KR20170055783A - Studio strobes and led lighting device - Google Patents

Abstract

The present invention relates to an LED module employing an air cooling method and a studio strobes in which light emission characteristics are made close to natural light by using the module, wherein a plurality of LED chips are arranged in a plane, A plate-shaped LED module having a hole formed therein; A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light; The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the rim of the plate type LED module and a plurality of air outlets formed on the rear surface; A blowing fan disposed between the plate-shaped LED module and the case having the blowing port to blow air from the air inlet to blow air into the blowing hole through a lifetime formed between the chip and the chip; A capacitor portion for storing charge for flash light discharge; And a control unit for controlling lighting of the LED module in synchronization with shooting of the camera.

Description

STUDIO STROBES AND LED LIGHTING DEVICE [0002]

The present invention relates to a studio strobe, and more particularly, to an LED module employing an air cooling method and a studio strobe and an LED lighting device using the module to make luminescent characteristics close to natural light.

Strobe is a device that illuminates a scene by generating a flash of instantaneous light, and refers to a device that illuminates a subject or its surroundings when shooting a camera. Generally, it is used to illuminate a scene momentarily at low light intensity, but it is usually used to brighten relative dark areas within a certain distance. The strobes have a short duration of light emission and the color temperature is close to 5500K, which is the sunlight color temperature during the daytime, and the light quantity and the light quality are uniform and can be repeatedly used.

Strobes are mainly built-in strobe built in a small digital camera, and have a mounting base for pushing and fixing the camera on a hot-shoe on the camera, which is also called a hot-shoe strobe A clip-on type strobe, a handel-mounted strobe with a handle with a built-in battery pack, and a studio sticker that is connected to a separate power pack or power source.

The principle of the strobe is to charge the current to a capacitor and momentarily discharge it to flow a large current to produce light requiring high output. In the past, Xenon lamps were used mainly as a light source, in which a pair of electrodes was placed in a quartz tube sealed with Xenon gas to generate a discharge to emit light. The Xenon lamp produces light close to natural light but has a poor light efficiency in which the energy consumed is converted into light and is difficult to illuminate the area to be illuminated uniformly due to the characteristic of the lamp type point light source, Because of the large power, it takes a lot of charging time. Above all, there is a problem that ultraviolet rays and infrared rays are emitted to the human body and are not free from the controversy of harmfulness.

In order to solve such a problem, a studio strobe using an LED module as a lamp has been proposed. However, heat generation of the LED light source is a problem. Korean Patent No. 10-1178430 discloses a technology relating to a heat radiator for radiating divergent heat of an LED module in a 'camera strobe device'. However, it is difficult to solve the heat generation problem of the LED light source with the heat sink as described above.

Prior Art 1: Korea Patent No. 1178430 (strobe device for camera)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a studio stroboscope device capable of emitting light heat in an LED module with low power consumption, high efficiency, The present invention has been made in view of the above problems.

According to an aspect of the present invention, there is provided a display device including: a planar LED module having a plurality of LED chips arranged in a plane; A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light; The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the edge of the plate-like LED module and a plurality of air outlets formed on the back surface; A fan disposed in the case between the plate-shaped LED module and a rear surface of a case having the tuyere for introducing air from the air inlet port to send air to the tuyere through a hole formed between the chip and the chip; A capacitor portion for storing charge for flash light discharge; And a control unit for controlling the lighting of the LED module in synchronization with the photographing of the camera, wherein the control unit comprises: a continuous power control unit for controlling the power supply so that the LED module maintains the continuous light; An electric charge accumulation control unit for controlling the LED module to accumulate electric charge capable of generating flash light; And a discharge control unit for controlling discharge of the LED module so as to emit flash light.

The present invention also provides a studio stroboscope in which copper, aluminum, ceramic, or silver is plated for heat conduction in the holes formed between the chip and the chip of the plate type LED module.

The present invention also provides a studio stroboscope, wherein the case has a hexahedral shape, wherein a corner portion having four side surfaces is formed as a curved surface, and the air inlet port is formed in the longitudinal direction on the four side surfaces of the hexahedral shape.

The present invention also provides a studio stroboscope wherein the case has a cylindrical shape and the air inlet is formed in the cylindrical shape on the side surface in the longitudinal direction.

