CN110868511A

CN110868511A - Video camera

Info

Publication number: CN110868511A
Application number: CN201810988075.3A
Authority: CN
Inventors: 程广伟; 徐鹏; 杨坤; 沈辰弋
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2018-08-28
Filing date: 2018-08-28
Publication date: 2020-03-06
Anticipated expiration: 2038-08-28
Also published as: CN110868511B

Abstract

The invention discloses a camera, which comprises a light supplementing lamp device and a camera shell, wherein a light supplementing light source comprises a main light supplementing part and a color mixing light supplementing part, the light emitted by the main light supplementing part is in a first wave band, the light emitted by the color mixing light supplementing part is in a second wave band, and the light emitted by the color mixing light supplementing part is mixed with the light emitted by the main light supplementing part to form exposure compensation light. The light supplementing light source provided by the invention has the advantages that the wavelength of the main light supplementing part is adjusted in the first waveband, the recognition rate of an object to be shot is improved, the color-mixing light supplementing part is arranged on the basis of the main light supplementing part, and the color of mixed light mixed with the light emitted by the main light supplementing part is adjusted through the light emitted by the color-mixing light supplementing part, so that the color of exposure compensation light emitted by the light supplementing light source is softer, and glare on people is avoided.

Description

Video camera

Technical Field

The invention relates to the technical field of video monitoring, in particular to a camera.

Background

At present, in cameras for face recognition, vehicle recognition and night color images, because light rays in the night environment are seriously insufficient, most cameras usually use a white light lamp for light supplement, but light emitted by the light supplement lamp can cause certain glare to people, and because the face and the license plate can reflect light with certain wave bands, the recognition rate of the face and the license plate is influenced.

It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present invention to provide a camera that overcomes or at least mitigates at least one of the above-mentioned disadvantages of the prior art.

In order to achieve the above object, the present invention provides a camera, which includes a fill-in light device and a camera housing, wherein the fill-in light device includes a high beam light assembly and/or a low beam light assembly; the high beam assembly comprises a high beam, and the irradiation distance of the high beam is not more than 100 m; the low beam light assembly comprises a low beam light having an illumination distance of no more than 50 m; the high beam and the low beam comprise a main light supplement part and a color mixing light supplement part, wherein the light emitted by the main light supplement part is in a first wavelength band, the light emitted by the color mixing light supplement part is in a second wavelength band, and the light emitted by the color mixing light supplement part is mixed with the light emitted by the main light supplement part to form exposure compensation light; the main light supplementing part and the color-mixing light supplementing part are both LED chips, wherein the LED chip corresponding to the main light supplementing part and the LED chip corresponding to the color-mixing light supplementing part are packaged on a heat conducting plate group, the heat conducting plate group is installed on a light supplementing installation substrate, the heat conducting plate group comprises a heat conducting connecting layer and a heat radiating substrate, and the two LED chips are both fixed on the heat radiating substrate through the heat conducting connecting layer; or the LED chips corresponding to the main light supplementing parts and the LED chips corresponding to the color mixing light supplementing parts are alternately arranged on the light supplementing mounting substrate at intervals.

Further, the first wave band is 650 nm-850 nm, and the second wave band is 450 nm-620 nm or the wave band where the white light is located.

Further, the central wavelength of the light emitted by the main light supplement part is 730nm, and the central wavelength of the light emitted by the color mixing light supplement part is 580nm and/or 460 nm.

Furthermore, the light emitted by the color mixing and light supplementing part is white light, wherein the color temperature range of the white light is 2700k to 6500 k.

Further, the LED chip corresponding to the color-mixing light-supplementing part is a blue LED chip or an ultraviolet LED chip.

Furthermore, the power consumption of the LED chip corresponding to the main light supplement part is 0.5W-3W, and the power consumption of the LED chip corresponding to the color mixing light supplement part is 0.05W-1W.

Furthermore, the irradiation areas of the main light supplement part and the color mixture light supplement part are cone-shaped, light in an overlapping range formed by the two irradiation areas is the exposure compensation light, and the overlapping range is arranged close to the main light supplement part and the color mixture light supplement part.

Further, the main light supplement part and the color mixing light supplement part are connected in parallel or in series, wherein in the case of parallel connection: the main light supplementing part and the color mixing light supplementing part are respectively connected with the current control circuit outside the light supplementing light source through corresponding packaging circuit pins; in the case of series connection: and two ends of a series circuit formed by the main light supplementing part and the color mixing light supplementing part are connected with the current control circuit outside the light supplementing light source through a packaging circuit pin.

Further, the ratio of the current intensity input to the first light supplement chip to the current intensity input to the color mixing light supplement control circuit is controlled to be 1: 10-1: 200.

Further, the inside of camera shell is located to the high beam banks spare, the high beam banks spare still includes high beam lamp plate and high beam heating panel, four high beam circumference is located the four corners of high beam lamp plate leading flank, the high beam heating panel is located the trailing flank of high beam lamp plate.

