KR20120114039A

KR20120114039A - Led lamp possible change of beam distribution

Info

Publication number: KR20120114039A
Application number: KR1020110031780A
Authority: KR
Inventors: 강기태
Original assignee: 서울반도체 주식회사
Priority date: 2011-04-06
Filing date: 2011-04-06
Publication date: 2012-10-16

Abstract

The present invention relates to an LED lamp, and more particularly, having an optical unit having different directing angles, changing a directing angle that can be used for various purposes by changing the directing angle of light emitted from the LED through the rotation of the cover. This relates to a possible LED lamp.
The present invention includes a housing having an internal space having an open top and a substrate on which a plurality of LEDs are mounted in the internal space; A cover rotatably coupled to an open upper end of the housing; And a plurality of optical parts disposed in the circumferential direction of the cover to determine a directing angle of light generated from the LED and to emit to the outside, wherein the plurality of optical parts are repeatedly arranged with different directing angles. The direction of change of the direction of the light emitted to the outside through the rotation of the cover to provide an LED lamp capable of changing the direction angle.

Description

LED lamp capable of changing the angle of orientation {LED lamp possible change of beam distribution}

The present invention relates to an LED lamp, and more particularly, having an optical unit having different directing angles, changing a directing angle that can be used for various purposes by changing the directing angle of light emitted from the LED through the rotation of the cover. This relates to a possible LED lamp.

Recently, LEDs have been used as light sources in many fields due to various characteristics such as high efficiency and clarity. Among them, the replacement of LED lamps with LEDs applied to conventional lamps in the lighting field is being made rapidly.

Such a conventional LED lamp is capable of irradiating light to the outside at a single directivity angle. That is, one LED lamp is configured to be irradiated with only one direction angle determined at the time of production.

Therefore, the user had no choice but to purchase LED lamps having a suitable directivity angle according to the use.

As a result, the user is economically burdened by using a plurality of expensive LED lamps according to a purpose, and there is a difficulty in managing several LED lamps.

The present invention is to solve the problems as described above, equipped with optical parts having different directivity angles by changing the directivity to be irradiated to the outside through the rotation of the cover change the orientation angle that can implement a variety of orientation angles in one product This is to provide a possible LED lamp.

In order to achieve the above object, the present invention includes a housing having an internal space having an open top and a substrate on which a plurality of LEDs are mounted in the internal space; A cover rotatably coupled to an open upper end of the housing; And a plurality of optical parts disposed in the circumferential direction of the cover to determine a directing angle of light generated from the LED and to emit to the outside, wherein the plurality of optical parts are repeatedly arranged with different directing angles. The direction of change of the direction of the light emitted to the outside through the rotation of the cover to provide an LED lamp capable of changing the direction angle.

In this embodiment, the cover is provided with a engaging portion extending a predetermined length downward along the rim and the engaging piece protruding inward from the engaging portion, the upper side of the housing is formed in a predetermined depth cut along the outer circumferential surface is inserted into the engaging piece Guide grooves may be provided.

In this embodiment, the engaging piece may be formed partially or entirely along the circumferential direction of the engaging portion.

In this embodiment, at least one protrusion and a groove corresponding to each other are formed on the inner surface of the coupling portion and the outer circumferential surface of the housing so that the rotation of the cover can be precisely positioned.

In the present embodiment, the upper surface of the cover may be provided with an angle display portion for displaying the directing angle of the optical portion, the top position of the housing may be provided with a position display portion corresponding to the angle display portion.

In the present embodiment, the number of LEDs mounted on the substrate may be determined by the following equation.

Where N = number of LEDs, X = number of branches of the angle of orientation, and Y = total number of optics.

In the present embodiment, the optical unit may comprise a single set of optical units having different orientation angles, and the single set may be provided in the same number as the number of LEDs mounted on the substrate.

In the present embodiment, the optical unit may be provided as a lens having a constant directivity angle.

In the present embodiment, the lens can be coupled to the mounting hole formed in the cover individually.

In the present embodiment, the optical unit may be provided as a group lens in which a plurality of lenses are mounted on the mounting plate so that the mounting plate may be fixedly coupled to the inside of the cover.

In the present embodiment, the lens may be provided with an incision groove formed at a predetermined depth in the upper end to prevent contact with the LED when the cover is rotated at the lower end.

