KR20220044009A - Light-emitting head for portable lighting with a linear reflective structure - Google Patents

Abstract

The present invention relates to a light-emitting head for portable lighting to illuminate a dark place by emitting light and, more specifically, to a light-emitting head for portable lighting with a reflective structure of straightness, wherein a structure of a reflector provided in a light-emitting head for portable lighting is improved to enable long distance emission while increasing straightness of light and cooling efficiency for heat on a light emitting side is increased. To achieve this, the light-emitting head comprises: a reflector (100) having a hemispherical shape and including an opening (110) through which reflected light is emitted on one side, a first fitting part (120) in which an LED module (300) is installed on the opposite side of the opening (110), and a reflection part (130) reflecting the light with an arbitrary curvature between the opening (110) and the first fitting part (120); a heat sink (200) inserted into the rear end of the reflector (100) through the first fitting part (120) and cooling heat of the LED module (300) transferred through the reflector (100); and the LED module (300) fitted and assembled to the first fitting part (120) of the reflector (100) in the longitudinal direction of the reflector (100) by using a first PCB (310) and allowing a light source (320) to be positioned in the outward direction of the first PCB (310) so that the light of the light source (320) is emitted in a direction opposite to the reflector (130).

Description

Light-emitting head for portable lighting with a linear reflective structure {Light-emitting head for portable lighting with a linear reflective structure}

The present invention is a light emitting head for portable lighting for illuminating a dark place by irradiating light, and improves the structure of a reflector provided in the light emitting head for portable lighting to enable long-distance irradiation while improving the straightness of light, and cooling efficiency for heat on the light emitting side It relates to a light emitting head for portable lighting having a rectilinear reflective structure to improve .

In general, portable lighting is for securing a user's field of vision by illuminating a dark place while carrying, and there are flashlights, portable searchlights, flashlights, etc., and portable lighting is widely used in various fields.

Such portable lighting is basically composed of a body provided with a light source, a battery built in the body to supply power to the light source, and a lens that transmits the light of the light source.

For example, looking at the prior Korean Patent Publication No. 10-1342042, the battery module is mounted on the rear inner side, the top light body having a female threaded portion on the inner peripheral surface of the tip; A male screw portion is formed on the outer circumferential surface of the rear end of the case member and assembled to the female screw portion of the main body, and a screw coupling portion is formed on the inner circumferential surface of the distal end of the case member, and a stone protrusion protrudes toward the front at a constant height inside, A ballast housing in which a plurality of bolt coupling holes are formed at equal intervals; a handle integrally provided on the outer surface of the case member and equipped with a switch for turning on/off the lamp; A fixing body having a lamp base is provided in the center of the front, a female screw is formed on an inner periphery spaced apart from the lamp base at a predetermined distance, and a protrusion piece in close contact with the protrusion of the ballast housing is provided on the rear surface of the fixing body, A lamp fixing unit in which a plurality of holes into which the bolts are fitted in the protrusion are drilled at equal intervals and assembled in close contact with the ballast housing; A front side thread and a rear side thread are formed on each surface of the front side and the rear side of the cylindrical body, and the rear side screw is coupled to the screw coupling part of the stabilizer housing, and the lamp fixing part is fitted and fixed in the center of the cylindrical body. spaced sockets; A connector tube is provided on the rear side of the reflective member in the shape of a fallopian tube, and a screw tube protruding from an end of the connector tube is screwed to the female screw of the lamp fixing part, and the lamp is inserted into the center of the connector tube. ball-shaped reflectors; The screw portion formed on the rear inner surface is screwed to the front screw portion of the socket, the head is provided with a transparent window on the front; is configured to include.

However, conventionally, when LED is used as a light source for portable lighting, the luminous intensity is weak compared to Halogen Lamp, Xenon Short Arc Lamp, HID Lamp, and Metal Haloud Lamp, so it is not suitable for long-distance irradiation. Because it is made in the form of a flat plate, if the LED is located inside the center of the reflector, the irradiation angle is narrow due to the shape characteristics of the LED light source, so it is not reflected by the reflector and is irradiated with the light of the light source itself, which is not suitable for long-distance irradiation. As the length of the lamp gradually increased, there was a problem in that the size of the portable lighting increased.

In addition, in the prior art, since the LED is mounted so that the light source faces the front inside the deepest central part of the reflector, the reflector has a deep curvature, so the light irradiated by the LED is not reflected to the central rear part, which has the strongest reflectance of light. As the distance increases, there is a problem that the so-called sunspot phenomenon occurs in which the light on the center disappears.

