High efficiency LED lamp

Abstract

The present invention relates to a high-efficiency LED lighting fixture, and more specifically, includes a light source unit in which a plurality of LED chips are arranged in a direct-facing slim surface form to have a plurality of rows and columns, and a body unit installed on the outside of the light source unit to protect the light source unit, thereby having excellent optical characteristics with a high color rendering index (CRI) of 80 or higher, a color temperature of 5000K, and a luminous efficiency of 150lm / w or higher.

Description

Technology Field

[0001] The present invention relates to a high-efficiency LED lighting fixture, and more specifically, to an LED lighting fixture having excellent optical characteristics in various locations using direct slim surface lighting. Background Technology

[0003] A light-emitting diode (LED) refers to a semiconductor device capable of producing light of various colors by configuring a light source through the modification of compound semiconductor materials such as GaAs, AlGaAs, GaN, and InGaInP.

[0004] These light-emitting devices are widely used in various fields such as TVs, computers, lighting, and automobiles due to their advantages of having excellent monochromatic peak wavelengths, superior light efficiency, and miniaturization capabilities, as well as their eco-friendliness and low power consumption, and their scope of application is gradually expanding.

[0005] Due to recent energy conservation efforts, the use of low-efficiency incandescent bulbs is being regulated, and there is a growing movement among light-emitting diode (LED) manufacturers and lighting companies to replace them with high-efficiency lighting such as LEDs.

[0006] Lighting devices using these light-emitting elements as a light source are gaining popularity due to the advantage of a longer lifespan compared to conventional incandescent or halogen lamps.

[0007] However, conventional edge-type lighting devices have a structure in which LED elements are arranged on the side of a light guide plate, which is a surface light conversion member. Light incident from the LED elements to the side of the light guide plate undergoes a total internal reflection process inside the light guide plate, and is irradiated as surface light with the upper and lower surfaces of the light guide plate serving as the reflection surface and the emission surface, respectively. The direction of irradiation of the LED point light source and the direction of irradiation of the converted surface light source are perpendicular to each other.

[0008] These edge-type surface lighting devices generally have the advantage of having uniform illumination and being able to be manufactured in a thin form, but they have the disadvantage of low light conversion efficiency and, despite the uniform illumination, the illumination at the edge is relatively higher than at the center of the emission surface, causing light leakage, which requires a relatively large bezel thickness.

[0009] In addition, there is a problem where assembly is difficult and costs increase due to the relatively large number of related parts, including the light guide plate for guiding the emitted light to the emission surface.

[0010] Therefore, there is a need to develop high-efficiency LED fixtures that supply light to the entire fixture to illuminate uniformly. Prior art literature

[0012] Korean Published Patent No. 10-2011-0101936 Heat sink and lighting device equipped with the same (September 16, 2011) The problem to be solved

[0013] In order to solve the above-mentioned problems, the purpose of the high-efficiency LED lighting fixture according to an embodiment of the present invention is to provide a high-efficiency LED lighting fixture in which LED chips are densely installed to uniformly emit bright and fine light by using a direct slim surface lighting method in which LED chips are attached to the front of the lighting fixture to diffuse light vertically. means of solving the problem

[0015] To solve the above problem, a high-efficiency LED lighting fixture according to an embodiment of the present invention may include a light source portion in which a plurality of LED chips arranged to have a plurality of rows and columns are provided as a direct-facing slim surface type light, and a body portion installed outside the light source portion to protect the light source portion.

[0016] In addition, when the above-described high-efficiency LED fixture is provided as a street light or security light, the light source may be characterized by having an input power of 50 to 120 W, a rated luminous flux of 7,500 to 18,000 lm, a luminous efficiency of 150 lm / W or more, and a color temperature of 4,500 to 5,500 K.

[0017] The body portion of the high-efficiency LED lighting fixture according to another embodiment of the present invention may include a light source protection portion that surrounds the surface of the light source portion according to the amount of light at the place where the LED lighting fixture is used.

[0018] Additionally, the light source protection unit may include a cover storage container in which a protective cover that surrounds and protects the surface of the light source unit is stored in a spiral shape and installed on one side of the light source unit, with a cover discharge hole formed in the direction of the light source unit, and a wire winding unit provided inside the body unit and installed on the other side of the light source unit, which winds or unwinds a guide wire connected to the leading end of the protective cover so that the protective cover surrounds or exposes the light source unit.

