JP2022170662A - Led lighting unit, led lighting module, and led lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide: an LED lighting unit which can reduce operation man-hours and installation man-hours of an LED lighting apparatus; and the LED lighting apparatus.

SOLUTION: An LED lighting unit comprises: an elongate LED substrate provided with multiple LED packages; a wide-angle lens bar that is substantially as long as the LED substrate and configured to diffuse emitted light emitted from the multiple LED packages; a water-proof DC power supply unit to convert an input AC voltage into a DC voltage and to supply the DC power to the elongate LED substrate; and a male connector and a female connector for connection through connector-equipped transition wiring. The wide-angle lens bar has a hollow shape, and comprises an accommodation part to accommodate the LED substrate, and a diffusing surface to diffuse the emitted light. The elongate LED substrate is accommodated in the accommodation part of the wide-angle lens bar to form an integral structure.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to an LED lighting unit, and more particularly to an LED lighting unit suitable for reducing man-hours for installing and working on an LED lighting device.

2. Description of the Related Art Conventionally, incandescent lamps and fluorescent lamps have been used as light sources for outdoor lighting devices such as illuminated signboards. In recent years, it has become possible to increase the output of LED point light sources and save power, so LEDs are rapidly replacing incandescent lamps and fluorescent lamps as light sources not only for indoor lighting devices but also for outdoor lighting devices.

Since the outdoor lighting device is installed outdoors, it is desirable to have a waterproof structure. This is because rainwater or the like may cause the wiring of the LED substrate to corrode or short-circuit unless it has a waterproof structure.

Japanese Patent No. 5403775 (Patent Document 1) can be cited as an example of a waterproof lighting device. The lighting device of Patent Document 1 realizes a signboard lighting device with a simple structure and excellent waterproofness. As shown in FIG. 3 of the publication, this illumination device has a lens portion having an incident surface 21a on which light is incident and output surfaces 21b and 21c for diffusing the light incident on the incident surface 21a and outputting it to the outside. 21, a light-transmitting member 2 having the same cross-sectional shape along the longitudinal direction; a substrate 3 arranged inside the light-transmitting member 2 along the longitudinal direction; and an LED module 30 for emitting light to the incident surface 21a of the optical member 2. As shown in FIG.

Another example of the LED lighting type signboard device is disclosed in, for example, Japanese Patent Application Laid-Open No. 2011-227352 (Patent Document 2). In the lighting device of Patent Document 2, LED lighting devices are installed at an angle near both ends of a box-shaped signboard, and the angle (strong directivity) of the LEDs is used to illuminate the entire inside of the device.

Japanese Patent No. 5403775 JP 2011-227352 A

In the above-mentioned Patent Document 1, since the incident light is diffused in the width direction of the substrate orthogonal to the longitudinal direction of the lamp by sealing both ends of the lens and emitted, the light is emitted only in the direction perpendicular to the lamp (=there is no light in the longitudinal direction of the lamp). ), there is a problem that the ends of the lamp become dark (see FIG. 19(a)). In addition, since it is often the case that the lights are arranged continuously in actual lighting arrangements, in this case, it is necessary to overlap the ends of the lighting fixtures in order to cover the dark areas, resulting in the problem of light loss. (See FIG. 19(b)).

In the above Patent Document 1, as in paragraphs [0027] and [0053], there is only a description that "power is supplied from a power supply not shown", and the connection with the power supply in consideration of waterproofness and the location of the power supply The location (place of installation) was not taken into consideration.
The shape of the translucent member is an acute-angled M-shaped structure. This is to facilitate extrusion molding. However, in terms of lens performance, the diffusion performance is lowered. In order to compensate for this, a light-transmitting member contains a diffusing material, but variations in the diffusing material may cause unevenness in lens performance.

In Patent Document 2, since the LED lighting device is inclined near both ends of the box-shaped lighting signboard (at an angle) to emit light, it is difficult to adjust the angle, and uneven lighting occurs if the adjustment is not successful. There was a problem.

An object of the present invention is to solve such conventional problems and to provide an LED lighting unit, an LED lighting module, and an LED lighting device that are suitable for reducing the installation man-hours and work man-hours for the LED lighting device.