Korean Patent Publication No. 10-1342042 is presented.

The present invention is to solve the problems of the prior art, and by configuring the light source of the LED to be irradiated while facing the reflective surface of the reflector so that most of the light of the LED is reflected by the reflector regardless of the size of the reflector, the reflectance is increased to irradiate the distance The purpose is to provide portable lighting suitable for lighting and to reduce the size of the reflector.

In addition, the present invention places the light source of the LED eccentrically from the center of the reflector and arranges one or more light sources with their backs to each other to a deep position inside the reflector so that the one or more lights do not interfere with each other while the curvature is deep to the inner deep part of the reflector. It minimizes the so-called sunspot phenomenon, in which the light on the center disappears as the distance of the irradiated light is reflected by the LED light source reflected on the reflector by making it easy to reflect on the rear part, which has the strongest light reflectivity, and portable lighting using LED The purpose is to improve the irradiation efficiency of

The present invention in order to solve the above object;

It is a hemispherical shape, one side of which has an opening through which reflected light is irradiated, and has a first fitting part in which an LED module is installed on the opposite side of the opening, and a reflector provided with a reflecting part that reflects light with an arbitrary curvature between the opening and the first fitting part class;

a heat sink fitted to the rear end of the first fitting part reflector and cooling the heat of the LED module transmitted through the reflector;

The first fitting part of the reflector is fitted and assembled in the longitudinal direction of the reflector using a first PCB, and the light source is positioned in the outer direction of the first PCB so that the light of the light source is irradiated in a direction opposite to the reflector It provides a light emitting head for portable lighting having a rectilinear reflective structure, characterized in that it comprises an LED module.

According to the present invention, most of the light of the LED is reflected by the reflector, so that the reflectivity is increased, so that it is suitable for long-distance irradiation, and the size of the reflector can be reduced, so that it is possible to provide a portable lighting with a small size.

In addition, the so-called sunspot phenomenon in which the light on the center disappears as the distance between the LED light source and the irradiated light increases as the distance from the LED light source is reflected by the reflector because the deep curvature is deep inside the reflector, making it easy to reflect on the rear part, which has the strongest reflectivity of light. This is minimized, and there is an effect that the irradiation efficiency of portable lighting using the LED is improved.

1 to 4 are views of a light emitting head for portable lighting having a rectilinear reflective structure according to a first embodiment of the present invention.
5 is a view of a portable tank having a rectilinear reflective structure according to a second embodiment of the present invention.

The characteristics of the light emitting head for portable lighting having a rectilinear reflective structure according to the present invention will be understood by the embodiments described in detail below with reference to the accompanying drawings.

On the other hand, in describing the embodiments, detailed descriptions of components widely known and used in the technical field to which the present invention belongs or not belong will be omitted, and unnecessary descriptions will be omitted and the present invention according to this will be omitted. This is to convey the point more clearly.

Hereinafter, as an embodiment of the basic configuration of the present invention, the configuration of each part of the light emitting head for portable lighting having a rectilinear reflective structure according to the first embodiment will be described in detail with reference to FIGS. 1 to 3 . 1 is a cross-sectional side view of a light emitting head for portable lighting, FIG. 2 is a plan view of a light emitting head for portable lighting, FIG. 3 is an embodiment of a reflector among the light emitting heads for portable lighting, and FIG. 4 is an embodiment in which the light of the light emitting head for portable lighting is reflected.

A schematic view of the light emitting head 1 for portable lighting having a rectilinear reflective structure according to this, a reflector 100 for reflecting light; a heat sink 200 for cooling the heat of the LED module 300; LED module 300 for irradiating light; is configured to include.

On the other hand, in the case of the portable light 10 to which the light emitting head 1 is applied, it may be made of a flashlight, a portable searchlight, a flashlight, etc., and the light emitting head 1 is directly irradiated with light from the portable light 10 for the head part.

A detailed configuration of the light emitting head 1 for portable lighting having a rectilinear reflective structure configured as described above will be described in detail with reference to the accompanying drawings.

First, the reflector 100 is;

One side of the hemispherical shape has an opening 110 through which reflected light is irradiated, and the opposite side of the opening 110 has a first fitting part 120 in which the LED module 300 is installed, and the opening 110 and A reflection unit 130 that reflects light with an arbitrary curvature is provided between the first fitting portions 120 , and reflects the light of the LED module 300 using the reflection unit 130 to the front through the opening 110 . to investigate.

