KR20120011691A - LED Shadowless Lamp Using Curved Surface Heat Sink - Google Patents

Abstract

PURPOSE: An LED astral lamp using a curved surface cooling fin is provided to increase convenience of a surgical operator by precisely adjusting a light irradiation angle and a light irradiation area of the LED astral lamp. CONSTITUTION: A plurality of cooling fins(110) forms one circle shape. A substrate is combined to the cooling fin. A plurality of LEDs(10) is combined to the substrate. A plurality of LEDs is perpendicular to a tangent plane of the cooling fin. A cross section of the cooling fin is concavely formed toward a light irradiation direction of the LED. A bracket interlinks a plurality of cooling fins. One side groove and the other side groove for coupling and fixing a combining member are formed in the bracket.

Description

LED Shadowless Lamp Using Curved Surface Heat Sink

The present invention relates to a LED lightless lamp using a curved heat sink, and more specifically, it is possible to precisely control the irradiation angle and the irradiation area by using a heat sink having a curved surface, and through coupling using a bracket between heat sinks forming a plurality of pieces. The present invention relates to an LED lightless lamp that allows a plurality of heat sinks to be uniformly maintained while maintaining the same angle when the heat sink's orientation angle toward the central axis of the lightless lamp changes.

Generally, incandescent lamps, fluorescent lamps, mercury lamps, or sodium lamps are mainly used as light sources of conventional lighting devices. However, the conventional light sources have a disadvantage in that energy consumption is large compared to brightness, and the light quantity decreases rapidly with time due to a short lifespan, and thus frequent replacement is required. In addition, since mercury gas is used inside, there was a serious problem of environmental pollution during disposal.

Recently, a light-emitting diode (hereinafter referred to as an LED) has been spotlighted in place of an existing lighting fixture. LEDs are semi-permanently longer than other light sources, and have a high light conversion efficiency in which electrical energy is directly converted to light energy. In addition, since no harmful substances such as filament or mercury are used, it is an environmentally friendly light source that can replace the existing incandescent, fluorescent, or halogen lamps.

In particular, due to the advantages of the LED is also being replaced from the existing halogen lamp to the LED lamps used in the operating room. Shadowless lamp refers to a lighting device that helps smooth the procedure by compensating for shadows caused by the operator's head and arms.

On the other hand, in order to proceed smoothly according to the depth or area of the incision during the operation should be able to easily adjust the irradiation area and the irradiation angle of the shadowless. That is, it is necessary to adjust the light irradiation angle from the light source to the condensing surface (procedure site or incision site) according to the treatment situation and the three-dimensional shape of the incision site, and to adjust the area where the light is irradiated according to the size of the procedure site.

The control of the light irradiation angle and the irradiation area of the lightless lamp may be achieved by focusing each light source toward a constant focus by adjusting the alignment angle of the heat sink in the case of the LED lightless lamp. Since this was used, there was a difficulty in precise focusing.

11 shows an embodiment of a conventional LED lightless lamp. As can be seen through FIG. 11, a conventional LED lightless lamp is a lightless lamp (FIG. 11 (a)) using an integrated heat sink or a combination of a plurality of heat sinks separated from each other (FIG. 11 (b)). Has been used. The user was able to adjust the angle of inclination of the lightless heat sink by manipulating the knob located at the center of the lightless lamp, and thereby controlling the irradiation angle of the individual LEDs attached to the heat sink.

However, when using an integrated heat sink (Fig. 11 (a)) as described above, there was a problem that accurate focusing (hard focusing) is difficult, in order to overcome this problem, the lightless lamp made of a combination of a plurality of heat sinks separated from each other (Fig. 11 In the case of using (b)), it was difficult to move due to the protruding part, the risk of breakage was high, and the cleaning was inconvenient, which was not good for hygiene.

In addition, as shown in Figure 11 (b) when using the heat sink made of a plurality of pieces of heatless lamp, due to the weight of the heat sink may cause sagging and torsion on each heat sink, such as the angle of orientation of the individual heat sink When not uniformly adjusted and an error occurs, it is difficult to use the angle and the irradiation area of the light collecting part not precisely controlled.