[0019] Additionally, the cover storage container may include a cover winding bar formed to be rotatable within the cover storage container according to the winding of the wire winding part, and a pressure roller formed at the tip of the cover discharge hole to press the protective cover when the protective cover is unwound or wound.

[0020] Additionally, the wire winding unit may include a wire winding bar on which the guide wire is wound; a rotary motor for rotating the wire winding bar; and a wire discharge hole formed so that the guide wire can exit to the outside or inside of the body depending on the rotation direction of the wire winding bar. Effects of the invention

[0022] The high-efficiency LED lighting fixture according to an embodiment of the present invention has the effect of having excellent optical characteristics with high luminous efficiency by using a light source unit of a direct slim surface lighting method. Brief explanation of the drawing

[0024] FIG. 1 is an exemplary diagram showing an example of a high-efficiency LED lighting fixture according to an embodiment of the present invention. Figure 2 is a rotated example diagram showing the appearance of the light source part of the high-efficiency LED lighting fixture illustrated in Figure 1. Figure 3 is a schematic diagram showing the installation of the LED chip of the light source unit shown in Figure 2. FIG. 4 is an illustrative diagram showing another example of a high-efficiency LED lighting fixture according to an embodiment of the present invention. FIG. 5 is an exemplary diagram showing the appearance of a high-efficiency LED lighting fixture according to another embodiment of the present invention. Figure 6 is a cross-sectional example showing the interior of the cover storage container illustrated in Figure 5. Figure 7 is an example of operation showing the protective cover illustrated in Figure 6 covering the light source. FIG. 8 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention. Figure 9 is the test result for the test report of Figure 8. Figure 10 is a product photo of the test report of Figure 8. FIG. 11 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention. Figure 12 is the test result for the test report of Figure 11. Figure 13 is a product photo of the test report of Figure 11. FIG. 14 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention. Figure 15 is the test result for the test report of Figure 14. Fig. 16 is a product photo of the test report of Fig. 14. Specific details for implementing the invention

[0025] The following description of the present invention with reference to the drawings is not limited to specific embodiments and allows for various modifications and various embodiments. Furthermore, it should be understood that the content described below includes all modifications and substitutions that fall within the spirit and scope of the present invention.

[0026] In the following description, terms such as "first," "second," etc., are used to describe various components and are not limited in their meaning; they are used solely for the purpose of distinguishing one component from another.

[0027] Identical reference numbers used throughout this specification indicate identical components.

[0028] The singular expressions used in the present invention include the plural expressions unless the context clearly indicates otherwise. Furthermore, terms such as "comprising," "having," or "having" described below should be interpreted as specifying the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] Hereinafter, a high-efficiency LED lighting fixture according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7.

[0031] FIG. 1 is an illustrative diagram showing the appearance of one example of a high-efficiency LED lighting fixture according to an embodiment of the present invention, FIG. 2 is a rotated illustrative diagram showing the appearance of a light source part of the high-efficiency LED lighting fixture shown in FIG. 1, FIG. 3 is a schematic diagram showing the appearance of an LED chip installed in the light source part shown in FIG. 2, and FIG. 4 is an illustrative diagram showing the appearance of another example of a high-efficiency LED lighting fixture according to an embodiment of the present invention.

[0033] Referring to FIGS. 1 and 2, a high-efficiency LED lighting fixture (1) according to an embodiment of the present invention may include a light source part (10) and a body part (20).

[0034] When a high-efficiency LED light fixture (1) is used as an outdoor light, such as a street light or security light as shown in FIG. 1, it is most desirable for the light source part (10) to illuminate downwards based on FIG. 1.

[0035] The light source unit (10) may be provided with a plurality of LED chips (11) arranged to have a plurality of rows and columns, as a direct-facing slim surface type light.

[0036] Specifically, the light source unit (10) may have LED chips (11) arranged in multiple rows and columns as shown in FIG. 3. At this time, the rows and columns may be formed in various shapes depending on the shape and usage location of the light source unit (10), and since the LED chips (11) are formed in multiple numbers in the light source unit (10), they can be arranged without limiting the shape to circular, elliptical, polygonal, etc.