Furthermore, the dipped headlight assembly is arranged outside the camera shell, the dipped headlight assembly also comprises an external shell, the shape of the top surface of the external shell is matched with the shape of the bottom surface of the camera shell, and the front end surface of the external shell does not protrude out of the front end surface of the camera shell; the external hanging shell comprises a lower shell, an upper cover and a light-transmitting plate, the upper cover is arranged at the top opening of the lower shell in a sealing mode, the light-transmitting plate is arranged at the front opening of the lower shell in a sealing mode, an assembly formed by the low beam lamp, the low beam lamp panel and the low beam heat dissipation plate is arranged in a cavity of the external hanging shell, the upper cover is connected to the bottom surface of the camera shell through a connecting plate, a wire connected to the low beam lamp panel penetrates through wire passing through holes of the upper cover and the connecting plate to be connected to the inside of the camera shell, the upper cover is arranged at the top opening of the lower shell in a sealing mode through a sealing ring, and the light-transmitting; establish passing light lamp plate and passing light heating panel in the external casing, the leading flank of passing light lamp plate establishes two passing light and two high beams, the trailing flank of passing light lamp plate is established the passing light heating panel, the passing light is warm light, two warm light are transversely separated along the camera and are established between two high beams.

The light supplementing light source provided by the invention has the advantages that the wavelength of the main light supplementing part is adjusted in the first waveband, the recognition rate of an object to be shot is improved, the color-mixing light supplementing part is arranged on the basis of the main light supplementing part, and the color of mixed light mixed with the light emitted by the main light supplementing part is adjusted through the light emitted by the color-mixing light supplementing part, so that the color of exposure compensation light emitted by the light supplementing light source is softer, and glare on people is avoided.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a camera provided by the present invention;

fig. 2 is a schematic structural diagram of a fill-in light source of the package structure shown in fig. 1 according to an embodiment;

fig. 3 is a schematic structural diagram of a fill-in light source according to another embodiment of the package structure shown in fig. 1;

FIG. 4 is a side view of the fill-in light source of the package structure shown in FIG. 3;

fig. 5 is a schematic structural diagram of a light supplement light source according to another embodiment of the package structure shown in fig. 1;

fig. 6 is a schematic circuit diagram of the fill-in light source shown in fig. 2 and 3;

fig. 7 is a schematic circuit diagram of another circuit structure of the fill-in light source shown in fig. 2 and 3;

fig. 8 is a schematic diagram of a main fill-in light control circuit in the fill-in light source shown in fig. 1;

fig. 9 is a schematic diagram of a color mixing and fill light control circuit in the fill light source shown in fig. 1;

FIG. 10 is an exploded view of the camera provided by the present invention;

FIG. 11 is a schematic view of the overall external structure of the assembled camera of FIG. 10;

fig. 12 is an exploded view of the high beam assembly of fig. 10;

fig. 13 is an exploded view of the low beam assembly of fig. 10;

figure 14 is an exploded view of the low beam lamp assembly of figure 13;

fig. 15 is a schematic front view of the light supplement device shown in fig. 7;

fig. 16 is a schematic view of the irradiation of light emitted by the low beam, high beam and warm white light.

Detailed Description

In the drawings, the same or similar reference numerals are used to denote the same or similar elements or elements having the same or similar functions. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the description of the present invention, the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention.

As shown in fig. 1, the light supplement lamp provided in this embodiment includes a light supplement light source 1, a lens 2, a light supplement mounting substrate 3, and a current control circuit, wherein: the light supplementing light source 1 is arranged on one side or two sides of the lens 4 of the camera and used for supplementing light to the object to be shot under the condition of insufficient ambient light. Lens 2 is arranged on the light-emitting path of the light-compensating light source 1 to achieve the effect of condensing light through lens 2, so that the utilization rate and the light intensity of the light-compensating light source 1 are improved. The lens 2 generally adopts a total internal reflection lens, and can effectively adjust the propagation path of light rays emitted by the light supplementing light source, so that the light quantity of the light source can be reasonably and greatly utilized, and the light emitting angle of the lens can be met through the design of the lens. The lens 2 is fixedly mounted to the housing of the front end assembly 5 of the camera using glue dispensing. The current control circuit controls the magnitude of current transmitted to the light supplementing light source so as to control the luminous intensity of the light supplementing light source. The fill-in light source 1 is mounted on the front end module 5 of the camera through a fill-in mounting substrate 3, and the specific implementation manner of the fill-in mounting substrate 3 will be described in detail in the following embodiments.