Accordingly, the present invention has an object of the present invention to solve the above technical problem, and to provide an LED lightless lamp that can adjust and maintain the irradiation angle and irradiation area more precisely.

In order to achieve the above object, the LED lightless lamp using the curved heat sink of the present invention comprises a plurality of heat sinks connected in a circumferential direction while forming a circle shape as a whole; A substrate coupled to the heat sink; And a plurality of LEDs coupled to the substrate and formed to be perpendicular to a tangent plane of the heat sink at each coupling position. It includes, the cross section of the heat sink is characterized in that formed in a curved concave toward the light irradiation direction of the LED.

At this time, the heat sink is characterized in that it has a fan shape.

In addition, the plurality of heat dissipating plates arranged in the joint may be retracted and unfolded at a uniform angle about the same axis between a first position having a minimum irradiation area and a second position having a maximum irradiation area.

In a preferred embodiment of the present invention, the lightless lamp further includes a bracket connecting the plurality of heat sinks, one side groove for fastening the coupling member coupled to the first heat sink and the second heat sink to the bracket and The other side groove is formed, and the other side groove is formed in a slot form so as to be slidable inside the other groove while the coupling member fastened to the other side groove is coupled to the heat sink so that the plurality of heat sinks are connected through the bracket. It is characterized by being able to retract and unfold, forming a curved surface with one orientation angle.

According to the LED lightless lamp using the curved heat sink according to the present invention, it is possible to precisely adjust the irradiation angle and the irradiation area of the lightless lamp to increase the convenience of the operator.

In addition, it is possible to minimize the torsional phenomenon of individual heat sinks in the LED lightless lamp composed of a plurality of heat sink pieces, and to maintain uniformly uniform angles of the heat sinks so that the irradiation angle and the irradiation area of the LED lightless lamp can be precisely maintained. do.

In addition, even if there is a problem in the angle adjustment function of some heat sinks, since a plurality of heat sinks move as a single unit does not affect the overall function can reduce the maintenance cost of the LED light bulb.

1 is a perspective view of the LED lightless lamp according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing the top surface of the LED lightless lamp according to an embodiment of the present invention.
Figure 3 is an exploded perspective view showing a coupling state of the heat sink of the LED lightless lamp according to an embodiment of the present invention.
Figure 4 is an enlarged view showing a coupling portion between the heat sink using the bracket according to the embodiment of the present invention.
Figure 5 is an enlarged view showing the state of the heat sink angle adjustment unit according to an embodiment of the present invention.
Figure 6 is an exploded perspective view showing the bottom of the LED lightless lamp according to an embodiment of the present invention.
7 is a cross-sectional view showing an LED lightless lamp according to an embodiment of the present invention.
Figure 8 is an enlarged cross-sectional view showing a state of the heat sink angle adjustment unit according to an embodiment of the present invention.
9 is a cross-sectional view showing an angle adjustment of the heat sink according to the embodiment of the present invention.
10 is a view showing comparison of light distribution uniformity of the irradiated surface according to the number of heat sinks having curved surfaces.
11 is a view showing an embodiment of a LED lightless lamp according to the prior art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 to 3 illustrate an upper surface of the LED lightless lamp 100 according to the embodiment of the present invention. The LED lightless lamp 100 may include a plurality of heat sinks 110, wherein the plurality of heat sinks 110 may be formed to be connected in a circumferential direction while forming a circle shape as a whole. In addition, according to the preferred embodiment of the present invention, the heat sink 110 may be arranged to form a single circle by combining a plurality of while having a fan shape.

A plurality of LEDs 10 may be coupled to the heat sink 110, respectively. Referring to FIG. 6, the LED 10 is irradiated with light from the bottom of the lightless lamp 100, and may be coupled to the heat sink 110 through a substrate (not shown) disposed on the bottom of the heat sink 110. have. In addition, the plurality of LEDs 10 may be formed to be perpendicular to the tangent plane of the heat sink 110 at each coupling position when coupled to the substrate. In this way, each LED 10 disposed on the heat sink 110 may be irradiated accurately at a desired angle toward the irradiation surface according to the orientation angle of the heat sink.

