Lighting equipment

Abstract

To provide a lighting device which has both a lighting function and a sterilizing function, is simply configured and easy to carry, and can be used in combination of a plurality of units. [Solution] The lighting device 2 includes an LED board 12 having a plurality of LEDs, a first connection means 11 that mediates power supply to the LED board 12, and a housing 10 that houses the LED board 12, and the peak wavelength of light output by at least one LED 13 among the plurality of LEDs is within 405 nm ± 10 nm. The first connection means 11 can be a USB plug or a USB port. The lighting device 2 can further include a second connection means 15 and a power supply control unit 16 that controls the power supplied from an external power supply 20 via the first connection means 11 and supplies power to the second connection means 15 and / or the LED board 12. One of the first connection means 11 and the second connection means 15 may be a USB plug, and the other may be a USB port.

Description

[Technical field]

[0001] This invention relates to a lighting device that uses LEDs as a light source that emits visible light with sterilizing properties and is harmless to the human body, and also to a lighting device that can be assembled like a puzzle by combining multiple lighting devices. [Background technology]

[0002] Ultraviolet light has a germicidal effect, and it is known that ultraviolet light with a wavelength of 254 nm (UV-C) in particular has a very strong germicidal effect that can destroy DNA. However, along with its germicidal effect, it also has a strong effect on the human body, being harmful to the skin and eyes. In addition, ultraviolet light with wavelengths of 280 to 320 nm (UV-B) and 320 to 400 nm (UV-A) also has a germicidal effect, but it has also been confirmed that it also has some effect on the human body.

[0003] In recent years, visible light with a wavelength of 405 nm has been used as germicidal lighting. Light with a wavelength of 405 nm is visible light adjacent to the ultraviolet region, so it has a germicidal effect similar to that of ultraviolet light. Visible light with a wavelength of 405 nm does not have a germicidal effect strong enough to destroy DNA like ultraviolet light, but it has been confirmed to have a germicidal effect against certain bacteria and viruses. In addition, because it is in the visible light region, it has little effect on the human body, and it also has the advantages of LEDs, such as small size, low power consumption, and long life, so it is expected to be used in various places such as hospitals, public facilities, restaurants, and homes. For this reason, various lighting fixtures and lighting devices using light with a wavelength of 405 nm have been developed.

[0004] For example, Patent Document 1 discloses a lighting fixture that emits light with a central wavelength of 405 nm ± 10 nm. This lighting fixture includes a light source module and a light attenuation unit, and the light source module generates output light consisting of multiple wavelengths. This invention provides a lighting fixture that adjusts the light intensity of different wavelength bands, thereby providing sufficient illuminance and also having the effect of removing bacteria.

[0005] Patent Document 2 discloses an LED lighting device configured to be used as a supplementary lighting device that emits supplementary lighting light in the presence of a main lighting light for illuminating a desired target space. This lighting device includes a housing having an illumination light emission surface, a plurality of LED light sources, an LED driving circuit, and an optical lens disposed inside the housing. According to this invention, pseudo-white light containing visible light (e.g., blue-violet light with a peak wavelength of approximately 405 nm) that has the effect of inactivating microorganisms such as bacteria and viruses as a component can be emitted as lighting light, and can be manufactured at a lower cost than conventional devices. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3246068 [Patent Document 2] Patent No. 7368647 Summary of the Invention [Problem to be solved by the invention]

[0007] Both the lighting fixture of Patent Document 1 and the lighting device of Patent Document 2 use light with a wavelength of 405 nm and have a sterilizing effect. As mentioned above, the light is harmless to the human body, so it can be used safely. However, the light source module of the lighting fixture of Patent Document 1 has a complex structure because it generates emitted light consisting of multiple wavelengths. In addition, the lighting device of Patent Document 2 is configured to be used as an auxiliary lighting device, but has a large number of parts. Therefore, a lighting device with a simpler configuration, which is easy to carry and install in various places, is desired. Furthermore, a lighting device in which the size and brightness can be adjusted by combining multiple lighting devices like a puzzle is desired.

[0008] SUMMARY OF THE PRESENT DISCLOSURE In view of the above problems, the present invention aims to provide a lighting device that combines lighting and sterilization functions, has a simple structure and is easy to carry, and can be used in combination with multiple units. [Means for solving the problem]

[0009] In order to achieve the above object, the lighting device of the present invention comprises an LED board having a plurality of LEDs, a first connection means for mediating power supply to the LED board, and a housing for accommodating the LED board, and at least one of the plurality of LEDs outputs light with a peak wavelength of 405 nm ± 10 nm. Additionally, the first connection means may be a USB plug or a USB port. The light emitting diode may further include a second connection means and a power supply control unit that controls the power supplied from an external power source via the first connection means to supply power to the second connection means and / or the LED board. Furthermore, one of the first connection means and the second connection means may be a USB plug, and the other may be a USB port. Effect of the Invention