For example, the reflector 100 is; It is coupled to the inside of the front body of the portable light 10 in a hemispherical shape, and the reflector 100 may be manufactured to correspond to the size and shape of the applied portable light 10, and the front of the reflector 100 is a portable light. The lens of (10) can be combined.

On the other hand, the reflective mirror 100 has an opening 110 formed on the open side in a hemispherical shape, and the first fitting part 120 in which the LED module 300 is installed is formed as a through hole on the opposite side of the opening 110 , , a reflective part 130 is formed between the opening 110 and the first fitting part 120 to reflect the light of the LED module 300 to be irradiated to the opening 110, the reflective part 130 is the It is formed as a plate body having an arbitrary curvature that gradually expands from the first fitting part 120 to the opening 110 .

In this case, a material having a high reflectance may be selected from among methods such as plating, painting, and film attachment to reflect light on the inner surface of the reflective unit 130 .

Here, the reflector 100 is; The angles from the first fitting part 120 to the opening 110 are sequentially extended to a curvature of 14°, 27°, 52°, 72°, 91°, 106°, 117°, 125°, and 131°. include more

As the angle at which the reflecting mirror 100 is extended from the first fitting part 120 to the opening 110 is set, the rear side of the reflecting mirror 100 has a sharp curvature and goes toward the front side of the opening 110 side. It has a gentle curvature, and accordingly, the reflectance of the LED module 300 is improved through the sharp curvature of the rear side of the reflector 100, and the reflector through the gentle curvature of the front side of the reflector 100 ( 100) widens the range of the reflection angle of the light of the LED module 300 that is irradiated opposite to the LED module 300 so that the light of the LED module 300 is reflected by the reflector 100 as a whole, and the reflection efficiency is maximized.

On the other hand, on the outside of the rear end of the first fitting part 120, a screw part 121 for screwing into the screw hole 221a formed inside the front surface of the assembly part 221 of the heat sink 200 is protruded, and the screw part The reflector 100 is coupled to the heat sink 200 in a detachable manner using 121 , and the screw portion 121 has a screw thread that can be fastened to the screw hole 221a is formed on the outer periphery.

And, the heat sink 200;

This is to cool the heat of the LED module 300 transmitted through the reflector 100 while being fitted to the rear end of the reflector 100 in the first fitting part 120 .

For example, the heat sink 200 may include; It further includes a heat sink 220 for cooling the heat of the LED module 300 by a heat exchange action using a plurality of plate bodies.

The heat sink 220 has an assembly part 221 for assembling at the rear end of the reflector 100 is provided in the center, and a plurality of plate bodies around the assembly part 221 have a plurality of grooves in a line at regular intervals. A protruding first cooling unit 222 is provided.

At this time, the assembly portion 221 is formed with a screw hole 221a for screwing to the screw portion 121 of the reflector 100 inside the center of the front end, and the screw hole 221a is a part of the LED module 300 . A screw thread is formed in the screw hole (221a) portion in a state in which it is formed in the form of a through hole through which it is inserted.

On the other hand, as the heat sink 220 is assembled in a detachable manner to the reflector 100 through the screw hole 221a of the assembling unit 221 , assembly is simplified, and to the reflector 100 through the assembling unit 221 . Heat of the LED lamp 300 may be transferred to the assembled heat sink 220 , and the transferred heat exchanges heat with air using a groove formed by the plate structure of the first cooling unit 222 while the LED module 300 . to perform a heat dissipation action to cool the heat of the

And, the LED module 300 is;

The first PCB 310 is inserted into the first fitting part 120 of the reflector 100 in the longitudinal direction of the reflector 100 and assembled, and the light source 320 is directed outward of the first PCB 310. In this position, the light of the light source 320 is irradiated in a direction opposite to the reflection unit 130 .

For example, the LED module 300 is; The reflector 100 is fitted and coupled to the first fitting portion 120 in the longitudinal direction, and further includes a first PCB 310 for coupling the light source 320 in the outward direction.

The first PCB 310 is a printed circuit board provided with a light source 320 in one outward direction, supplying power to the light source 320 , and the front end of the first PCB 310 is a reflector 100 . The light source 320 is assembled to the inside of the reflector 100 while being inserted into the first fitting part 120 of the Electrical connections are made.

