CN202486477U

CN202486477U - Photoflash for photography

Info

Publication number: CN202486477U
Application number: CN2012200955860U
Authority: CN
Inventors: 周耀波
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-14
Filing date: 2012-03-14
Publication date: 2012-10-10
Anticipated expiration: 2022-03-14

Abstract

The utility model discloses a photoflash for photography. The photoflash comprises a lamp body and a lamp holder connected with the front end of the lamp body. The lamp holder comprises a lamp cover and a lamp socket located in the rear end of the lamp cover, and a flash light source is arranged on the lamp socket and comprises an annular light tube light source. The photoflash for photography is characterized in that the flash light source further comprises a light-emitting diode (LED) light source provided with a high color temperature LED combination lightening chip and a low color temperature LED combination lightening chip, and the lamp body further is provided with a color temperature adjusting knob adjusting the color temperature of the LED light source and a luminance adjusting knob adjusting luminous flux of the LED light source through a control circuit. The LED light source replaces an ordinary bulb to serve as an auxiliary light source, and the LED chip is low in power, large in luminous flux, energy-saving when used and long in service life. Both the color temperature and the luminous flux of the LED chip can be adjusted through the control circuit so as to enable the luminous flux of light emitted by the auxiliary light source to be strong in adaptability, and different requirements in photography can be well met.

Description

A kind of photoflash

Technical field

The utility model relates to a kind of flashlamp of the usefulness of photographing, especially a kind of photoflash with two light sources.

Background technology

When people use camera or video camera to take; Be in night or the bad condition of ambient light effect through regular meeting; Usually need to be equipped with auxiliary appliance thus and strengthen lighting effects, and flashlamp is widely used in the photography art as a kind of common light reinforcing device.Along with the raising of user, to the also corresponding raising of the requirement of flashlamp in the photographic goods to the photographic effects requirement.

It is main light source that existing flashlamp majority still adopts flash lamp tube, is the version of secondary light source with common bulb such as incandescent lamp or Halogen lamp LED; Wherein flash lamp tube is to utilize the electron excitation inert gas and luminous light-pulse generator, and secondary light source is a continuous light source, and the shell of bulb is processed with hard glass, and electrode stem stem and coiled-coil filament are made with tungsten filament, and scribble the electronics powder.The secondary light source of this flashlamp, usually power is big, luminous flux is less, and power consumption is big and brightness is not enough, and the tungsten lamp that with power is 250W is an example, and its luminous flux is merely 3000 lumens; And colour temperature is low, luminous flux and colour temperature all can not be regulated; Can not regulate the different luminous fluxes of satisfying the demand according to the environment at scene; Serious colour cast appears in the low photo that then causes easily taking of colour temperature, does not reach desirable light requirement, thereby has influenced the quality of photography.

The utility model content

The utility model technical matters to be solved provides a kind of photoflash, can increase the range of choice of light source, and desirable light requirement is provided, and improves the quality of photography.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of photoflash; Comprise lamp body and the lamp holder that is connected said lamp body front end; Said lamp holder comprises lampshade and the lamp socket that is positioned at said lampshade rear end; Said lamp socket is provided with stroboscopic light sources, and said stroboscopic light sources comprises the light pipe light source of annular, it is characterized in that; Said stroboscopic light sources also comprises the led light source with high colour temperature LED illuminated in combination chip and low colour temperature LED illuminated in combination chip, and said lamp body also is provided with the colour temperature adjusting knob and the brightness regulation knob of regulating said led light source luminous flux of regulating said led light source colour temperature through control circuit.

Wherein, the array mode of said high colour temperature LED illuminated in combination chip and low colour temperature LED illuminated in combination chip is a plurality of LED luminescence chip SP compositions.

Said control circuit comprises constant current LED drive circuit; Shunt current; High colour temperature led drive circuit and low colour temperature led drive circuit; Said brightness regulation knob is connected to said constant current LED drive circuit; Said colour temperature adjusting knob and said constant current LED drive circuit are connected to said shunt current, and said shunt current is connected to said high colour temperature LED illuminated in combination chip and is connected to said low colour temperature LED illuminated in combination chip through said low colour temperature led drive circuit through said high colour temperature led drive circuit respectively.Thus, thus change the luminous flux of led light source through the output current that rotation brightness regulation knob can change constant current LED drive circuit; Can be through rotation colour temperature adjusting knob so that the electric current through high colour temperature LED illuminated in combination chip and said low colour temperature LED illuminated in combination chip take place to change relatively, thus the colour temperature behind the change mixed light.

The rear end circular perimeter of said lampshade is provided with lug, and interior formation of breach that can be inserted into the abutment ring of said lamp body front end removably connects.

Compared with prior art, the advantage of the utility model is: adopt led light source to replace common bulb as secondary light source, led chip power is low, luminous flux is big, and is comparatively energy-conservation and have the long life-span during use; The colour temperature of led chip and luminous flux all can be regulated through control circuit, and the luminous flux applicability that makes secondary light source send thus is stronger, the different needs in the time of can well satisfying photography.

Description of drawings

Fig. 1 is the structural representation of the flashlamp of the utility model;

Fig. 2 is the exploded structural representation of the flashlamp of the utility model;

Fig. 3 is the structural representation of the flashlamp of the utility model;

Fig. 4 is the control circuit system block diagram of the utility model.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Referring to Fig. 1-Fig. 3, a kind of photoflash comprises lamp holder 1, the lamp body 2 that is connected with lamp holder 1.