[0037] In order to minimize the flicker phenomenon of the lighting emitted from the light source (10), the high-efficiency LED lighting fixture (1) according to the embodiment of the present invention may include a Driver IC and PCB circuit for current stabilization, a constant current driver, a power supply, an external electromagnetic interference blocking device, etc., and may not have an adverse effect on eye health even when used for a long time.

[0038] The body part (20) can be installed outside the light source part (10) to protect the light source part (10). At this time, a power supply device for supplying power to the light source part (10) can be formed inside the body part (20).

[0039] When a high-efficiency LED light fixture (1) is provided as an outdoor light, the body part (20) can be formed in the shape of a street light or security light as shown in FIG. 1.

[0040] At this time, the body part (20) may be formed with a size of L498xW230xH105 or L634xW271xH108. Here, L represents the left-right length, W represents the front-back length, and H represents the top-bottom height.

[0041] Additionally, the body (20) is formed with a dustproof IP66 rating body to protect the light source (10) from the outside. Here, the dustproof IP66 rating prevents the ingress of external dust, protects the light source (10) from strongly pouring water such as waves, and is capable of protecting against rain and snow, thereby ensuring high performance of the light source (10).

[0042] Additionally, the light source unit (10) may have an input power of 50 to 120 W, a rated luminous flux of 7,500 to 18,000 lm, a luminous efficiency of 150 lm / W or more, and a color temperature of 4,500 to 5,500 K (KELVIN). For example, when the rated luminous flux and luminous efficiency are as described above, the color temperature of the light source unit (10) may be between cool white and daylight, and may display a color suitable for use as indirect lighting or a general fluorescent lamp.

[0043] Most preferably, when the size of the body part (20) is L498xW230xH105, the light source part (10) has an input power of 50W and a rated luminous flux of 7,500lm, and can exhibit a luminous efficiency of 150lm / W or more.

[0044] At this time, the high-efficiency LED light fixture (1) may further include a sensor unit (30).

[0045] The sensor unit (30) may be formed on one side of the body unit (20) and may generate a detection signal when an object, such as a person, passes over the location where the light source unit (10) emits light. The detection signal may be used to determine whether power is supplied to the light source unit (10) by a power supply device within the body unit (20).

[0047] FIG. 5 is an exemplary diagram showing the appearance of a high-efficiency LED lighting fixture according to another embodiment of the present invention, FIG. 6 is an exemplary cross-sectional view showing the interior of the cover storage container shown in FIG. 5, and FIG. 7 is an exemplary operation diagram showing the protective cover shown in FIG. 6 covering the light source part.

[0049] Referring to FIGS. 5 to 7, the body portion (20) of a high-efficiency LED lighting fixture (1) according to another embodiment of the present invention may further include a light source protection portion comprising a cover storage container (210) and a wire winding portion (211).

[0050] Here, excluding the light source protection part, the high-efficiency LED lighting fixture (1) according to another embodiment of the present invention may be substantially the same as the high-efficiency LED lighting fixture (1) according to the embodiment of the present invention.

[0051] Therefore, we will only explain the light source protection section.

[0053] Referring to FIGS. 5 and 6, the light source protection unit may include a cover storage container (210) and a wire winding unit (211).

[0054] The cover storage container (210) has a protective cover (2100) stored in a spiral shape inside, is installed on one side of the light source unit (10), and may have a cover discharge hole (2101) formed in the direction of the light source unit (10).

[0055] The protective cover (2100) can be stored spirally inside the cover storage container (210) by the cover winding bar (2102) to be described later.

[0056] Here, the protective cover (2100) may include a light-diffusing film made of a translucent material, and any material commonly used in the industry may be applied without limitation. Preferably, the protective cover (2100) may be formed of a material with a certain elasticity to completely wrap and protect the light source (10).

[0057] That is, the protective cover (2100) can wrap around and protect the light source unit (10) according to the rotational direction of the cover winding bar (2102) and the wire winding unit (211) to be described later, or expose the light source unit (10) to illuminate the location where the LED chip (11) of the light source unit (10) is installed.

[0058] Additionally, the protective cover (2100) may have a connecting member (21000) formed at its tip that can be connected to a guide wire (2110).

