CN205318076U - Light -emitting diode (LED) fill light - Google Patents

Abstract

The utility model provides a light -emitting diode (LED) fill light, including procapsid, back casing, the circuit control module who sets up in backshell internal portion with set up at the inside LED lamp of procapsid, the front end of procapsid is equipped with reflection of light cup and diaphanous window, the hou bi of procapsid after with the antetheca of casing be connected, circuit control module and LED lamp are connected, its characterized in that: the export of diaphanous window and the reflection of light cup setting that cooperatees, the last convex lens that are equipped with of diaphanous window, the power of LED lamp is 5 -50W, and the back wall of back casing is equipped with the fin. The beneficial effects of the utility model are that this light -emitting diode (LED) fill light is used for improving vehicle number plate recognition when road monitoring made a video recording night rates, reaches the requirement of intelligent license plate retrieval to image definition, power is low, and is energy -concerving and environment -protective, light is even soft, does not influence driver's sight, guarantees safe driving, and the security is high, the circuit control module heat dissipation is little to the influence of LED lamp, long service life.

Description

LED light supplement lamp

Technical field

This utility model belongs to monitoring camera field of illuminating device, especially relates to a kind of LED light supplement lamp.

Background technology

Present stage night movement vehicle license plate identification is mainly realized by bayonet socket camera, electronic police (essence is still bayonet socket camera) auxiliary flasher light light filling, but both the above equipment price is high, mounting process is complicated, it is not suitable for extensive universal, it is impossible to reach the requirement of safe city monitoring all standing. Common high-definition monitoring camera identifies that moving vehicle car plate relies primarily on normal bright light source light filling night, but cannot suppress vehicle strong illumination, solves picture conditions of streaking, and discrimination is extremely low. Tradition light compensation method adopts Halogen light (more than power 500W), LED white light (more than power 80W), all there is power consumption big, it is impossible to suppress vehicle high light, it is impossible to solving moving vehicle picture conditions of streaking, Car license recognition rate is low. Halogen lamp light color is unfavorable to Car license recognition, and discrimination is only capable of reaching 30%, and car plate definition is not high, and service life is short, and power consumption is high, and caloric value is big, starts moment monitoring systematic influence is big, easily causes equipment failure rate and raises. The above LED white light of power 80W is favourable to Car license recognition, but LED light is concentrated, skewness, light beam mid portion is brighter, substantially shades in both sides, can only identify light beam brighter position car plate, whole road surface can not be covered, vehicle high light cannot be suppressed, it is impossible to solving moving vehicle picture conditions of streaking, discrimination is lower than 50%, car plate definition is passable, but lamp from dazzling, easily causes vehicle accident, does not meet traffic safety code requirement.

Patent 201210185097.9 discloses a kind of traffic monitoring light-supplementary lamp, belongs to traffic monitoring photographic means field. it is provided with housing, circuit control module it is provided with in housing, circuit control module electrically connects with the flash lamp tube installed on a mirror, upper cover is fixed on housing, illuminator and flash lamp tube one strip luminous body that can launch strip light of composition, the shell end of the strip luminous body front portion that can launch strip light is fixed with a convex lens, it not only can control the spot size in light-illuminating region, and the more important thing is and the light intensity of hot spot different parts can be controlled, even if the intensity of light reflection being photographed the different parts of object is different, also can obtain being photographed the overall clear pictures of object.

Patent 201220369577.6 discloses a kind of LED light supplement lamp, described light compensating lamp includes LED packaging body, described LED packaging body is arranged in a housing, the front end of described housing is provided with reflection shield and optical transmission window, the upper and lower end face of described housing offers louvre, housing connects a cover body is set, built on stilts setting between this cover body and housing. This LED light supplement lamp reasonable in design, long service life and can use as light compensating lamp, which raises the work efficiency of LED light source, ensure that brightness, light efficiency and stroboscopic requirement simultaneously, accurately controlling and light filling effect of stroboscopic duration is improved so that it is go for traffic monitoring designing requirement when can effectively reduce assembly cost.

