KR20110116452A - Light generating device - Google Patents

Abstract

Provided is a variable angle light generating device using a light emitting element (LED) as a light source and used as a light fixture or a light source unit of a backlight unit (BLU) of a display device.
In one embodiment, the variable angle variable light generator includes a device casing, and a light source including LED packages included in the device casing; And a rotatable lens module provided at one or more of the device casings in a rotatable manner and having lens elements provided to enable light directing angle adjustment of the unit LED package.
According to the present invention, it is possible to implement a variety of light directing angles according to the user's needs or the environment of using the device to provide various types of lighting or display effects, in particular to provide a variety of visual or design effects as a device An improved effect can be obtained which makes it possible to reduce the installation costs of the installation.

Description

Directional angle variable light generating device {Light Generating Device}

The present invention relates to a light generating device that can be used as a light source (LED) as a light source and can be used as a light source (unit) of a backlight unit (BLU) of a luminaire or a display device. According to the present invention, it is possible to implement various light directing angles, thereby providing various types of lighting or display effects, and in particular, to provide various visual or design effects as one device, thereby reducing the installation cost of lighting fixtures. A directed angle variable light generating device.

Recently, a lighting device or display device using a light-emitting diode (hereinafter, referred to as 'LED'), which is rapidly increasing in use due to low cost and high efficiency of light emission, for example, a display device. Back Light Units (hereinafter referred to as 'BLU') are known.

On the other hand, although such LED light source is slightly different depending on the package or module form, it basically has a light source distribution on the premise of equal diffusion of light.

Therefore, various types of optical elements (parts) may be added and used in accordance with the intended use.

For example, although not shown in a separate drawing, the lens element may be added to the unit LED package constituting the LED module, or separately or in addition, and the (optical) lens element (cell) may be disposed at a predetermined distance from the LED package. Is to design the desired brightness and light directivity angle,

Of course, it is also possible to configure a device (system) or module by arranging a plurality of unit LED packages and lens elements.

On the other hand, a variety of conditions are required for various uses in actual use of lighting fixtures or BLU, but the most important of the performance specifications required for most lighting fixtures or BLU will be the brightness and the direction of light (light distribution).

However, in the case of a display device such as a luminaire or a BLU which uses most LEDs as a light source, the arrangement or position of the lens elements after the installation of the package element or the lens element (part) arranged separately is completed. Or it was impossible to change the angle of light through it.

Therefore, in the conventional case, it was practically difficult to change and adjust the light directivity angle to a desired angle in response to various uses of a luminaire or a BLU.

For example, there is no known luminescent light fixture or BLU display device that makes it possible to easily adjust the light directing angle of an LED light source in a desired pattern, in part or in general, through external operation or signal during use of a luminaire or display. will be.

SUMMARY OF THE INVENTION The present invention has been proposed to solve the above-mentioned conventional problems, and an object thereof is to provide a variable angle light-generating device capable of realizing various light directing angles according to a user's request or a device use environment. .

Another objective aspect of the present invention is to provide a variety of lighting or display effects in a single device through a variable adjustment of the light directing angle, through which the angle-specific variable type light generating device to reduce the installation cost of the device, in particular Is in providing.

The present invention as a technical aspect for achieving the above object, the device casing;

A light source consisting of LED packages provided in the device casing; And,

A rotatable lens module provided in the device casing with at least one rotatable lens element and having lens elements provided to enable light directing angle adjustment of the unit LED package;

It provides a variable beam angle light generating device configured to include.

Preferably, at least one of the heat dissipation means on the light source side and the diffusion plate on the rotational lens module side is provided on one side and the other side of the device casing.

More preferably, the rotatable lens module is provided to be rotatable at an angle corresponding to the arrangement of the unit LED package along the guide provided in the device casing through a drive source associated with the device casing.

At this time, the drive source, the gear unit provided in the rotating lens module; And,

A drive gear connected to a motor or an externally operated operation lever associated with the device casing and engaged with the gear part;

As shown in FIG.

In addition, the device casing is further provided with a cover body surrounding the drive source, the drive source is arranged on one side or both sides of the device casing corresponding to the number of the rotating lens module stacked on the device casing.