In one embodiment, the fill light source 1 is a combination of a main fill light part 11 and a color-mixing fill light part 12, the light emitted from the main fill light part 11 is in a first wavelength band, the light emitted from the color-mixing fill light part 12 is in a second wavelength band, and the light emitted from the color-mixing fill light part 12 is mixed with the light emitted from the main fill light part 11 to form exposure compensation light. The light supplementing light source of the embodiment improves the recognition rate of a to-be-shot object by adjusting the wavelength of the main light supplementing part in the first wavelength band, and the embodiment also adjusts the color of exposure compensation light mixed with the light emitted by the main light supplementing part by arranging the color mixing light supplementing part on the basis of the main light supplementing part, so that the color of the mixed light emitted by the light supplementing light source is softer, and glare to a person is avoided.

Preferably, the irradiation areas of the main light supplement part 11 and the color mixture light supplement part 12 are cone-shaped, the light in the overlapping range formed by the irradiation area of the main light supplement part 11 and the irradiation area of the color mixture light supplement part 12 is the exposure compensation light, and the overlapping range is arranged adjacent to the main light supplement part 11 and the color mixture light supplement part 12.

Those of ordinary skill in the art will recognize that: the complexion of the human face is generally divided into yellow, black and brown, the license plate generally adopts white characters with blue bottom, and the human face and the license plate with different complexion have reflection attributes with different degrees to spectra with different wavelengths.

One set of experimental data shows: the human face with different skin colors has the highest reflectivity when the wavelength is 650nm, and the human face reflectivity is gradually reduced after 650 nm. The higher the reflectivity, the more the light quantity received by the camera chip under the same condition, the easier the identification, so the light source with the wavelength larger than 650nm is selected.

Another set of experimental data shows: the white font of the license plate has higher spectral reflectivity in the whole range of 400 nm-800 nm, while the blue bottom has higher spectral reflectivity near 450nm of central wavelength, and has lower reflectivity in the waveband of 600 nm-800 nm, and the reflectivity begins to rise from 800 nm. Therefore, in order to better distinguish the license plate number, it is necessary to make the contrast of the ground color of the license plate and the reflection of the font part large. The light supplementing light source between 600nm and 800nm is used, the reflectance of the ground color of the license plate is low, the reflectance of the font is high, the contrast of the ground color and the font is the highest, and the light supplementing light source in the waveband range is used for supplementing light to a camera for identifying the license plate, so that the identification of the license plate number is facilitated.

Therefore, the embodiment integrates the recognition requirements of the human face and the license plate, and the wave band of the light supplement light source 1 is selected to be 650 nm-850 nm, so that the dazzling (glare) condition of the existing white light lamp can be improved, and the recognition of the human face and the license plate can be improved.

The spectrum having a wavelength band of 650nm to 850nm is mainly concentrated in the red region. In practical application, when the light source in the wave band is used on a road, a driver or a pedestrian is easy to mistakenly consider the red light in the traffic light when watching the light source at a distance, and the pedestrian is easily misled.

According to the theory of colorimetry, the color of the current light can be changed by mixing light of other colors into a light source of one color. In order to avoid that people mistake the supplementary lighting light source 1 with the waveband between 650nm and 850nm as a red light in a traffic light, the embodiment adopts a color mixing supplementary lighting mode. And the first wave band of the light emitted by the main light supplement part 11 is set to 650-850 nm, the light emitted by the color mixing light supplement part 12 is mixed with the light emitted by the main light supplement part 11, and the red light emitted by the main light supplement part 11 can be covered by the color mixing light supplement mode, so that misguiding of a user is avoided, and the requirement of clearly identifying the human face and the license plate can be met.

In order to prevent the fill light source 1 from being displayed in red, the color of light emitted from the color mixing fill light part 12 may be white, and white light is mixed into red light, so that the red light emitted from red light can be lightened or lightened, and can be distinguished from red light emitted from the existing red traffic light. The color-mixing light supplement part 12 can emit white light, for example: the blue light chip laser fluorescent powder can emit white light, and the ultraviolet light laser fluorescent powder also emits white light.

The number of the color mixing light supplement parts 12 may be 1 or more (for example, 2). The color temperature of the color mixing and light supplementing part 12 is between 2700k and 6500 k. The main light supplement part 11 is combined with the color mixing light supplement part 12 which emits white light, so that the red exposure phenomenon can be removed, glare is not generated, and the identification success rate of the camera is favorably improved. In practical application, the light supplement lamp provided by this embodiment mainly has two application modes: the other mode is a face recognition mode and a license plate recognition mode, a 650-850 nm main light supplement part 11 is used as a light supplement light source of monitoring equipment, the power range of the main light supplement part 11 is 0.5-3W, the power range of the color mixing light supplement part 12 is 0.05-1W, and white light power consumption is low. The other mode is that under the night full-color mode, the 650-850 nm main supplementary lighting part 11 can be turned off, and the mixed color supplementary lighting part 12 is used as a supplementary lighting source of the camera. The embodiment can realize multiple functions such as a night color mode, a face recognition mode, a license plate recognition mode and the like in the same camera.

