Universal camera protective cover for expressway

Abstract

The utility model relates to the technical field of intelligent traffic, in particular to a universal camera protective cover for an expressway, which is used for protecting a snapshot camera arranged on an installation cross arm of the expressway and comprises an upper shell and a lower shell, the lower shell extends downwards from two ends of the upper shell, the upper shell is fixed on the upper surface of the snapshot camera, and the snapshot camera is fixed on the lower surface of the upper shell. The lower shell is used for wrapping the side face and the lower surface of the snapshot camera, the lower shell is not attached to the snapshot camera, and the upper shell and the lower shell are fixedly connected. Under the condition of excessive illumination, the shading coating at the front end of the protective cover effectively solves the problems of sunlight irradiation and lens reflection. Under the condition of rainy and snowy weather, the license plate snapshot recognition rate of vehicles passing through the expressway is improved to 98% from the original minimum value of 72%, the snapshot effect of the vehicles is greatly improved, the full-surrounding design not only blocks raindrops in the air, but also can block the problem that water vapor brought by the vehicles rises, and the drainage gap in the protective cover solves the problem of water drop gathering.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent transportation, in particular to a universal camera protective cover for highways. Background Art

[0002] With the continuous development of intelligent transportation systems, highway monitoring systems have become the key to ensuring traffic safety and smooth operation. In highway monitoring systems, snapshot cameras are important equipment for recording traffic violations and monitoring road conditions, and their stability and reliability are crucial. However, due to the particularity of the highway environment, snapshot cameras are often faced with threats such as bad weather and dust pollution, which have a serious impact on their normal operation and image quality.

[0003] Excessive light and rainy and snowy weather are the two main interference factors that affect the normal operation of the mainline license plate recognition camera. Both of these factors are unfixed variables and are difficult to solve with the camera's adaptive function alone. Excessive light will cause the problem of camera mirror reflection. Rainy and snowy weather will easily cause raindrops and water vapor to adhere to the surface of the camera lens. The ground water vapor is easily driven up by the vehicle, which ultimately leads to the camera's unsatisfactory effect of capturing vehicles and a reduced vehicle license plate recognition rate. Therefore, keeping the surface of the capture camera lens dry and clean to the greatest extent possible and avoiding the influence of external factors on the camera have become the key points in the design and application of protective covers.

[0004] Although the camera protective covers currently available on the market can provide protection to a certain extent, they still have the following problems: (1) Incomplete protection: Some protective covers can only protect part of the surface of the camera and cannot fully cover the camera, resulting in the camera's sides and bottom still being exposed. Although they can provide a certain degree of protection for the camera, the protection capacity is relatively general. In weather conditions with normal illumination and less rain and snow, they have a certain degree of anti-interference ability. However, in the case of excessive light (such as sunrise or west sun) or heavy rain and snow, the camera lens may reflect the mirror or there may be raindrops or water vapor, and the accuracy of vehicle license plate recognition will still decline significantly. (2) Poor heat dissipation performance: In order to achieve a comprehensive protection effect, some protective covers wrap the camera too tightly, resulting in poor heat dissipation of the camera, which in turn affects its working performance and stability. (3) Poor adaptability: Due to the variety of highway cross arm sizes and camera models, some protective covers cannot adapt to different installation environments and requirements, limiting their scope of application.

[0005] Therefore, designing a protective cover that can fully protect the snapshot camera and ensure its stable operation in various harsh environments has become an urgent problem to be solved in the current highway monitoring system.

[0006] The information disclosed in this background section is only intended to deepen the understanding of the general background of the present utility model, and should not be regarded as an admission or an implication in any form that this information constitutes the prior art known to those skilled in the art. Summary of the Utility Model

[0007] The technical problem to be solved by the present utility model is: to provide a general-purpose camera protective cover for highways, which solves the problem of poor license plate recognition effect of highway sign recognition cameras due to the presence of attachments such as raindrops and water vapor on the lens surface or due to direct sunlight on the mirror surface.