How to adopt a kind of light compensation method with low cost night, both can suppress vehicle strong illumination, may identify which again moving vehicle car plate, it it is the difficult problem in monitoring trade, so far not having successful case both at home and abroad, along with the intelligent good application of high-definition monitoring, social need is more urgent.

Utility model content

The purpose of this utility model is to provide a kind of for the light compensating lamp of vehicle license plate in common high-definition camera identification at night motion; improve car license plate recognition rate; reach the license plate intelligently retrieval requirement to image definition; light compensating lamp power is low simultaneously, and driver safety can also be protected while energy-conserving and environment-protective to drive.

The technical solution of the utility model is:

LED light supplement lamp, including procapsid, back casing, it is arranged on the circuit control module within back casing and is arranged on the LED within procapsid, the front end of procapsid is provided with reflector and optical transmission window, the rear wall of procapsid is connected with the antetheca of back casing, circuit control module is connected with LED, and described optical transmission window matches with the outlet of reflector setting, and described optical transmission window is provided with convex lens, the power of described LED is 5-50W, and the rear wall of back casing is provided with fin.

This utility model LED light supplement lamp adopts the convex lens matched with optical transmission window, and convex lens matches with reflector to concentrate the light dispersed emitted by LDE lamp becomes parallel rays, makes the light in range of exposures be evenly distributed, and brightness is consistent. This utility model people finds through big quantity research, and the LED adopting power to be 5-50W can either meet the requirement of number plate of vehicle identification with convex lens combination, again it can be avoided that light is excessively strong, causes picture conditions of streaking. And the source light that this utility model LED light supplement lamp provides is soft, driver is in driving procedure, and the light luminance that driver does not exist together with LED distance is consistent, will not affect driver's sight line due to light change, cause security incident. Circuit control module is meeting persistent fever in the process used, temperature too high service life that can affect whole LED, LED and circuit control module are divided among procapsid and back casing by this utility model, avoid the circuit control module heat radiation impact on LED, simultaneously, the rear wall of back casing is provided with fin, improves the radiating effect of back casing.

Preferably, the power of described LED is 10-30W.

It is furthermore preferred that the power of described LED is 20W.

The rear wall of described back casing is provided with multiple fin uniformly at intervals.

The sidewall of described back casing is provided with multiple fin uniformly at intervals.

The sidewall of back casing also is provided with fin, further increases the radiating effect of circuit control module.

Described back casing is cuboid, and the rear wall of described back casing is rectangle, and circuit control module is pasted onto on the rear wall of back casing by the cornerwise direction of back casing rear wall.

On the one hand, circuit control module is arranged on the rear wall of back casing, and the distance between circuit control module and LED is farthest, decreases the impact on LED of heat that circuit control module distributes. on the other hand, circuit control module is pasted onto on the rear wall of back casing by cornerwise direction, make the distance between each sidewall of circuit control module and back casing different, heat radiation along with circuit control module, the heat radiation of back casing sidewall is also different, the air themperature of one end sidewall that distance circuit control module is near is high, density is little, and it is low apart from one end sidewall air themperature that circuit control module is remote, density is big, during local air Density inhomogeneity, air will flow from the side that temperature is low as the side that temperature is high, accelerate the air flowing of back casing sidewall surfaces, further increase radiating effect.

Described optical transmission window is circular, described convex lens is diameter planoconvex lens identical with optical transmission window, the plane of described planoconvex lens is that light injects face, and the convex surface of described planoconvex lens is light outgoing plane, and the horizontal edge of described planoconvex lens is connected with the medial wall of optical transmission window.

This utility model adopts the interphase interaction of planoconvex lens, planoconvex lens and reflector, and light localization effects LED sent is good, and in the region that LED light supplement lamp is irradiated to, light is evenly distributed, and further increases the effect that light is concentrated.

The convex surface of described convex lens is hemisphere face or half ellipsoidal surface, described convex lens also includes the cylindrical sides perpendicular with plane and the ring surface with plane parallel, one end of cylindrical sides is adjacent with plane, the other end of cylindrical sides is connected with the cylindrical of ring surface, the inner circle of described ring surface is connected with convex surface, and described cylindrical sides is connected with the medial wall of optical transmission window.

