License plate recognition camera device with light supplementing and dazzle light preventing functions

Abstract

The utility model provides a license plate recognition camera device with light supplement and glare prevention. The license plate recognition camera device comprises a shell, a camera module and a light supplement module, wherein the camera module and the light supplement module are arranged in the shell; the camera module is used for shooting a license plate image, and the light supplementing module is used for illuminating a license plate; the light supplementing module is arranged near the camera module; the light supplementing module area is provided with a first light transmitting piece, the first light transmitting piece is provided with a light shading area, and the light shading area is used for shading a light emitting area of the light supplementing module. The problems that the license plate recognition effect at the entrance and exit of the parking lot is poor, and a certain degree of glare is caused to pedestrians and riders are solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of parking lot management and control equipment, and particularly relates to a license plate recognition camera device with light supplementing and anti-glare. BACKGROUND

[0002] The license plate recognition device is a basic configuration of the parking lot management and control equipment. In the case of poor ambient light, an additional light supplementing lamp is needed for recognizing the license plate. In order to improve the effect of license plate recognition, the existing light supplementing lamp usually adopts a high-brightness white light supplementing lamp. The high-brightness white light is very dazzling in the dark environment, which will cause a certain degree of glare to pedestrians and drivers, and affect the traffic safety. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a license plate recognition camera device with light supplementing and anti-glare, which solves the problem of poor license plate recognition effect at the entrance and exit of the parking lot, and causes a certain degree of glare to pedestrians and drivers.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is to provide a license plate recognition camera device with light supplementing and anti-glare, which comprises a shell, a camera module and a light supplementing module arranged in the shell. The camera module is used for shooting license plate images, and the light supplementing module is used for illuminating the license plate. The light supplementing module is arranged near the camera module. The light supplementing module region is provided with a first light transmission sheet, and the first light transmission sheet is provided with a light shielding region. The light shielding region is used for shielding the light rays propagating from outside to inside of the light emitting region of the light supplementing module.

[0005] Optionally, the light shielding region is coated with one or more layers of semi-transparent coating film.

[0006] Optionally, the light shielding region is attached with one or more layers of semi-transparent film.

[0007] Optionally, the substrate of the first light transmission sheet at the light shielding region is transparent, gray or brown.

[0008] Optionally, the light supplementing module is provided with two, which are arranged on the two sides of the camera module.

[0009] Optionally, the light supplementing module is provided with a plurality of, which are arranged around the camera module.

[0010] Optionally, the light supplementing module is provided with a plurality of, which are arranged on one side of the camera module.

[0011] Optionally, the light supplementing module is provided with a plurality of, which are arranged on one side of the camera module.

[0012] Optionally, the light-in surface of the camera module and the light-out surface of the light supplement module are arranged in steps on one side of the shell, wherein the light-in surface of the camera module is outwardly convex relative to the light-out surface of the light supplement module; or, wherein the light-out surface of the light supplement module is outwardly convex relative to the light-in surface of the camera module.

[0013] Optionally, the light-in surface of the camera module is provided with a second light-transmitting sheet, and a non-light-transmitting interval is arranged between the first light-transmitting sheet and the second light-transmitting sheet.

[0014] Optionally, a camera module accommodating hole and a light supplement module accommodating hole are arranged on the front surface of the shell, and a non-light-transmitting protrusion is arranged between the camera module accommodating hole and the light supplement module accommodating hole on the front surface of the shell, the non-light-transmitting protrusion divides the front surface of the shell into a first part and a second part, the first light-transmitting sheet covers the first part of the front surface of the shell, and the second light-transmitting sheet covers the second part of the front surface of the shell.

[0015] After the above technical scheme is adopted, the present application has the following beneficial effects:

[0016] The camera module and the light supplement module are arranged in the shell at the same time, the integration is greatly improved, the camera module and the light supplement module can be integrated under the same control module, the light supplement effect of the light supplement module is better, the license plate recognition is more accurate, the first light-transmitting sheet is arranged in the light supplement module region to protect the light supplement module, an shading region is arranged therein, in the case of insufficient light in the parking lot, the light supplement reduces the stimulation to the eyes of the driver, and the shading region is also used for shielding the light from the light-out region of the light supplement module and propagating from outside to inside, which is conducive to hiding the light supplement module and greatly improves the adaptability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order 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 needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a first light-transmitting sheet schematic view of a license plate recognition camera device with light supplement and anti-glare of the utility model;

[0019] Figure 2 is an embodiment 1 explosion schematic view of a license plate recognition camera device with light supplement and anti-glare of the utility model;

[0020] Figure 3 is Figure 2 middle shell structure schematic view;

[0021] Figure 4 is the whole structure schematic view of embodiment 1 of the utility model

[0022] Figure 5 is the light supplementing module arrangement schematic view of embodiment 1 of the utility model;

[0023] Figure 6 is Figure 1 the sectional view;

[0024] Figure 7 is the light supplementing module arrangement schematic view of embodiment 2 of the utility model;

[0025] Figure 8 is the light supplementing module arrangement schematic view of embodiment 3 of the utility model.

