KR100935991B1 - Lighting apparatus using light emitting device package - Google Patents

Abstract

PURPOSE: A lighting device is provided to increase an irradiation angle of a light by moving a position of a light source part including an LED package and a lens component. CONSTITUTION: An inner space of a main body(130) is divided into a first space and a second space. A lighting part(110) is arranged to the first space of the main body, and includes a plurality of light sources(111). Each light source includes a lens component(112), an LED package(113), and a heat dissipation substrate(115). A groove for receiving the LED package is formed to one surface of the lens component. The other surface of the lens component is formed into a square plane in order to emit the light of the LED package to outside. The heat dissipation substrate is faced with a bottom surface of the main body, and is arranged under the LED package. A power part(120) is arranged to the second space of the main body, and supplies a driving power of the lighting part.

Description

Lighting device using light emitting device {Lighting apparatus using light emitting device package}

The present invention relates to a lighting device using the LED package of the present invention, and more particularly to a lighting device that can improve the light irradiation amount using the LED package.

In general, a lighting device refers to a lighting facility installed along a sidewalk or a roadway for street safety or traffic safety, such as a street lamp. Such a lighting device illuminates an adjacent area where a lighting device such as a street light is installed by a lamp having a light source of a mercury lamp, a fluorescent lamp, a sodium lamp, or the like as a light source by lighting the fixture.

In recent years, LEDs having low power consumption and semi-permanent lifespan have been used as light sources for lighting devices in order to improve brightness and reduce power consumption. However, the lighting device using the LED has a problem due to light distribution and focusing of light due to the linear characteristics of the light emitted from the LED. Specifically, although the amount of light irradiated in the vertical direction to reach the ground is large, there is a problem that the amount of light irradiation in the horizontal direction is reduced. Accordingly, when installing a lighting device such as a street lamp, there is a problem that the installation interval is shortened to install a large number of lighting devices within the same distance.

In addition, in the case of a lighting device using the LED, there is a problem that glare occurs due to the linear characteristics of the light emitted from the LED. When such a lighting device is installed in the street lamp, it causes inconvenience to the pedestrians due to glare.

In addition, in the case of a general lighting device, a lighting configuration for emitting light and a power configuration for supplying power are provided at separate locations. For example, in the case of a street light, a power supply structure is installed at a lower portion of the street lamp stand that supports the lighting configuration, that is, a portion close to the ground. If a flood occurs due to the location of such a power configuration, the power configuration is flooded and need to be replaced unnecessarily, and there is a problem that an electric accident occurs due to easy access for pedestrians.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to form a lens element having a square light output surface on an LED package, whereby the overall brightness can be increased and the amount of light emitted in the horizontal direction can be increased. It is for providing a lighting device.

Further, another object of the present invention is to provide an illumination device capable of increasing the irradiation angle of light by moving the position of the light source portion including the lens element and the LED package.

Still another object of the present invention is to provide an illuminating device capable of reducing glare by surface treating the light output surface of the lens element for outputting light emitted from the LED package to the outside.

Further, another object of the present invention is to provide a lighting device that can ensure safety by placing a light source unit and a power supply unit including a lens element and an LED package in the main body of the lighting device.

Lighting device according to an embodiment of the present invention for achieving the above object, has an inner space surrounded by the upper surface, the side and the lower surface, the inner space is first and by the horizontal plate formed in the horizontal direction A main body divided into a second space; A tunnel structure disposed in the first space, the upper end portion consisting of an LED package, a quadrangular plane for outputting light emitted from the LED package, and a tunnel structure penetrating in one direction while having an inner upper surface convex to cover the LED package. A light source including a lens element formed of a groove for accommodating the LED package, the lens element comprising a lower portion configured to have a narrower width than the upper portion, and a heat dissipation substrate mounted on the lower portion of the LED package to face the lower surface of the main body; A plurality of lighting units; And a power supply unit disposed in the second space and electrically connected to the lighting unit to supply power for driving the lighting unit, wherein the plurality of lens elements are arranged such that the corners of the rectangular plane are in contact with each other.

In this case, the lower surface of the main body may include a curved passage formed at a position corresponding to the plurality of light sources.