[0010] The lighting device of the present invention has both lighting and sterilization functions, is simple in structure, easy to carry, and has a high degree of freedom in installation. In addition, multiple lighting devices can be combined like a puzzle. [Brief description of the drawings]

[0011] [Figure 1] 1 is an explanatory diagram showing an outline of a lighting device according to a first embodiment of the present invention; [Diagram 2] 2 is a block diagram showing a configuration of the lighting device of FIG. 1. [Diagram 3] FIG. 2 is an explanatory diagram of the lighting device of FIG. [Figure 4] 2 is an explanatory diagram showing a usage mode of a plurality of the lighting devices of FIG. 1. [Diagram 5] FIG. 5 is a block diagram showing the configuration of a lighting device according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a block diagram showing a configuration in which the lighting devices in FIG. 5 are connected in series. [Figure 7]6 is an explanatory diagram showing a usage mode of the lighting device in FIG. 5. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention (hereinafter, referred to as an embodiment) will be described with reference to the drawings. In the following drawings, the same reference numerals are used to designate the same parts, and the duplicated description of the parts with the same reference numerals will be omitted. EXAMPLES

[0013] The lighting device 1 in the first embodiment of the present invention will be described in detail with reference to Figs. 1 to 4. Fig. 1 is an explanatory diagram showing the outline of the lighting device 1, Fig. 2 is a block diagram showing the configuration of the lighting device 1, Fig. 3 is an explanatory diagram of the lighting device 1, Fig. 3(A) is a plan view of the lighting device 1 with the top surface of the housing 10 removed, (B) is a front view, and (C) is a right side view. Fig. 4 is an explanatory diagram showing a usage mode of multiple lighting devices 1. As shown in Fig. 1, the lighting device 1 of the present invention is compact and easy to carry. As shown in Figs. 1 and 2, the lighting device 1 includes an LED board 12 having multiple LEDs, a first connection means for feeding power to the LED board 12, and a housing 10 for accommodating the LED board 12.

[0014] In this embodiment, a USB plug 11 (the plug-in side) is used as the first connection means. The USB plug 11 is connected to an external power source or terminal. As shown in Figs. 1 and 3, the USB plug 11 is provided on an end face in the longitudinal direction of the lighting device 1. The USB plug 11 is provided to mediate the supply of power to the LED board 12, and is connected to the LED board 12. The USB plug 11 is used by being inserted into a USB port (the plug-in side) of a personal computer, hub, etc., and mediates the supply of power to the LED board 12. The first connection means is not limited to this embodiment, and may be a USB port instead of the USB plug 11, or may be a connection means other than a USB plug (for example, an outlet plug).

[0015] The USB plug is of the type USB-A, USB-C, or Micro-USB, but in this embodiment, the most common type USB-A plug is used. The USB plug 11 is used in a USB-A type USB port with a 5V output, such as a personal computer, a charger, or an in-vehicle charger (via a cigarette lighter socket). As shown in FIG. 1, the USB plug can be connected to a terminal where the space of the lighting device 1 is not sufficient, via a USB flexible arm 30 (extension cable). In addition, if a USB conversion adapter (not shown) is used, the terminal can be changed to another type (USB-C, Micro-USB). The USB plug used for the first connection means is not limited to that in this embodiment, and another type of USB plug may be used.

[0016] Of the multiple LEDs used in this embodiment, at least one LED 13 outputs light with a peak wavelength of 405 nm ± 10 nm. It is preferable that the peak wavelength is 405 nm. The LED 13 with a peak wavelength of 405 nm emits visible light, and as described above, has little effect on the human body, so it can be used safely even in spaces where people are present. There is no particular limit to the number of LEDs 13 installed on the LED substrate 12, and any number may be installed. In this embodiment, six LEDs are installed as shown in FIG. 2.

[0017] As shown in FIG. 3(A), the LED 13 can be installed in combination with a normal LED (such as a white LED or a full-color LED). By combining a normal LED with the LED 13, sufficient illuminance can be obtained and the LED can be manufactured at low cost. In this embodiment, as shown in FIG. 3(A), six LEDs 13 and five full-color LEDs 130 are arranged in a line and used like a small fluorescent lamp. In this case, the brightness (illuminance) of the light is about 500 lux, which is equivalent to the brightness of a typical office or school classroom.

[0018] The LED substrate 12 is a substrate for mounting an LED chip, and is made of an aluminum substrate or a copper substrate with high heat dissipation properties. In this embodiment, an aluminum substrate is used. Like a typical LED substrate, the LED substrate 12 is made up of an aluminum substrate (base layer), a wiring layer that forms a path for supplying current to the LED, an insulating layer (thermal conduction layer) that transfers heat generated by the LED to the substrate, an LED chip, and components such as resistors and capacitors.