[0026] Mark explanation:

[0027] 1, light supplementing module;2, camera module;3, second light transmission sheet;4, first light transmission sheet;41, through hole;42, light shielding area;5, shell;51, light supplementing module accommodating hole;52, camera module accommodating hole;53, non-light transmission interval;531, non-light transmission protrusion;54, frame;55, light supplementing module light exit surface;56, camera module light entrance surface;6, waterproof gasket;7, bottom shell;8, threading hole;9, waterproof light shield. Specific implementation

[0028] The application is further described in detail below with reference to the drawings.

[0029] The specific embodiment is only an explanation of the application, and is not a limitation of the application, and those skilled in the art can make modifications to the embodiment without creative contribution according to the needs after reading the specification, but as long as the modifications are within the scope of the claims of the application, they are protected by the patent law.

[0030] Embodiment 1:

[0031] A license plate recognition camera device with light supplementing and anti-glare, specifically as shown in Figure 1 and Figure 2 , comprising a shell 5 and a camera module 2 and a light supplementing module 1 in the shell 5;The camera module 2 is used for shooting license plate images, and the light supplementing module 1 is used for illuminating license plates;The light supplementing module 1 is arranged near the camera module 2, and optionally, the distance between the light supplementing module 1 and the camera module 2 is set to be between 0.5cm-20cm;The light supplementing module 1 region is provided with a first light transmission sheet 4, the first light transmission sheet 4 is provided with a light shielding area 42, and the light shielding area 42 is used for shielding the light rays of the light exit area of the light supplementing module 1 from outside to inside.

[0032] Optionally, as shown in Figure 6As shown, the light-shielding area 42 is coated with one or more layers of translucent coating film.

[0033] Optionally, as Figure 6 shown, the light-shielding area 42 is attached with one or more layers of translucent film.

[0034] Optionally, the base layer of the first light-transmitting sheet 4 at the light-shielding area 42 is transparent, gray or brown.

[0035] Optionally, the light-supplementing module 1 is provided with two, respectively arranged on both sides of the camera module 2, as Figure 5 shown, so that the light-supplementing module 1 can supplement light from both sides of the camera module 2. Since the irradiation angle of the light-supplementing module 1 and the shooting angle of the camera module 2 are the same, the light supplement can cover the entire recognition area of the camera module 2, so that the camera module 2 reduces the requirement for light supplement brightness, reduces power consumption, reduces glare, and improves license plate recognition effect.

[0036] Optionally, as Figure 3 shown, the camera module light entrance surface 56 and the light-supplementing module light exit surface 55 are arranged on the same plane of the shell 5.

[0037] Optionally, the camera module light entrance surface 56 and the light-supplementing module light exit surface 55 are arranged in steps on one side of the shell 5, wherein the camera module light entrance surface 56 is outwardly protruding relative to the light-supplementing module light exit surface 55, and in some embodiments, the light-supplementing module light exit surface 55 is outwardly protruding relative to the camera module light entrance surface 56; which can improve the light supplement effect and improve the license plate recognition effect.

[0038] Optionally, the camera module light entrance surface 56 is provided with a second light-transmitting sheet 3, and a non-light-transmitting interval 53 is arranged between the first light-transmitting sheet 4 and the second light-transmitting sheet 3.

[0039] Optionally, as Figure 3 shown, the front surface of the shell 5 is provided with a camera module accommodating hole 52 and a light-supplementing module accommodating hole 51, and a non-light-transmitting protrusion 531 is arranged between the camera module accommodating hole 52 and the light-supplementing module accommodating hole 51 on the front surface of the shell 5. The non-light-transmitting protrusion 531 divides the front surface of the shell 5 into a first part and a second part, the first light-transmitting sheet 4 covers the first part of the shell 5, and the second light-transmitting sheet 3 covers the second part of the shell 5.