The present invention further provides a studio strobe, wherein the control unit further comprises a light quantity volume for adjusting the light quantity of the continuous light and the flash of the LED module, respectively.

The control unit may further include a temperature sensor for measuring the temperature of the LED module and for interrupting the power supplied to the continuous light or the flash when the temperature of the module exceeds a predetermined reference value, Lt; / RTI >

The control unit may further include a light amount volume adjusting the color temperature and the light amount of the LED module, respectively.

The present invention also provides a light emitting device comprising: a planar LED module in which a plurality of LED chips are arranged in a plane, and a hole is formed between the chip and the chip; A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light; The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the edge of the plate-like LED module and a plurality of air outlets formed on the back surface; A fan disposed in the case between the plate-shaped LED module and a rear surface of a case having the tuyere for introducing air from the air inlet port to send air to the tuyere through a hole formed between the chip and the chip; A capacitor portion for storing charge for flash light discharge; And a controller for controlling lighting of the LED module in synchronization with shooting of a camera, wherein copper, aluminum, ceramic, or silver is plated for heat conduction in the hole formed between the chip and the chip of the plate type LED module, And the air inlet is formed in the longitudinal direction on the four side surfaces or the front surface of the hexahedron so as to be formed between the chip and the chip of the plate type LED module And the control unit further comprises a light amount volume adjusting the color temperature and the light amount of the LED module, respectively.

According to the present invention having such a configuration, since an LED module consuming low power is used as a light source, the efficiency is high while the power consumption is low, and the charging speed for supplying a large current at the time of photographing a camera is fast.

In addition, since an LED module capable of combining various monochromatic lights can be used as a light source, it is possible to irradiate not only white light but also various color light, and has a semi-permanent lifetime and is economical. Harmless to human body because there is no ultraviolet ray or infrared ray in divergent light, It is possible to provide various shooting environments because the range of the synchronization speed is large.

In particular, the lifetime and stability of the LED can be increased by using an LED lighting device and a studio stroboscope that can rapidly discharge the heat radiated from the LED module through the air inlet, the hole of the LED module, the blower, and the air outlet .

1 is an external perspective view of a studio strobe according to an embodiment of the present invention.
FIG. 2 is an external perspective view of a studio stroboscope according to an embodiment of the present invention, viewed from direction A in FIG. 1;
3 is an enlarged view of a section of a studio strobe according to an embodiment of the present invention.
4 is an enlarged view of the LED module shown in Fig.
5 is a block diagram showing a configuration of a controller for controlling an LED module employed in an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments are illustrative and not intended to limit the invention in any way.

Spatially relative terms such as "front," " back ", "side ", and the like are used to easily describe one element or component and other elements or components . Spatially relative terms should be understood to include, in addition to the directions shown in the drawings, terms that include different orientations of the device during use or operation. For example, when reversing a member shown in the figures, a member described as "below" or "below" another member may be placed "above" another member. Thus, the exemplary term "below" can include both downward and upward directions. The members can also be oriented in different directions, so that spatially relative terms can be interpreted according to orientation. For example, "lateral direction" may be interpreted as "vertical direction"

The thickness and size of each member in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size and area of each component do not entirely reflect the actual size or area.

Further, in the embodiments, the angles and directions mentioned in the process of describing the structure of the present invention are based on those shown in the drawings. In the description of the structure constituting the present invention in the specification, reference points and positional relationship with respect to angles are not explicitly referred to, reference is made to the relevant drawings.

FIG. 1 is an external perspective view of a studio stroboscope according to an embodiment of the present invention, FIG. 2 is an external perspective view of a studio stroboscope according to an embodiment of the present invention seen from a direction A in FIG. 1, FIG. 4 is an enlarged view of the LED module shown in FIG. 3. FIG.

The studio strobe according to an embodiment of the present invention includes a case 10, an LED module 14, blowers 22 and 24, and a control unit 40.

The case 10 is configured in such a manner that a plurality of LED chips are arranged in a plane and a plate-shaped LED module 14 and blowers 22 and 24 having holes formed between the chip and the chip are incorporated. In an embodiment of the present invention, the case 10 may have a square box shape or a hexahedron shape, but the corner portions to which the side surfaces are connected may be curved, and the size thereof may be varied as needed.