Preferably, the unit LED package is provided with a first lens element, the second lens element of the unit lens module or the second to third lens elements of the plurality of lens modules according to the number of device casing stacking of the rotatable lens module. Including, the light directing angle is configured to vary in the longitudinal combination of the first to second lens elements or the first to third lens elements.

More preferably, the second to third lens elements are formed in different shapes based on the longitudinal direction corresponding to the unit LED package.

In this case, the rotatable lens module is provided as a molded part of a circular plate, and the unit rotatable lens module includes a plurality of unit lens cells in which a plurality of lens elements formed in different shapes are configured in the same pattern, and the unit lens The cells are arranged corresponding to the unit LED package.

More preferably, the unit lens cell of the lens module is a combination of at least two of the convex lens, the concave lens, and the opening provided on the inner surface or the surface of the lens module.

More preferably, the unit lens cells are arranged in a predetermined pattern in the radial direction of the lens module corresponding to the rotation angle of the lens module.

As described above, the variable angle light-generating device of the present invention implements a variety of optical angles in one device, and provides an effect of simplifying device operation according to a user's requirements and device usage environment.

For example, the present invention can reduce the number of device installations in the case of lighting equipment, thereby enabling cost reduction.

In addition, by implementing various light directing angles in one device, it is possible to implement a variety of light emission forms, it will be possible to create an optimal viewing angle and atmosphere.

In addition, since it is provided with a multifunctional luminaire, it is possible to produce a variety of lighting, which will make it possible to optimally form the device use environment.

Finally, it is possible to respond sensitively to temperature changes when using the device in areas with severe climate change.

1 is a block diagram showing a variable angle of view light generation device according to the present invention
2 is a plan view of FIG. 1
3 is a configuration diagram showing another modified example of the apparatus of FIG.
4 is a top view of FIG. 3
Figures 5a to 5c is an operating state diagram showing the change in the light directivity angle according to the longitudinal arrangement of the lens elements of the LED package and one or more laminated lens module in the present invention device
6a to 6e are main views showing various embodiments of the unit lens elements provided in the lens module in the present invention device
7A to 7C are main plan views illustrating various forms of the inventive unit lens element of FIG. 6.
8 is a perspective view showing a state using the light generator of the present invention as a lighting fixture

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, FIGS. 1 to 4 show a variable angle light-generating device 1 according to the present invention. 1,2 and 3 and 4 show the apparatus of the present invention of the first and second embodiments, respectively.

For example, as illustrated in FIGS. 1 to 4, the light generating device 1 of the present invention includes a device light source 30 and a light source 30 composed of LED packages 32 included in the device casing. And a rotatable lens module 70 provided with the lens elements 50 rotatably provided in the device casing 10 and provided to enable light directing angle adjustment of the unit LED package. Can be.

Therefore, in the directivity angle variable light generator 1 of the present invention, the light generated from the LED package 32 of the light source 30, the lens module, one or two are arranged in the device casing, as shown in Figs. While passing through the lens elements 50 of 70, the light directing angle can be changed to various angles, and in particular, such a light directing angle change can be realized through automatic mechanical operation in the present invention.

At this time, as shown in Figure 1, the LED package 32, as known, the LED 32b is mounted on the base 32a via the filler 32c, and the filler 32c may optionally have a first. Lens element 34 may be formed.

On the other hand, Figure 5 shows the light directivity angle adjustment state of the various angles through the apparatus of the present invention, first to explain the light directivity angle variable adjustment of the present invention based on FIG. Is as follows.

As shown in FIG. 5A, the light generated from the LED package 32 passes through the first lens element 34 of the package and the second lens 50a of the lens module on the upper side thereof, and has a light directing angle of 120. °-> 60 ° is to be released through the diffusion plate 110.

That is, as shown in Figure 5a, the light generated from the LED package 32 is the first lens element 34 provided in the unit LED package 32 and the second lens element of the convex structure of the lens module on the upper side That is, while passing through the convex lens 50a, the light directing angle is adjusted to 120 °-> 60 ° and is emitted through the diffusion plate 110.

Next, as shown in FIG. 5B, the light generated from the LED package 32 is the first lens element 34 provided in the unit LED package 32 and the second lens element of the concave structure of the lens module on the upper side thereof. That is, while passing through the concave lens 50b, the light directing angle is adjusted to 120 °-> 160 ° and is emitted through the diffusion plate 110.