On the other hand, the light source is located in the lower portion of the LED package and the circuit board connected to the LED package, the heat dissipation substrate is bonded to the lower portion of the circuit board to release heat, and one end to the lower central region of the heat dissipation substrate It is fixed and the other end further comprises a rotation axis which is located in the curved path to move along the curved path to rotate the heat dissipation substrate. In this case, the rotation axis may have a different length according to the positions of the plurality of light sources.

The heat dissipation substrate may include at least one of aluminum, silver, copper, and alloys thereof. Alternatively, the heat dissipation substrate may be plated with at least one of aluminum, silver, copper, and platinum on the insulation substrate.

The power supply unit may include a signal receiver configured to receive an on / off operation signal, and a power controller controlling power supply to the lighting unit according to an on / off operation signal of the signal receiver.

On the other hand, the LED package, the LED, a package body formed with a cavity of the concave shape at the top for mounting the LED, the first electrode and the second electrode is inserted into the package body and connected through the wire and the LED, and the It may include a convex shape LED lens including a phosphor material on the cavity of the package body.

In the present lighting apparatus, the groove included in the lens element may have a convex shape, and the square plane included in the lens element may be surface treated by a glucose or sand treatment. The lens element may include an acrylic resin.

According to the present invention, by increasing the brightness by forming a lens element having a square plane of light output surface on the LED package, it is possible to increase the overall brightness. In addition, it is possible to increase the irradiation angle of the light by changing the position of the light source unit including the lens element and the LED package.

On the other hand, it is possible to reduce the glare of the pedestrian by surface-treating the light output surface of the lens element for outputting light emitted from the LED package to the outside. In addition, the light source unit and the power source unit may be positioned in the main body of the lighting apparatus to prevent damage to the power source unit and ensure safety.

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

1 is a view showing a lighting device according to an embodiment of the present invention. Referring to FIG. 1, the lighting device 100 according to the present invention includes an lighting unit 110, a power supply unit 120, and a main body 130.

The main body 130 includes an upper surface, a side surface, and a lower surface, and includes an inner space formed by the upper surface, the side surface, and the lower surface. The lighting unit 110 and the power supply unit 120 are located in this internal space. In addition, a plurality of curved passages (not shown) are formed on the lower surface of the main body 130.

The lighting unit 110 includes a plurality of light sources 111 for outputting light. Referring to an enlarged view of a portion of the light source 111, each light source 111 may include a lens element 112, an LED package 113, a circuit board 114, a heat dissipation substrate 115, and a rotating shaft 116. Include.

The lens element 112 has a groove for mounting the LED package 113 and has a square plane for outputting light emitted from the LED package 113 to the outside on a surface opposite the groove. Reference is made to FIG. 2 for a more detailed description of the lens element 112. 2 is a perspective view of a lens element 112 applied to the present invention. Referring to FIG. 2, the lens element 112 has a groove H, and the LED package 113 may be mounted in the groove H. As shown in FIG. In this case, the groove H has a convex shape, and thus the shape of the groove H can more efficiently output the light emitted through the LED package 113. That is, the light extraction amount is increased by the groove H shape.

On the other hand, the lens element 112 has a quadrangular plane on the surface opposite the groove H to output the light emitted from the LED package 113 to the outside. In this case, the quadrangular plane can output light through the entire surface. In detail, the quadrangular plane extracts light through the entire surface, and the light is also extracted through the edge where the LED package 113 is not located in addition to the groove H region where the LED package 113 is located. Accordingly, the light extracted through the rectangular plane spreads not only in the vertical direction but also in the horizontal direction, thereby increasing the area to which the light is irradiated. In addition, the quadrangular plane of the lens element 112 is surface-treated by glue coating or sand treatment, so that the light emitted from the LED package 113 passes through the lens element 112, whereby the straightness characteristic is reduced. The glare can be improved. In addition, the lens element 112 includes a support 112a for supporting the lens element 12 in the corner region of the opposite surface of the square plane.