[0019] The housing 10 that houses the LED substrate 12 must have a shape and dimensions that allow it to house the LED substrate 12. In this embodiment, the housing 10 is molded in a rectangular parallelepiped shape as shown in FIG. 1. By forming the housing 10 in a rectangular parallelepiped shape, it is easy to process plastics and the like, is easy to carry, and is compact, so that it can be installed in various locations. The dimensions of the housing 10 are, for example, about 200 mm in the longitudinal direction, 30 mm in the lateral direction, and 15 mm in height. The shape and dimensions of the housing 10 are not limited to those of this embodiment, and any shape and dimensions may be used as long as it can house the LED substrate 12.

[0020] The housing 10 is made of a material that takes heat dissipation into consideration, such as aluminum or plastic (synthetic resin). The top surface of the housing 10 (the surface facing the LED chip on the board) is made of white, semi-transparent or transparent plastic, glass, or the like, so as to diffuse the light of the LED 13. In this embodiment, white plastic is used. This allows the light to be diffused uniformly inside and irradiated efficiently. In addition, it is lightweight, easy to process, and has high insulation properties, making it safe. White plastic may be used not only on the top surface of the housing 10, but also on the sides and bottom. In this embodiment, aluminum, which has higher heat dissipation properties, is used for the bottom surface of the housing 10 (not shown). The material of the housing 10 is not limited to this embodiment, and any material that takes heat dissipation into consideration may be used.

[0021] As shown in Fig. 2(B) and Fig. 3, the lighting device 1 can be provided with a switch 14 (operation unit). The switch 14 can be switched on and off, and when it is on, it supplies power to the LED board. When using the lighting device 1, the user turns on the switch 14 to turn on the light. The switch 14 is not an essential component of the present invention, but providing the switch 14 makes it easier to switch the light on and off, making it more convenient. In this embodiment, as shown in Fig. 3, a push button type switch 14 is provided, but any means such as a slide type or a touch type may be used as long as it can switch the power on and off. In addition, a switch for switching lighting patterns or a timer switch may be provided (not shown).

[0022] Since the lighting device 1 of this embodiment is configured as described above, it can be carried with one hand and installed without taking up space, so it can be used for various purposes as lighting and sterilization means. By inserting the USB plug 11 into a USB port of a computer, charger, car charger (via cigarette lighter socket), etc., lighting can be easily obtained, making it possible to work in dark places. Furthermore, the use of a USB flexible arm 30 (extension cable) increases the freedom of installation. LEDs that emit a wavelength of 405 nm have been proven to be effective in inactivating the new coronavirus (Omicron strain) in about 12 hours, and have also been shown to have a high reduction effect on influenza viruses, etc. Therefore, by using the lighting device 1 of this embodiment, the effects of sterilization lighting and space sterilization can be expected. In particular, it can be effectively used as infection prevention, hygiene management, air purification, and LED lighting in various places such as hospitals, schools, restaurants, public transportation, food processing factories, and homes.

[0023] FIG. 4 is an explanatory diagram showing a usage state of a plurality of lighting devices 1. Although only one lighting device 1 can be used as described above, the effect of the present invention can be further obtained by using a plurality of lighting devices. FIG. 4(A) shows a usage state in which two lighting devices 1 are connected in parallel via a USB hub 40. This provides an illuminance of about 1000 lux, which is twice the illuminance of one lighting device 1, about 500 lux. FIG. 4(B) shows a usage state in which four lighting devices 1 are connected to a USB hub 41. FIG. 4(C) shows a usage state in which eight lighting devices 1 are connected to a USB hub 42. By using an octagonal USB hub 42, the lighting devices 1 can be installed in a radial manner, so sufficient illuminance and sterilization effect can be obtained. In this way, by combining a plurality of lighting devices 1 like a puzzle via a USB hub and using them simultaneously, the illuminance and sterilization effect required by the user can be obtained.

[0024] Since the output of a USB port on a personal computer or the like is a maximum of 5V, if multiple lighting devices 1 are used via a USB hub, the power is distributed and sufficient power is not supplied to each lighting device 1. For this reason, it is preferable to use a type of USB hub that supplies power directly from an AC power source (outlet), which allows stable power supply to multiple lighting devices 1. The manner of use of multiple lighting devices 1 is not limited to the examples shown in Figs. 4(A) to (C), and various types of USB hubs can be used. Furthermore, if the first connection means is a connection means other than a USB plug, for example, an outlet plug, multiple lighting devices 1 can be used simultaneously by using a power strip with multiple sockets. EXAMPLES

[0025] The lighting device 2 in the second embodiment of the present invention will be described in detail with reference to Figs. 5 to 7. Fig. 5 is a block diagram showing the configuration of the lighting device 2 in this embodiment, and Fig. 6 is a block diagram showing the configuration when the lighting devices 2 are connected in series. In the block diagrams of Figs. 5 and 6, only the LED 13 is shown to avoid the complexity of the diagram, but it is preferable to use it in combination with a normal LED 130 as in the first embodiment. Fig. 7 is an explanatory diagram showing the usage of the lighting device 2. As shown in Fig. 5, the lighting device 2 in this embodiment has the same configuration as the lighting device 1 in the first embodiment except for the newly added USB port 15 and power control unit 16. Therefore, the description of them will be omitted, and the configuration different from the lighting device 1 in the first embodiment and its effect will be described.