In order to solve the above problems, the LED lighting unit of the present invention has the following configuration.
As a first invention, a long LED substrate on which a plurality of LED packages are mounted;
A wide-angle lens bar having a length substantially equal to that of the LED substrate, which spreads the light emitted from the plurality of LED packages, converts an input AC voltage to DC, and supplies DC power to the elongated LED substrate. An LED lighting unit comprising a waterproof DC power supply unit, and a male connector and a female connector for connection by a crossover wire with a connector, wherein the wide-angle lens bar has a hollow shape, and an accommodating portion for accommodating the LED substrate. and a diffusing surface for diffusing the emitted light, and the elongated LED substrate is accommodated in the accommodating portion of the wide-angle lens bar to form an integral structure (corresponding to claim 1).

In addition to the above configuration, the diffusion surface has a fine structure in the upper half and a coarse structure in the lower half (corresponding to claim 2).

In addition to the above configuration, an LED lighting module (corresponding to claim 3) in which a plurality of LED lighting units according to paragraph [0011] or [0012] are connected.

An LED lighting device (corresponding to claim 4) having at least one LED lighting unit according to paragraph [0011] or [0012] in addition to the above configuration.

An LED illumination device comprising at least one LED illumination module according to paragraph [0013] (corresponding to claim 5).

In addition to the above configuration, the wide-angle lens bar is an LED illumination unit manufactured by high-precision optical extrusion molding (corresponding to claim 6).

ADVANTAGE OF THE INVENTION According to this invention, the LED lighting unit and LED lighting device suitable for reducing the installation man-hour and work man-hour of an LED lighting device are realizable.

The drawings show specific embodiments of the present invention according to the present disclosure and include not only essential features of the invention, but also optional and preferred embodiments.
The block diagram of the LED lighting unit of this embodiment. FIG. 2 is an exploded configuration diagram of the LED lighting unit of the embodiment; (a) and (b) are diagrams for explaining the relationship between the wide-angle lens bar and the elongated LEDs in the LED lighting unit of the present embodiment. Sectional drawing of the wide-angle lens bar in the LED lighting unit in this embodiment. The figure which shows the example which applied the LED lighting unit of this embodiment to the signboard. The figure which shows the example which connected the LED lighting unit of this embodiment. The figure which shows the example which installed the connection LED lighting unit of FIG. 6 in the signboard. The figure which shows the example of power supply unit separation of the LED lighting unit of this embodiment. FIG. 9 is an exploded configuration diagram of the LED lighting unit in FIG. 8 ; FIG. 2 is a configuration diagram of an LED illumination module connection type LED illumination unit according to the present embodiment. FIG. 11 is an exploded configuration diagram of the LED lighting unit in FIG. 10 ; The figure which shows the example of the signboard which installed the LED lighting unit of this embodiment horizontally. FIG. 3 is an explanatory diagram of a comparison test between a signboard to which the LED lighting unit of the present embodiment is applied and a conventional signboard. The figure which shows the comparative test result of FIG. (a) and (b) are diagrams showing an example in which the wide-angle lens bar of the LED lighting unit of the present embodiment is provided with a diffusion slit. The figure which shows the light distribution characteristic measurement result of an LED package. (a) and (b) are configuration diagrams of a long tape type lighting unit according to another embodiment. FIG. 18 is a diagram showing an example in which the lighting unit of FIG. 17 is applied to a signboard; FIG. 2 is a diagram for explaining conventional problems; The figure which shows the example of the single-sided light emission signboard to which the LED lighting unit of this embodiment is applied.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described based on the drawings.

<Embodiment>
FIG. 1 is a configuration diagram of the LED lighting unit of this embodiment, FIG. 2 shows an exploded configuration diagram of the LED lighting unit of this embodiment, and FIGS. It is a figure for demonstrating the relationship between a wide-angle lens bar and long LED.

The configuration of the LED lighting unit of Embodiment 1 will be described below with reference to FIGS.

<Configuration>
As shown in FIGS. 1, 2, and 3(a) and (b), this LED lighting unit includes a long LED board 1, an integrated wide-angle lens bar 2, a power end cap 3, and a power end cap. Upper 3a, lower power supply end cap 3b, waterproof cable 4, waterproof male connector 5, waterproof female connector 6, end cap 7, screws 8, 9, waterproof DC power supply 10, screws 11, 12 and an LED package 13 .