In one embodiment, the color of the light emitted from the mixed color fill light source 12 may be other colors, such as light emitting in the wavelength range of 450nm to 620nm, so that the fill light source 1 does not display red. Specifically, for example: such as yellow light with a central wavelength of 580nm, the color of the resulting mixed light is orange yellow. Also for example: the central wavelength of the light emitted from the color mixing light supplement part 12 is 460nm blue light, and the color of the light mixed by the color mixing light supplement part 12 and the primary light supplement part 11 with the waveband of 650nm to 850nm is purple light or partial blue light. Human eyes have different sensitivities to light with different colors, the light sensitivity coefficient of the human eyes to red light with the wavelength of 730nm is 0.00052, and the light sensitivity coefficient of the human eyes to blue light with the wavelength of 460nm is 0.06, so that the purple light and the blue light can be mixed only by mixing the blue light with small power, and the recognition of a license plate is not influenced.

As shown in fig. 2, in an embodiment, the main light supplement part 11 and the color mixing light supplement part 12 are both LED chips, and the light supplement light source 1 adopts a package structure.

For example: the LED chips corresponding to the main light supplement part 11 and the LED chips corresponding to the color-mixing light supplement part 12 are packaged on a heat conduction plate group, the heat conduction plate group is installed on the light supplement installation substrate, the heat conduction plate group comprises a heat conduction connection layer (such as a eutectic layer or a silver adhesive layer) 6 and a heat dissipation substrate 7, and the LED chips corresponding to the main light supplement part 11 and the LED chips corresponding to the color-mixing light supplement part 12 are fixed on the heat dissipation substrate 7 through the heat conduction connection layer 6. Wherein, the effect of heat conduction articulamentum 6 mainly reflects in: the main fill light portion 11 and the color mixing fill light portion 12 are connected to the heat dissipation substrate 7, and the heat dissipation substrate 7 is soldered to the fill light mounting substrate 3.

The thermally conductive connection layer 6 has a heat conducting capacity, which enhances the heat dissipation capacity of the device. The heat dissipation substrate 7 can be a ceramic substrate, which has excellent heat dissipation capability and high heat resistance, and can effectively reduce the working temperature of the light supplement light source 1 when being used as the heat dissipation substrates of the main light supplement part 11 and the color mixing light supplement part 12.

The light supplement mounting substrate 3 is an aluminum substrate, and the aluminum substrate is fixedly mounted on a front end component 5 of the camera through screws. At this time, the heat emitted in the light emitting process of the main light supplement part 11 and the color mixing light supplement part 12 is conducted from the heat dissipation substrate 7 to the light supplement mounting substrate 3, then conducted to the front end assembly 5 of the camera through the light supplement mounting substrate 3, and finally dissipated to the external environment of the camera through the shell of the front end assembly 5.

In one embodiment, as shown in fig. 3 and 4, the main light supplement part 11 and the color-mixing light supplement part 12 are both LED chips, and the light supplement light source 1 is a package structure, wherein the main light supplement parts 11 and the color-mixing light supplement parts 12 are alternately arranged on the substrate at intervals. That is, the package structure may include one main light supplement chip with a power of 3W and a plurality of color mixing light supplement chips with a power of 0.05W. The packaging structure also comprises a plurality of main light supplement chips with the power of 1.5W and a plurality of color mixing light supplement chips with the power of 0.05W, wherein the main light supplement chips and the color mixing light supplement chips are alternately arranged on the substrate at intervals. The package structure of this embodiment adopts a cob (chip on board) form, the substrate is the aforementioned aluminum substrate 3, and the main light supplement chip and the color mixing light supplement chip at this time are directly electrically connected to the aluminum substrate 3, thereby omitting the silver paste and the package layer in the conventional package.

In one embodiment, as shown in fig. 5, the color mixing light supplement part 12 is a phosphor layer 16 coated outside the main light supplement part 11. For example, the color of the light emitted by the main light supplement part 11 is red, the type of the phosphor layer 16 may be selected, so that the phosphor layer 16 is excited by the red light emitted by the main light supplement part 11 to emit white phosphor, the amount of the phosphor layer 16 is controlled, so that the phosphor layer 16 only emits a small amount of white light, the white phosphor is mixed with the red light emitted by the main light supplement part 11, and the color of the exposure compensation light formed in this way can make the human eye slightly see or not see the light emitted by the main light supplement part, thereby also playing a role in reducing red exposure.

In one embodiment, in the package structure, the main light supplement part 11 and the color mixing light supplement part 12 may be connected in parallel as shown in fig. 6, in which case, the main light supplement part 11 has a first package circuit pin 13, and the color mixing light supplement part 12 has a second package circuit pin 14. The main light supplement part 11 and the color mixing light supplement part 12 are respectively connected with a current control circuit outside the light supplement light source 1 through corresponding packaging circuit pins, namely, the main light supplement part 11 is connected with the current control circuit outside the light supplement light source 1 through a first packaging circuit pin 13; the color-mixing light-supplementing part 12 is connected with a current control circuit outside the light-supplementing light source 1 through a second packaging circuit pin 14.