[0059] The connecting member (21000) is formed in the same shape as the uppercase letter 'I' so that it can be more strongly fixed to both sides of the front end of the protective cover (2100), and a guide wire (2120) is wound around the middle of the connecting member (21000) so that the protective cover (2100) and the guide wire (2110) can be strongly connected without adhesive.

[0060] The cover discharge hole (2101) is a place where the protective cover (2100) is discharged from inside the cover storage container (210) toward the light source (10), and can be formed to have a width longer than the width of the protective cover (2100). Additionally, the cover discharge hole (2101) can be formed to partially protrude toward the light source (10) so that the protective cover (2100) is discharged in a flat state from the cover storage container (210) which is formed in a cylindrical shape.

[0061] Referring to FIG. 5, the cover storage container (210) may include a cover winding bar (2102) and a compression roller (2103).

[0062] The cover winding bar (2102) is formed so that the protective cover (2100) is wound inside the cover storage container (210), and can be formed to be rotatable within the cover storage container (210) according to the winding of the wire winding part (211).

[0063] The cover winding bar (2102) can be connected to the other end of the protective cover (2100) to more easily wind or unwind the protective cover (2100), and a rotary motor is formed at the front or rear so as to rotate in the same direction according to the rotation of the rotary motor (2111) of the wire winding unit (211) to be described later.

[0064] The compression roller (2103) is formed at the tip of the cover discharge hole (2101) and can press the protective cover (2100) that is unwound or wound by the cover winding bar (2102).

[0065] Specifically, the compression roller (2103) is rotatably installed at the tip of the cover discharge hole (2101) so as to press the protective cover (2100) when the protective cover (2100) is unwound or wound from the cover storage container (210), thereby allowing the protective cover (2100) to be unwound or wound in a flatter state.

[0066] It is most preferable that these compression rollers (2103) be formed long to match the width of the protective cover (2100), but at least one may be formed at equal intervals along the width direction of the cover discharge hole (2101) of the cover storage container (210), so they are not necessarily limited to the shape described above.

[0067] The wire winding section (211) may include a guide wire (2110), a wire winding bar (2113), a rotary motor (2111), and a wire discharge hole (2112).

[0068] As described above, the guide wire (2110) can be connected to both ends of the protective cover (2100) and can be wound by the wire winding bar (2113) to pull the protective cover (2100) toward the wire discharge hole (2111).

[0069] The wire winding bar (2113) is embedded inside the body part (20) in the opposite direction to the cover storage container (210), that is, on the other side of the light source part (10), so that the guide wire (2110) can be wound. For example, the wire winding bar (2113) can be embedded inside the body part (20) so that the protective cover (2100) is in close contact with the light source part (10) as the guide wire (2110) is wound.

[0070] Additionally, the wire winding bar (2113) may be rotated by a rotary motor (2111) and may have a spiral guide groove formed so that the guide wire (2110) can be wound along the surface of the wire winding bar (2113), but is not limited thereto.

[0071] The rotary motor (2111) can rotate the wire winding bar (2113) to wind or unwind the guide wire (2110) onto the wire winding bar (2113). That is, depending on whether the rotary motor (2111) is operated and the direction of rotation, the protective cover (2100) may be placed over the light source unit (10) or not placed over it.

[0072] To this end, the rotary motor (2111) may be provided as a bidirectional rotary motor and may also be formed on one side of the cover winding bar (2102) to allow the guide wire (2110) and the protective cover (2100) to be wound and unwound more easily.

[0073] The wire discharge hole (2112) may be a passage through which the guide wire (2110) exits to the outside or inside of the body part (20) depending on the rotational direction of the wire winding bar (2113).

[0074] The wire discharge hole (2112) may be formed with two small holes large enough for the guide wire (2110) to pass through, or if formed long with the same width as the protective cover (2100), the hole size may be formed thinner than the protective cover (2100), so that after the protective cover (2100) is completely unwound by the guide wire (2110), the tip of the protective cover (2100) may be caught in the wire discharge hole (2112) and fixed.

[0075] Using the configuration described above, the light source protection unit can protect the light source unit (10) by wrapping it with a protective cover (2100) as shown in FIG. 7.

