Ultra-wide angle LED module

Abstract

The purpose of the present invention is to provide an ultra-wide angle LED module comprising: a circuit board including at least one LED; a lower case having an open upper side and having a circuit board installed therein; and an upper case coupled to the upper side of the lower case and having a refractive lens for refracting light emitted by the LED, wherein the refractive lens accommodates the LED therein and includes a light-collecting groove, which causes a first refraction of the light emitted by the LED, and a first diffused reflection unit, which is formed as a plurality of concave grooves on the opposite surface of the circuit board and causes a second refraction of the light emitted by the LED, the first diffused reflection unit being arranged to be in contact with the circuit board.

Description

Ultra-wide-angle LED module

[0001] The present invention relates to an ultra-wide-angle LED module, and more specifically, to an ultra-wide-angle LED module capable of irradiating light not only forward but also to the sides and rear by diffusely reflecting light.

[0002] In general, LED (light-emitting diode) refers to a light-emitting diode device, which is a device that utilizes the phenomenon of light being generated when current flows through the PN junction of a compound semiconductor such as GaP or GaAs.

[0003] These LEDs have a wide range of applications and are therefore used in a variety of products. For example, LED modules are used as lighting for channel signs.

[0004] That is, the LED modules applied to the channel sign are formed by bending in various shapes to express three-dimensional characters and are installed inside the channel sign that has an acrylic plate on the front that allows light to pass through. Multiple modules are installed at a set interval inside the channel sign and used as lighting.

[0005] To explain this further, the LEDs used in the LED modules applied to channel signs basically have a diffusion angle of 125 degrees, so multiple LEDs are installed taking the diffusion angle into consideration.

[0006] If the installation intervals of multiple LED modules applied to a channel sign are too far apart, shade is created in areas where light does not reach, resulting in a dark appearance. Conversely, if the installation intervals of LED modules are narrowed, the amount of LED modules required for installation increases, leading to a problem of increased installation costs.

[0007] Therefore, LED modules are installed in multiple locations at appropriate intervals, taking into account the diffusion angle.

[0008] However, existing LED modules have a limitation in their diffusion angle, so there is a problem that the LED modules placed at the outermost edge of the channel sign cannot handle the shadows created on the side of the sign.

[0009] The purpose of the present invention is to develop an ultra-wide-angle LED module that can irradiate LED light not only forward but also to the sides and rear by diffusely reflecting the light irradiated by the LED.

[0010] The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0011] The above-described object is achieved by, according to one embodiment of the present invention, a circuit board including at least one LED, a lower case having an open upper side and having a circuit board installed therein, and an upper case coupled to an upper side of the lower case and having a refractive lens for refracting light emitted by the LED, wherein the refractive lens includes a light-collecting groove for receiving the LED inside and for first refracting light emitted by the LED, and a first diffused reflection portion formed as a plurality of concave grooves on an opposite surface of the circuit board for second refracting light emitted by the LED, and the first diffused reflection portion is an ultra-wide-angle LED module arranged to be in contact with the circuit board.

[0012] The upper case can have substrate members positioned on the circuit board on a surface facing the circuit board.

[0013] The concave groove has an opening formed in a square shape, and a plurality of concave grooves can be arranged so that their respective side surfaces are in contact with each other.

[0014] The upper case may be formed with a plurality of concave grooves on the lower surface to form a second reflective portion that refracts light emitted by the LED.

[0015] The second reflective portion can be formed by extending from the first reflective portion.

[0016] In addition, according to another embodiment of the present invention, a circuit board including at least one LED, a lower case having an open upper side and having a circuit board installed therein, and an upper case coupled to an upper side of the lower case and having a refractive lens that refracts light emitted by the LED, the refractive lens includes a light collecting groove that receives the LED inside and refracts light emitted by the LED in a first manner, and a first diffuse reflection portion formed as a plurality of concave grooves on an opposite surface of the circuit board that refracts light emitted by the LED in a second manner, and the first diffuse reflection portion can be achieved by an ultra-wide-angle LED module that is arranged to be spaced apart from the circuit board by a preset distance or more.

[0017] The refractive lens may further include a protrusion formed in the direction of the circuit board to separate the first reflective portion and the circuit board.

[0018] The protrusion is formed with a hollow space to communicate with the light collecting groove and can accommodate an LED inside.

[0019] The concave groove has an opening formed in a square shape, and a plurality of concave grooves can be arranged so that their respective side surfaces are in contact with each other.

[0020] The upper case may be formed with a plurality of concave grooves on the lower surface to form a second reflective portion that refracts light emitted by the LED.

[0021] The second reflective portion can be formed by extending from the first reflective portion.

[0022] According to an ultra-wide-angle LED module according to one embodiment of the present invention, LED light irradiated in one direction is diffusely reflected, so that the light can reach the sides and rear of the LED module, thereby improving light efficiency.