Meanwhile, the cross-sections of the plurality of fan-shaped heat sinks 110 according to the preferred embodiment of the present invention may be formed in a concave curved surface toward the light irradiation direction of the LED 10. 6 and 7 illustrate a plurality of heat sinks 110 having curved surfaces and a plurality of LEDs 10 coupled to the heat sinks. The heat sink 110 may be formed to have a concave curved surface toward the light irradiation direction (the bottom of the LED shadowless light) of the LED 10, the heat sink 110 is formed to form a curved surface, the plurality of LED (10) Are each perpendicular to the tangent plane of the heat sink 110 at its coupling position so that the light irradiated from each LED 10 can be focused toward a certain focal point.

That is, the direction of light irradiation of the plurality of LEDs 10 disposed on the same heat sink 110 may be directed toward one focal point instead of side by side, thereby adjusting the angle of orientation of the heat sink as described below. When the irradiation area and the irradiation angle can be adjusted more precisely.

Meanwhile, the heat dissipation plate 110 of the LED lightless lamp according to the embodiment of the present invention may further include a bracket for maintaining a connection with another heat dissipation plate adjacent thereto. 4 is a view illustrating a coupling structure between the bracket 200 and the heat sink 110 in detail.

Bracket 200 according to the present invention may be formed with two grooves, one groove (202a, not shown) is coupled to the coupling member 210b on one side of one heat sink (first heat sink) is the heat sink ( First heat sink), and the other groove 202b is coupled to the other heat sink (second heat sink) to be coupled to the other heat sink (second heat sink) to be connected to the other heat sink (second heat sink). Can be.

The size of the one side groove may be preferably formed to match the diameter of the coupling member 210a so that the bracket 200 is fixed to the heat sink (first heat sink). On the other hand, the other groove 202b may be configured in the form of a slot, the coupling member 210b fastened to the other groove 202b becomes slidable inside the slot of the other groove 202b. Accordingly, the distance between the heat dissipation plate (first heat dissipation plate) coupled to the coupling member 210a and the other heat dissipation plate (second heat dissipation plate) coupled to the coupling member 210b may be widened in the longitudinal direction of the slot. .

As described above, the bracket 200 coupled to the heat sink 110 allows the plurality of heat sinks to be increased or decreased within a predetermined range while maintaining a plurality of heat sinks in parallel, and as described below, a plurality of heat sinks are the same. It can be positioned on a curved surface with a uniform orientation angle while it is retracted and stretched about its axis (adjustment of orientation angle).

On the other hand, the bracket may be made of an elastic body, preferably a leaf spring.

According to a preferred embodiment of the present invention, the plurality of heat sinks 110 may be formed in a fan shape so that the light distribution on the irradiation surface is uniform. The fan-shaped heat sink 110 makes it easy to increase the number of heat sinks 110 in the circumferential direction of the lightless lamp 100 on the space arrangement.

The plurality of LEDs 10 coupled to one curved heat sink 110 irradiates light toward the same focal point determined by the curvature of the heat sink, and each of the heat sinks 110 when a plurality of curved heat sinks 110 are present. The light of the LED 10 is irradiated toward a constant focus, respectively, according to the formed curved surface. In this case, when the number of heat sinks 110 increases, the respective focal points are formed according to the number of heat sinks, so that the distribution of light of the LED 10 may be made uniform.

The attached FIG. 10 shows the light distribution of the irradiation surface when three curved heat sinks are used (FIG. 10 (a)), and the light distribution of the irradiation surface when six curved heat sinks are used (FIG. 10 (b)). . As can be seen through FIG. 10, the LEDs 10 of each curved heat sink may form a plurality of foci in the circumferential direction, and as a plurality of foci are formed as described above, a light distribution for irradiating a constant irradiation surface is provided. It can be made uniform.