In an embodiment of the present invention, a diffusion plate for diffusing light may be disposed on a front surface of the plane on which the LED chips are arranged. In addition, the case may be a part or the whole of the front surface of the diffusing plate, a surface surrounding the edge of the plate-like LED module parallel to the surface, and a surface facing the opposite surface of the plate of the plate- A plurality of air inlets are formed in a side surface between the front surface and the edge of the plate type LED module and a plurality of air outlets are formed in the rear surface. In an embodiment of the present invention, a fan is positioned inside the case between the plate-shaped LED module and the back surface of the case in which the tuyere is formed, so that air is introduced from the air inlet, The air can be blown out through the blower. In an embodiment of the present invention, the LED module is connected to a capacitor unit (not shown) for accumulating electric charges for instantaneous discharge.

The case according to another embodiment of the present invention may be formed in a cylindrical shape, and an air inlet may be formed in the cylindrical side surface in the longitudinal direction.

An air inlet (12) is formed on one side of the case (10). In other words, the air inlet 12 is formed on the four side surfaces which are in contact with the edge portion formed by the curved surface of the hexahedral case 10 in a strip shape. For example, the air inlet 12 may be formed in the form of a slot having an elongated shape. In one embodiment of the invention, air can be introduced into the interior of the device through the air inlet 12.

An air blowing port 26 is formed on the back surface of the case 10. The air blowing port 26 may be formed with a plurality of holes having mutually different lengths. Air from the outside of the apparatus of the present invention is introduced into the interior through the air inlet 12 and the air introduced into the interior of the apparatus passes through the holes formed in the plate type LED module 14 and the air blowing openings 26 through the blowers 22, As shown in FIG.

On the other hand, a diffusion plate 5 is formed on the front surface of the plate-shaped LED module opposite to the back surface of the case 10 where the air outlet 26 is formed. Here, the diffusion plate 5 is disposed on the front surface of the plate-shaped LED module 14 on which the LED chips are arranged to protect the LED module 14 and diffuse the light emitted from the LED module 14.

The plate-shaped LED module 14 includes a printed circuit board (PCB) 16 and a plurality of LED chips 18 mounted on the printed circuit board 16.

The LED chip 18 may use a monochromatic LED capable of emitting light of various colors using a chip of high luminance. Here, a monochromatic LED is an LED having a combination of R (red), G (green), and B (blue) elements emitting three primary colors of light, and can emit light of various colors including white light. When making white light, rather than combining the three primary colors of light, a method of producing a white light by the effect of fluorescence by using a fluorescent material as a light emitting element emitting monochromatic light is the most used, and an LED chip having a fluorescent material lens is usually used It is called high color rendering white light LED chip. It is also possible to implement an LED strobe having a color temperature varying function by combining LEDs having different color temperatures.

In particular, a plurality of holes 20 are formed in the plate-shaped LED module serving also as the printed circuit board 16. The hole 20 is formed in the periphery of the LED chip 18 mounted on the printed circuit board 16. For example, the hole 20 may be formed between the LED chip 18 and the LED chip 18. The hole 20 allows the air introduced into the air inlet 12 to move to the blowers 22 and 24 and the air outlet 26 side via the plate-like LED module 14. In FIG. 4, the shape of the hole 20 is circular, but any shape may be used as long as air can pass through it. In an embodiment of the present invention, the hole 20 is plated with a high thermal conductive material, so that when the air passes through the narrow hole, the air flow is accelerated and the plating material on the wall surface of the hole takes away the heat of the surface to maximize the cooling efficiency . In one embodiment of the present invention, the plating material may be copper, aluminum, ceramics, silver, or the like.

Here, the diffusion plate 5 and the plate-like LED module 14 may be detachably coupled to the case 10. The LED module 14 can be easily repaired or replaced if damage or malfunction occurs in the diffusion plate 5 or the LED module 14 due to detachable coupling. The diffuser plate may constitute all or part of the front surface of the case.

Of course, the structure in which the diffuser plate 5 and the LED module 14 are detachably coupled to the case 10 is not shown in detail, but if it is known to a person with ordinary skill, . For example, a structure may be formed on the front surface of the case 10 to be in contact with the diffusion plate 5 so that one side of the diffusion plate 5 may be fitted or detached. The LED module 14 may be detachably coupled to the case 10 in a fastening manner using bolts and nuts.