In the present embodiment, the optical unit may be provided as a reflector having a predetermined direction angle.

In this embodiment, the reflector may be coupled to the mounting hole formed in the cover individually.

In the present embodiment, the optical unit may be provided as a group reflector in which a plurality of reflectors are mounted on the mounting plate so that the mounting plate may be fixedly coupled to the inside of the cover.

In the present embodiment, the reflector may be provided with a cutting groove formed at a predetermined depth in the upper end to prevent contact with the LED when the cover is rotated at the lower end.

In the present embodiment, the housing may be provided with a connecting portion for receiving power from the outside at the lower end.

According to the present invention, the optical parts having different directing angles are provided to change the directing angles irradiated to the outside through the rotation of the cover, so that a variety of directing angles can be realized in a single product.

1 is an overall perspective view of the LED lamp capable of changing the directivity angle according to the present invention.
2 is a longitudinal cross-sectional view and a partial cutaway view in FIG.
3 is a partial cutaway view showing the inside of the guide groove in FIG.
Figure 4 is a view showing the various forms of the optical unit applied to the LED lamp capable of changing the directivity angle in accordance with the present invention.
5 is a state diagram of the use of the LED lamp can be changed in the directivity angle in accordance with the present invention, a) is when the orientation angle is 30 degrees, b) is the orientation angle is 60 degrees, c) is a case where the orientation angle is 90 degrees drawing.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

In order to facilitate understanding of the present invention, the same reference numerals will be used to denote the same constituent elements even if they are shown in different drawings.

LED lamp 100 (hereinafter referred to as "LED lamp") that can be changed in the directivity angle in accordance with a preferred embodiment of the present invention is provided with a plurality of optical parts (130,230) are set to have different directivity angle, cover By determining the directing angle of the light emitted to the outside through the rotation of the 120 has a technical feature that can be changed in various ways according to the intended use of the LED lamp 100 in accordance with the intended use.

The LED lamp 100 includes a housing 110, a cover 120, and optical units 130 and 230.

The housing 110 constitutes an external shape of the LED lamp 100 and has an internal space 116 whose upper portion is opened to allow the substrate 114 and the power supply 140 to be embedded therein. That is, as shown in FIG. 2, a power supply unit 140 is provided to receive power from the outside to supply power to the substrate 114, and a substrate 114 electrically connected to the power supply unit 140 at an upper side thereof. ) Is installed.

The housing 110 may be made of a metal material having excellent thermal conductivity, such as aluminum, so as to emit heat generated when the LED 115 emits light to the outside. A plurality of heat radiation fins 117 may be provided to increase.

In addition, the upper outer peripheral surface of the housing 110 is provided with a guide groove 111 is formed in a predetermined depth in the radial direction. The guide groove 111 is coupled to the coupling portion 121 provided in the cover 120, the rotation of the cover 120, the coupling portion 121-in more detail the direction of movement of the engaging piece 122 You will be guided.

Accordingly, the user can rotate the cover 120 to change the light generated from the LED 115 through the optical unit 130,230 determined the directivity angle to the desired directivity angle to emit to the outside.

On the other hand, the lower end of the housing 110 is provided with a socket-shaped connecting portion 150 to receive power from the outside to supply power to the power supply unit 140 side. The connection portion 150 is fitted into the socket of the incandescent lamp is coupled.

The substrate 114 is a substrate member that is electrically connected to an external power source supplied through a power cable (not shown), and has a pattern circuit that is set in advance so as to be electrically connected to the LED 115. In addition, a plurality of LEDs 115 for generating light are mounted on the substrate 114. That is, the light generated by the LED 115 is emitted to the outside to achieve illumination.

In this case, the LEDs 115 mounted on the upper surface of the substrate 114 are mounted in an appropriate number according to the number of branches X of the directivity angle emitted to the outside, and each of the LEDs 115 has a predetermined interval. Spaced apart.

Here, the LED 115 may be provided as a chip on board (COB) form in which a plurality of LED chips are integrated on a board to form a light emitting chip, or as an LED element having a package form including a lead frame or a combination thereof. Can be. In addition, the light generated by the LED 115 may be one or more of red, blue, green, or white light.

On the other hand, the number of LEDs 115 mounted on the substrate 114 is determined by the following equation.

(N = number of LEDs, X = number of branches of angle of view, Y = total number of optics.)