The plane of cylindrical sides and ring surface and convex lens constitutes a cylinder with certain altitude being looped around bottom convex lens. This cylinder not only facilitates the installation of convex lens, makes the connection between convex lens and optical transmission window more firm, yet further enhances the light collecting effect of convex lens. Just there is the convex lens of routine, some light is likely to directly penetrate at the edge of convex lens, there is no light collecting effect, and a cylinder being integrally machined with convex lens it is provided with in the bottom of convex lens, part is mapped to the light of meniscus edge, through repeatedly refraction and the reflection of cylindrical side wall and ring surface, has been returned in reflector, through the reflection of reflector, again penetrate from other parts of convex lens.

Described ring surface inner circle radius is the 80-96% of ring surface exradius.

This utility model research worker finds through great many of experiments, when ring surface inner circle radius is the 80-96% of exradius, light collecting effect is best, can either directly penetrate from the edge of convex lens by preventing portion light splitter, again it can be avoided that the distance between ring surface inner circle and cylindrical is excessive, light is directed through ring surface injection.

The 1/2-1/3 that distance is planoconvex lens focal length between described convex lens plane and LED.

Described LED is regular polygon or circle, and the center of described LED is on the axis of convex lens.

The limit number of described regular polygon be more than or equal to 4, the drift angle of described regular polygon and the ring surface cylindrical of convex lens same with concave lens focus for the taper seat on summit.

So can be further ensured that by the light of convex lens be directional light, and uniform light is soft in irradiation area.

At the bottom of described reflector includes glass and wall of cup, it it is a circular flat at the bottom of described cup, wall of cup is a frustum of a cone sidewall, between the cup end and wall of cup small end, smooth excessiveness is connected, the outlet of reflector is the big end of wall of cup, the middle part at the cup end is provided with the hole matched with LED, and the outside diameter of described wall of cup is identical with the ring surface outside diameter of convex lens.

The light of LED injection reflects through the multiple reflections of reflective wall of cup and the repeatedly refraction of convex lens, and finally except the light penetrated either directly through convex lens, other major part light enter in convex lens after the reflection of reflector base plane. Reflector interacts with convex lens and further increases the effect that light is concentrated. LED is made also to be able to the effect reaching clearly to identify number plate of vehicle under relatively low power.

The front end of described procapsid is additionally provided with dark slide, and dark slide is connected with procapsid, and dark slide is provided with optical transmission window.

The light being arranged to guarantee LED injection of dark slide both passes through convex lens.

This utility model has the advantage that and has the benefit effect that

1, LED power is low, energy-conserving and environment-protective;

2, number plate of vehicle identification is clear, without picture conditions of streaking;

3, the light in range of exposures is evenly distributed, and brightness is consistent, does not affect driver's sight line, and safety is high;

4, LED is affected little by circuit control module heat radiation, long service life.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model

Fig. 2 is this utility model back casing structural representation

Fig. 3 is the side view of this utility model reflector

Fig. 4 is the top view of this utility model reflector

Fig. 5 is the side view of this utility model convex lens

Fig. 6 is the top view of this utility model convex lens

In figure:

11, procapsid 12, back casing 2, circuit control module 3, LED 4, electric wire

5, reflector 6, optical transmission window 7, convex lens 8, dark slide 121, fin

51, at the bottom of cup 52, wall of cup 521, wall of cup small end 522, the big end 71 of wall of cup, plane

72, convex surface 73, cylindrical sides 74, ring surface 741, ring surface inner circle 742, ring surface cylindrical

Detailed description of the invention

As shown in Figure 1, this utility model one LED light supplement lamp, including procapsid 11 and back casing 12, the rear wall of procapsid 12 is connected with the antetheca of back casing 12, the LED 3 that power is 5-50W it is provided with in the inside of procapsid 11, it is provided with circuit control module 2 in the inside of back casing 12, circuit control module 2 is connected by electric wire 4 with LED 3, reflector 5 and optical transmission window 6 it is provided with in the front end of procapsid 11, optical transmission window 6 matches with the outlet of reflector 5 setting, optical transmission window 6 is provided with convex lens 7, the rear wall of back casing 12 is provided with fin 121. LED 3 and circuit control module 2 are separately positioned in procapsid 11 and back casing 12, and on the rear wall of back casing 12, it is provided with fin 121 improves the radiating effect of circuit control module 2, avoid circuit control module 2 long-term heat release the service life of LED 3 is impacted, improve the service life of whole LED light supplement lamp.