The "long LED board" 1 has a plurality of LED packages 13 mounted on an aluminum board, and constitutes the light source of the LED lighting unit. As the LED package 13, for example, middle power LED series 2835, 0.2 W, 3 V, Ra80 manufactured by Samson Co., Ltd. of Korea can be used. The size of this LED package is 2.8×3.5×0.65 mm. The LED package can be mounted on an aluminum substrate using a double-sided circuit (a DC circuit on the LED surface and an AC circuit on the back surface, with lead wires drawn out from both ends of the aluminum substrate). When manufacturing a signboard, an epoxy resin substrate may be used, and the wire lead-out may be configured as a one-end lead-out.
As for the length of the LED substrate, sizes such as approximately 300 mm, 600 mm, 900 mm, 1200 mm, and 1500 mm are prepared. An LED substrate having such a size is selectively used according to the size of a single-sided light emitting signboard, for example. In the case of producing an original signboard, the length of the LED board can be set to any length, and the signboard using the LED board of any length can be manufactured (manufactured).

A "wide-angle lens bar" 2 has a length approximately equal to that of the LED substrate 1, which spreads the emitted light emitted from the plurality of LED packages. The wide-angle lens bar 2 has a hollow shape, and has an accommodation portion for accommodating the LED substrate 1 and a diffusion surface for diffusing emitted light (see FIGS. 15A and 15B). The diffusing surface may, for example, have a fine structure in the upper half and a coarse structure in the lower half. The fine structure and coarse structure are not necessarily essential, and can be appropriately selected and employed according to the required specifications of the desired single-sided light emitting signboard.
The wide-angle lens bar 2 is made of a resin material such as PVC, RR, PE, ABS, PS, PS, PET, PC and PMMA. In this embodiment, a polycarbonate resin is used and manufactured by high-precision optical extrusion using a high-precision extruder. This is because the desired lens performance could not be obtained by ordinary resin extrusion molding.
The high-precision extruder has (1) higher control accuracy of temperature, humidity, and higher cleanliness of raw material extrusion. (2) The temperature of the material melted during extrusion can be controlled with high precision. (3) Extrusion pressure precision control to better control the amount of material flowing.

The high-precision extruder uses pre-processed steel as the material for the mold, and the mold processing technology is advanced 50 HRC, the material density is high, the cleanliness after surface treatment (mirror engraving, polishing) is RA 0.012, and the characteristics are corrosion resistance. have. The mold has high hardness and cleanliness and is stable. In addition, molding is highly accurate and stable. The manufacturing process of high-precision extrusion divides extrusion into three stages: "preforming", "molding correction", and "final high-precision molding". Higher specs can be achieved.

15(a) and 15(b) are schematic cross-sections of the wide-angle lens bar 2 manufactured in this way and the elongated LED substrate 1 is mounted thereon, and FIG. 4 is a detailed cross-section. As shown in FIG. 4, the elongated LED substrate is accommodated in the accommodating portion of the wide-angle lens bar to form an integral structure. The method of fixing the wide-angle lens bar 2 of the long LED board 1 is performed by fixing with an adhesive or by fitting (fitting) into an aluminum extrusion. As shown in FIG. 15A, the wide-angle lens bar 2 has an upper diffusing surface 62 whose upper half has a fine structure and a lower diffusing surface 63 whose lower half has a coarse structure. The surfaces 62 and 63 may have a slit-like structure 64 as shown in FIG. 15(b).

The light distribution characteristics of the wide-angle lens bar-integrated LED light source having the configuration shown in FIG. 4 were actually measured, and the results will be described below. A goniophotometer (light distribution measuring instrument) manufactured by everfine "G0-2000" was used as a measuring instrument. As for the measurement conditions, the input voltage to the wide-angle lens bar was DC 60 V, and the input current to the wide-angle lens bar was 80 mA.
As shown in FIG. 4 , emitted light emitted from the LED package 13 is diffused by the diffusion surface 14 , and the diffused emitted light 15 is diffused and emitted from the wide-angle lens bar 2 . The printed circuit board is 0.7 mm, the width of the LED package is 3.5 mm, the height of the housing part is 1.5 mm, the width is 20.5 mm, and the diffusion angle is 181.5 degrees. FIG. 16 shows the light distribution curve of the LED light source in which the LED package 13 is mounted on the integrated wide-angle lens bar 2 . In FIG. 16, C0/180 degrees, 109.5 degrees, C30/210 degrees, 136.4 degrees C60/240 degrees, 181.5 degrees, C90/270 degrees, 167.1 degrees. The average luminous flux angle is 148.6 degrees at 50%. When only the LED package is used as the light source, the luminous flux immediately below the light emitting portion is the maximum, and the portion near the light emitting portion is bright, and the portion away from the light emitting portion becomes dark. When the wide-angle lens bar 2 is used, as shown in the light distribution diagram of FIG. 16, the light-emitting portion becomes nearly flat, which makes it possible to uniformly irradiate the light from the surface.