That is, to illustrate the case where the two display angles through the LED lamp 100 according to the present invention illustratively, there are two, four, six optical units 130, 230 mounted on the cover 120 The number of LEDs 115 mounted on the substrate 114 may be determined as one, two, three, or four.

Similarly, in the case where the three directing angles are to be displayed through the LED lamp 100, the number of the optical units 130 and 230 mounted on the cover 120 is three, six, nine, twelve, etc. The number of LEDs 115 mounted on the substrate 114 is determined to be one, two, three, or four.

In the present specification, for convenience of description, the LED lamp 100 according to the present invention in the drawings and the description of the number of branches of the orientation angle is three, the optical unit 130, 230 provided in the cover 120 is nine, the substrate 114 It will be described on the assumption that the case is provided with three LEDs 115 mounted on the).

Of course, three orientation angles, nine optical units 130, 230 and three LEDs 115 are exemplary, and it can be seen that the number can be provided in various numbers according to Equation 1 according to the usage and design method. .

The cover 120 is provided to cover the open upper portion of the housing 110, and a plurality of optical parts 130 and 230 are disposed inside the cover 110 so as to change the direction of the light generated by the LED 115 to be emitted to the outside. ) Is provided.

The cover 120 is rotatably provided on the upper part of the housing 110, and when the directing angle of the light emitted to the outside is set differently, the directing angle of the light emitted to the outside by rotating the cover 120 in one direction. Will change.

To this end, the cover 120 is provided with a coupling portion 121 extending a predetermined length downward along the edge of the body made of a circular, the engaging piece 122 is formed to protrude a predetermined height inside the coupling portion 121 ) Is provided so that the engaging piece 122 is engaged with the guide groove 111.

Here, the engaging piece 122 may be formed partially along the periphery of the end portion of the coupling portion 121, or may be formed as a whole.

As a result, the direction of movement of the engaging piece 122 that is moved along the guide groove 111 when the cover 120 is rotated is guided, thereby easily changing the direction angle emitted to the outside through the rotation of the cover. Will be.

At this time, the protrusion 112 and the groove 123 corresponding to each other are formed on the inner surface of the coupling portion 121 and the outer circumferential surface of the housing which is in contact with the inner surface (see FIG. 3). By increasing the friction force by the combination of the protrusion 112 and the groove 123 at the time, it is possible to accurately rotate by the angle desired by the user. That is, when the orientation angle is three, the protrusions 112 are spaced apart at an angle of 30 degrees along the circumferential direction so that the protrusions 112 and the grooves 123 are joined whenever the cover is rotated by 30 degrees. .

Through this, the user can easily identify whether the optical unit (130,230) is located on the top of the LED 115 by easily recognizing the rotation angle of the cover (120).

Alternatively, the upper surface of the cover 120 is provided with an angle display portion 124 in the form of a letter or arrow indicating the orientation angle of the optical unit (130,230) and the corresponding position display portion 113 corresponding to the housing 110 On the outer circumferential surface of In this way, the user can determine whether the angle display unit 124 and the exact position display unit 113 match to easily determine whether the optical unit 130 or 230 having the desired angle of orientation is positioned on the upper part of the LED 115. It can also be identified.

On the other hand, the cover 120, the outer peripheral surface of the coupling portion 121 to increase the frictional force with the user's body in contact with the rotation of the cover 120 to prevent the slip to prevent the slipping to be smooth rotation 125 May be additionally provided.

As shown in FIG. 3, the anti-slip part 125 may be repeatedly formed along the outer circumferential surface of the ridge formed to protrude in a direction perpendicular to the rotational direction of the cover 120.

The optical units 130 and 230 are mounted inside the cover 120 to determine a directing angle of light generated from the LEDs 115, and a plurality of optical units 130 and 230 are provided to have different directing angles. That is, the plurality of optical units 130 and 230 inject light generated from the LEDs 115 to adjust to a predetermined predetermined direction angle and emit the light to the outside.

The optical units 130 and 230 are manufactured in a state in which a directing angle is determined so that the incoming light can be emitted to the outside at a predetermined angle such as 30 degrees, 60 degrees, and 90 degrees. Such optical units 130 and 230 are arranged in succession along the circumferential direction inside the cover 120. In addition, the optical units 130 and 230 may include a single set S of optical units 130 and 230 having different orientation angles, and the number of LEDs 115 on which the single set S is mounted on the substrate 114. It is provided to have the same number as.