[0008] To achieve the above object, the technical solution of the present utility model is:

[0009] A general-purpose camera protective cover for highways, which is used to protect the capture camera set on the installation cross arm of the highway, includes an upper shell and a lower shell. The lower shell extends downward from both ends of the upper shell. The upper shell is fixed on the upper surface of the capture camera. The lower shell is used to wrap the side and lower surface of the capture camera. The lower shell does not fit closely with the capture camera. The upper shell and the lower shell are fixedly connected.

[0010] Further, a plurality of universal joints are provided on the installation cross arm. The capture camera is arranged at the other end of the universal joint away from the installation cross arm. A lens is arranged at one end of the capture camera away from the universal joint, and the lens faces the road surface. The camera protective cover is sleeved on the capture camera.

[0011] Further, the length of the upper shell is greater than the length of the capture camera.

[0012] Further, installation holes are provided on the upper shell for fixing with the upper surface of the capture camera.

[0013] Further, the lower shell includes a lower panel and two side panels. Both ends of the two side panels are respectively connected to the lower panel and the upper panel.

[0014] Further, the length of the lower panel is less than the length of the capture camera, and the projection of the side panel is trapezoidal.

[0015] Further, the edges of the upper shell and the lower shell at the end facing the lens are flush and coated with a light-shielding coating.

[0016] Further, anti-detachment installation holes are provided on the side of the lower shell. A traction rope is arranged in the anti-detachment installation holes, and the other end of the traction rope is fixed on the installation cross arm.

[0017] Further, the cross section of the lower shell is in a "U" shape or an arc shape.

[0018] Further, the camera protective cover is made of stainless steel titanium plate.

[0019] The beneficial effects of the utility model are:

[0020] 1. In the case of excessive light, the shading coating on the front of the protective cover effectively solves the problem of sunlight exposure and lens reflection. In rainy and snowy weather, the license plate capture recognition rate of vehicles passing through the highway has increased from the original minimum of 72% to 98%, greatly improving the vehicle capture effect. The full-surround design not only blocks raindrops in the air, but also blocks the problem of water vapor rising caused by vehicles. The drainage gap inside the protective cover solves the problem of water droplet accumulation.

[0021] 2. The innovative installation process and anti-falling device can effectively ensure that the protective cover will not fall off easily even under long-term use and bad weather. Even if it falls off, it will not fall to the road surface, which is a "double insurance". It prevents the safety hazards caused by the installed equipment to the main line vehicles to the greatest extent.

[0022] 3. The innovative use of stainless steel titanium plate material has the characteristics of light weight and strong durability, and will not cause additional load-bearing pressure on the camera. At the same time, its production cost is relatively low, and it has the characteristics of low price and high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the installation of the camera protective cover on a highway in Embodiment 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the camera protective cover in Embodiment 1 of the present utility model;

[0026] Figure 3 This is a schematic structural diagram of the camera protective cover in Embodiment 1 of the present utility model from another angle;

[0027] Figure 4 This is a front view of the camera protective cover in Embodiment 1 of the present utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the camera protective cover in Embodiment 2 of the present utility model;

[0029] Attached figures: 01, mounting cross arm; 02, snapshot camera; 10, camera protective cover; 11, upper shell; 12, lower shell; 03, universal joint; 04, lens; 13, mounting hole; 14, lower panel; 15, side panel; 16, anti-fall mounting hole; 17, traction rope. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] Example 1

[0034] like Figures 1 to 4 A universal highway camera protective cover 10 is shown, which is used to protect the snapshot camera 02 installed on the installation cross arm 01 of the highway, and includes an upper shell 11 and a lower shell 12. The lower shell 12 extends downward from both ends of the upper shell 11. The upper shell 11 is fixed on the upper surface of the snapshot camera 02. The lower shell 12 is used to wrap the side and lower surface of the snapshot camera 02. The lower shell 12 is not in contact with the snapshot camera 02, and the upper shell 11 and the lower shell 12 are fixedly connected. Specifically, it can also be integrally formed, which can enhance the overall strength and stability of the camera protective cover 10. Gaps and potential damage points caused by assembly are reduced, thereby improving the durability and protective effect of the camera protective cover 10.