The "power supply end cap" 3 incorporates a waterproof DC power supply unit and is composed of an upper power supply end cap 3a and a lower power supply end cap 3b, which are filled with silicon resin or the like to make the DC power supply unit waterproof. An upper power end cap 3a and a lower power end cap 3b are attached by screws 11 and 12, respectively. The waterproof specification is IP65.

The "waterproof cable" 4 is a waterproof cable.

A "waterproof male connector" 5 is a connector for supplying an external AC power supply, and has a male structure for connection by a connecting wire with a connector.

A "waterproof female connector" 6 is a connector for connecting with a waterproof male connector of another LED lighting unit by a crossover wire with a connector, and has a female structure. Needless to say, the final end need not be connected to other devices.

An "end cap" 7 is a transparent cover for the termination and is attached by screws 8,9. Since the end cap is transparent, the emitted light from the LED light source can illuminate the surroundings without darkening the end portion.

The “waterproof DC power supply device” 10 is an IP65 waterproof DC power supply unit that converts an input AC voltage into DC and supplies DC power to the long LED substrate 1 .

For example, as shown in FIG. 5, an illuminated signboard can be assembled simply by installing LED lighting units 21, 22, 23, and 24 in a signboard body 20 and connecting connecting portions 25, 26, and 27 with connectors. The input voltage corresponds to 100V to 200V AC. FIG. 6 shows a state in which a plurality of LED lighting units are connected. FIG. 7 shows a perspective view of the illuminated signboard of FIG. In the example of FIG. 6, the connection configuration is such that the LED lighting unit main body L-shaped connection and the waterproof cable are connected. As shown in FIG. 7, the LED lighting units are arranged vertically with respect to the one-sided horizontally long signboard, but the LED lighting units may be arranged horizontally in consideration of maintainability. In this case, a long waterproof cable as shown in FIG. 12 may be used, and a single-sided board with one end of the power supply connected may be used. The LED lighting unit is attached to the signboard main body by a removable method such as screwing for replacement of the LED lighting unit.

The configuration of another lighting unit according to the embodiment will be described below with reference to FIGS. 8 and 9. FIG.

<Configuration>
As shown in FIG. 8, this LED lighting unit includes an LED package 13, an elongated LED board 1, an integrated wide-angle lens bar 2, end caps 7 and 31, an upper power cap 30a, and a lower power cap. 30b, waterproof cable 4, waterproof male connector 5, waterproof female connector 6, upper end cap 31a, lower end cap 31b, mounting holes 34, 35, screws 32, 33, 36, 37, waterproof DC power supply units 10 and 30 of the type shown in FIG.
8 is the same as the embodiment of FIG. 1 described above, except that the wide-angle lens bar and the waterproof DC power supply unit are connected by a waterproof cable (electric wire), so the description is omitted.

The "prevention type DC power supply" 30 employs a separate configuration from the wide-angle lens bar. . With such a separate configuration, the degree of freedom in installation layout can be ensured.
Mounting holes 34 and 35 are also provided on the opposite side of each end cap, and are fixedly installed on the signboard body by screwing.

FIG. 10 is a diagram showing an example of an LED lighting unit with two LED lamps, and FIG. 11 is an exploded view of the two-lamp LED lighting unit in FIG.

As shown in FIG. 10, the two-lamp type LED lighting unit 41 has an LED lighting module 44 with a waterproof DC power supply and an LED lighting module 45 without a waterproof DC power supply, connected by a waterproof cable 53, and connected to a power supply end. Caps 51a, 51b and end caps 52a, 52b constitute end portions, and one prevention male connector 5 or waterproof female connector 6 is provided at both ends. With such a configuration, the number of parts can be reduced, so cost reduction can be achieved.
The LED lighting unit 42 also has the same configuration as the LED lighting unit 41 described above, and is connected by a connecting portion 43 .