For example, when the optical parts 130 and 230 are provided in nine pieces having three different directing angles, the single set S may include the first optical part 131 having a directing angle of 30 degrees and the first having a directing angle of 60 degrees. The second optical unit 132 and the third optical unit 133 having a directing angle of 90 degrees are provided, and the first optical unit 131-the second optical unit 132-the third optical unit 133 along the circumferential direction )-First optical part 131-Second optical part 132-Third optical part 133-First optical part 131-Second optical part 132-Third optical part 133 Are arranged sequentially.

Accordingly, the optical units 130 and 230 having the same directivity are always disposed on the plurality of LEDs 115 mounted on the substrate 114, so that the light generated from the LEDs 115 may cause the optical units 130 and 230 to pass through. Through the same direction angle is emitted to the outside.

Referring to FIG. 5A, first optical parts 131 having a directing angle of 30 degrees are disposed on the plurality of LEDs 115, respectively.

In this case, when the user wants to change the directivity angle of the light emitted to the outside, when the user rotates the cover 120 in the clockwise direction, the second optical unit has a directivity angle of 60 degrees on the plurality of LEDs 115. 132 are disposed respectively to change the orientation angle (see FIG. 5B).

Similarly, when the directivity of the light emitted to the outside is to be changed to 90 degrees, the user rotates the cover 120 in the same direction again to have a third optical portion having a directivity of 90 degrees on the plurality of LEDs 115. The directivity angles are changed by arranging the 133s respectively. The first optical unit 131 having a directing angle of 30 degrees is disposed on the plurality of LEDs 115, respectively, so that the directing angle of light emitted to the outside may be changed.

Meanwhile, the optical units 130 and 230 may be provided in various forms as shown in FIG. 4.

That is, as illustrated in FIG. 4A, the plurality of optical units 130 may be provided in the form of a lens, and a plurality of optical units 130 may be individually mounted in mounting holes 134 formed through the cover 120. As described above, a plurality of lenses may be provided in the form of a group lens mounted on the mounting plate 135 such that the mounting plate 135 may be fixedly coupled to the cover 120.

In addition, as shown in FIG. 4C, the plurality of optical units 230 may be provided in the form of a reflecting mirror so that a plurality of optical units 230 may be individually mounted in mounting holes 134 formed in the cover 120. As described above, a plurality of reflecting mirrors may be provided in the form of a group reflector mounted on the mounting plate 135 so that the mounting plate 135 may be fixedly coupled to the cover 120.

On the other hand, when the optical unit 230 is provided in the form of a reflector, the transparent cover to prevent the LED 115 is exposed to the outside when the LED 115 is disposed on the lower portion of the reflector to protect the outside (Not shown) may be further provided.

Here, the fixing coupling of the mounting plate 135 and the cover 120 is a variety of methods such as adhesive bonding through the adhesive, fixing coupling through the fixing member such as a screw bolt and interference fitting that the fitting jaw is inserted into the groove portion. It can be used, it is noted that a variety of known methods in which the mounting plate 135 and the cover 120 is fixed can be used.

At this time, the lower end of the lens and the reflecting mirror is provided with a cutting groove 136 formed to cut a predetermined depth to the upper to prevent contact with the LED 115 protruding a certain height to the top when the cover 120 is rotated. Can be.

That is, when the cutting groove 136 is formed in the lower end of the lens and the reflector in the same direction as the rotation direction of the cover 120 to rotate the cover 120 to change the orientation angle of the LED 115 The upper portion is to pass through the incision groove 136.

Through this, it is possible to prevent the damage by facilitating the rotation of the cover 120 and at the same time prevent the lower end of the optical unit 130, 230 and the upper side of the LED 115 is in direct contact with each other.

According to the present invention, the optical parts having different directing angles are provided to change the directing angles irradiated to the outside through the rotation of the cover, so that the various directing angles can be realized as a single product, thereby making it possible to use them for various purposes.

Although specific embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to such specific structures. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. However, equivalents, replacements, and modifications through simple design variations or modifications are all apparently within the scope of the present invention.