[0040] The side of the shell 5 towards the vehicle is provided with a camera module accommodating hole 52 corresponding to the camera module 2 for accommodating the camera module 2 and a light supplementing module accommodating hole 51 corresponding to the light supplementing module 1 for accommodating the light supplementing module 1. The camera module accommodating hole 52 is arranged at the center of the shell 5, which can ensure the best view angle of the camera module 2 and improve the license plate recognition effect. The light supplementing module accommodating holes 51 are symmetrically arranged on both sides of the camera module accommodating hole 52, which can supplement light to the license plate area from both sides and improve the license plate recognition effect. The camera module accommodating hole 52 is arranged on the camera module light inlet surface 56, and the light supplementing module accommodating hole 51 is arranged on the light supplementing module light outlet surface 55. A non-light-transmitting interval part 53 is arranged between the camera module light inlet surface 56 and the light supplementing module light outlet surface 55, which is used to block the light on the light supplementing module light outlet surface 55 from entering the camera module light inlet surface 56 and affecting the license plate recognition effect. In the embodiment, the non-light-transmitting interval part 53 is a non-light-transmitting protrusion 531, which is integrally formed with the shell 5, has a simple process and low cost. The non-light-transmitting protrusion 531 surrounds the camera module accommodating hole 52. The non-light-transmitting protrusion 531 separates the camera module light inlet surface 56 and the light supplementing module light outlet surface 55, so that the light from the light supplementing module light outlet surface 55 cannot enter the camera module light inlet surface 56, avoiding the interference of stray light and greatly improving the recognition effect of the camera module 2.

[0041] The non-light-transmitting protrusion 531 divides the front surface of the shell 5 into a first part and a second part. The first part covers the area of the camera module accommodating hole 52 and is provided with a first light-transmitting sheet 4, which can protect the camera module 2 arranged in the camera module accommodating hole 52 from being damaged and polluted, improve the light inlet amount, and improve the license plate recognition effect. The second part covers the area of the light supplementing module accommodating hole 51 and is provided with a second light-transmitting sheet 3, which can protect the light supplementing module 1 arranged in the light supplementing module accommodating hole 51 from being damaged and polluted, improve the light outlet amount, and further improve the license plate recognition effect. The first light-transmitting sheet 4 and the second light-transmitting sheet 3 are separated by the non-light-transmitting protrusion 531. The first light-transmitting sheet 4 is arranged inside the second light-transmitting sheet 3. The height of the non-light-transmitting protrusion 531 is greater than the thickness of the first light-transmitting sheet 4 and the second light-transmitting sheet 3, which can effectively prevent the light in the light supplementing module 1 area from entering the camera module 2 area and interfering with the license plate recognition.

[0042] Further, specifically as Figure 3As shown in the drawings, the size of the camera module accommodating hole 52 is smaller than the size of the non-light-transmitting protrusion 531, and the size of the camera module accommodating hole 52 is larger than the size of the camera module 2. The camera module accommodating hole 52 and the non-light-transmitting protrusion 531 form the camera module light entrance surface 56, which is used to support the installation of the first light-transmitting sheet 4. The size of the first light-transmitting sheet 4 matches the internal size of the non-light-transmitting protrusion 531. The first light-transmitting sheet 4 is clamped in the interior of the non-light-transmitting protrusion 531 and covers the area of the camera module light entrance surface 56. The periphery of the front surface of the shell 5 is provided with a frame 54. The non-light-transmitting protrusion 531 and the frame 54 form the light supplement module light exit surface 55. The height of the light supplement module light exit surface 55 is lower than that of the non-light-transmitting protrusion 531 and the frame 54. The light supplement module light exit surface 55 provides support for the second light-transmitting sheet 3. The second light-transmitting sheet 3 is clamped between the frame 54 and the non-light-transmitting protrusion 531 and covers the area of the light supplement module light exit surface 55.

[0043] Further, the second light-transmitting sheet 3 is provided with a through hole 41 corresponding to the position of the non-light-transmitting protrusion 531. The inner diameter of the through hole 41 matches the outer diameter of the non-light-transmitting protrusion 531. The through hole 41 is used to accommodate the non-light-transmitting protrusion 531 and the first light-transmitting sheet 4. The second light-transmitting sheet 3 is also provided with a light-shielding area 42 corresponding to the area of the light supplement module 1. The area of the light-shielding area 42 is larger than the area of the light supplement module accommodating hole 51, which can effectively shield the light of the light supplement module 1. The light-shielding area 42 can shield the light exit area of the light supplement module 1, avoiding interference with the driver's line of sight.