[0035] Specific as Figure 1As shown, the right side is the snapshot camera 02 without the camera protective cover 10 installed, and the left side is the snapshot camera 02 with the camera protective cover 10 installed. The camera protective cover 10 designed by the utility model effectively solves the problem of sunlight exposure and lens 04 reflection in the case of excessive light. In rainy and snowy weather, the license plate capture recognition rate of vehicles passing on the highway has increased from the original minimum value of 72% to 98%, greatly improving the vehicle capture effect. The fully enclosed design not only blocks raindrops in the air, but also blocks the problem of water vapor rising caused by vehicles. The internal drainage gap of the camera protective cover 10 solves the problem of water droplet accumulation.

[0036] In the utility model, the lower shell 12 is not in contact with the snapshot camera 02, so as to avoid overheating of the camera during operation. At the same time, it can be adapted to snapshot cameras 02 of different specifications, and a 2-3 cm drainage gap is reserved on the lower surface and side thereof to improve the heat dissipation, ventilation and drainage effect of the camera protective cover 10.

[0037] like Figures 2~4 As shown, a plurality of universal joints 03 are arranged on the mounting cross arm 01, and the snapshot camera 02 is arranged at the other end of the universal joint 03 away from the mounting cross arm 01, and a lens 04 is arranged at one end of the snapshot camera 02 away from the universal joint 03, and the lens 04 faces the road surface, and the camera protective cover 10 is sleeved on the snapshot camera 02. That is, the snapshot camera 02 is installed in an integrated manner from the end of the lens 04 along the length, and is fixed by the mounting hole 13 and the anti-drop mounting hole 16, which simplifies the installation process and improves the installation efficiency. At the same time, the maintenance of the camera protective cover 10 is more convenient and the maintenance cost is reduced.

[0038] like Figure 2 and 3 As shown, the length of the upper housing 11 is greater than the length of the snapshot camera 02. Preferably, the end of the camera protective cover 10 close to the lens 04 exceeds the position of the lens 04 by 2-3 cm to prevent rain from standing directly on the lens 04.

[0039] like Figure 2 As shown, the upper shell 11 is provided with a mounting hole 13 for fixing to the upper surface of the snapshot camera 02 .

[0040] To avoid adding extra load to the camera, most of the existing finished camera protection covers 10 are made of PVC material and the installation process mostly uses the method of gluing. Their service life and usage cycle are relatively poor. Especially when used in the complex and changeable environment of highways, problems such as aging, weathering, and even glue separation are likely to occur. Once these problems occur, it is easy for the whole or part of the camera protection cover 10 to fall onto the main road surface of the highway, posing a hidden danger to road traffic safety. The camera protection cover 10 designed by the present utility model fixes the upper shell 11 on the capture camera 02, and the camera protection cover 10 is made of stainless steel titanium plate. It has the characteristics of light weight and strong durability, and there will be no problems such as aging, weathering, and fragmentation. Its quality will not add too much load pressure to the camera, effectively avoiding the vertical displacement of the camera due to long-term load, and then affecting parameters such as the focal length and angle of the camera. At the same time, the innovative "integrated" installation process and anti-dropping device make full use of the hardware structure of the camera itself. Without additional fastening measures, it improves the maintenance convenience and further strengthens the safety of using the camera protection cover 10.

[0041] Specifically, the lower shell 12 includes a lower panel 14 and two side panels 15. The two ends of the two side panels 15 are respectively connected to the lower panel 14 and the upper panel. The length of the lower panel 14 is less than the length of the capture camera 02, and the shape of the side panel 15 is trapezoidal.