Finally, as shown in FIG. 5C, the light generated from the LED package 32 includes the first lens element 34 provided in the unit LED package 32 and two lens modules toward the image as shown in FIG. 4. Through each of the convex and concave second and third lens elements of the concave structure, i.e., the convex lens 50a and the concave lens 50b, the light directing angle is adjusted to 120 °-> 60 °-> 80 ° and diffused. Emitted through plate 110.

Therefore, as can be seen from Figs. 5A to 5C, the direct-orientation angle variable type light generating apparatus 1 of the present invention, as described in detail below, is provided with a first or rotatable inside of the device casing 10. When the lens elements 50 provided in the second lens modules 70 are arranged in a different shape in the longitudinal direction corresponding to the first lens element 32 of the LED package 32 with a concave, convex lens or the like suitable for the longitudinal direction, The light directivity angle is adjustable at a wide variety of angles.

For example, in the case of FIG. 5A, since the light diffusion distribution is smaller than that of FIG. 5B, when the device of the present invention is used as a luminaire, various types of light illumination may be realized.

On the other hand, as described above, the reference numerals 32 and 50 denote the lens elements of the LED package and the lens module, and 50a, 50b, etc. denote specific lenses such as convex lenses and concave lenses. Indicates.

Next, a description will be given of the rotational configuration of the rotational lens module 70 to enable a combination configuration of the lens elements to the various lenses in the apparatus according to the present invention.

First, as shown in FIGS. 1 and 3, the heat dissipation means is provided on one side and the other side of the device casing 10 of the present invention, that is, the light source 30 side in which the unit LED packages are arranged and the rotatable lens module side opposite thereto. (90) For example, a heat sink and a diffusion plate 110 are provided to alleviate nonuniformity of light and to realize an even distribution of light.

That is, since the heat dissipation means 90 constitutes the light source 30 of the unit LED package 32 of the present invention, it will serve to remove the heat generated during the operation of the device, in particular used as a lighting fixture In this case, since the light generating capacity of the unit LELD package should be secured, it is preferable that such a heat radiating means is provided.

Next, as shown in Figures 1 and 3, in the apparatus of the present invention may be provided with one or a plurality of rotating lens module 70, in the case of the actual lens module is excessively stacked, there is a limit to the light direction angle adjustment In addition, because of the excessive reflection of light, since the light efficiency can be reduced, it is preferable to arrange one or two lens modules, but is not necessarily limited thereto.

On the other hand, although schematically shown in the drawings, it is natural that the distance between the unit lens modules and the first lens element of the LED package needs to be properly adjusted in consideration of the light directivity.

At this time, as shown in Figures 1 and 3, in the apparatus of the present invention, the circular guide 12 is provided in accordance with the number of installation of the lens module 70 disposed in the device casing 10, the synthetic resin molding therein The lens module 70 provided as a circular plate (plate material) is assembled to be rotatable.

In addition, in the apparatus of the present invention, the lens module 70 provided to be rotatable at an angle corresponding to the arrangement of the unit LED package along the guide 12 through the driving source 130 associated with the device casing 10 is rotatable. do.

That is, as shown in FIGS. 1 to 4, the driving source 130 includes a gear unit 132 provided with an integral or separate member assembled at a corner portion of the rotational lens module 70, and the device casing 10. And a drive gear 136 which is rotationally operated as a motor 134 disposed in association with each other, so that the lens module is rotated clockwise or counterclockwise along a guide according to the direction in which the motor 134 is driven. The gear part and the gear transmit the motor driving force.

1 and 2, in the case of one lens module, the gear unit 132 and the driving gear 136 may be installed in a structure in which the motor is horizontally connected in the form of a bevel gear.

Alternatively, as shown in FIGS. 3 and 4, in the case of a plurality of lens modules, the drive gear 136 of the pinion gear meshes with the gear unit 132, and the motor rotation shaft may be connected to the gear unit 132.

At this time, it is preferable to reduce the device volume by providing the motor, the gear portion, and the drive gear as compact as possible, and the power transmission portion of the guide 12 is cut off.

On the other hand, although not shown in the drawing, in place of the motor rotation shaft to the drive gear 136 in Figure 3, if the user directly operates the operating lever (not shown), the lens module is rotated in the guide when the operation of the operation lever is improved. Can be. In this case, the unit cost can be lowered.

