A sensor-controlled light-emitting device

Abstract

The present invention discloses a sensor-controlled light-emitting device, which includes a lamp housing, a light-emitting unit, a light-emitting surface device, a light-emitting surface, a high-frequency radar sensor, a control device, etc. The light-emitting unit is built into the lamp housing; the light-emitting unit forms the light-emitting area; the light-emitting surface device is used to receive the light emitted by the light-emitting area and emit it through the light-emitting surface; the light-emitting surface is designed so that the light-emitting unit can form a uniform brightness distribution when it is turned on; the high-frequency radar sensor is used to form a detection area outside the lamp housing, and the detection area is used to detect the movement or existence of the detection object in the area, and transmit it to the control device in the form of a signal, and the control device is used to control the switch of the light-emitting unit.

Description

Technical Field

[0001] The present invention relates to the field of lighting, and in particular to a sensor-controlled light-emitting device. Background Art

[0002] At present, light-emitting devices controlled by sensors have been widely used in various fields. Such light-emitting devices usually include a housing, a light-emitting unit, a shielding member, a sensor, a controller, etc. In common lighting devices, the light-emitting unit is installed in a lighting housing, and the housing has a protective effect on the light-emitting unit. The shielding member is often designed to be translucent and is used to receive the light emitted by the light-emitting unit. On the one hand, it realizes the light received by the transmission of light in the shielding member, and on the other hand, it prevents the light in the shielding member from overflowing. The sensor is used to form a detection area to recognize the movement of the detection object in the specified area, and transmits it to the control unit in the form of a signal. Through the control unit's control of the light-emitting unit, the light-emitting unit is finally turned on when an object is detected and turned off when there is no object.

[0003] However, the inventors of this application found that the above technology has at least the following technical problems in the process of implementing the technical solution of the invention in the embodiment of this application:

[0004] 1. Currently, most lighting devices on the market integrate the light-emitting unit and the sensor in the same light-emitting device. Although the sensing effect is achieved, the uniformity of the light is greatly reduced.

[0005] Specifically, when the light-emitting unit is working, that is, when the lighting device emits light, since the sensor is installed on one side of the light-emitting unit and is not translucent, the light on the side of the sensor adjacent to the light-emitting unit will be blocked by the sensor, thereby forming a shadow. Therefore, the installation method of installing the sensor adjacent to the light-emitting unit will make it impossible for the lighting device to form a uniformly distributed light. What's worse, the shadow caused by the sensor depends on the relative position of the sensor and the light-emitting unit, so the shadow part cannot be solved by light compensation. On the other hand, since one side of the sensor will be illuminated by the light-emitting unit when the light-emitting unit is in operation, this will affect the sensor's detection of objects in the detection area.

[0006] 2. The unreasonable design of the light-emitting surface affects the uniformity of light of the lighting device.

[0007] 3. In order to avoid the influence of the shadow produced by the sensor on the uniformity of lighting, the sensor is placed outside the lamp housing, which greatly reduces the aesthetics of the lighting device. Summary of the invention

[0008] The embodiment of the present application solves the problem in the prior art that the illumination uniformity of the light-emitting device is affected by unreasonable design of the sensor and the light-emitting surface by providing a sensor-controlled light-emitting device, thereby greatly improving the illumination uniformity of the lighting device without affecting the aesthetics of the lighting device.

[0009] The embodiment of the present application provides a sensor-controlled light-emitting device, including: a lamp housing, a light-emitting unit, a light-emitting surface device, a light-emitting surface, a light-reflecting device, a high-frequency radar sensor, a light-emitting area, and a control device. The light-emitting unit is placed inside the lamp housing, and the lamp housing is used to protect the light-emitting unit; the light emitted by the light-emitting unit when it is turned on forms a light-emitting area, and the light-emitting surface device absorbs the light in the light-emitting area; the light-reflecting device is installed on the upper part of the light-emitting surface device and the upper part of both sides, and the light-reflecting device is used to reflect the light in the light-emitting surface device into the light-emitting surface, and prevent the light in the light-emitting surface device from overflowing, so as to avoid the light from irradiating the sensor to form a shadow. The light is transmitted from the light-emitting surface to the outside to achieve the lighting effect. The sensor device is located on the upper part of the lamp housing, and the sensor adopts a high-frequency radar sensor, which is used to form a detection area outside the lamp housing, and the detection area can sense the movement or existence of objects in the area, and transmit it to the control device in the form of a signal. The control device is installed on the upper part of the high-frequency radar sensor, which is used to receive the signal of the high-frequency radar sensor, and control the light-emitting unit according to the received signal, so as to realize that when there is an object or an object moves in the detection area, the light-emitting unit is turned on for lighting, and when there is no object or no object moves, the light-emitting unit is turned off.