Meanwhile, each light source 111 includes a circuit board 114 positioned below the LED package 113 and connected to the LED package 113. In this case, an electrode (not shown) of the LED package 113 may be bonded to the circuit board 114 to be electrically connected thereto.

In addition, the light source 111 includes a heat dissipation substrate 115 bonded to a lower portion of the circuit board 114 to emit heat. In this case, the heat dissipation substrate 115 may include at least one of aluminum, silver, copper, and alloys thereof as a thermally conductive material. Alternatively, in order to reduce the weight of the heat dissipation substrate 115, one of aluminum, silver, copper, and platinum may be plated on an insulating substrate such as high heat resistant plastic. As described above, since the heat dissipation substrate 115 includes a heat conductive material or an insulating substrate on which a metal material is plated, the heat dissipation characteristics may be improved without providing a separate heat dissipation device. For example, as a result of measuring the surface temperature of the lighting device 100 including the heat radiation substrate 115 made of a thermally conductive material, a temperature of about 36 ° C. was measured. As such, by using an insulating substrate plated with a thermally conductive material or a metal material, it is possible to further improve heat dissipation characteristics of the lighting apparatus 100.

The light source 111 includes a rotation shaft 116 for rotating the heat dissipation substrate 115 to change the position of the light source 111. Specifically, one end of the rotating shaft 116 is fixed to the lower central region of the heat dissipation substrate 115, and the other end is connected to the curved passage formed on the lower surface of the main body 130. In this case, the other end of the rotation shaft 116 moves along the curved path of the main body 130, and the heat dissipation substrate 115 connected in a fixed form with one end is moved by the movement of the other end. The circuit board 114, the LED package 113, and the lens 112 bonded to the heat dissipation board 115 are integrally moved by the movement of the heat dissipation board 115. That is, the light source 111 is moved by the movement of the rotation shaft 116 to change the position. By changing the position of the light source 111 through the configuration of the rotating shaft 116, it is possible to change the angle of the light output.

Meanwhile, the power supply unit 120 is electrically connected to the lighting unit 110 to supply power for driving the lighting unit 110. To this end, the power supply unit 120 includes a signal receiver 121 and a power control unit 123.

The signal receiver 121 receives an on / off operation signal. In this case, the on / off operation signal is an operation signal for turning on / off the light output operation of the lighting unit 110. In addition, the signal receiver 121 may receive an on / off operation signal through various methods. For example, the on / off operation signal may be received through an infrared signal receiving method or an RF signal receiving method. First, the method for receiving an infrared signal is an on / off operation signal corresponding to an infrared signal when an operator presses an on / off button provided in the remote control device while the remote control device (not shown) is directed to the lighting device 100. It can be delivered to the signal receiving unit 121.

In addition, the RF signal reception method may transmit the on / off operation signal received through an antenna (not shown) installed in the lighting apparatus 100 to the signal receiver 121 when the on / off operation signal is wirelessly transmitted from a management station or the like. Will be. When the on / off operation signal is received by the signal receiver 121 through any one of the above methods, the signal is transmitted to the power controller 123.

Meanwhile, in addition to the above-described method, the signal receiver 121 may be replaced with a mechanical switch (not shown) to control on / off. That is, the current is turned on and off according to the on / off operation of the mechanical switch, so that the power control unit 123 can be operated.

The power controller 123 controls the power supply to the lighting unit 110 according to the on / off operation signal transmitted through the signal receiving unit 121. In detail, when the on operation signal is transmitted, the power is supplied to the lighting unit 110, and when the off operation signal is transmitted, the power supplied to the lighting unit 110 is cut off. As such, as the lighting unit 110 and the power unit 120 are located in the main body 130 of the lighting device 100, the loss of the power unit 120 may be prevented and the safety of the pedestrian may be ensured.

3A and 3B are graphs showing candela-angle relationships of light sources according to examples and comparative examples of the present invention. Specifically, FIGS. 3A and 3B illustrate a candela-angle relationship of light in a vertical direction and a horizontal direction of light output through the light source 111 shown in FIG. 1 and a candela-angle relationship according to a comparative example.