[0023] FIG. 1 is a schematic diagram showing an ultra-wide-angle LED module according to one embodiment of the present invention.

[0024] Figure 2 is an exploded perspective view of an ultra-wide-angle LED module according to one embodiment of the present invention.

[0025] Fig. 3 is a cross-sectional view of the upper case and circuit board included in the ultra-wide-angle LED module of Fig. 1.

[0026] Figure 4 is a bottom view of the upper case shown in Figure 3.

[0027] FIG. 5 is a bottom view of upper cases included in an ultra-wide-angle LED module according to another embodiment of the present invention.

[0028] FIG. 6 is a cross-sectional view of an upper case and a circuit board included in an ultra-wide-angle LED module according to another embodiment of the present invention.

[0029] Fig. 7 is a bottom view of the upper case shown in Fig. 6.

[0030] Figure 8 is a drawing showing the operating status of a typical LED module.

[0031] FIG. 9 is a drawing showing the operating state of an ultra-wide-angle LED module according to one embodiment of the present invention.

[0032] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0033] The same reference numbers or symbols used in each drawing of this specification represent parts or components that perform substantially the same functions. The shapes and sizes of elements in the drawings may be exaggerated for clarity.

[0034] The terminology used herein is for the purpose of describing embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0035] While terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, the components are not limited by these terms, and these terms are used solely to distinguish one component from another. For example, without departing from the scope of the present invention, a first component could be referred to as a second component, and similarly, a second component could also be referred to as a first component.

[0036] Hereinafter, an ultra-wide-angle LED module according to one embodiment of the present invention will be described in detail with reference to the drawings.

[0037] FIG. 1 is a schematic diagram illustrating an ultra-wide-angle LED module according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of an ultra-wide-angle LED module according to one embodiment of the present invention. FIG. 3 is a cross-sectional view of an upper case and a circuit board included in the ultra-wide-angle LED module of FIG. 1. FIG. 4 is a bottom view of the upper case illustrated in FIG. 3.

[0038] Referring to FIGS. 1 to 4, the ultra-wide-angle LED module (10) may include a circuit board (100) and an LED module case (200).

[0039]

[0040] The circuit board (100) can be installed inside the LED module case (200). The circuit board (100) is accommodated inside the LED module case (200). An LED (Light Emitting Diode, 120) and a substrate member (140) are installed on the circuit board (100).

[0041] LEDs (120) may be provided in multiple numbers. Multiple LEDs (120) may be arranged only on the same surface of the circuit board (100). For example, multiple LEDs (120) may be arranged at equal intervals on the circuit board (100).

[0042] The substrate member (140) is installed on the circuit board (100). The substrate member (140) is installed on the same surface as the LED (120) and connects the circuit board (100) and the LED (120). The substrate member (140) includes components such as a capacitor and a resistor.

[0043]

[0044] The LED module case (200) has an internal space (S) in which a circuit board (100) is installed. The LED module case (200) includes a lower case (220) and an upper case (240).

[0045] The lower case (220) is opened on one side to form an internal space (S) in which a circuit board (100) is accommodated. For example, the upper side of the lower case (220) is opened to allow the circuit board (100) to be inserted and installed.

[0046] The lower case (220) may have wires (W) embedded in its bottom surface. The wires (W) may be composed of a pair of positive wires (W1) and negative wires (W2). The wires (W) are electrically connected to the circuit board (100). The lower case (220) may have holes (not shown) formed at both ends through which the wires (W) pass.

[0047] The upper case (240) is coupled to the lower case (220). The upper case (240) is coupled to the upper side of the lower case (220) to seal the internal space (S). The upper case (240) may be formed in a shape corresponding to the lower case (220). The upper case (240) is formed of a transparent material that allows light to pass through. For example, the upper case (240) may be formed of glass or a synthetic resin material. The upper case (240) has a refractive lens (250).

[0048] The refractive lens (250) is coupled to the upper case (240). The refractive lens (250) may be formed integrally with the upper case (240). The refractive lens (250) may be formed of the same material as the upper case (240).

[0049] The refractive lens (250) refracts the light emitted by the LED (120). For example, the refractive lens (250) can spread the light emitted by the LED (120) over a wide range, thereby increasing the light diffusion angle. The refractive lenses (250) can be formed in a number corresponding to the number of LEDs (120). The refractive lenses (250) can be formed at a position that overlaps the LED (120) in the vertical direction.

[0050] As illustrated in Fig. 3, the refractive lens (250) may be formed with a convex upper shape and a concave lower shape. The refractive lens (250) includes a light-collecting groove (252) and a diffuse reflection portion (254).

