CN205318075U - Light -emitting diode (LED) fill light - Google Patents

Abstract

The utility model provides a light -emitting diode (LED) fill light, including the procapsid, back casing, the setting is at the circuit control module and the LED lamp of setting in procapsid inside of the internal portion of backshell, the front end of procapsid is equipped with reflection of light cup and diaphanous window, the hou bi of procapsid is connected with the antetheca of back casing, circuit control module and LED lamp are connected, the spool is drawn to fixed being equipped with on the lateral wall of back casing, the one end of lead -out wire is passed and is drawn the spool and be connected with circuit control module, the backshell lateral wall is outside draws and is equipped with lock nut on the spool, the inside lead -out wire outside of tubes cladding of backshell lateral wall has close adhesive layer. 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, back housing seal is effectual, and the environment 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, 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, the sidewall of back casing is fixed with extraction spool, the part that extraction spool is positioned at outside rear shell side wall is provided with external screw thread, one end of lead-out wire is connected through drawing spool with circuit control module, spool of drawing outside rear shell side wall is provided with and draws the locking nut that spool external screw thread matches, the extraction spool of back cover interior is coated with sealant layer.

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. Sealant layer ensure that the sealing effectiveness of back casing, it is to avoid rainwater enters and inside back casing, circuit control module caused damage.

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

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

The inside of described extraction spool is provided with sealing-plug, and described sealing-plug is the taper type with central through hole, and the outside diameter of sealing-plug is more than or equal to the internal diameter drawing spool, and the end diameter of sealing-plug is equal to the diameter of lead-out wire.

LED light supplement lamp uses for a long time out of doors, and rocking easily occurs due to wind in lead-out wire, and lead-out wire rocks for a long time and can cause that the sealing of sealant layer is destroyed, and affects the service life of LED light supplement lamp. Adopt sealing-plug that lead-out wire can be positioned at the part drawn within spool to fix firmly, it is to avoid lead-out wire rocks and causes that sealing is destroyed. Meanwhile, locking nut improves sealing effectiveness within sealing-plug pressing can also enter into extraction spool further.

The outside diameter of the sealing-plug internal diameter more than extraction spool and the internal diameter less than locking nut.

The length of described sealing-plug is positioned at the length of back casing sidewall exterior section more than drawing spool.

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, back casing good sealing effect, LED is affected by environment little, long service life.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model

Fig. 2 is this utility model pinout connector explosive view

Fig. 3 is this utility model plug construction schematic diagram

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

Fig. 5 is the top view of this utility model reflector

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

Fig. 7 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, draw spool

122, locking nut 123, lead-out wire 124, sealant layer 125, sealing-plug 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, is provided with convex lens 7 on optical transmission window 6. Being provided with extraction string holes on the sidewall of back casing 12, be fixed with extraction spool 121 drawing in string holes, the one end drawing spool 121 is positioned at the outside of back casing 12 sidewall and is provided with external screw thread, and the other end drawing spool 121 is positioned at the inside of back casing 12 sidewall. One end of lead-out wire 123 is connected through drawing spool 121 with the circuit control module 2 within back casing 12, is provided with, in the one end drawing spool 121, the locking nut 122 matched with external screw thread, is coated with sealant layer 124 at the other end drawing spool 121. Lead-out wire 123 is fixed in extraction spool 121 by sealant layer 124, and back casing is had sealing effectiveness, can avoid outdoor environment that the service life of LED light supplement lamp is impacted, extend the service life of whole LED light supplement lamp.

As in figure 2 it is shown, the inside drawing spool 121 is provided with sealing-plug 125. As it is shown on figure 3, sealing-plug 125 is the taper type with central through hole, the outside diameter of sealing-plug 125 is more than or equal to the internal diameter drawing spool 121, and the end diameter of sealing-plug 125 is equal to the diameter of lead-out wire 123.

Further, the outside diameter of sealing-plug 125 can more than drawing the internal diameter of spool 121 and less than the internal diameter of locking nut 122. So ensure that the locking nut 122 compression effect to sealing-plug 125, make lead-out wire 123 be secured firmly in the through hole of sealing-plug 125, it is to avoid lead-out wire rocks, and improve sealing effectiveness.

The length of sealing-plug 125 is positioned at the length of back casing 12 sidewall exterior section more than drawing spool 121.

As shown in Figure 4, Figure 5, 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 6, Figure 7, 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, the sidewall of back casing is fixed with extraction spool, the part that extraction spool is positioned at outside rear shell side wall is provided with external screw thread, one end of lead-out wire is connected through drawing spool with circuit control module, spool of drawing outside rear shell side wall is provided with and draws the locking nut that spool external screw thread matches, the extraction spool of back cover interior is coated with sealant layer.

2. LED light supplement lamp according to claim 1, it is characterized in that: the inside of described extraction spool is provided with sealing-plug, described sealing-plug is the taper type with central through hole, the outside diameter of sealing-plug is more than or equal to the internal diameter drawing spool, and the end diameter of sealing-plug is equal to the diameter of lead-out wire.

3. LED light supplement lamp according to claim 2, it is characterised in that: the outside diameter of the described sealing-plug internal diameter more than extraction spool and the internal diameter less than locking nut.

4. LED light supplement lamp according to claim 2, it is characterised in that: the length of described sealing-plug is positioned at the length of back casing sidewall exterior section more than drawing spool.

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.