As in figure 2 it is shown, the rear wall of back casing 12 is provided with multiple fin 121 uniformly at intervals.

Further, the sidewall of back casing 12 can also be provided with multiple fin 121 uniformly at intervals.

Back casing 12 is cuboid, and the rear wall of back casing 12 is rectangle, and circuit control module 2 is pasted onto on the rear wall of back casing 12 by the cornerwise direction of back casing 12 rear wall. on the one hand, circuit control module 2 is arranged on the rear wall of back casing 12, and the distance between circuit control module 2 and LED 3 is farthest, decreases the impact on LED 3 of heat that circuit control module 2 distributes. on the other hand, circuit control module 2 is pasted onto on the rear wall of back casing 12 by cornerwise direction, make the distance between circuit control module 2 from each sidewall of back casing 12 different, heat radiation along with circuit control module 2, the heat radiation of back casing 12 sidewall is also different, the air themperature of one end sidewall that distance circuit control module 2 is near is high, density is little, and it is low apart from one end sidewall air themperature that circuit control module 2 is remote, density is big, during local air Density inhomogeneity, air will flow from the side that temperature is low as the side that temperature is high, accelerate the air flowing of back casing 12 sidewall surfaces, further increase radiating effect.

As shown in Figure 3, Figure 4, reflector 5 include glass at the bottom of 51 and wall of cup 52, the cup end 51 is a circular flat, wall of cup 52 is a frustum of a cone sidewall, between the cup end 51 and wall of cup small end 521, smooth excessiveness is connected, the outlet of reflector 5 is the big end 522 of wall of cup, and the middle part of 51 at the bottom of cup is provided with the hole matched with LED 3. Wall of cup big end 522 diameter is identical with ring surface cylindrical 742 diameter.

As shown in Figure 5, Figure 6, convex lens 7 can be diameter and the identical planoconvex lens of optical transmission window 6. The plane 71 of planoconvex lens injects face for light, and the convex surface 72 of planoconvex lens is light outgoing plane, and the horizontal edge of planoconvex lens is connected with the medial wall of optical transmission window 6. The convex surface 72 of planoconvex lens can be hemisphere face, it is also possible to for half ellipsoidal surface.

A lighttight dark slide 8 can be provided with in the front end of procapsid 11, dark slide 8 is connected with procapsid 11, be provided with a circular optical transmission window 6 at the middle part of dark slide 8, the edge of convex lens 7 is connected with the medial wall of optical transmission window 6, is fixedly mounted on optical transmission window 6 by convex lens 7. Dark slide 8 and convex lens 7 can also be integrally machined molding by glass, be covered with photomask in the side within dark slide 8 housing 1.

Convex lens 7 can also include the cylindrical sides 73 perpendicular with plane 71 and the ring surface 74 paralleled with plane 71, one end of cylindrical sides 73 is adjacent with plane 71, the other end of cylindrical sides 73 is connected with ring surface cylindrical 742, ring surface inner circle 741 is connected with convex surface 72, and cylindrical sides 73 is connected with the medial wall of optical transmission window 6. Also being equivalent to bottom the planoconvex lens of hemispherical or semielliptical shape and be provided with a cylinder, cylindrical being integrally machined with planoconvex lens forms. The light that part can be penetrated by cylindrical sides 73 and ring surface 74 from planoconvex lens edge reflects through multiple reflections, to reflector, finally penetrates from the middle part of convex lens 7. Preferably, the radius of ring surface inner circle 741 is the 80-96% of ring surface cylindrical 742 radius.