That is, in the present invention, by using a fan-shaped heat sink 110, a larger number of individual heat sinks 110 can be formed in the circumferential direction, and each heat sink 110 is formed as each heat sink 110 is curved. The LEDs 10 have a plurality of foci that are individually formed in the circumferential direction. At this time, by adjusting the orientation angle of the heat sink 110 to retract and spread, the LED 10 light of the light-emitting lamp 100 may have a narrow irradiation area while focusing (Focusing), uniform for a large irradiation area It can also be adjusted to have a light distribution.

6 is a bottom view of the LED lampless light 100 according to the present invention, Figure 7 shows a cross section of the lampless lamp. Referring to FIG. 6, the LED lightless lamp 100 according to the present invention may include a handle 400 for adjusting an alignment angle of a heat sink at a central portion thereof, and the handle 400 is turned clockwise or counterclockwise. By rotating, the heat sink can be pinched or unfolded.

5 and 8 are shown as an embodiment for adjusting the angle of the heat sink (110). 5 shows a view of the heat sink 110 alignment angle control unit operated by the handle 400 viewed from above, and FIG. 8 shows a cross section of the alignment angle control unit.

5 and 8, the heat sink angle adjusting portion of the LED lightless lamp according to the present invention is a handle 400, a rotating shaft 410 coupled to the handle and having a thread formed on an upper outer surface thereof, the rotating shaft 410 and a screw. Combined and moving up and down plate 360 that moves up and down in conjunction with the rotational movement of the rotary shaft 410, the seesaw movement rod 300 extending radially toward each heat sink 110 in the elevating plate 360, The head 310 located at the end of the seesaw movement rod, the heat sink support 330 for supporting the heat sink 110 in the direction of gravity, formed on both ends of the head portion 310 of the heat sink support 330 The first rotation pin 350 is coupled to one side and coupled to the head portion 310 so that the heat sink supporter 330 is rotatable, the other side of the heat sink supporter 330 is the axis of the seesaw movement Second rotating pin 320 and the second rotating pin 320 Including a support cradle 340 which can be made to the configuration.

9 illustrates a process of radiating the heat sink 110 toward the light irradiation direction through the above configuration. First, when the user rotates the handle 400 in the first rotation direction, the rotating shaft 410 coupled to the handle returns to the first rotation direction, and the lifting plate 360 screwed with the rotating shaft 410. This can rise. As the elevating plate 360 rises, the seesaw rod 300 extending from the elevating plate 360 rises together.

When the seesaw exercise rod 300 is raised, the heat sink supporter 330 coupled through the head portion 310 of the seesaw exercise rod 300 and the first rotation pin 350 is the first rotation fin 350. ) Can be rotated counterclockwise. The counterclockwise rotation is a seesaw movement in which the seesaw movement rod 300 rises and the heat sink 110 descends when the second rotation pin 320 is centered. As the heat sink 110 descends as described above, the heat sink 110 is retracted from the LED lightless lamp of the present invention.

At this time, the seesaw movement bar 300 of the present invention is a plurality of radially extending around the elevating plate 360 is connected to each of the plurality of heat sinks 110 so that each heat sink 110 is centered on the same axis To be able. Here, the same axis is a straight line connecting the center point of the lightless lamp 100 and the light emitted from each of the heat sinks 110, and may be an axis coinciding with the longitudinal direction of the handle 400 or the rotation shaft 410. .

The maximum position (first position) at which the plurality of heat sinks 110 can be lifted may be a position when the plurality of heat sinks 110 are in contact with each other so that there is no space between the heat sinks. have. At this time, when the heat sink 110 is fully retracted (first position), the irradiation area is reduced to the minimum with respect to the light irradiation surface spaced apart from the predetermined distance.

On the other hand, the spreading of the heat sink 110 may be made by turning the handle 400 in the opposite direction of the first rotation direction (second rotation direction). At this time, the heat sink support 330 is rotated in the clockwise direction with respect to the first rotary pin 350, the heat sink 110 is raised when the center of the second rotary pin 320 and the seesaw movement rod 300 ) Will become a seesaw movement. Accordingly, the heat dissipation plate 110 is unfolded, and thus the process of unfolding the heat dissipation plate 110 is opposite to the process of lifting the heat dissipation plate 110 and the direction of movement and rotation of each component.

