnetic component is installed on the fixing sleeve, and the magnetic component fixes the lens assembly by magnetic attraction.

6. The lens structure according to claim 5, characterized in that: The lens assembly comprises: A pressure ring is magnetically connected to the magnetic member.

7. The lens structure according to claim 5, characterized in that: The fixing sleeve is provided with a mounting hole, and the magnetic member is embedded in the mounting hole.

8. The lens structure according to claim 7, characterized in that: The magnetic member comprises a first end and a second end, the first end is embedded in the mounting hole; the outer circumference of the second end is smaller than the outer circumference of the first end; The fixing assembly further comprises: A reinforcing member, the reinforcing member is connected to a side of the fixing sleeve close to the lens assembly; the reinforcing member is provided with a limiting hole, the second end is cooperatively inserted in the limiting hole; the reinforcing member abuts against an end face of the first end.

9. The lens structure according to claim 8, characterized in that: An annular groove is provided at one end of the fixing sleeve facing the lens assembly, and the reinforcing member is embedded in the annular groove.

10. A photographic light, characterized in that: include: The lens structure according to any one of claims 1 to 9.

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