Here, an electrode 311 is provided to induce an electric flow of the light source 320 to one side of the first PCB 310 of the LED module 300 ,

The first PCBs 310 each have a pair of opposed first PCBs 310, respectively, supplying power to the pair of first PCBs 310 using the electrodes 311 to supply power to the pair of first PCBs 310, respectively. The method further includes individually controlling each of the first PCBs 310 of the .

The electrode 311 has a + pole and a - pole, and the electrode 311 is electrically connected to an external power source in a portion where the rear end of the first PCB 310 is exposed to the rear and outside of the reflector 100 . By supplying it to the light source 320 provided in the first PCB 310 , an independent electric flow is induced in one first PCB 310 .

On the other hand, as the pair of first PCBs 310 provided with the electrode 311 are provided to face each other, the pair of first PCBs 310 can be individually controlled by the electrode 311 , , through individual control of the first PCB 310 using the electrode 311, the output of the light source 320 provided in each first PCB 310 is divided compared to the supplied power, and the output of the light source 320 is increased. It is possible to reduce the amount of heat generated by reducing the amount of light generated by individually controlling the output of the light source 320 provided in each of the first PCBs 310 through the electrodes 311 provided in each of the first PCBs 310 individually. Allows for direction adjustment.

In addition, the LED module 300 is; It further includes a second PCB 330 electrically connected to the first PCB 310 to control the light source 320 while supplying power to the first PCB 310 .

The second PCB 330 is a printed circuit board, and the second PCB 330 is coupled to the rear end of the heat sink 200 and the first PCB 330 is coupled to the first PCB 310 through the electrode 311 of the first PCB 310 . It is electrically connected to the PCB 310 and serves to supply power to the first PCB 310 through the electrode 311 while a power supply such as a battery is connected to the second PCB 330 .

In this case, the second PCB 330 may control the operation of the light source 320 of the first PCB 310 through electrical and electronic components such as a microcomputer, and may be individually connected to the pair of first PCBs 310 . While power is supplied, the light of the light sources 320 provided in the different first PCBs 310 can be adjusted respectively.

In addition, the LED module 300 is; It further includes a light source 320 that is provided in the rear direction of the first PCB 310 and irradiates light from a side opposite to the reflecting unit 130 inwardly of the reflecting mirror 100 .

The light source 320 is a light emitting diode (LED), and while the light source 320 is provided in an outer direction of the first PCB 310 , the light of the light source 320 is transmitted to the reflection unit 130 . The light source 320 selectively irradiates light toward the reflector 130 under the control of the second PCB 330 to perform the lighting function of the portable lighting 10 by the reflected light. and the intensity of light is adjusted by the second PCB 330 .

At this time, the light source 320 irradiates light in a hemispherical shape. Due to the hemispherical shape of the light source 320, the light of the light source 320 may be irradiated to the rear part, the central part, and the front part of the reflective part 130. .

Hereinafter, as another embodiment of the present invention, a light emitting head for portable lighting having a rectilinear reflective structure according to a second embodiment will be described in detail with reference to FIG. 4 . 4 is a side cross-sectional view of a light emitting head for portable lighting.

According to this, the heat sink 200 of the light emitting head 1 for portable lighting having the above-described structure; Cooling the heat of the LED module 300 transmitted through the reflector 100 by being in surface contact with the outer surface of the reflector 100 in a state where one or more are fitted to one side of the outer periphery of the first cooling unit 222 It further includes an auxiliary heat sink 230 to selectively add a heat dissipation function.

The auxiliary heat dissipation body 230 may be coupled to an arbitrary point on one side of the outer periphery of the first cooling unit 222 in an approximate plate body shape, and the auxiliary heat dissipation body 230 may be connected to the first cooling unit ( One or more can be selectively installed at various points on the outer periphery of 222), and a second fitting part 231 that is fitted between the plate bodies of the first cooling part 222 is formed in the rear inside of the auxiliary heat sink 230, A conductive surface 232 that is in surface contact with the outer surface of the reflector 100 in the front of the second fitting portion 231 is provided as a plate body corresponding to the outer shape of the reflector 100 .

At this time, the second fitting part 231 is made of a plurality of plate bodies corresponding to the shape of the first cooling part 222 so as to be fitted between the plate bodies of the first cooling part 222 in a personal form, The drawing 232 shows a function of transferring the heat of the LED module 300 transmitted through the reflector 100 to the second fitting part 231 side.