However, preferably in the drawings, if a known electric control circuit is configured to give an operating signal to an apparatus remote control unit for controlling the motor with an external remote controller, the apparatus of the present invention controls the motor drive very simply and thereby the lens. The rotation of the module can be controlled.

That is, Figure 8 shows the case of using the device as a lighting fixture, in the case of a lighting fixture that is usually installed on the ceiling, manual operation for adjusting the light directing angle described above is impossible, as described above, If the driving of the motor 134 is controlled by the light source, the light directional angle may be easily adjusted to create various lighting environments.

On the other hand, as shown in Fig. 4, when two lens modules are arranged in the device casing, each individual rotation control is necessary, so that the same drive source is placed on both sides of the stationary, and the gear unit arrangement of the lens module is aligned with the position of the drive gear. You can adjust it.

More preferably, as shown in Figs. 1, 3 and 8, the cover body 150 surrounding the drive source described above is further provided in the device casing 10.

Next, the lens module 70 provided to be rotatable in the apparatus using the driving source 130 (or the driving source of the operation lever) described so far will be described with reference to the arrangement of the second and third lens elements 50 provided therein. However, the following description will be based on the apparatus of the second embodiment of the present invention of FIGS. 3 and 4 having two lens modules.

Therefore, in this case, the apparatus of the present invention includes the first and second lens elements 34 of the unit LED package 32 and the first and second pivotal lens modules 70 respectively. These are combined in the longitudinal direction to implement the change of orientation angle as shown in FIG. 5 described above.

In this case, since the first lens element of the actual LED package is not replaceable, it is possible to change the structure of the second and third lens elements 50 that can be substantially positioned differently, and thus, various light directing angles as shown in FIG. 5. To adjust the angle.

On the other hand, as shown in Figures 2 and 4, in the unit rotational lens module provided as a molded part of the circular plate (plate) which is the easiest form of rotation, a plurality of lenses 50a, 50b formed in different forms A plurality of unit lens cells 50 ', in which 50c is formed in the same pattern, is provided.

That is, as can be seen in Figure 2, the unit lens cell 50 'indicated by the dotted oval, for example, the convex lens 50a, the concave lens 50b and the opening portion 50c is provided in a patterned form, and A plurality of lens cells having the same pattern are provided in one unit lens module.

In this case, it is important that the unit lens cells 50 ′ have a larger distance between the lenses of the unit lens cells from the center side to the outer side because the rotation angle of the circular lens module is different in the radial (radius) direction. .

That is, in FIGS. 2 and 4, when the lens module is rotated by the motor driving, the rotation angles of the lens cells of the center side and the rotation angles of the outer lenses are different. The spacing of the lenses must be adjusted according to their position.

In addition, one unit lens cell 50 'is arranged to correspond to one unit LED package 32, and therefore, it is necessary to arrange the LED package to correspond to the lens arrangement of the unit lens cell.

Of course, although the unit lens cells are shown in three rows from the center of the lens module to the outside, such a number of columns can be appropriately adjusted.

On the other hand, as shown in Figures 1 and 3, the center of the lens module of the present invention can be assembled with a central shaft 72, the nut is fastened across the diffusion plate 110 and the heat radiating means 90 vertically As illustrated in FIG. 1, the central shaft 72 and the lens module contact portion may be provided with a bearing element 74 or a guide ring to reduce wear during rotation of the module.

However, in the present invention, the actual rotation angle is very small regardless of the rotation direction of the lens module. For example, in FIG. 2, the lenses of the unit lens cell 50 ′ only need to be rotated at an angle corresponding to the interval, in particular, three lenses. When the unit lens cell 50 ′ is configured, only the angle between the center lens (for example, the convex lens 50a and the lenses 50b and 50c on both sides may be rotated clockwise or counterclockwise). Therefore, the rotation angle of the lens module is not large, and furthermore, it is not adjusted continuously and the optical directivity angle is adjusted, but is adjusted as necessary, so that the load of the parts of the lens module and the like caused by the rotation of the lens module in the present invention is not large. not.