In one embodiment, the main light supplement part 11 and the color-mixing light supplement part 12 may also be connected in series as shown in fig. 7, and in this case, both ends of a series circuit formed by the main light supplement part 11 and the color-mixing light supplement part 12 are connected to a current control circuit outside the light supplement light source 1 through the third package circuit pin 15.

In one embodiment, the current control circuit includes a main fill light control circuit 8 and a color mixture fill light control circuit 9, wherein the main fill light control circuit 8 controls the magnitude of the current intensity input to the main fill light part 11 in a constant current driving manner, and the current intensity is hereinafter referred to as a main fill light current intensity to control the light emission intensity of the main fill light part 11. The color mixing light supplement control circuit 9 also controls the magnitude of the current intensity input to the color mixing light supplement section 12, hereinafter referred to as the color mixing light supplement current intensity, in a constant current driving manner to control the light emission intensity of the color mixing light supplement section 12. The ratio of the main light supplement current intensity to the mixed color light supplement current intensity is controlled to be 1: 10-1: 200, and practice proves that the ratio range can not cause the white light to be too dazzling, and can cover the red light.

Fig. 8 shows an implementation manner of the main light supplement control circuit 8, and as shown in fig. 8, the main light supplement control circuit 8 has a main light supplement input terminal IR and a main light supplement output terminal, IRLEDO + is an anode of the main light supplement output terminal, IRLEDO-is a cathode of the main light supplement output terminal, and an anode IRLEDO + and a cathode IRLEDO-of the main light supplement output terminal are used for connecting a current input terminal of the main light supplement part 11.

The main supplementary lighting control circuit 8 includes a first constant current driving chip UG1, and the model of the first constant current driving chip UG1 may be SYHV121 BC. In the figure, pin 1 of the first constant current driving chip UG1 is a switch output pin, pin 2 is a ground loop pin, pin 3 is a test pin, pin 4 is a chip operation enable pin, pin 5 is a chip input voltage pin, and pin 6 is an LED current detection pin.

Pin 1 is connected to the main fill light input IR through a diode D16, and a diode D16 is a freewheeling diode of the asynchronous DCDC chip. Foot 6 connects main light filling input IR through resistance R247, and resistance R247 is used for solving the resistance station of radiation problem. The pin 4 is connected to a PWM pin MAINLED CTL A1 of the external controller through a resistor R246, and the magnitude of the current output by the main fill light control circuit 8 is controlled by the PWM signal transmitted to the pin 4 by the external controller. Resistor R246 is used as a resistor station to solve the radiation problem. Pin 5 is connected with main supplementary lighting input IR, and pin 2 and pin 3 are all grounded. A current limiting circuit 81 is arranged between the pin 6 and the main light supplement input end IR, and the pin 6 and the current limiting circuit 81 are grounded. The current limiting circuit 81 is used to control the maximum value of the current flowing through the main fill light part 11. Specifically, the current limiting circuit 81 includes a first resistor R249 and a second resistor R248 connected in parallel, and the resistance value of the first resistor R249 and the second resistor R248 after being connected in parallel is 0.125 Ω. The intensity of the current flowing through the main light supplement part 11 is 0.1/0.125(a) ═ 0.8A. The main supplementary lighting input terminal IR is grounded through the first filter circuit 82, and the first filter circuit 82 includes a first capacitor C273 and a second capacitor C270 connected in parallel, and filters the main supplementary lighting input terminal IR to prevent the input voltage from being unstable. Pin 1 is connected via a first energy storage capacitor L2 to an output IRLEDO-. A current stabilizing circuit 83 is arranged between the output ends IRLEDO + and IRLEDO-. The current stabilizing circuit 83 includes a third capacitor C274 and a fourth capacitor C269 connected in parallel, and is configured to suppress current ripples of the main light supplement part 11, and ensure that the current of the main light supplement part 11 is stable.

Fig. 9 shows an implementation manner of the color-mixing light-supplementing control circuit 9, as shown in fig. 9, the color-mixing light-supplementing control circuit 9 has a color-mixing light-supplementing input terminal VIN and a color-mixing light-supplementing output terminal, LED + is an anode of the color-mixing light-supplementing output terminal, LED-is a cathode of the color-mixing light-supplementing output terminal, and the anode LED + and the cathode LED-of the color-mixing light-supplementing output terminal are used for connecting a current input terminal of the color-mixing light-supplementing part 12.

The color mixing light supplement control circuit 9 comprises a second constant current driving chip UW2, and the model of the second constant current driving chip UW2 may be TPS 54201. In the figure, pin 1 of the second constant current driver chip UW2 is a ground loop pin, pin 2 is a switch output pin, pin 3 is a power input pin, pin 4 is an output current feedback pin, pin 5 is a constant current driver chip mode selection pin, pin 6 is a boost pin, and pin 6 controls the SW output signal.