Here, the auxiliary heat dissipation body 230 further includes forming a through hole 231a through which the second fitting part 231 is fitted to the middle point of the first cooling part 222 and allows air to pass therebetween. .

The through hole 231a is a space through which air passes between the first cooling part 222 and the second fitting part 231 while the second fitting part 231 is fitted to the middle point of the first cooling part 222. The cooling efficiency is improved while the air smoothly passes through the gap in which the auxiliary heat sink 230 is inserted through the through hole 231a.

On the other hand, the auxiliary heat dissipation body 230 may be made of graphite coated with a protective coating on its surface in a state made by hardening artificial or natural graphite powder.

Characteristically, the auxiliary heat sink 230 can increase cooling efficiency by selectively mounting one or more auxiliary heat sinks 230 when additional cooling of the LED module 300 is required, and the auxiliary heat sink 230 ), it is possible to adjust the cooling function for the LED module 300 by using.

In addition, as the auxiliary heat dissipation body 230 is made of graphite, the cooling efficiency of the LED module 300 is greatly increased due to the properties of graphite, which has superior thermal conductivity than silver, copper, and aluminum, It is possible to maintain the cooling efficiency even if foreign substances are accumulated.

In addition, the auxiliary heat sink 230 is; The portion in contact with the first cooling unit 222 and the reflector 100 further includes a configuration for bonding with a ceramic adhesive.

As the auxiliary heat sink 230 is adhered using a ceramic adhesive, the gap to which the auxiliary heat sink 230 is bonded is completely filled, thereby improving heat conduction efficiency and performing an insulating function.

As described above. Although the present invention has been expressed with descriptions and drawings illustrating specific preferred embodiments, the terms used herein are for easy explanation of the present invention, and limit the meaning of these terms, but limit the scope of the claims not to do it,

The present invention is capable of various changes, alterations, modifications, etc., by those of ordinary skill in the art to which the invention pertains, within the scope not departing from the spirit and scope of the invention indicated by the claims according to the above embodiment. Anyone can easily see that it is possible.

One; luminous head 10; mobile lighting
100; reflector 110; opening
120; fitting 130; reflector
200; heat sink
220; heat sink 300; led module
310; first pcb 320; light source
330; 2nd pcb

Claims (5)

One side of the hemispherical shape has an opening 110 through which reflected light is irradiated, and the opposite side of the opening 110 has a first fitting part 120 in which the LED module 300 is installed, and the opening 110 and a reflector 100 provided with a reflector 130 for reflecting light with an arbitrary curvature between the first fitting portions 120;
a heat sink 200 for cooling the heat of the LED module 300 transmitted through the reflector 100 while being fitted to the rear end of the reflector 100 in the first fitting part 120;
The first PCB 310 is inserted into the first fitting portion 120 of the reflector 100 in the longitudinal direction of the reflector 100 and assembled, and the light source 320 is directed outward of the first PCB 310. A light emitting head for portable lighting having a rectilinear reflective structure, characterized in that it includes an LED module (300) for irradiating the light of the light source (320) in a direction opposite to the reflecting unit (130) by making this position. According to claim 1,
The LED module 300 is provided with an electrode 311 for inducing an electric flow to the light source 320 to one side of the first PCB 310,
The first PCB 310 includes a pair of first PCBs 310 opposite to each other, respectively, supplying power to the pair of first PCBs 310 using the electrode 311 to supply power to the pair of first PCBs 310 , respectively. A light emitting head for portable lighting having a rectilinear reflective structure further including individually controlling each of the first PCBs 310 of the . According to claim 1,
The LED module 300 is electrically connected to the first PCB 310 and further includes a second PCB 330 that controls the light source 320 while supplying power to the first PCB 310 . Light emitting head for portable lighting having a. According to claim 1,
The heat sink 200 is a light emitting head for portable lighting having a rectilinear reflective structure further including a heat sink 220 for cooling the heat of the LED module 300 by a heat exchange action using a plurality of plate bodies. According to claim 1,
The reflector 100 has a screw portion 121 protruding outside the rear end thereof, and a screw hole 221a to which the screw portion 121 is screwed is formed inside the front end of the heat sink 200 to form the screw portion 121 . A light emitting head for portable lighting having a rectilinear reflective structure further including detachment of the reflector 100 and the heat sink 200 through the fastening structure of the screw hole 221a.

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