[0010] Specifically, the light-emitting unit is composed of 20 to 40 light-emitting diodes uniformly arranged in a chain inside the light-emitting unit.

[0011] Furthermore, the housing, especially the portion for accommodating the light-emitting unit, is made of metal, preferably aluminum.

[0012] Furthermore, the light emitting area device is a light scattering device for scattering light on the light emitting surface device to make the illumination more uniform.

[0013] Furthermore, the light-emitting unit also includes a device for light compensation, which is used to identify the brightness of the ambient light and determine whether the light-emitting unit needs to be turned on according to the brightness of the ambient light. Specifically, if the ambient light is sufficient, the light-emitting unit will not be turned on even if the detection area exists or an object moves.

[0014] Furthermore, the light emitting surface has a pattern composed of optically effective interference sites, so that the light emitted by the light emitting surface is more uniform, achieving the purpose of uniform brightness illumination. The optically effective interference sites can be arranged on the light emitting surface by printing, gluing, etching, engraving, sandblasting, etc.

[0015] Specifically, the light emitting surface is made of polycarbonate, polymethyl methacrylate or glass, has a thickness between 3 mm and 7 mm, preferably between 4 mm and 6 mm, and is plate-shaped to achieve a better light emitting effect.

[0016] Furthermore, the area covered by the optically effective sites of the light emitting surface increases as the distance between the light emitting surface and the light emitting unit increases, so that the lighting device has stronger adaptability.

[0017] Furthermore, the high-frequency radar sensor is preferably designed as a Doppler radar sensor, which detects a frequency difference between an emission spectrum and a reception spectrum caused by the movement of an object, and the frequency difference is emitted or received by the high-frequency radar sensor and recorded and evaluated.

[0018] Furthermore, the light emitting surface and the light reflecting device are made of materials that can be penetrated by microwaves emitted by the sensor, so that the light emitting surface, the light reflecting device and other devices below the sensor will not affect the operation of the sensor, thereby improving the reliability of the light emitting device controlled by the sensor.

[0019] Furthermore, the sensor-controlled lighting device should also have a wireless remote control device for user control, which is used to wirelessly transmit parameterized configurations to adjacent lighting devices and wirelessly control the sensor-controlled lighting device by the user. The wireless remote control device greatly simplifies the installation of the sensor-controlled lighting device and the use of the user.

[0020] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0021] 1. Since 20 to 40 light emitting diodes are evenly arranged in a chain manner in the light emitting unit to form the light emitting unit, the problem of uneven light generated by the light emitting unit is effectively solved, thereby achieving uniform illumination of the light emitting unit.

[0022] 2. Since metal is used as the outer shell of the light-emitting unit, and aluminum is preferred, the heat dissipation problem of the light-emitting unit in the prior art is effectively solved, thereby optimizing the heat dissipation effect of the light-emitting unit.

[0023] 3. The light-emitting area device is a light scattering device, which effectively solves the uneven illumination of the light-emitting area device and achieves uniform illumination of the light-emitting area.

[0024] 4. Since the light compensation device is also used in the light unit, the light adjustment problem of the light emitting device is effectively solved, and then it is realized that whether the light emitting unit needs to be turned on is judged according to the brightness of the ambient light. Specifically, if the ambient light is sufficient, the light emitting unit will not be turned on even if the detection area exists or an object moves.

[0025] 5. Since a pattern of optically effective interference sites is arranged on the light emitting surface, and the area covered by the optically effective sites increases with the increase of the distance between the light emitting surface and the light emitting unit, the problem of uneven illumination on the light emitting surface is effectively solved, thereby enabling the light emitting surface to produce more uniform illumination.

[0026] 6. Since the light emitting surface and the light reflecting device are made of materials that can be penetrated by the microwaves emitted by the sensor, the problem of the signal generated by the sensor being blocked by the light reflecting device is effectively solved, so that the light emitting surface, light reflecting device and other devices below the sensor will not affect the operation of the sensor, thereby improving the reliability of the light-emitting device controlled by the sensor.