[0026] 5, in addition to the components of the lighting device 1, the lighting device 2 includes a second connecting means 15 and a power supply control unit 16 that controls the power supplied from the external power supply 20 via the first connecting means 11 to supply power to the second connecting means 15 and / or the LED board. The second connecting means is provided on an end face of the lighting device 2 in the longitudinal direction, the face facing the first connecting means 11.

[0027] The first connection means may be any connection means, but in this embodiment, a USB plug 11 is used as in the first embodiment. The second connection means may be any connection means, but in this embodiment, a USB port 15 is used. By using the USB port 15 as the second connection means, another lighting device provided with a corresponding USB plug 11 can be connected in series (see Figs. 6 and 7). The second connection means is not limited to this embodiment, and a USB plug may be used instead of the USB port 15. In this case, the lighting devices 2 can be connected in series by using the USB port as the first connection means. The second connection means may be a connection means other than a USB plug (for example, an outlet plug), but is preferably a connection means that can be connected to the first connection means.

[0028] As described above, the power supply control unit 16 controls the power supplied from the external power supply 20 via the USB plug 11 to supply power to the USB port 15 and / or the LED board 12. For example, as shown in Figs. 6 and 7, when two lighting devices 2 are connected in series, the power supply control unit 16 distributes and supplies power supplied from the external power supply 20 via the USB plug 11 to the USB port 15 and the LED board 12. The same applies when three or more lighting devices 2 are connected in series. When a lighting device 2 is not connected to another lighting device 2, or when the switch 14 of the connected lighting device 2 is turned off, the power supply control unit 16 supplies power only to the LED board 12.

[0029] When one lighting device 2 of this embodiment is used, the use is the same as in Example 1, so the description will be omitted. By using a plurality of lighting devices 2 of this embodiment and connecting them via a USB hub, it is possible to use more variations than the lighting device 1 of Example 1. For example, by using the lighting device 2 instead of the lighting device 1 shown in Figs. 4(A) to (C) and connecting another lighting device 2 or lighting device 1 in series as shown in Fig. 7, it is possible to obtain sufficient illuminance and sterilization effect. As an example, by using the lighting device 2 instead of the lighting device 1 of Fig. 4(C) and connecting another lighting device 2 or lighting device 1 in series, it is possible to obtain sufficient illuminance and sterilization effect by 16 lighting devices. The use mode of the plurality of lighting devices 2 is not limited to the example shown in Figs. 4(A) to (C), and various types of USB hubs can be used. By using the lighting device 2 of this embodiment, the range of variations is further expanded than that of the lighting device 1 of Example 1, and it can be combined like a puzzle via a USB hub.

[0030] As explained above, the lighting device of the present invention has both lighting and sterilization functions, is simple in structure, easy to carry, and has a high degree of freedom in installation. In addition, since multiple lighting devices can be combined like a puzzle, the illuminance and sterilization effect required by the user can be obtained. Furthermore, by combining it with a normal LED, it can obtain sufficient illuminance while also having a sterilization effect, and can be manufactured at low cost.

[0031] The above-described lighting device is merely an example, and its configuration and method of use can be modified as appropriate without departing from the spirit and scope of the invention. [Explanation of symbols]

[0032] 1. Illumination device of embodiment 1 2. Illumination device of Example 2 10. Chassis 11 First connection method (USB plug) 12 LED board 13 LED (peak wavelength within 405±10nm) 14 Switch 15 Secondary connection method (USB port) 16 Power supply control unit 20 External power supply 30 USB flexible arm (extension cable) 40~43 USB hub 130 Normal LED

Claims

1. An LED substrate including a plurality of LEDs; A first connection means for supplying power to the LED board; A housing that houses the LED board, A lighting device, characterized in that the peak wavelength of light output from at least one of the plurality of LEDs is within 405 nm±10 nm.

2. 2. The lighting device according to claim 1, wherein the first connection means is a USB plug or a USB port.

3. 3. The lighting device according to claim 1, further comprising: a second connection means; and a power supply control unit that controls power supplied from an external power supply via the first connection means to supply power to the second connection means and / or the LED board.

4. 4. The lighting device according to claim 3, wherein one of the first connection means and the second connection means is a USB plug, and the other is a USB port.

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