The lighting apparatus 100 illustrated in FIG. 1 includes a plurality of light sources, and outputs light through each light source 111. In this case, the light source 111 has a structure that outputs the light emitted from the LED package 113 through the rectangular plane of the lens element 112. On the other hand, the lighting apparatus of the comparative example is not provided with a lens element, and has a structure of directly outputting light emitted from the plurality of LED packages.

Referring to FIG. 3A, the first graph 1a according to the comparative example is measured in the vertical direction of light emitted from the LED package, and has a candela of up to 60 cd although having a wide wide angle. On the other hand, the second graph 1b according to the embodiment of the present invention measures the light emitted from the rectangular plane of the lens element 112 in the vertical direction, and has a wide wide angle and has a maximum of 110 (cd) candelas. Able to know. Through this, it can be seen that a higher candela value can be obtained when using the lens element 112 whose light output surface is a square plane.

In addition, referring to FIG. 3B, the first graph 2a according to the comparative example measures light emitted from the LED package in a horizontal direction and has a candela of up to 60 cd although having a wide wide angle. On the other hand, the second graph 2b according to the embodiment of the present invention measures the light output from the rectangular plane of the lens element 112 in the horizontal direction, and has a wide wide angle and has a maximum of 110 cd. Can be. In this case, as compared with the first graph 2a, the second graph 2b has a high candela at a wide angle of the entire area, and it can be seen that the light is irradiated to a wider area and the irradiation amount of light is increased.

FIG. 4 is a diagram showing characteristics of light irradiated in the lighting apparatus shown in FIG. 1. Specifically, FIG. 4 is a diagram in which the illumination device 100 shown in FIG. 1 is installed at a position about 15 m away from the ground surface, and the beam width and illuminance of the light output therefrom are measured.

Referring to FIG. 4, the light irradiated from the lighting device 100 is irradiated in a three-dimensional cone shape, and has a beam width and illuminance different according to the irradiation distance of the light, and has an average wide angle of 44 °. In this case, the diagram shown in FIG. 4 is the result of measuring the beam width and illuminance of the light irradiation distance in 1 m units.

Referring to FIG. 4, at a point about 1 m away from the lighting device 100 in the vertical direction, the light has a beam width of 1.94 m and the illuminance in the central region is 2633.93 (lux). Further, at a point about 5 m away from the lighting device 100 in the vertical direction, the light has a beam width of 9.69 m, and the illuminance in the central region is 105.36 (lux).

The light has a beam width of 19.39 m at a point about 10 m away from the light emitted from the illumination device 100 in the vertical direction, and the illuminance at the central region has 26.34 (lux). In addition, at the point where the light irradiated from the lighting device 100 reaches the ground surface, that is, about 15 m away, the light has a beam width of 29.08 m and the illuminance in the central region is 11.71 (lux). As described above, when the beam width and illuminance are measured using the light irradiation distance in units of 1 m, the beam width increases and the illuminance decreases as the distance from the illumination device 100 increases.

5 is a cross-sectional view taken along the line AA ′ of the lighting apparatus shown in FIG. 1. Referring to FIG. 5, in the lighting device 100, the plurality of light sources 111 are connected to the lower surface of the main body 130. Specifically, the curved passage 131 is formed at a position corresponding to each of the plurality of light sources 111 on the lower surface of the main body 130. Here, the rotating shaft 116 is connected to the curved passage 131 at the other end thereof to move along the curved passage 131, thereby rotating the heat dissipation substrate 115 connected at one end. The angle of the light source 111 can be changed by rotating the heat dissipation substrate 115. In this case, the other end of the rotating shaft 116 is moved along the curved passage 131, and after the alignment of the plurality of light sources 111 at a desired angle, the rotating shaft 116 is fixed through a fixing pin (not shown). The positions of the plurality of light sources 111 can be maintained.