[0027] 7. Due to the use of wireless remote control equipment, the cumbersome installation problem of a large number of light-emitting devices is effectively solved, thereby simplifying the installation process of the light-emitting devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic exploded view of a sensor-controlled lighting device of the present invention;

[0029] Figure 2 A light emitting surface of a sensor-controlled light emitting device according to the present invention; DETAILED DESCRIPTION

[0030] The embodiments of the present application solve the problems in the prior art of uneven lighting, unreasonable light-emitting surface design, and impact of sensor installation position on the aesthetics of the light-emitting device controlled by the sensor by providing a sensor-controlled light-emitting device, thereby making the light generated by the sensor-controlled light-emitting device more uniform without affecting the aesthetics of the light-emitting device.

[0031] The technical solution in the embodiment of the present application is to solve the problem of uneven lighting of the light-emitting device controlled by the above sensor. The overall idea is as follows:

[0032] By placing the light-emitting units on both sides of the light-emitting surface device, placing the sensor and the control device on the upper part of the lamp housing, and installing a light reflection device on the upper part of the light-emitting surface device, the light absorbed by the light-emitting surface device will not overflow, thereby irradiating the sensor to cause uneven illumination and affect the sensitivity of the sensor. In order to further improve the uniformity of illumination, the light-emitting surface is also specially processed, and the light-emitting surface is covered with an optically effective pattern, so that the light emitted by the light-emitting surface is more uniform.

[0033] Through the above two improvements, the illumination of the light-emitting device is made more uniform without changing the built-in sensor, and the user experience is further improved without affecting the aesthetics of the light-emitting device.

[0034] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Embodiment 1

[0036] According to an embodiment of the present invention, the light-emitting surface device is designed as a light scattering device, so that light is diffusely radiated from the light exit surface into the light-emitting surface device.

[0037] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0038] The light scattering device enables the light of the lighting device to be more evenly distributed on the exit surface, and at the same time, the high-frequency radar sensor can be better prevented from affecting the aesthetics of the lighting device when the light-emitting unit is in an activated working state.

[0039] Embodiment 2

[0040] According to one embodiment of the present invention, the light exit surface has an optically effective pattern, and the pattern is preferably formed by halftone dots that are at the same distance from each other and have a variable dot size or a variable area. The shape of the halftone dots is also called amplitude modulation halftone, and the pattern is produced on the light exit surface by printing, bonding, painting, etching, engraving, sandblasting or any combination thereof. Further, the coverage of the optically effective pattern is variable, and the coverage of the preferred optically effective pattern increases with the increase of the distance between the light exit surface and the light emitting unit, and its change is stable and continuous. The area coverage of a specific area cross section of a predetermined size as a reference area on the light exit area represents the ratio of the area cross section of the reference area covered by the optically active pattern element to the total size of the reference area; the distance to the light emitting unit refers to the shortest distance from the reference surface to the light emitting unit. If the light emitting unit extends along a straight line, the distance is measured as a distance perpendicular to the light emitting unit, which passes through a predetermined point on the reference surface.

[0041] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0042] This pattern can cause scattering of light transmitted in the light-emitting surface device and emission of the light from the light-emitting surface, so that the light distribution at the light-emitting surface is more uniform, greatly improving the illumination uniformity of the light-emitting device.

[0043] Embodiment 3

[0044] According to one embodiment of the present invention, a color layer device having a uniform color development with the same color as the light emitting surface device is installed on the surface behind the light emitting surface. The color layer device is impermeable to light, that is, light cannot pass through the color layer device, but the microwaves generated by the high-frequency radar sensor are permeable, that is, the microwaves generated by the high-frequency radar sensor can pass through the color layer device and will not be affected by the color layer device. The colors and patterns in the color layer device are both optically effective patterns, and the color is preferably white. The concept of uniform color development indicates that the naked eye cannot perceive the color difference in the color layer arrangement.

[0045] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0046] This color layer device does not affect the operation of the sensor. On the one hand, when the light-emitting unit is turned on, the color layer device can make the light more uniform; on the other hand, when the light-emitting unit is turned off, the color layer device can cover the high-frequency radar sensor, making the observer unable to see the sensor, thereby improving the aesthetics of the light-emitting device controlled by the sensor.