[0051] The light collecting groove (252) is formed on the lower side of the refractive lens (250) and refracts the light emitted by the LED (120) for the first time. The light collecting groove (252) may be formed in a concave groove shape. The light collecting groove (252) can collect the light emitted by the LED (120). The light collecting groove (252) can increase the light irradiation distance by directing the light emitted from the LED (120). The light collecting groove (252) can accommodate the LED (120) on the inside. The light collecting groove (252) may be arranged so that the opening is in contact with the circuit board (100) to surround the entire LED (120). The shape of the light collecting groove (252) is not limited, but will be understood to be a shape that can refract the light in a wider range than the diffusion angle of the light emitted by the LED (120).

[0052] The diffuse reflection portion (254) is formed on the lower surface of the upper case (240). Specifically, the diffuse reflection portion (254) is formed on the opposite surface of the circuit board (100) to refract light emitted by the LED (120). In addition, the diffuse reflection portion (254) can refract light that has been first refracted by the light collection groove (252). That is, the diffuse reflection portion (254) can increase the diffusion angle of light by secondly refracting light emitted by the LED (120) or light refracted by the light collection groove (252). The diffuse reflection portion (254) can be formed at the same height as the opening of the light collection groove (252).

[0053] As illustrated in FIG. 3, the diffuse reflection portion (254) may be formed with a plurality of concave grooves (2540) to diffusely reflect light. The concave grooves (2540) may be formed in a direction in which the openings face the circuit board (100). As illustrated in FIG. 3, the concave grooves (2540) may be formed in a cross-sectioned elliptical shape. That is, the plurality of concave grooves (2540) may be formed in a cross-sectioned elliptical shape with continuous cuts. The aforementioned elliptical shape has a predetermined curvature, and, if necessary, the plurality of concave grooves (2540) may be formed in an elliptical shape with different curvatures.

[0054] Additionally, as illustrated in FIG. 4, the concave groove (2540) may be formed in a rectangular shape and positioned so that each side surface contacts the other. The shape of the concave groove (2540) and the opening is not limited, and may be understood as a polygonal shape that each side surface can contact and a shape that can refract light to increase the diffusion angle.

[0055] The diffuse reflection part (254) may include a first diffuse reflection part (2542) and a second diffuse reflection part (2544).

[0056] The first diffuse reflection portion (2542) may be formed in the first region (T1). The first region (T1) is defined as the lower side of the refractive lens (250) on the lower surface of the upper case (240). The first diffuse reflection portion (2542) may be formed in the same range as the lower side of the refractive lens (250) in the vertical direction. That is, the first diffuse reflection portion (2542) is formed to overlap with the refractive lens (250) in the vertical direction.

[0057] The second diffuse reflection portion (2544) is formed as an extension from the first diffuse reflection portion (2542). The second diffuse reflection portion (2544) can have the same structure and perform the same function as the first diffuse reflection portion (2542). The second diffuse reflection portion (2544) can be formed in the second region (T2). The second region (T2) is defined as the region excluding the lower side of the refracting lens (250) among the lower surfaces of the upper case (240). That is, the second diffuse reflection portion (2544) is formed so as not to overlap with the refracting lens (250) in the vertical direction.

[0058] As described above, when the end of the light collecting groove (252) and the diffuse reflection portion (254) are in contact with the circuit board (100), a space is not formed to accommodate the substrate member (140) arranged on the same surface as the LED (120). Accordingly, as illustrated in FIGS. 3 and 4, the upper case (240) may have a receiving groove (242) formed on the lower side where the substrate member (140) is positioned.

[0059]

[0060] In the above-described example, it was described that the diffuse reflection portion (254) is formed in both the first region (T1) and the second region (T2), but according to another embodiment of the present invention, as shown in FIG. 5, the diffuse reflection portion (254) may be formed in only one region among the first region (T1) and the second region (T2).

[0061] In addition, in the above-described example, it was described that the diffuse reflector (254) is in contact with the circuit board (100), but by adjusting the distance between the LED (120) and the diffuse reflector (254), the position of the light reaching the side or rear of the lower case (220) can be adjusted.

[0062]

[0063] Hereinafter, an ultra-wide-angle LED module (10) according to another embodiment of the present invention will be described. The overlapping configuration with the configuration described above in the ultra-wide-angle LED module (10) according to another embodiment of the present invention will be described.

[0064] FIG. 6 is a cross-sectional view of an upper case and a circuit board included in an ultra-wide-angle LED module according to another embodiment of the present invention, and FIG. 7 is a bottom view of the upper case illustrated in FIG. 6.

[0065] Referring to FIGS. 6 and 7, the upper case (240) may include a protrusion (256) that separates the diffuse reflection portion (254) and the circuit board (100). Accordingly, the diffuse reflection portion (254) may be formed to be spaced apart from the circuit board (100) by a predetermined distance or more. The protrusion (256) may be formed on the lower side of the refractive lens (250) in the upper case (240). Specifically, the protrusion (256) may be formed to extend from the refractive lens (250).