[0076] Here, the light source protection unit may be configured to cover the surface of the light source unit (10) according to the surrounding environment. Specifically, the light source protection unit may detect the amount of light in a place illuminated by the light source unit (10) by using a solar panel, etc., which is additionally attached to the sensor unit or body unit (20) of the circular sensor light.

[0077] For example, if the amount of light in the place is sufficient so that the use of a light is not necessary, or if a weak amount of light is required, the light source protection unit may be activated so that the protection cover (2100) covers the surface of the light source unit (10).

[0078] Through this, when the light source unit (10) is turned off, the protective cover (2100) can protect the light source unit (10) from foreign substances such as insects and dust, and when the light source unit (10) is turned on, the brightness of the light emitted from the light source unit (10) can be adjusted to be lowered by the protective cover (2100).

[0079] On the other hand, if bright light from a light source is required at the location, the light source protection unit can operate so that the protective cover (2100) can be released from the surface of the light source unit (10).

[0080] Accordingly, the high-efficiency LED light fixture according to another embodiment of the present invention can protect the light source (10) more conveniently depending on whether the light source (10) is in use, thereby having the effect of extending the lifespan of the light source (10).

[0082] FIG. 8 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention, FIG. 9 is a test result for the test report of FIG. 8, FIG. 10 is a product photograph for the test report of FIG. 8, FIG. 11 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention, FIG. 12 is a test result for the test report of FIG. 11, FIG. 13 is a product photograph for the test report of FIG. 11, FIG. 14 is a test report of a high-efficiency LED lighting fixture according to an embodiment of the present invention, FIG. 15 is a test result for the test report of FIG. 14, and FIG. 16 is a product photograph for the test report of FIG. 14.

[0084] Referring to FIGS. 8 to 16, it can be seen that the high-efficiency LED lighting fixture according to an embodiment of the present invention has a sealed protection rating of IP66 for the enclosure, and has a structure that is sealed from dust and water.

[0086] Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical concept or essential features of the invention. Accordingly, the embodiments described above are illustrative in all respects and are not restrictive. Explanation of the symbols

[0088] 1 : High-efficiency LED lighting fixture 10 : Light source 11 : LED chip 20 : Body part 210 : Cover storage container 2100 : Protective cover 21000 : Connecting member 2101 : Cover discharge hole 2102 : Cover winding bar 2103 : Compression roller 211 : Wire winding unit 2110 : Guidewire 2111 : Rotary motor 2112 : Wire ejection hole 2113 : Wire winding bar 30: Sensor section

Claims

Claim 1 A high-efficiency LED lighting fixture comprising: a light source unit provided with a plurality of LED chips arranged to have a plurality of rows and columns as a direct-facing slim surface type light source; a body unit installed on the outside of the light source unit to protect the light source unit; wherein the body unit includes a light source protection unit that surrounds the surface of the light source unit according to the amount of light in the place where the LED lighting fixture is used; wherein the light source protection unit includes a cover storage container in which a protective cover that surrounds and protects the surface of the light source unit is stored in a spiral shape inside, installed on one side of the light source unit, and having a cover discharge hole formed in the direction of the light source unit; and a wire winding unit provided inside the body unit and installed on the other side of the light source unit, which winds or unwinds a guide wire connected to the leading end of the protective cover so that the protective cover surrounds or exposes the light source unit. Claim 2 In claim 1, when the high-efficiency LED lighting fixture is provided as a street light or security light, the light source unit is characterized by having an input power of 50 to 120 W, a rated luminous flux of 7,500 to 18,000 lm, a luminous efficiency of 150 lm / W or more, and a color temperature of 4,500 to 5,500 K. Claim 3 delete Claim 4 delete Claim 5 In claim 1, the cover storage container is formed to allow the protective cover to be wound inside, and comprises a cover winding bar formed to be rotatable within the cover storage container according to the winding of the wire winding part, and a pressure roller formed at the tip of the cover discharge hole to press the protective cover when the protective cover is unwound or wound. Claim 6 In claim 1, the wire winding portion comprises: a wire winding bar on which the guide wire is wound; a rotary motor for rotating the wire winding bar; and a wire discharge hole formed to allow the guide wire to exit to the outside or inside of the body portion depending on the rotation direction of the wire winding bar, in a high-efficiency LED lighting fixture.

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