Lamp holder 1 comprises lampshade 11 and lamp socket 12, and wherein, lampshade 11 flares removably are connected the front end of lamp body 2.In the present embodiment, the rear end circular perimeter of lampshade 11 is provided with lug 111, be inserted in the breach 211 of abutment ring 21 of lamp body 2 front ends after, fixing through rotation with lamp body 2.

Lamp socket 12 is positioned at lampshade 11 rear ends, is fixed in the abutment ring 21, has constituted a light-source chamber with lampshade 11.Lamp socket 12 is provided with stroboscopic light sources, comprises light pipe light source 121 and led light source 122.Light pipe light source 121 is fixed on the lamp socket 12 ringwise, and led light source 122 is square, and is fixed on the centre of lamp socket 12 and is positioned at the annular extent of light pipe light source 121 of annular.

Led light source 122 comprises at least one group of LED illuminated in combination chip, and each group LED illuminated in combination chip comprises one group high colour temperature LED illuminated in combination chip 1221 and one group low colour temperature LED illuminated in combination chip 1222.Wherein, high colour temperature LED illuminated in combination chip 1221 is formed by series-parallel LED luminescence chip with low colour temperature LED illuminated in combination chip 1222, carries out parallel connection with LED luminescence chip after other are connected again after promptly a plurality of LED luminescence chips are connected.In the present embodiment, high colour temperature LED illuminated in combination chip 1221 obtains after being two groups of LED luminescence chip parallel connections after the series connection with low colour temperature LED illuminated in combination chip 1222.As light source, high effect, low-power consumption are example with the led light source 122 of 50W with led chip, and its luminous flux can reach the 4000-5000 lumen.

Lamp body 2 comprises abutment ring 21, lamp body shell 22 and the rear end cap 23 of front end.Have power interface 231, brightness regulation knob 232 and colour temperature adjusting knob 233 on the rear end cap 23, regulate the colour temperature and the brightness of led light source 122 through control circuit.

Referring to Fig. 4, be the colour temperature of the utility model and the system chart of luminous flux control circuit, control circuit comprises constant current LED drive circuit 41, shunt current 42, high colour temperature led drive circuit 43 and low colour temperature led drive circuit 44.Constant current LED drive circuit 41 is connected to shunt current 42; Thereby the electric current of constant current LED drive circuit 41 is divided into two-way; Then be connected to high colour temperature LED illuminated in combination chip 1221 through high colour temperature led drive circuit 43 respectively, and be connected to low colour temperature LED illuminated in combination chip 1222 through low colour temperature led drive circuit 44.Brightness regulation knob 232 is connected with constant current LED drive circuit 41, and colour temperature adjusting knob 233 is connected with shunt current 42.

During use, rotation brightness regulation knob 232 changes the output current of constant current LED drive circuit 41, thereby regulates the luminous flux of high colour temperature LED illuminated in combination chip 1221 and low colour temperature LED illuminated in combination chip 1222, to satisfy the demand of different photography environment.

And when need regulating colour temperature, rotation colour temperature adjusting knob 233 changes the two-way current ratio of shunt current 42 outputs; Because the electric current summation of shunt current 42 is constant; When being the electric current increase of high colour temperature led drive circuit 43, the electric current of low colour temperature led drive circuit 44 then reduces, and vice versa.If it is big to control the electric current of high colour temperature led drive circuit 43; The electric current of the low colour temperature led drive circuit 44 of control is little; The luminous flux of then high colour temperature led drive circuit 43 is big; The luminous flux of low colour temperature led drive circuit 44 is little, behind mixed light, presents the light of higher colour temperature, otherwise behind mixed light, presents the light of colour temperature on the low side.

The above is merely the preferred implementation of the utility model; Should be pointed out that for those of ordinary skill in the art, do not breaking away under the principle prerequisite of the utility model; Can also make various deformation and improvement, this also should be regarded as the protection domain of the utility model.

Claims

1. photoflash; Comprise lamp body (2) and be connected the lamp holder (1) of said lamp body (2) front end; Said lamp holder (1) comprises lampshade (11) and is positioned at the lamp socket (12) of said lampshade (11) rear end; Said lamp socket (12) is provided with stroboscopic light sources; Said stroboscopic light sources comprises the light pipe light source (121) of annular; It is characterized in that said stroboscopic light sources also comprises the led light source (122) with high colour temperature LED illuminated in combination chip (1221) and low colour temperature LED illuminated in combination chip (1222), said lamp body (2) also is provided with through control circuit and regulates the colour temperature adjusting knob (233) of said led light source (122) colour temperature and the brightness regulation knob (232) of adjusting said led light source (122) luminous flux.

2. photoflash as claimed in claim 1 is characterized in that, said high colour temperature LED illuminated in combination chip (1221) and low colour temperature LED illuminated in combination chip (1222) are a plurality of LED luminescence chip SP and form.

3. according to claim 1 or claim 2 photoflash; It is characterized in that; Said control circuit comprises constant current LED drive circuit (41); Shunt current (42); High colour temperature led drive circuit (43) and low colour temperature led drive circuit (44); Said brightness regulation knob (232) is connected to said constant current LED drive circuit (41), and said colour temperature adjusting knob (233) and said constant current LED drive circuit (41) are connected to said shunt current (42), and said shunt current (42) is connected to said high colour temperature LED illuminated in combination chip (1221) and is connected to said low colour temperature LED illuminated in combination chip (1222) through said low colour temperature led drive circuit (44) through said high colour temperature led drive circuit (43) respectively.

4. photoflash as claimed in claim 1 is characterized in that, the rear end circular perimeter of said lampshade (11) is provided with lug (111), and interior formation of breach (211) that can be inserted into the abutment ring (21) of said lamp body (2) front end removably connects.