CN201749275U

CN201749275U - LED head lamp

Info

Publication number: CN201749275U
Application number: CN2010202785348U
Authority: CN
Inventors: 梁程; 郭炳文; 任毅
Original assignee: Beijing Xingguang Film and TV Equipment Technologies Co Ltd
Current assignee: Beijing Xingguang Film and TV Equipment Technologies Co Ltd
Priority date: 2010-08-02
Filing date: 2010-08-02
Publication date: 2011-02-16
Anticipated expiration: 2020-08-02

Abstract

The utility model relates to an LED head lamp, which belongs to a lighting apparatus. The LED head lamp comprises a front cover, a soft light board, a light source assembly, a lamp holder fixing device and a circuit control part, and is characterized in that an LED circuit board assembly is arranged in the light source assembly and comprises an LED light source and a circuit interface arranged on an LED circuit board, the LED light source comprises a high color temperature LED and a low color temperature LED regularly arranged and welded on the LED circuit board in sequence, and the LED circuit board is electrically connected with the circuit control part through the circuit interface. The utility model has the advantages of low power consumption, long service life, capability of producing less heat, controllable color temperature and brightness, overheat protection and easy and convenient installation. Moreover, the utility model can substitute the traditional head lamp with a halogen light source, is suitable for existing DV recorders and cameras, and can satisfy shooting demands of photographers in various environments. Therefore, the utility model has broad market prospects.

Description

A kind of LED head lamp

Technical field

The utility model belongs to ligthing paraphernalia, relates to a kind of LED head lamp, and it is used for video camera, camera.

Background technology

The press photographer is photo or the clear picture that makes shooting when interview, must on video camera, camera, be furnished with the head lamp, when running into insufficient light or night, must turn on the head lamp and be used for throwing light on, and light is transferred to the best requirement that just can satisfy journalist's work.At present, video camera, the head lamp that camera is commonly used mostly are old-fashioned aluminium shell Halogen lamp LED greatly, and its light source adopts based on halogen bulb.Shortcoming is: power consumption is big, the light source thermal value is big, temperature is high, serviceable life is short, and colour temperature and brightness are difficult to regulate.

LED is a kind of high efficiency light source, and its brightness can be controlled by changing working current.Rearrange a LED area source by the LED of several high colour temperatures and the LED of several low colour temperatures, the attitude body colour temperature that can regulate light fixture by the brightness ratio of regulating high colour temperature, low colour temperature LED.

Summary of the invention

The technical matters that solves:

A kind of LED head lamp is provided, can overcomes the deficiencies in the prior art, its power consumption is little, long service life, have overtemperature protection system and can regulate colour temperature and brightness.

The technical scheme that adopts:

A kind of LED head lamp, comprise protecgulum, softbox, light source assembly, lamp socket stationary installation and circuit control section, it is characterized in that: in the light source assembly, have by being contained in the led circuit board component that led light source on the led circuit plate and line interface are formed, led light source is made up of high colour temperature LED and low colour temperature LED regularly arranged and that be welded on the led circuit plate successively, and the led circuit plate is electrically connected by line interface and circuit control section.

Beneficial effect:

LED head lamp power consumption is little, and the head lamp that the employing LED of a 18W makes light source is equivalent to the illuminating effect of head lamp of the employing halogen lamp as light source of 100W; Low, the long service life of thermal value; Can control, regulate the colour temperature and the brightness of LED head lamp; Have overtemperature protection system, light fixture can extinguish automatically when light fixture was overheated, lighted automatically when temperature descends, and had protected light fixture; Wide input voltage range can use in DC10V～24V scope; Existing video camera, camera had suitability.

Description of drawings

Fig. 1, LED head lamp are disassembled the front shaft side figure;

Fig. 2, LED head lamp are disassembled back side shaft side figure;

Fig. 3, led circuit plate 13, circuit control panel 15 connection layout.

Embodiment

Further explanation in detail in conjunction with the accompanying drawings:

As shown in Figure 1, 2, 3, protecgulum 1, softbox 2 and light source assembly are arranged in order, and the led circuit board component in protecgulum 1, softbox 2 and the light source assembly 3 is fastening with screw each other, circuit control panel 15 is contained on the led circuit board component 3 by its circuit control box 5, on the led circuit plate 13 in the led circuit board component 3 led light source 4 is housed, this light source is made up of high colour temperature LED and low colour temperature LED regularly arranged and that be welded on the led circuit plate successively, and led circuit plate 13 is electrically connected by line interface 14 and circuit control panel 15 in the circuit control section; The structure that is used for the lamp socket stationary installation that is connected with video camera is, lamp socket fixture 10 is fixed in the middle part of the lower shoe of circuit control box 5, lamp socket left side part 8, the right part 12 usefulness securing members of lamp socket are fixed in the left and right sides of lamp socket fixture 10 respectively, and lamp socket fixing button 9 is contained on lamp socket left side part 8, the right part 12 of lamp socket in opposite directions turnably, in the symmetrically arranged groove 11.