[0042] The edges of the upper shell 11 and the lower shell 12 at one end facing the lens 04 are flush and coated with a light-shielding coating. The fully enclosed design can block the intrusion of raindrops and water vapor in all directions, and the internal drainage gap can smoothly drain the water droplets. The light-shielding coating in the front area of the camera protection cover 10 can effectively solve the lighting problem.

[0043] As Figure 3 shown, an anti-dropping installation hole 16 is provided on the side of the lower shell 12. A traction rope 17 is arranged in the anti-dropping installation hole 16, and the other end of the traction rope 17 is fixed on the installation cross arm 01. Even during long-term use and in bad weather, it can effectively ensure that the camera protection cover 10 does not fall off easily. Even if it falls off, it will not fall onto the road surface, providing a "double insurance" to prevent the safety hazards caused by the additional equipment to the main-line vehicles to the greatest extent. The cross-section of the lower shell 12 is "U"-shaped.

[0044] Specifically in this embodiment, the upper shell 11 is a horizontally arranged mounting plate with a length of 55 cm and a width of 22 cm. The cross-section of the lower shell 12 is "U"-shaped, where the length of the lower panel 14 is 30 cm and the width is 22 cm. The two ends of the two side panels 15 are respectively fixed to the upper shell 11 and the lower panel 14. The length of the side panel 15 fixed to the upper shell 11 is 55 cm, and the length fixed to the lower panel 14 is 30 cm. The height of the side panel 15 is 16.5 cm. Those skilled in the art can make adjustments according to the actual situation.

[0045] Example 2

[0046] like Figure 5 As shown, in this embodiment, the cross section of the lower housing 12 is arc-shaped, and the projection of the side plate 15 is trapezoidal. Those skilled in the art can make adjustments according to actual conditions.

[0047] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A general-purpose camera protective cover for highways, which is used to protect the capture camera set on the installation cross arm of the highway. It is characterized in that it includes an upper shell and a lower shell. The lower shell extends downward from both ends of the upper shell. The upper shell is fixed on the upper surface of the capture camera. The lower shell is used to wrap the side and lower surface of the capture camera. The lower shell does not fit closely with the capture camera. The upper shell and the lower shell are fixedly connected.

2. A universal highway camera protective cover according to claim 1, characterized in that: A plurality of universal joints are provided on the installation cross arm. The capture camera is arranged at the other end of the universal joint away from the installation cross arm. A lens is arranged at the end of the capture camera away from the universal joint, and the lens faces the road surface. The camera protective cover is sleeved on the capture camera.

3. A universal highway camera protective cover according to claim 2, characterized in that: The length of the upper shell is greater than the length of the capture camera.

4. A universal highway camera protective cover according to claim 3, characterized in that: Mounting holes are provided on the upper shell for fixing with the upper surface of the capture camera.

5. The universal highway camera protective cover according to claim 2, characterized in that: The lower shell includes a lower panel and two side panels. Both ends of the two side panels are respectively connected to the lower panel and the upper shell.

6. A universal highway camera protective cover according to claim 5, characterized in that: The length of the lower panel is less than the length of the capture camera, and the projection of the side panel is trapezoidal.

7. The universal highway camera protective cover according to claim 2, characterized in that: The edges of the upper shell and the lower shell at the end facing the lens are flush and coated with a light-shielding coating.

8. The universal highway camera protective cover according to claim 5, characterized in that: Anti-detachment mounting holes are provided on the side panel. A towing rope is arranged in the anti-detachment mounting hole, and the other end of the towing rope is fixed on the installation cross arm.

9. A universal highway camera protective cover according to any one of claims 1 to 8, characterized in that: The cross section of the lower shell is "U"-shaped or arc-shaped.

10. A universal highway camera protective cover according to any one of claims 1 to 8, characterized in that: The camera protective cover is made of stainless steel titanium plate.

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