In addition, terms including ordinal numbers such as first and second in the description process should be understood as terms describing various elements. That is, the terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and the second component may also be referred to as the first component. The term and / or includes any one of a plurality of related items or a combination of a plurality of related items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include the plural meanings unless the context clearly dictates them. As used herein, the terms "comprise", "have", "include", and the like are intended to indicate that there is a feature, number, step, operation, component, part, or a combination thereof described in the specification, and one or It is to be understood that no other features or numbers, steps, actions, components, parts, or combinations thereof are excluded in advance.

When a component is said to be "connected", "coupled", or "connected" to another component, it may be directly connected to the other component, but other components may be present in between. It should be understood. On the other hand, when a component is said to be "directly connected" or "directly coupled" to another component, it should be understood that there is no other component in between.

100: LED lamp whose direction can be changed
110: housing 111: guide groove
112: protrusion 113: position display portion
114: substrate 115: LED
116: interior space 120: cover
121: engaging portion 122: locking piece
123: groove portion 124: angle display portion
125: anti-slip unit 130,230: optical unit
131: first optical part 132: second optical part
133: third optical unit 134: mounting hole
135: mounting plate 136: incision groove
140: power supply unit 150: connection unit

Claims

A housing having an upper open space and a substrate on which a plurality of LEDs are mounted in the internal space;
A cover rotatably coupled to an open upper end of the housing; And
And a plurality of optical parts disposed in the circumferential direction of the cover to determine a directing angle of light generated from the LED and to emit the light to the outside.
The optical unit may change the orientation angle of the LED lamp, characterized in that a plurality of different orientation angles are repeatedly arranged to determine the orientation angle of the light emitted to the outside through the rotation of the cover.

The method of claim 1,
The cover is provided with a engaging portion extending a predetermined length downward along the rim and the engaging piece projecting inward from the engaging portion, the upper side of the housing is formed in a predetermined depth cut along the outer peripheral surface is provided with a guide groove into which the engaging piece is inserted LED lamps capable of changing the direction angle characterized in that.

The method of claim 2,
LED is capable of changing the direction angle, characterized in that the engaging piece is formed in part or entirely formed along the circumferential direction in the engaging portion.

The method of claim 2,
At least one protrusion and a groove corresponding to each other are formed on the inner surface of the coupling portion and the outer circumferential surface of the housing to change the orientation angle of the LED lamp.

The method of claim 1,
The upper surface of the cover is provided with an angle display portion for displaying the directing angle of the optical portion, the orientation angle changeable LED lamp, characterized in that the position display portion corresponding to the angle display portion is provided on the upper side of the housing.

The method of claim 1,
The number of LED mounted on the substrate is determined by the following equation LED lamps capable of changing the orientation angle.

Here, N = number of LEDs, X = number of branches of the directivity angle, Y = the total number of the optical portion.

The method of claim 1,
The optical unit of claim 1, wherein the optical unit having a different direction angle constitutes a single set, the single set is provided with the same number as the number of LED mounted on the substrate.

The method of claim 1,
LED is capable of changing the orientation angle, characterized in that the optical unit is provided with a lens having a predetermined orientation angle.

The method of claim 8,
LED lamps capable of changing the direction angle, characterized in that the lens is individually coupled to the mounting hole formed through the cover.

The method of claim 8,
The optical unit may include a group lens having a plurality of lenses mounted on the mounting plate such that the mounting plate is fixedly coupled to the inside of the cover.

11. The method according to claim 9 or 10,
The lens is LED lamp capable of changing the direction angle, characterized in that the lower end is provided with a cutting groove is formed in a predetermined depth in the upper portion to prevent contact with the LED when the cover is rotated.

The method of claim 1,
LED is capable of changing the orientation angle, characterized in that the optical unit is provided with a reflector having a predetermined orientation angle.

13. The method of claim 12,
The reflector is an LED lamp capable of changing the direction angle, characterized in that coupled to the mounting hole formed in the cover individually.

13. The method of claim 12,
Wherein the optical unit is a plurality of reflectors are provided as a group reflector mounted on the mounting plate is a mounting angle changeable LED lamp, characterized in that the mounting plate is fixedly coupled to the inside of the cover.

The method according to claim 13 or 14,
The reflector is an LED lamp capable of changing the direction angle, characterized in that the lower end is provided with a cutting groove which is formed to be cut to a predetermined depth to prevent contact with the LED when the cover is rotated.

The method of claim 1,
The housing has an LED lamp capable of changing the direction angle, characterized in that the lower end is provided with a connection for receiving power from the outside.