The blowers 22 and 24 allow the air introduced into the air inlet 12 to be blown into the air outlet 26 through the hole 20 of the LED module 14. For example, the blowers 22 and 24 include an impeller 22 and a motor 24. In other words, the blowers 22 and 24 rotate the impeller 22 in one direction in accordance with the rotational motion of the motor 24 so that air introduced into the air inlet 12 flows through the holes 20 of the LED module 14 And the air that has escaped through the hole 20 of the LED module 14 is sent to the air blowing port 26 side.

The blowers 22 and 24 may be detachably coupled to the case 10. Detachably coupled, it is possible to easily repair or replace the fan 22 or 24 if the fan 22 or 24 is damaged or broken.

Of course, the structure in which the blowers 22 and 24 are detachably coupled to the case 10 is not shown in detail, but it will be appreciated that those skilled in the art will be able to grasp it sufficiently by a well-known technique. For example, the blowers 22 and 24 may be detachably coupled to the case 10 in a fastening manner using bolts and nuts.

The studio strobe according to the embodiment of the present invention configured as described above can be said to be air-cooled. That is, in the present invention, in order to quickly and efficiently discharge the heat radiated from the LED module 14, a separate heat radiator (aluminum material with high thermal conductivity) and a cooling means (a circulating pipe for circulating the refrigerant, And the air blowing out port 26 are used to emit from the LED module 14 without using the air inlet 12, the hole 20, the blowers 22 and 24, and the air blowing port 26, The heat can be released to the outside.

5 is a block diagram showing the configuration of a control unit for controlling the LED module employed in the embodiment of the present invention.

The control unit 40 may be installed on the outer surface of the case 10 or separately from the case 10. In one embodiment of the present invention, the control unit 40 controls the on and off of the continuous light and / or the flash of the LED module 14 in synchronization with the photographing of the camera. The control unit 40 includes a sustain power control unit 30, a charge accumulation control unit 32, a discharge control unit 34, and a lighting control unit 36. [

The sustain power control unit 30 may control the power supply and lighting control unit 36 so that the LED module 14 emits light of general brightness instead of flash light. The sustainable power control unit 30 can control the power supplied from the battery or the commercial power source to be constant voltage or constant current.

The charge accumulation control unit 32 controls the charge stored in the capacitor to be supplied from the power supply unit and controls the charge accumulation amount under the control of the lighting control unit 36. [ The discharge control section 34 can discharge the charged power which is tuned at the time of camera shooting. The power source controlling the discharging control unit 34 to discharge is combined with the power source controlled by the sustaining power source control unit 30 so that a large current is instantaneously supplied to the LED module 14 at the time of photographing to light up in a large amount of light. In an embodiment of the present invention, a transistor (BJT, FET, IGBT), a thyristor, a triac, or the like may be used as the switching element of the discharge controller 34.

The lighting control unit 36 can control the power connection including the on and off states of the sustain power control unit 30, the charge storage control unit 32, and the discharge control unit 34. [ 5, the control unit 40 may further include an operation button for a user's operation and a display unit for displaying the output light amount of the LED module 14. The control unit according to an embodiment of the present invention may further include a light amount volume for adjusting the color temperature and the light amount of the LED module, respectively, in case the color temperature and the light amount need to be separately adjusted.

An LED illumination device is provided by applying each configuration of the present invention. According to an embodiment of the present invention, there is provided an LED illumination device including: a planar LED module having a plurality of LED chips arranged in a plane, and holes formed between the chips and the chips; A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light; The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the edge of the plate-like LED module and a plurality of air outlets formed on the back surface; A fan disposed in the case between the plate-shaped LED module and a rear surface of a case having the tuyere for introducing air from the air inlet port to send air to the tuyere through a hole formed between the chip and the chip; A capacitor portion for storing charge for flash light discharge; And a control unit for controlling lighting of the LED module in synchronization with shooting of the camera. The hole formed between the chip and the chip of the plate-shaped LED module according to an embodiment of the present invention is plated with copper, aluminum, ceramics, or silver for heat conduction. The case according to an embodiment of the present invention has a hexahedron shape, and a corner portion having four side faces is formed as a curved surface, and the air inlet is formed in the longitudinal direction on the four side faces or the front face of the hexahedron shape, Air is introduced into the holes formed between the chip and chip of the plate-shaped LED module. The controller according to an embodiment of the present invention further includes a light amount volume for adjusting the color temperature and the light amount of the LED module, respectively.