[0044] As shown in the drawings, Figure 2 and Figure 4 As shown in the drawings, the back of the camera module 2 is provided with a waterproof gasket 6. The waterproof gasket 6 is arranged in the interior of the bottom shell 7. The bottom shell 7 is also provided with a wire hole 8. The bottom shell 7 and the shell 5 are connected and fixed. The shell 5 is also provided with a waterproof light shield 9 on the side facing the vehicle, which can further improve the light supplement effect.

[0045] Embodiment 2:

[0046] As shown in the drawings, Figure 7 The difference between this embodiment and embodiment 1 is that the light supplement module 1 is arranged as four and surrounds the camera module 2, which can adapt to different lighting environments and achieve optimal light supplement effect. The light-shielding area 42 on the second light-transmitting sheet 3 also changes accordingly. In some embodiments, the number of light supplement modules 1 can also be changed to adopt a surrounding arrangement to adapt to different lighting environments, so that the light supplement module 1 does not interfere with the camera module 2, and the license plate recognition effect can be improved.

[0047] Example 3:

[0048] like Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the supplementary lighting module 1 is set to 9 modules and is arranged on one side of the camera module 2. The light-blocking area 42 on the second light-transmitting sheet 3 is also changed accordingly, which can adapt to different lighting environments and achieve the optimal supplementary lighting effect. In some embodiments, the number of supplementary lighting modules 1 can be changed and a single-sided arrangement can be adopted to adapt to different lighting environments, so that the supplementary lighting module 1 does not interfere with the camera module 2 and can improve the license plate recognition effect.

[0049] The above is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A license plate recognition camera device with light compensation and anti-glare, characterized in that, The camera module (2) and the light supplement module (1) are arranged in the shell (5), the camera module (2) is used for shooting license plate images, and the light supplement module (1) is used for illuminating license plates; the light supplement module (1) is arranged near the camera module (2); a first light transmission sheet (4) is arranged in the light supplement module (1), the first light transmission sheet (4) is provided with a light shielding area (42), and the light shielding area (42) is used for shielding light rays propagating from outside to inside of an outlight area of the light supplement module (1).

2. The license plate recognition camera device with light compensation and anti-glare according to claim 1, characterized in that, The light shielding area (42) is coated with one or more layers of translucent coating film.

3. The license plate recognition camera device with light compensation and anti-glare according to claim 1, characterized in that, The light shielding area (42) is attached with one or more layers of translucent film.

4. The license plate recognition camera device with light compensation and anti-glare according to claim 1, characterized in that, The substrate layer of the first light transmission sheet (4) at the light shielding area (42) is transparent, gray or brown.

5. The license plate recognition camera device with light compensation and anti-glare according to claim 1, characterized in that, The light supplement module (1) is provided with two light supplement modules, which are arranged on the two sides of the camera module (2).

6. The license plate recognition camera with light compensation and anti-glare according to claim 1, characterized in that, The light supplement module (1) is provided with a plurality of light supplement modules, which are arranged around the camera module (2).

7. The license plate recognition camera with light compensation and anti-glare according to claim 1, characterized in that, The light supplement module (1) is provided with a plurality of light supplement modules, which are arranged on one side of the camera module (2).

8. The license plate recognition camera with light compensation and anti-glare according to claim 1, characterized in that, The light entering surface (56) of the camera module and the light exiting surface (55) of the light supplement module are arranged on the same plane of the shell (5).

9. The license plate recognition camera with light compensation and anti-glare according to claim 1, characterized in that, The light entering surface (56) of the camera module and the light exiting surface (55) of the light supplement module are arranged in a stepped manner on one side of the shell (5); The light entering surface (56) of the camera module is outwardly protruded relative to the light exiting surface (55) of the light supplement module; or The light exiting surface (55) of the light supplement module is outwardly protruded relative to the light entering surface (56) of the camera module.

10. The license plate recognition camera device with light compensation and anti-glare according to claim 8, characterized in that, The light entering surface (56) of the camera module is provided with a second light transmission sheet (3), and a non-light transmission interval (53) is arranged between the first light transmission sheet (4) and the second light transmission sheet (3).

11. The license plate recognition camera with light compensation and anti-glare according to claim 10, characterized in that, The front surface of the shell (5) is provided with a camera module accommodating hole (52) and a light supplement module accommodating hole (51), and a non-light transmission protrusion (531) is arranged between the camera module accommodating hole (52) and the light supplement module accommodating hole (51) on the front surface of the shell (5), the non-light transmission protrusion (531) divides the front surface of the shell (5) into a first part and a second part, the first light transmission sheet (4) covers the first part of the shell (5), and the second light transmission sheet (3) covers the second part of the shell (5).

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