A second filter circuit 91 is arranged between the color-mixing light-supplementing input terminal VIN and the ground, and the second filter circuit 91 comprises a third capacitor C7 and a fourth capacitor C8 which are connected in parallel, so as to filter the color-mixing light-supplementing input terminal VIN and prevent the input voltage from being unstable. Pin 2 is connected to output LED + via a second energy storage capacitor L3. Pin 6 is connected between pin 2 and the second energy storage capacitor L3 through a boost capacitor C6. The boost capacitor C6 has a boosting effect and controls the upper tube of the color-mixing light-supplementing control circuit 9 to be opened. Pin 3 is connected to the color-mixing light-compensating input terminal VIN. Pin 4 is connected to the output LED-via resistor R3, and pin 4 is also connected to ground via capacitor C9. The resistor R3 and the capacitor C9 form an RC filter circuit, and form a pole with the pin 4, so that the bandwidth and the stability of a loop are ensured. The pin 5 is connected with a PWM pin of the external controller, and the PWM signal transmitted to the pin 5 by the external controller controls the magnitude of the current output by the main light supplement control circuit 8. The duty ratio of the PWM determines the magnitude of the output current, and in this embodiment, the current of the warm white light is 1mA, and the duty ratio of the PWM is 1%.

And a capacitor C10 is bridged between the positive LED + of the color-mixing light supplement output end and the negative LED-of the color-mixing light supplement output end, and a capacitor C10 is used for stabilizing the output current intensity of the color-mixing light supplement, reducing current fluctuation, ensuring that the color-mixing light supplement part 12 works in a standard constant current mode as much as possible, and preventing the color-mixing light supplement part 12 from flickering. The output end LED is grounded through a resistor R4, the resistor R4 is used for detecting the current flowing through the color mixing light supplement part 12, the current intensity flowing through the color mixing light supplement part 12 is guaranteed to be a set current value, and the current intensity I flowing through the color mixing light supplement part 12 is 0.2V/R4.

It should be noted that, when the main fill-in light part 11 and the color mixing fill-in light part 12 are connected in parallel as shown in fig. 6, the first package circuit pin 13 of the package is connected to the main fill-in light output terminals IRLEDO +, IRLEDO-of the main fill-in light control circuit 8. And, the second package circuit pin 14 of the package is connected to the color-mixing light-filling output end LED + and LED-of the color-mixing light-filling control circuit 9.

When the main fill-in light part 11 and the color mixing fill-in light part 12 are connected in series as shown in fig. 7, the third package circuit pin 15 of the package is connected to the main fill-in light output end IRLEDO +, IRLEDO-of the main fill-in light control circuit 8.

In one embodiment, the main light supplement part 11 selects light with a wavelength of 700nm to 760nm, and the main light supplement part 11 with a wavelength of 700nm to 760nm emits infrared light with a red color. The color-mixing light-supplementing part 12 adopts warm white light with the color temperature of 3000K, and the color is yellow, so that the color of light obtained after the 3000K warm white light is mixed with the main light-supplementing part 11 with the wave band of 700-760nm is warm white and is yellow, the color can solve the dazzling problem caused by pure white light on one hand, and can solve the red exposure problem of pure 700-760nm wave band after color-mixing light-supplementing on the other hand, and the red light at the intersection can be prevented from being mistaken. In addition, the color-mixing light supplementing mode is beneficial to improving the contrast ratio under the infrared light supplementing effect of the human face and the license plate. Preferably, the current intensity input to the main light supplement part 11 by the main light supplement control circuit 8 is 800mA, and the current intensity input to 3000K warm white light by the color mixing light supplement control circuit 9 is 5-10 mA.

As shown in fig. 10 to 16, the camera provided in this embodiment includes a lens assembly 1 ', a fill-in light device 2 ', and a camera housing 3 ', wherein: the mounting position of the lens assembly 1' is not changed compared to the prior art. The light supplement lamp device 2 'is arranged adjacent to the lens assembly 1'. Under the darker condition of the ambient light that the object of waiting to make a video recording is located, light filling lamp device 2 'is opened, and the light that light filling lamp device 2' sent shines through lens on waiting to make a video recording the object, can strengthen like this and treat the illumination intensity of the illumination environment of making a video recording the object.

The fill light device 2' includes a high beam assembly 21 and a low beam assembly 22. Wherein:

the high beam lamp subassembly 21 includes high beam lamp 211, high beam lamp plate 212 and high beam heating panel 213, and the leading flank of high beam lamp plate 212 is located to high beam lamp 211, specifically, and high beam lamp 211 includes lamp pearl and lens, and on the lamp pearl was connected to high beam lamp plate 212 through the welded mode, lens were through screwed connection to high beam lamp plate 212. The material of high beam lamp plate 212 is aluminium, and it both is the structure carrier of lamp pearl and lens, also has better heat conduction and heat dissipation function. The high beam heat sink 213 is provided on the rear side of the high beam lamp panel 212.