Shown in Fig. 2,3, the structure of circuit control section is, has circuit control box 5, and circuit control panel 15 is housed in this box, on this plate electronic devices and components is housed; Brightness regulation button 6 and colour temperature adjusting knob 7, described two adjusting knobs all electrically connect with circuit control panel 15, have electrical interface part and the power interface 16 supporting with line interface 14 on the circuit control panel 15; Overtemperature protection system also is housed on the circuit control panel 15, and this device can make light fixture head lamp on overheated opportunity extinguish automatically; After recovering normally, temperature lights automatically again, thus the protection light fixture; Power interface 16 is used to connect the power supply of video camera and makes power supply as power supply or with the video camera reserve battery.

The control signal of the utility model LED head lamp is produced by Control Software (chip), controls high colour temperature LED by the PWM technology, low colour temperature LED.Brightness value according to calculating deposits Control Software (chip) register in, and the dutycycle of control PWM with this mean flow rate of controlling high and low colour temperature LED, reaches the purpose of control colour temperature and brightness.

During operation

brightness regulation button

6,4 brightness of control led light source increase and decrease according to setting the color temperature value ratio, up to the brightness maximum value or minimum value that reaches one group of led light source 4.Reach brilliance control with this, and guarantee that colour temperature is constant.

During operation colour temperature adjusting knob 7, the colour temperature of control led light source 4 is regulated led light source 4 high colour temperatures, low colour temperature and brightness ratio, according to the ratio value of the high colour temperature that deposits chip in and brightness, low colour temperature and brightness, be the scalable colour temperature, up to the limit of brightness that reaches one group of LED.Colour temperature can be regulated arbitrarily by 3200K～5600K.

General professional camera requires to have two grades of colour temperatures, one grade of 3200K, one grade is 5600K, when indoor shot is thrown light on halogen tungsten lamp or other low colour temperatures, video camera 3200K, if in outdoor shooting, the colour temperature that light source is higher than the video camera requirement will influence the picture effect that video camera is taken, just need to be added with on the light fixture colour temperature of the special calibration light source of color filter, reach the colour temperature that video camera needs.Lamp scalable brightness of a kind of LED head of present embodiment and colour temperature, thus can be according to the shooting needs brightness and the colour temperature of regulating LED head lamp

This LED head lamp, volume is light and handy, power consumption is little, and long service life is the head lamp of low-carbon (LC), environmental protection; Can accurately regulate colour temperature and brightness according to the shooting needs; Its control system has overheating protection to light fixture; It installs simple, the traditional halogen light source head lamp of convenient substituting, can be widely used in video camera, camera illumination use; Can satisfy press photographer's demand, market outlook are wide.

Claims

1. LED head lamp, comprise protecgulum, softbox, light source assembly, lamp socket stationary installation and circuit control section, it is characterized in that: in the light source assembly, have by being contained in the led circuit board component that led light source on the led circuit plate and line interface are formed, led light source is made up of high colour temperature LED and low colour temperature LED regularly arranged and that be welded on the led circuit plate successively, and the led circuit plate is electrically connected by line interface and circuit control section.

2. a kind of LED head lamp according to claim 1, it is characterized in that: the structure of lamp socket stationary installation is, lamp socket fixture (10) is fixed in the middle part of the lower shoe of circuit control box (5), lamp socket left side part (8), the right part of lamp socket (12) are fixed in the left and right sides of lamp socket fixture (10) respectively with securing member, and lamp socket fixing button (9) is contained on lamp socket left side part (8), the right part of lamp socket (12) in opposite directions turnably, in the symmetrically arranged groove (11).

3. a kind of LED head lamp according to claim 1 and 2 is characterized in that: the structure of circuit control section is, has circuit control box (5), and circuit control panel (15) is housed in this box, on this plate electronic devices and components is housed; Brightness regulation button (6) and colour temperature adjusting knob (7), described two adjusting knobs all electrically connect with circuit control panel (15), have on the circuit control panel (15) and supporting electrical interface part and the power interface (16) of line interface (14).

4. a kind of LED head lamp according to claim 3, it is characterized in that: described circuit control panel is equipped with overtemperature protection system on (15).