At this time, in the device of the present invention, the component parts, that is, the device casing, guide, cover body, etc. may be made of a suitable material, in order to reduce the weight of the device it would be preferable to produce a high-strength synthetic resin molded.

6A and 6E illustrate various types of lenses constituting the unit lens cell 50 'of the lens module of the present invention.

For example, as shown in FIG. 6A, the convex lens 50a, the concave lens 50b, and the opening portion 50c are formed in one existing unit lens cell 50 ′ when the molded lens module is molded. It is possible.

In addition, according to the molding method, a unit lens cell may be configured by combining the convex lens 50a ', the concave lens 50b', and the non-opening portion 50c 'formed on the surface of the lens module as shown in FIG. 6B. 6C and 6D, the triangular convex lens 50a ", the triangular concave lens 50b", the convex elliptical lens 50d ', the concave elliptical lens 50b', etc. can be combined into one lens cell. It is also possible.

Alternatively, as shown in FIG. 6E, the unit lens cell may be configured by combining the uneven lens portion 50e and the ring-shaped lens portion 50f on the module surface.

That is, the apparatus of the present invention comprises at least the convex lens, the concave lens, and the opening portion of FIG. 6A as basic unit cells, but it is not difficult to use other types of lenses, and therefore the light directing angle adjustment range (shape) in the apparatus of the present invention. Can be adjusted to a wide range.

Next, Figure 7 shows the processing form of the lens element 50 provided in the lens module of the present invention, as shown in Figure 7a to 7c, it can be variously formed, such as square, star, triangular, convex, concave structure. .

For example, it is not difficult to integrally mold the various types of lens structures of FIGS. 6 and 7 in the molding of the round plate of the molding.

Therefore, although the variable angle directivity light generator 1 of the present invention basically implements variable adjustment of the directivity angle, it provides another advantage that various types of light itself can be realized.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 .... Directional variable light generator
10 .... Device Casing 12 .... Guide
30 ... light source 32 ... LED package
34 .... Package lens element 50 .... lens element of lens module
50 '.... Lens Cell 70 .... Rotating Lens Module
90 ... heat dissipation means 110 ... diffuser plate
130 .... Driving source 132 .... Lens module gear part
136 .... Drive Gear 150 ... Cover

Claims (10)

Device casing;
A light source consisting of LED packages provided in the device casing; And,
A rotatable lens module provided in the device casing with at least one rotatable lens element and having lens elements provided to enable light directing angle adjustment of the unit LED package;
Directional angle variable light generator configured to include.
The method of claim 1,
Provided on one side and the other side of the device casing,
And at least one of a heat dissipation means on the light source side and a diffusion plate on the rotational lens module side.
The method of claim 1,
The tiltable lens module may be rotatably provided at an angle corresponding to an arrangement of unit LED packages along a guide provided in the device casing through a drive source connected to the device casing.
The method of claim 3,
The drive source,
A gear unit provided in the rotational lens module formed of a circular plate of a molded product; And,
A drive gear connected to a motor or an externally operated operation lever associated with the device casing and engaged with the gear part;
Directional angle variable light generator, characterized in that configured to include.
The method of claim 4, wherein
The device casing is further provided with a cover body surrounding the drive source,
And the driving source is arranged on one or both sides of the device casing corresponding to the number of the rotating lens modules stacked on the device casing.
The method according to any one of claims 1 to 5,
The unit LED package is provided with a first lens element,
Including the second lens element of the unit lens module or the second to third lens elements of the plurality of stacked lens modules according to the number of device casing stacking of the rotatable lens module,
And a light directing angle varying in a longitudinal combination of the first to second lens elements or the first to third lens elements.
The method of claim 6,
And the second to third lens elements are formed in different shapes with respect to the longitudinal direction corresponding to the unit LED package.
The method of claim 6,
The rotatable lens module includes a plurality of unit lens cells in which a plurality of lens elements formed in different shapes are configured in the same pattern,
And the unit lens cells are arranged corresponding to the unit LED package.
The method of claim 8,
The unit lens cell of the lens module is a variable angle light-generating device, characterized in that consisting of a combination of at least two lens elements of the convex structure, concave structure and the lens elements provided on the surface or the lens module.
The method of claim 8,
And the unit lens cells are arranged in a predetermined pattern in a radial direction of the lens module corresponding to the rotation angle of the lens module.

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