[0047] Embodiment 4

[0048] According to one embodiment of the present invention, a reflective device is applied on the surface of the light-emitting area device on the rear side of the light-emitting surface of the light-emitting area device and preferably on the edge area of ​​the lighting device that is at least not arranged adjacent to the light-emitting device, so that the light received and transmitted in the light-emitting area device will not be emitted from these areas of the light-emitting area device. At the same time, the reflective device can transmit the microwaves generated by the high-frequency radar sensor. The reflective layer is preferably designed as a film and applied to the light-emitting surface device. In addition to the light-emitting surface, all other surfaces of the light-emitting surface device are preferably provided with a reflective device or surrounded by a reflective device. Preferably, the reflective device can be designed as a semi-transparent film or a film with a through hole, which is used to couple the light emitted by the light-emitting unit into the edge side surface of the light-emitting surface device. It is particularly preferred that the above-mentioned color layer device and the reflective device are applied in combination on the light surface unit and formed into a single white film. One or more through holes are provided in the white film, provided that the viewer cannot identify the through hole compared with the rest of the color layer arrangement or the reflective arrangement when observing the light-emitting device with the naked eye from a minimum distance of 0.5 meters.

[0049] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0050] The reflective device arranged on the light surface device can, on the one hand, block unnecessary light and reduce the power of the light-emitting unit, thereby improving the efficiency of the lighting device; on the other hand, it can prevent light from shining on the sensor to create a shadow and affect the operation of the sensor. The combination of the color layer device and the reflective device can further improve the uniformity of the lighting device. Furthermore, through one or more holes on the white film, it is possible to detect the ambient brightness with the help of a photodetector, detect the signal from the wireless remote control with the help of an infrared resistor, and display the operating status of the lighting device via an activatable light-emitting diode, etc., further improving the intelligence of the lighting device and improving the user experience.

[0051] Embodiment 5

[0052] In an embodiment of the present invention, the lampshade, in particular the portion of the lampshade for accommodating the light-emitting unit, is made of metal, and preferably aluminum.

[0053] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0054] The lampshade and the part accommodating the light-emitting unit are made of aluminum, so that the lighting device can dissipate heat well in the working state, thereby extending the life of the light-emitting unit, the sensor of the light-emitting device and the control device.

[0055] Embodiment 6

[0056] According to one embodiment of the present invention, the light-emitting unit is formed by a lighting device, which is arranged along at least one edge side surface of the lighting surface device. The lighting device is preferably composed of light-emitting diodes arranged in a chain-like manner on an LED circuit board. Preferably, 20 to 40 light-emitting diodes are arranged on each edge side of the light-emitting surface device, and the power thereof is 20 to 100 mW, preferably a light-emitting diode with a power of 30 mW. It is particularly preferred to arrange the illuminant on two mutually opposite edge surfaces of the light-emitting surface device.

[0057] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0058] This installation method can, on the one hand, make the brightness on the light-emitting surface more uniform, and on the other hand, take into account both the heat dissipation of the lighting device and the manufacturing cost of the light-emitting unit.

[0059] Embodiment 7

[0060] In one embodiment of the present invention, the light-emitting surface device is made of polycarbonate, polymethyl methacrylate (also known as organic glass or acrylic) or glass, and the material thickness is in the range of three to seven millimeters, preferably four to six millimeters. The light-emitting surface device preferably adopts a plate-like structure with uniform thickness, that is, it is flat or leaf-shaped.

[0061] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0062] The luminous surface device can couple the light emitted by the luminous unit into the luminous area device particularly well, so that the light is transmitted and scattered very well in the luminous area device, and the brightness distribution of the light emitting area is uniform.

[0063] Embodiment 8

[0064] According to an embodiment of the invention, the lighting device further comprises means for activating the light-emitting units according to the ambient brightness of the lighting device, wherein these means are particularly equipped with compensation means for compensating the ambient brightness component generated by the activated light-emitting units. The activation of the light-emitting units of the lighting device can be controlled according to the ambient brightness, so a photoresistor or a photodetector is also used.

[0065] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0066] The photoresistor or light detector is used to detect the ambient brightness and transmit the data to the control device. The control device determines whether it is necessary to adjust the brightness of the lighting device according to the judgment of the ambient brightness to achieve constant brightness lighting.