The low beam lamp assembly 22 comprises a low beam lamp 221, a low beam lamp panel 222 and a low beam heat dissipation plate 223, the low beam lamp 221 is arranged on the front side face of the low beam lamp panel 222, specifically, the low beam lamp 221 comprises a lamp bead and a lens, the lamp bead is connected to the low beam lamp panel 222 in a welding mode, and the lens is connected to the low beam lamp panel 222 through screws. The material of passing light lamp plate 222 is aluminium, and it both is the structure carrier of lamp pearl and lens, also has better heat conduction and heat dissipation function. The low beam heat dissipation plate 223 is provided on the rear side surface of the low beam lamp panel 222.

The direction in which the light is emitted by the lamp of the present embodiment is considered to be "forward", whereas it is considered to be "backward".

As shown in fig. 16, in one embodiment, the exit beams of the low beam lamp 221 and the high beam lamp 211 are both conically diffused, the cone angle of the low beam lamp 221 is large, the irradiation distance is short, and the irradiation range is large; on the contrary, the high beam 211 has a small cone angle, a long irradiation distance and a small irradiation range. The low beam assembly 22 provides a short range of illumination and a small range of illumination. Therefore, with the camera provided in this embodiment, the user can select between the high beam light assembly 21 and the low beam light assembly 22 for use according to the distance between the object to be photographed and the camera, thereby being beneficial to photographing a clearer image in a dark environment.

Preferably, the low beam lamp 221 irradiates a distance of not more than 50 m. That is, the dipped headlight 221 captures a human face at a distance of about 10m, and for other objects in general, at a distance of about 50 m. The irradiation distance of the high beam 211 is not more than 100 m. That is, the high beam 211 captures a human face at a distance of about 20m, and for other objects, at a distance of about 50 m.

On the one hand, for user management and independent control, and on the other hand, subject to the spatial constraints of the camera housing 3', the high beam assembly 21 and the low beam assembly 22 are arranged separately. Such as: the distance of the high beam is far, the range is small, the light-emitting cone angle is not easy to be blocked by the structural component, therefore, the high beam light component 21 is arranged inside the camera shell 3 ', the light-emitting cone angle of the low beam light is large, the low beam light component 22 is easily blocked, and therefore, the low beam light component 22 is arranged outside the camera shell 3'.

As shown in fig. 12 and 13, the low beam lamps 221 are two in number and are spaced apart from each other in the lateral direction of the camera on the low beam lamp panel 222, and the low beam assembly 22 further includes two warm light lamps 224, and the two warm light lamps 224 are spaced apart from each other in the lateral direction of the camera between the two low beam lamps 221. The warm light 224 is softer, and the addition of the warm light 224 can avoid dazzling under direct vision.

As shown in fig. 10 and 11, in one embodiment, the low beam assembly 22 further includes an external shell 225, and the shape of the top surface of the external shell 225 is matched with the shape of the bottom surface of the camera housing 3', which is favorable for the overall appearance and appearance. The front end surface of the external shell 225 does not protrude from the front end surface of the camera housing 3', so that rainwater cannot be deposited on the external shell 225 in a rainwater weather, the waterproof of the dipped headlight assembly 22 is facilitated, and the normal use of other components of the existing camera is not influenced.

As shown in fig. 13, in one embodiment, the external casing 225 includes a lower casing 2251, an upper cover 2254, and a light-transmitting plate 2252, the upper cover 2254 is sealed to the top opening of the lower casing 2251 by a sealing ring 2253, the light-transmitting plate 2252 is sealed to the front opening of the lower casing 2251, and the assembly formed by the low beam lamp 221, the low beam lamp plate 222, and the low beam heat dissipation plate 223 is disposed in the cavity of the external casing 225. The upper cover 2254 is connected to the bottom surface of the camera housing 3 'by the connection plate 2255, and the wire connected to the low beam light panel 222 is connected to the inside of the camera housing 3' through the wire passage through hole 226 of the upper cover 2254 and the connection plate 2255, and when assembling the low beam light assembly 22, it is necessary to insert the connection wire in advance and to pass the connection wire out of the wire passage through hole 226. The transparent plate 2252 is made of transparent glass, and the periphery thereof seals the front opening of the lower case 2251 by dispensing. The material of the connection plate 2255 is waterproof EVA. This approach may ensure that the low beam assembly 22 is rated for protection to IP 66.