On the other hand, by changing the angle of the light source 111, the angle of the light output by the light source 111 can be adjusted. Accordingly, by increasing the roughness of the light irradiated through the lighting device 100, it is possible to further increase the irradiation area. For example, the light sources positioned at the outermost line of the lighting unit 110 move the rotation axis to face the side direction, and the light sources positioned at the front line and the outermost line of the lighting unit 110 have an angle between the front and side surfaces. Moving the light sources, which are located in the front line of the lighting unit 110 maintains the vertical. In this way, by changing the angle of the light source by moving the rotation axis 116 of each light source, the light can be output at a wider angle. However, in order to implement such an example, the rotation shafts 116 constituting each light source 111 preferably have different lengths. As such, by adjusting the angles of the plurality of light sources 111 using the rotation shaft 116, the light irradiation area can be increased. In addition, as the light irradiation area is increased, when the lighting apparatus 100 is used as a street lamp, the installation interval of the street lamp may be increased. As a result, compared with the related art, the number of street lamps installed within the same distance can be reduced.

6 is a view showing an LED package applied to the present invention. Referring to FIG. 6, the LED package 113 includes a package body 113a, an insulating pad 113b, an LED 113c, a first electrode 113d, a second electrode 113e, a wire 113f, and an LED lens. A portion 113g is included.

The package body 113a is made of a ceramic material and includes a cavity formed on an upper surface thereof. In this case, the insulating pad 113b and the LED 113c are attached to the bottom surface of the cavity. In addition, a plated film made of a metal material is formed on the inclined side surface of the cavity to reflect light emitted from the LED 113c.

In addition, the first electrode 113d and the second electrode 113e extend through the side surface of the package body 113a to the inside of the cavity. In this case, the first electrode 113d and the second electrode 113e extending inside the cavity are connected to the LED 113c through the wire 113f.

The LED lens 113g includes a phosphor material and is formed in a cavity of the package body 113a. In this case, the LED lens portion 113g has a light extraction surface of a convex shape to facilitate light extraction.

While the above has been shown and described with respect to preferred embodiments of the invention, the invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

1 is a view showing a lighting device according to an embodiment of the present invention,

2 is a perspective view showing a lens element applied to the present invention,

3A and 3B are graphs showing a candela-angle relationship of a light source according to an embodiment of the present invention and a comparative example,

4 is a diagram showing the characteristics of light irradiated from the lighting device shown in FIG.

5 is a cross-sectional view taken along the line A-A 'of the lighting apparatus shown in FIG. 1, and

6 is a view showing an LED package applied to the present invention.

Explanation of symbols on the main parts of the drawings

100: lighting device 110: lighting unit

120: power supply 130: main body

Claims (7)

A main body having an inner space surrounded by an upper surface, a side surface, and a lower surface, wherein the inner space is divided into first and second spaces by a horizontal plate formed in a horizontal direction; The tunnel structure is disposed in the first space, the upper end portion formed of an LED package, a quadrangular plane for outputting light emitted from the LED package, and a tunnel structure penetrating in one direction while having an inner upper surface convex to cover the LED package. A light source including a lens element formed in a groove for accommodating the LED package, the lens element comprising a lower end configured to have a narrower width than the upper end, and a heat dissipation substrate mounted below the LED package to face the lower surface of the main body. Lighting unit consisting of a plurality; And, A power supply unit disposed in the second space and electrically connected to the lighting unit to supply power for driving the lighting unit; The lower surface of the main body includes a curved passage formed at a position corresponding to a plurality of light sources, and the light source is positioned below the LED package and is connected to a lower portion of the circuit board and a circuit board connected to the LED package. A heat dissipation substrate for dissipating heat, one end of which is fixed to a lower central region of the heat dissipation substrate, and the other end of which is located in the curved passage and moves along the curved passage to rotate the heat dissipating substrate, And a plurality of lens elements are arranged such that the corners of the rectangular plane are in contact with each other, and the rotation axis has a different length depending on the positions of the plurality of light sources. delete delete delete The method of claim 1, The heat dissipation substrate is a lighting device comprising at least one material of aluminum, silver, copper and alloys thereof. The method of claim 1, The heat dissipation substrate is a lighting device, characterized in that at least one of aluminum, silver, copper and platinum plated on an insulating substrate. The method of claim 1, The power supply unit, A signal receiver configured to receive an on / off operation signal; And, And a power control unit controlling power supply to the lighting unit according to an on / off operation signal of the signal receiving unit.

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