As described above, an optimal embodiment has been disclosed in the drawings and specification. While specific terms have been employed herein, they are used for the purpose of describing the invention only and are not used to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

5: diffusion plate 10: case
12: air inlet 14: LED module
16: PCB 18: LED chip
20: hole 22: impeller
24: motor 26: air blower
30: power supply unit 32:
34: switching unit 36: lighting control unit
40:

Claims (8)

A planar LED module in which a plurality of LED chips are arranged in a plane, and a hole is formed between the chip and the chip;
A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light;
The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the edge of the plate-like LED module and a plurality of air outlets formed on the back surface;
A fan disposed in the case between the plate-shaped LED module and a rear surface of a case having the tuyere for introducing air from the air inlet port to send air to the tuyere through a hole formed between the chip and the chip;
A capacitor portion for storing charge for flash light discharge; And
And a control unit for controlling lighting of the LED module in synchronization with shooting of the camera,
Wherein the control unit comprises: a continuous power control unit for controlling power supply to maintain the LED module in the continuous light;
An electric charge accumulation control unit for controlling the LED module to accumulate electric charge capable of generating flash light; And
And a discharge control section for performing discharge control so that the LED module can emit flash light.
Studio strobe.
The method according to claim 1,
In the hole formed between the chip and the chip of the plate-shaped LED module,
Copper, aluminum, ceramic, or silver-plated for thermal conduction,
Studio strobe.
The method according to claim 1,
Wherein the case has a hexahedral shape, and a corner portion having four side faces is formed as a curved surface,
Wherein the air inlet is longitudinally formed on the four side surfaces or the front surface of the hexahedron so that air is introduced into a hole formed between the chip and chip of the plate-
Studio strobe.
The method according to claim 1,
The case has a cylindrical shape,
Wherein the air inlet is longitudinally formed on a side surface or a front surface of the cylindrical shape to allow air to flow into a hole formed between a chip of the plate-
Studio strobe.
The method according to claim 1,
Wherein the control unit further comprises a light amount volume for adjusting the light amount of the continuous light and the flash light of the LED module,
Studio strobe.
The method according to claim 1,
Wherein the control unit further comprises a temperature sensor for measuring a temperature of the LED module, and when the temperature of the module exceeds a predetermined reference value,
STUDIER STROBO.
The method according to claim 1,
Wherein the control unit further comprises a light amount volume for respectively controlling a color temperature and a light amount of the LED module,
STUDIER STROBO.
A planar LED module in which a plurality of LED chips are arranged in a plane, and a hole is formed between the chip and the chip;
A diffusion plate disposed on a front surface of the plane on which the LED chip is arranged to diffuse light;
The diffusing plate may be a part or the whole of the front surface and the surface surrounding the rim of the plate-like LED module in parallel may be a side surface and the surface opposite to the surface opposite to the surface on which the chips of the plate- A case having a plurality of air inlets formed on a side surface between the front surface and the edge of the plate-like LED module and a plurality of air outlets formed on the back surface;
A fan disposed in the case between the plate-shaped LED module and a rear surface of a case having the tuyere for introducing air from the air inlet port to send air to the tuyere through a hole formed between the chip and the chip;
A capacitor portion for storing charge for flash light discharge; And
And a control unit for controlling lighting of the LED module in synchronization with shooting of the camera,
Aluminum, ceramics, or silver is plated for heat conduction in the holes formed between the chip and chip of the plate type LED module,
Wherein the case has a hexahedron shape, and a corner portion having four side faces is formed as a curved surface, and the air inlet is formed in the longitudinal direction on the four side faces or the front face of the hexahedron shape, The air is introduced into the holes formed in the outer peripheral surface
Wherein the control unit further comprises a light amount volume for respectively controlling a color temperature and a light amount of the LED module,
LED lighting device.

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