In one embodiment, the high beam lamp panel 212 has a through hole 215 for the lens assembly 1 'to pass through, a high beam lamp 211 is respectively disposed around four corners of the through hole 215, and a light-blocking ring is disposed between the lens assembly 1' and the four high beam lamps 211 to prevent light leakage.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Those of ordinary skill in the art will understand that: modifications can be made to the technical solutions described in the foregoing embodiments, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A camera comprises a light supplement lamp device and a camera shell, and is characterized in that,

the supplementary lighting device comprises a high beam light assembly and/or a low beam light assembly;

the high beam assembly comprises a high beam, and the irradiation distance of the high beam is not more than 100 m;

the low beam light assembly comprises a low beam light having an illumination distance of no more than 50 m;

the high beam and the low beam comprise a main light supplement part and a color mixing light supplement part, wherein the light emitted by the main light supplement part is in a first wavelength band, the light emitted by the color mixing light supplement part is in a second wavelength band, and the light emitted by the color mixing light supplement part is mixed with the light emitted by the main light supplement part to form exposure compensation light;

the main light supplement part and the color mixing light supplement part are both LED chips, wherein,

the LED chips corresponding to the main light supplement part and the color-mixing light supplement part are packaged on a heat conduction plate group, the heat conduction plate group is installed on the light supplement installation substrate, the heat conduction plate group comprises a heat conduction connecting layer and a heat dissipation substrate, and the two LED chips are fixed on the heat dissipation substrate through the heat conduction connecting layer; or

And the LED chips corresponding to the main light supplementing parts and the LED chips corresponding to the color mixing light supplementing parts are alternately arranged on the light supplementing mounting substrate at intervals.

2. The camera of claim 1, wherein the first wavelength band is 650nm to 850nm, the second wavelength band is 450nm to 620nm, or a wavelength band in which white light is present.

3. The camera as claimed in claim 1, wherein the main fill light portion emits light having a central wavelength of 730nm, and the mixed color fill light portion emits light having a central wavelength of 580nm and/or 460 nm.

4. The camera as claimed in claim 1, wherein the light emitted from the color mixing light supplement part is white light, and the color temperature of the white light is in a range of 2700k to 6500 k.

5. The camera as claimed in claim 1, wherein the LED chip corresponding to the color-mixing light-compensating part is a blue LED chip or an ultraviolet LED chip.

6. The camera as claimed in claim 1, wherein the power consumption of the LED chip corresponding to the main fill-in light part is 0.5W to 3W, and the power consumption of the LED chip corresponding to the color-mixing fill-in light part is 0.05W to 1W.

7. A light supplement light source as claimed in claim 1, wherein the irradiation regions of the main light supplement portion and the color mixing light supplement portion are cone-shaped, the light in the overlapping range formed by the two irradiation regions is the exposure compensation light, and the overlapping range is disposed adjacent to the main light supplement portion and the color mixing light supplement portion.

8. The camera as claimed in claim 1, wherein the main fill-in light part and the color mixing fill-in light part are connected in parallel or in series, wherein in case of parallel connection: the main light supplementing part and the color mixing light supplementing part are respectively connected with the current control circuit outside the light supplementing light source through corresponding packaging circuit pins; in the case of series connection: and two ends of a series circuit formed by the main light supplementing part and the color mixing light supplementing part are connected with the current control circuit outside the light supplementing light source through a packaging circuit pin.

9. The camera according to claim 8, wherein a ratio of the intensity of the current inputted to the first fill-in chip to the intensity of the current inputted to the color-mixing fill-in control circuit is controlled to be in a range of 1:10 to 1: 200.

10. The camera according to any one of claims 1 to 9, wherein the high beam lamp assembly is disposed inside the camera housing, the high beam lamp assembly further includes a high beam lamp panel and high beam heat dissipation plates, four high beams are circumferentially disposed at four corners of a front side surface of the high beam lamp panel, and the high beam heat dissipation plates are disposed at a rear side surface of the high beam lamp panel.

11. The camera according to any one of claims 1 to 9, characterized in that the dipped headlight assembly (21) is provided outside the camera housing, the dipped headlight assembly further comprising an external housing having a top surface with a shape adapted to the bottom surface of the camera housing, the front end surface not protruding beyond the front end surface of the camera housing; the external hanging shell comprises a lower shell, an upper cover and a light-transmitting plate, the upper cover is arranged at the top opening of the lower shell in a sealing mode, the light-transmitting plate is arranged at the front opening of the lower shell in a sealing mode, an assembly formed by the low beam lamp, the low beam lamp panel and the low beam heat dissipation plate is arranged in a cavity of the external hanging shell, the upper cover is connected to the bottom surface of the camera shell through a connecting plate, a wire connected to the low beam lamp panel penetrates through wire passing through holes of the upper cover and the connecting plate to be connected to the inside of the camera shell, the upper cover is arranged at the top opening of the lower shell in a sealing mode through a sealing ring, and the light-transmitting;

establish passing light lamp plate and passing light heating panel in the external casing, the leading flank of passing light lamp plate establishes two passing light and two high beams, the trailing flank of passing light lamp plate is established the passing light heating panel, the passing light is warm light, two warm light are transversely separated along the camera and are established between two high beams.