[0067] Embodiment 9

[0068] According to an embodiment of the present invention, the lighting device is designed to be used for a wirelessly connected remote control device to parameterize the configuration for configuration and control of the lighting device, preferably wirelessly transmitting at least one operating parameter of the lighting device to an adjacent lighting device of the present invention.

[0069] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0070] Wireless control of the lighting device can be achieved through this wirelessly connected remote control device, thereby simplifying the installation process of the lighting equipment. When multiple such lighting devices are used in a large area, data can be transmitted between such lighting devices, so only one device needs to be set up, further simplifying the installation of the lighting device.

[0071] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0072] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sensor-controlled light-emitting device, characterized in that: include: Lamp housing (1), light-emitting unit (4), light-emitting area (7), light-emitting surface device (5), sensor (2), detection area (8), control device (3), light-emitting surface (6), and light reflection device (9); The light-emitting unit (4) is built into the lamp housing (1); when the light-emitting unit (4) is turned on, the light-emitting area (7) is formed; the light-emitting area (7) is used to collect light generated by the light-emitting unit (4); The light-emitting unit (4) is composed of 20 to 40 light-emitting diodes uniformly arranged in a chain-like manner inside the light-emitting unit (4); the light-emitting surface device (5) is used to absorb the light generated by the light-emitting area (7) and emit the light to the outside through the light-emitting surface (6) to achieve lighting; The light emitting surface (6) can form light with uniform brightness distribution when the light emitting unit (4) is turned on. The light emitting surface (6) has a pattern composed of optically effective interference sites, so that the light emitted by the light emitting surface (6) is more uniform. The optically effective interference sites can be arranged on the light emitting surface by printing, gluing, etching, engraving, or sandblasting. The range covered by the optically effective interference sites of the pattern is variable, and the area covered by the optically effective interference sites increases as the distance between the light emitting surface and the light emitting unit increases. The sensor (2) is a high-frequency radar sensor; the sensor is used to form the detection area (8); the detection area (8) is used to sense the movement or existence of the detection object in the area and transmit the signal to the control device (3), and the control device (3) controls the state of the light-emitting unit (4); A color layer device having the same uniform color as the light-emitting surface device (5) is installed on the surface on the rear side of the light-emitting surface (6), and a light reflecting device (9) is used on the upper side and the upper parts of the left and right sides of the light-emitting surface device (5), so that the light in the light-emitting surface device (5) will not be emitted outward, and the light reflecting device (9) will not affect the transmission of microwaves generated by the high-frequency radar sensor. The light-emitting device controlled by the sensor solves the problem of shadows formed by the sensor installed next to the light-emitting unit (4), so that the light uniformity of the light-emitting device controlled by the sensor is improved; The sensor is installed inside the lamp housing, which does not affect the aesthetics of the lighting device; The reflective device is designed as a semi-transparent film or a film with a through hole, the through hole is used to couple the light emitted by the light-emitting unit into the edge side surface of the light-emitting surface device (5), the color layer device and the reflective device are applied on the light surface unit in combination and form a single white film, the white film is provided with one or more through holes, the one or more through holes on the white film can realize the detection of ambient brightness by means of a photodetector, the detection of a signal from a wireless remote control by means of an infrared resistor, and the display of the operating status of the lighting device via an activatable light-emitting diode, and the device provides light compensation for the light-emitting unit (4) according to changes in ambient brightness.

2. A sensor-controlled light-emitting device as claimed in claim 1, characterized in that: The light-emitting area (7) is adopted as a light scattering device, which is used to scatter light on the light-emitting surface device (5).

3. A sensor-controlled light-emitting device as claimed in claim 1, characterized in that: The light emitting surface (6) is made of polycarbonate, polymethyl methacrylate or glass, has a thickness between 3 mm and 7 mm, and is in a plate shape.

4. A sensor-controlled light-emitting device as claimed in claim 1, characterized in that: The part of the lamp housing (1) used for accommodating the light-emitting unit is made of metal.

5. A sensor-controlled light-emitting device as claimed in claim 1, characterized in that: The light-emitting unit (4) also includes a device for activating the light-emitting unit (4) according to the ambient brightness of the light-emitting device; the light-emitting device also has a wireless remote control device for user control, and the wireless remote control device is used to wirelessly transmit the parameterized configuration to adjacent light-emitting devices and the user to wirelessly control the sensor-controlled light-emitting device.

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