[0066] The protrusion (256) may be formed in a cylindrical shape with a hollow space. At this time, the hollow space may be positioned to communicate with the light collecting groove (252). The hollow space may be formed in a shape corresponding to the opening of the light collecting groove. The protrusion (256) may be formed from the same material as the upper case (240) or the refracting lens (250). The protrusion (256) may be formed integrally with the upper case (240) or the refracting lens (250).

[0067] At this time, a space is formed between a portion of the lower surface of the upper case (240) and the circuit board (100) by the protrusion (256), so that a space is formed in which the circuit board member (140) is placed, so that the upper case (240) can place the circuit board member (140) without forming a separate receiving groove (242). A diffuse reflection portion (254) may not be formed on the contact surface between the protrusion (256) and the circuit board (100).

[0068]

[0069] As shown in Fig. 8, a typical LED module is structured such that a transparent case or convex lens is provided in front of the LED, so that the diffusion angle of the light emitted by the LED is generally 125 degrees, and is formed to a maximum of 180 degrees, so that light cannot reach the rear of the LED module.

[0070] According to one embodiment of the present invention, as illustrated in FIG. 9, the light collecting groove (252) first refracts the light emitted by the LED (120) to collect the light of the LED module (10), and the concave groove (2540) of the diffuse reflection portion (254) second refracts the light emitted by the LED (120) and the light refracted by the light collecting groove (252) to have a diffusion angle of 200 to 240 degrees, thereby enabling the light emitted by the LED to reach not only the front but also the sides and rear of the ultra-wide-angle LED module, thereby improving the light emission efficiency.

[0071]

[0072] Although all components constituting the embodiments of the present invention have been described above as being combined or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined and operated one or more times. In addition, terms such as "include," "comprise," or "have" described above, unless specifically stated to the contrary, mean that the corresponding component may be inherent, and therefore should be interpreted as including other components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains, unless otherwise defined. Commonly used terms, such as terms defined in a dictionary, should be interpreted as being consistent with the contextual meaning of the related technology, and shall not be interpreted in an ideal or overly formal sense, unless explicitly defined in the present invention.

[0073] The above description is merely an illustrative description of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention, but rather to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A circuit board including at least one LED; A lower case having an open upper side and having the circuit board installed inside; and An upper case is coupled to the upper side of the lower case and includes a refractive lens that refracts light emitted by the LED, The above refractive lens is, A light collecting groove that accommodates the LED inside and refracts the light emitted by the LED for the first time; and A first reflective portion is formed with a plurality of concave grooves on the opposite surface of the circuit board to refract the light emitted by the LED in a second manner, The above first reflective part is, An ultra-wide-angle LED module arranged to be in contact with the above circuit board.

2. In paragraph 1, The above upper case, An ultra-wide-angle LED module having a receiving groove on a surface facing the circuit board in which substrate members arranged on the circuit board are positioned.

3. In paragraph 1, The above concave groove is, The opening is formed in a square shape, The above plurality of concave grooves are, Ultra-wide-angle LED modules arranged so that each side is in contact with the other.

4. In paragraph 1, The above upper case, An ultra-wide-angle LED module having a second reflective portion formed with a plurality of concave grooves on the lower surface to refract light emitted by the LED.

5. In paragraph 4, The above second reflective part is, An ultra-wide-angle LED module formed by extending from the first reflective portion.

6. A circuit board including at least one LED; A lower case having an open upper side and having the circuit board installed inside; and An upper case is coupled to the upper side of the lower case and includes a refractive lens that refracts light emitted by the LED, The above refractive lens is, A light collecting groove that accommodates the LED inside and refracts the light emitted by the LED for the first time; and A first reflective portion is formed with a plurality of concave grooves on the opposite surface of the circuit board to refract the light emitted by the LED in a second manner, The above first reflective part is, An ultra-wide-angle LED module arranged so as to be spaced apart from the circuit board by a preset distance or more.

7. In paragraph 6, The above refractive lens is, An ultra-wide-angle LED module further comprising a protrusion formed in the direction of the circuit board to separate the first reflective portion and the circuit board.

8. In paragraph 7, The above protrusion is, An ultra-wide-angle LED module in which a cavity is formed and communicates with the light collecting groove and accommodates the LED inside.

9. In paragraph 6, The above concave groove is, The opening is formed in a square shape, The above plurality of concave grooves are, Ultra-wide-angle LED modules arranged so that each side is in contact with the other.

10. In paragraph 6, The above upper case, An ultra-wide-angle LED module having a second reflective portion formed with a plurality of concave grooves on the lower surface to refract light emitted by the LED.

11. In paragraph 10, The above second reflective part is, An ultra-wide-angle LED module formed by extending from the first reflective portion.

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