The 1/2-1/3 that distance is planoconvex lens focal length between convex lens 7 plane 71 and LED 3. LED 3 is regular polygon or circle, and the center of LED 3 is on the axis of convex lens 7.

Preferably, LED 3 is regular polygon, the limit number of regular polygon be more than or equal to 4, the drift angle of described regular polygon and the ring surface cylindrical 742 of convex lens 7 same with convex lens 7 focus for the taper seat on summit.

The work process of this example: this utility model LED light supplement lamp is arranged on the monitoring crossbeam of road, after light penetrates from LED 3, multiple reflections or refraction through reflector 5 and convex lens 7, the light that LED 3 sends is gathered into parallel light beam, adjust the installation site of LED light supplement lamp and direction of illumination, make the most intense irradiation region of LED light supplement lamp shoot most clear area with video camera and overlap. Suppress the strong illumination of automobile front lamp by adjusting camera shutter, make the number plate of vehicle in monitored picture high-visible.

Above an embodiment of the present utility model is described in detail, but described content has been only preferred embodiment of the present utility model, it is impossible to be considered for limiting practical range of the present utility model. All equalizations made according to this utility model application range change and improvement etc., all should still belong within patent covering scope of the present utility model.

Claims (10)

1.LED light compensating lamp, including procapsid, back casing, it is arranged on the circuit control module within back casing and is arranged on the LED within procapsid, the front end of procapsid is provided with reflector and optical transmission window, the rear wall of procapsid is connected with the antetheca of back casing, circuit control module is connected with LED, it is characterized in that: described optical transmission window matches with the outlet of reflector setting, described optical transmission window is provided with convex lens, the power of described LED is 5-50W, and the rear wall of back casing is provided with fin.

2. LED light supplement lamp according to claim 1, it is characterised in that: the rear wall of described back casing is provided with multiple fin uniformly at intervals.

3. LED light supplement lamp according to claim 2, it is characterised in that: the sidewall of described back casing is provided with multiple fin uniformly at intervals.

4. LED light supplement lamp according to claim 2, it is characterised in that: described back casing is cuboid, and the rear wall of described back casing is rectangle, and circuit control module is pasted onto on the rear wall of back casing by the cornerwise direction of back casing rear wall.

5. the LED light supplement lamp according to claim 1-4 any one, it is characterized in that: described optical transmission window is circle, described convex lens is diameter planoconvex lens identical with optical transmission window, the plane of described planoconvex lens is that light injects face, the convex surface of planoconvex lens is light outgoing plane, and the horizontal edge of described planoconvex lens is connected with the medial wall of optical transmission window.

6. LED light supplement lamp according to claim 5, it is characterized in that: the convex surface of described convex lens is hemisphere face or half ellipsoidal surface, described convex lens also includes the cylindrical sides perpendicular with plane and the ring surface with plane parallel, one end of cylindrical sides is adjacent with plane, the other end of cylindrical sides is connected with ring surface cylindrical, described ring surface inner circle is connected with convex surface, and described cylindrical sides is connected with the medial wall of optical transmission window.

7. LED light supplement lamp according to claim 6, it is characterised in that: described ring surface inner circle radius is the 80-96% of ring surface exradius.

8. LED light supplement lamp according to claim 7, it is characterised in that: the 1/2-1/3 that distance is planoconvex lens focal length between described convex lens plane and LED.

9. LED light supplement lamp according to claim 8, it is characterised in that: described LED is regular polygon or circle, and the center of described LED is on the axis of convex lens.

10. LED light supplement lamp according to claim 9, it is characterized in that: at the bottom of described reflector includes glass and wall of cup, it it is a circular flat at the bottom of described cup, wall of cup is a frustum of a cone sidewall, between the cup end and wall of cup small end, smooth excessiveness is connected, the outlet of reflector is the big end of wall of cup, and the middle part at the bottom of cup is provided with the hole matched with LED, and described wall of cup outside diameter is identical with the ring surface outside diameter of convex lens.