Fig. 13 and Fig. 14 show the results of a comparison illuminance test measurement of a single-sided light-emitting signboard manufactured with the LED lighting unit of this embodiment (with a wide-angle lens bar) and a single-side light-emitting signboard manufactured with a conventional LED lighting unit (without a wide-angle lens bar). indicates Describe the experimental environment. The illuminance meter used was "V08111" manufactured by everfine. As for the measurement conditions, the input voltage to the wide-angle lens bar was AC 110 V, and the input current to the wide-angle lens bar was 0.1633 mA. The specification of the single-sided signboard, which is the test equipment, will be explained. The size of the single-sided signboard is 700mm x 1400mm, 3 LED lighting units are screwed to the main body of the signboard (the LED package uses Samsung 2835 mentioned above), milky white acrylic cover (thickness 3mm, transmittance 54.4). %) The mounting structure and the 15 illuminance measurement points (points) were set to the same conditions. Also, the LED package light source of the LED lighting unit was the same, and a comparative illuminance measurement was performed with and without the wide-angle lens bar. The illuminance measurement results are as shown in FIG. With the wide-angle lens bar, from the measurement results in FIG. 14, the minimum value was 6010 lux, the maximum value was 8110 lux, the average value was 6963 lux, and the degree of uniformity was 75%. In the case without the wide-angle lens bar, the measurement results in FIG. 14 showed a minimum value of 4564 lux, a maximum value of 8338 lux, an average value of 6061 lux, and a degree of uniformity of 58%.
From the above measurement results, it was found that the illuminance was considerably improved with the wide-angle lens bar. That is, an improvement in the degree of uniformity was observed.

20(a) and 20(b) are diagrams showing an example of a single-sided light emitting signboard to which the LED lighting unit of this embodiment is applied. FIG. 20(a) shows a state in which the LED lighting unit of this embodiment is installed horizontally on a single-sided signboard with the cover removed. This is a schematic representation of the LED lighting unit, and in detail, the installation state is as shown in FIG. FIG. 20(b) shows an example of an FF (flexible face) openable facade signboard, and the signboard shows an example of a Chinese restaurant signboard. This sign is openable and easy to maintain. When replacing the LED lighting unit, the LED lighting unit can be easily removed by opening the signboard cover with a support rod or the like (not shown). Also, the structure is easy to clean. Naturally, the signboard device itself using this LED lighting unit is also waterproof.

As described above, according to the LED lighting unit of the present embodiment, since the structure of the LED lighting unit is equipped with a waterproof DC power supply, it is possible to reduce the number of man-hours for installation and the man-hours for workers when applied to an illuminated signboard. .

FIGS. 17A and 17B are partial configuration diagrams of lighting units according to other embodiments. Another embodiment is a linear light source type lighting unit that employs an FCOB tape light as a light source instead of a long LED board on which a plurality of LED package light sources are arranged. FIGS. 17(a) and 17(b) show an example in which an FCOB tape light 65 is adhered to a substrate with an adhesive and accommodated in the accommodating portion of the integrated wide-angle lens bar 2, which is characteristic of this embodiment. The FCOB tape light is a seamless & dotless tape light. The entire yellow or white fluorescent resin part shines, and the light is on a line without dots. FIG. 18 shows an example in which the lighting unit of FIG. 17 is applied to a signboard. FIG. 18 shows a configuration in which lighting units 71, 72, 73, and 74 are attached to a signboard body 70 with screws, and are connected at connecting portions 75, 76, and 77 by connector transition wiring. The encircled view in Fig. 18 shows an enlarged internal view of the wide-angle lens bar 2. A linear light source 66 is provided above the FCOB tape light 65 .

As described above, according to another embodiment, the lighting unit emits dotless line-shaped light, which is not possible with the LED light source. realizable.

1 long LED board 2 integrated wide-angle lens bar 3 power end cap 3a upper power end cap 3b lower power end cap 4 waterproof cable 5 waterproof male connector 6 waterproof female connector 7 end cap 8, 9 screw 10 waterproof DC power supply 11 , 12 screws

Claims (6)

a long LED board on which a plurality of LED packages are mounted;
a wide-angle lens bar having a length substantially equal to that of the LED substrate for expanding light emitted from the plurality of LED packages;
a waterproof DC power supply unit that converts an input AC voltage to DC and supplies DC power to the elongated LED substrate;
An LED lighting unit having a male connector and a female connector for connection by a connecting wire with a connector,
The wide-angle lens bar has a hollow shape, and has an accommodation portion for accommodating the LED substrate and a diffusion surface for diffusing the emitted light,
An LED lighting unit, wherein the elongated LED substrate is accommodated in the accommodating portion of the wide-angle lens bar to form an integral structure. 2. The LED lighting unit according to claim 1, wherein the diffusion surface has a fine structure in the upper half and a rough structure in the lower half. An LED lighting module comprising a plurality of LED lighting units according to claim 1 or 2 connected together. An LED lighting device comprising at least one LED lighting unit according to claim 1 or 2. An LED lighting device comprising at least one LED lighting module according to claim 3 . 3. The LED lighting unit according to claim 1, wherein the wide-angle lens bar is manufactured by high-precision optical extrusion molding.

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