On the other hand, the maximum position (second position) that the plurality of heat sink 110 can be unfolded, preferably the coupling member 210b shown in Figure 4 of the slot formed in the other groove 202b of the bracket 200 One end may be a position when the gap between the neighboring heat sink is maximized. When the heat sink 110 is opened to the maximum (second position), the irradiation area is maximized with respect to the light irradiation surface spaced apart from a certain distance.

As such, the process of expanding and unrolling the plurality of heat sinks 110 about the same axis may be performed by adjusting the orientation angles of the heat sinks 110 about the same axis. In the embodiment of the present invention, the angle of orientation of each of the heat sinks 110 may be maintained between 70 degrees and 87 degrees with respect to the central axis. That is, in the first position where the heat sink 110 is retracted to the maximum and has the smallest irradiation area, the angle formed by each heat sink 110 with the central axis can be maintained at 70 degrees, and the heat sink 110 is opened to the maximum so that the maximum irradiation area is reached. In the second position having the angle of each heat sink 110 and the central axis can be maintained at 87 degrees.

Considering the distance from the patient and the size of the surgical site in the actual surgical environment, the heat sink 110 forms an irradiation area suitable for the actual surgical environment by maintaining the alignment angle between the central axis and 70 degrees to 87 degrees. It becomes possible.

In addition, the LED lightless lamp 100 according to the embodiment of the present invention, as described above, the plurality of heat sinks 110 are caught between the first position and the second position in the process of lifting and unfolding the bracket 200 is coupled between each heat sink. By holding and zooming, the plurality of heat sinks can move while maintaining a uniform orientation angle.

That is, when the heat sink 110 of the present invention is opened by the above-described process, the distance between each heat sink 110 is widened, and when the heat sink 110 is retracted, the gap between each heat sink 110 is narrowed. The bracket 200 allows all of the circumferential heat sinks to move together as a unit in the process of the heat sink 100 being retracted and unfolded, and in this process, all the heat sinks 110 form a curved surface while maintaining parallelism. As a result, the LEDs 10 disposed on the plurality of heat sinks 110 may maintain an accurate irradiation angle toward a constant focus.

Therefore, the heat dissipation member 110 may support the heat dissipation plate 110 while the heat dissipation member 330 supports the heavy heat dissipation plate 110, and the heat dissipation angle of the heat dissipation plate may be different. You can eliminate it.

In the above described the present invention through specific embodiments, those skilled in the art can make modifications, changes without departing from the spirit and scope of the present invention. Therefore, what can be easily inferred by the person of the technical field to which this invention belongs from the detailed description and the Example of this invention is interpreted as belonging to the scope of the present invention.

10: LED 100: LED lightless
110: heat sink 200: bracket
202: coupling groove 210: coupling member
300: seesaw movement rod 330: heat sink support
360: elevating plate 400: handle
410: axis of rotation

Claims (4)

A plurality of heat sinks connected in a circumferential direction while forming one circle shape as a whole;
A substrate coupled to the heat sink; And
A plurality of LEDs coupled to the substrate and formed to be perpendicular to a tangent plane of the heat sink at each coupling position;
It includes, wherein the cross section of the heat sink is LED lightless using a curved heat sink, characterized in that formed in a curved concave toward the light irradiation direction of the LED.
The method according to claim 1,
LED heatless lamp using a curved heat sink, characterized in that the heat sink has a fan shape.
The method according to claim 1,
The plurality of heat dissipation plates disposed in the contiguous manner may be folded and unfolded at a uniform angle about the same axis between the first position having the smallest irradiation area and the second position having the largest irradiation area. .
The method according to any one of claims 1 to 3,
The lightless lamp further includes a bracket connecting the plurality of heat sinks,
The bracket is formed with one side groove and the other side groove for fastening the coupling member coupled to the first heat sink and the second heat sink to be connected,
The other groove is a slot form and formed to be slidable inside the other groove while the coupling member fastened to the other groove is coupled to the heat sink, so that the plurality of heat sinks have a uniform orientation angle connected to the bracket through the bracket. LED lightless lamp using a curved heat sink, characterized in that to form a curved surface can be retracted and stretched.

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