CN210891289U

CN210891289U - Lighting device

Info

Publication number: CN210891289U
Application number: CN201921815798.XU
Authority: CN
Inventors: 陈永虎; 八田和洋
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-30
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to a lighting device technical field discloses a lighting device that luminous scope, angle can be controlled at will, and lighting device includes: a substrate; at least one lighting unit arranged on the substrate, wherein the at least one lighting unit is arranged in a fan shape by taking the same base point as the center; and the control unit is electrically connected with at least one lighting unit respectively, wherein each lighting unit consists of at least one light-emitting part. The utility model discloses a lighting device is fan-shaped arranging through setting up lighting unit, and lighting and extinguishing of the different lighting unit of the control unit control can realize lighting device in different scope and angle, realizes 0 ~ 360 random control of luminous scope and angle with low costs, satisfies different lighting needs.

Description

Lighting device

Technical Field

The utility model relates to a lighting device technical field, in particular to lighting device that luminous scope, angle can be controlled at will.

Background

With the development and progress of society, the functions of the lighting device have not only been limited to lighting but also partially served as decoration, and thus, higher and higher requirements are placed on the diversification of the form of the lighting device.

Through the deep understanding and excavation of the existing lamp, the inventor finds that the existing lighting device has the following problem that the lighting effect which can be generated by a single lighting device is single, and if the complex lighting effect is to be realized, the whole lighting system is required to be matched, so that the cost is high. And, for some large-scale lamps, the energy consumption is higher after opening.

For example, some large light fixtures are typically mounted in the very center of the ceiling of a room, below which items such as conference tables may be placed coaxially with the light fixtures. In order to maintain the stability of the lighting environment, for example, lighting in a meeting scene or lighting in a home environment is generally not suitable for generating too many dynamic effects in the lighting process, so that the large-scale lamp is generally not suitable for adding too many dimming functions therein, so that the dimming circuit becomes too complex, and the lighting effect generated by the whole lamp is relatively single.

In addition, the current solutions for generating pointing information by using the on/off of the lamp are usually implemented by using the on/off of a directional pattern, and the indicated angle range is a specific one or several.

SUMMERY OF THE UTILITY MODEL

Through research on the existing lighting device, the inventors have generated the following problems: whether possible, in same lamps and lanterns, utilize simple device structure, with the help of the light turn on and go out, release directive property information that instruction range is more various and adjustable.

Particularly, the utility model provides a lighting device, include:

a substrate;

at least one lighting unit arranged on the substrate, wherein the at least one lighting unit is arranged in a fan shape by taking the same base point as the center;

a control unit electrically connected to at least one of the lighting units, wherein,

each of the lighting units is composed of at least one light emitting section.

Because the control unit is electrically connected with at least one lighting unit respectively, can implement the individual light modulation operation including lighting and extinguishing to every lighting unit, cooperation at least one lighting unit's mode of arranging, can light a plurality of lighting units in the specific range as required to have the regional illumination of orientation that has specific central angle with the tendency, and then in same lighting device, utilize simple device structure, with the help of lighting and extinguishing of light, release the directive property information that the instruction range is more various and adjustable.

The utility model discloses in, a plurality of lighting units are fan-shaped and arrange, and lighting units arranges in order, when lighting units is implemented and is lighted or extinguish the action, can use single lighting unit as an action unit, through the lighting or extinguishing of one or more lighting units that constitute by a plurality of illuminating parts, realizes that lighting device's orderly luminous and directive property and regional nature are luminous. In addition, for some lighting devices adopting the technical scheme, such as large-scale lamps, the power consumption can be reduced by only lightening part of the lighting units.

The term "sector" as used herein refers to a pattern defined by two lines or curves intersecting each other, and also includes a part of the pattern. And is not limited to the "sector" defined by textbooks.

Preferably, the plurality of lighting units are uniformly distributed along the circumferential direction of the substrate.

According to the preferred embodiment, the lighting units distributed uniformly, each lighting unit, or every two lighting units can be used as a unit of a lighting angle range, and then a specific number of lighting units are combined, and the covered lighting angle range is conveniently calculated through the product relationship between the number and the lighting angle range.

Preferably, the base plate includes a plurality of fan-shaped blades arranged at predetermined intervals in a circumferential direction around a base point.

According to the preferred embodiment, the base plate is composed of a plurality of fan-shaped blades, the base plate is automatically partitioned, and a lighting unit is accommodated on each fan-shaped blade, so that the position division and the circuit connection of each corresponding fan-shaped blade and the lighting unit are simplified.

Preferably, the lighting device further includes a PCB disposed on the substrate, the plurality of LED patches are disposed on the PCB as a light emitting portion, and the fan-shaped LED strip is configured as a lighting unit.

In addition, as a preference, the lighting device also includes a motor for driving the substrate to rotate, and the motor is electrically connected with the control unit.

According to the preferred embodiment, the substrate of the lighting unit can be driven by the motor to rotate, and when the rotation frequency of the substrate rotating at a high speed is higher than a range recognizable by human eyes, the lighting unit originally formed as a linear light source can form the lighting effect of the surface light source by means of the high-speed rotation. Moreover, in some technical solutions, the lighting effect of the surface light source within a specific angle range can also be obtained by adjusting the time axis of the periodical switching of the on-off of the lighting unit.

Further, preferably, the fan-shaped blade is formed of a light guide plate, and the light emitting unit further includes:

a central luminous body disposed at a position corresponding to the base point;

and the light emitting surface of the side light emitting body corresponds to one side end surface of the light guide plate close to the base point.

According to the preferred embodiment, the light emitted from the central light-emitting body can be uniformly diffused by the light guide plate, so that the light emitted from the lighting device is softer.

Preferably, the light emitting unit further includes:

and the positive luminous bodies are arranged along the edges of the fan-shaped blades in a long strip shape.

Preferably, the light emitting unit further includes:

the light projecting luminous body is arranged at one end of the fan-shaped blade far away from the base point.

According to the preferred embodiment, the light projecting body is provided to expand the illumination range of the illumination unit, and the light projecting body is matched with the central light emitting body and the front light emitting body to enrich the illumination form of the illumination unit.

Preferably, the forward light emitter and/or the light projecting light emitter are connected to the fan-shaped blade in a slot-in manner.

According to this preferred scheme, the slot-in type is connected has easy dismounting's advantage.

Preferably, a lens capable of enlarging an irradiation area of the light-emitting body is further provided on the outer side of the light-emitting body in the radial direction.

According to this preferred embodiment, the lens has an enlarging function, and the light-emitting body can be enlarged in the irradiation area, so that the light can be projected in a wider range of directions and areas by utilizing a relatively narrow space at the edge of the light guide plate.

Preferably, the plane of the light guide plate is inclined at an angle of 60 ° to 80 ° with respect to the rotation axis of the motor.

According to the preferred scheme, the lighting device can be used as a fan lamp through the arrangement mode of the plane of the light guide plate, and the function of air supply is realized while the lighting device rotates at high speed and converts a linear light source into a surface light source.

Drawings

Fig. 1 is an overall schematic view of a lighting device according to a first embodiment of the present invention;

fig. 2 is a front schematic view (fan-shaped schematic one) of a lighting device according to a first embodiment of the present invention;

fig. 3 is a schematic front view (fan-shaped schematic view ii) of a lighting device according to a first embodiment of the present invention;

fig. 4 is a schematic front view (sector view three) of a lighting device according to a first embodiment of the present invention;

fig. 5 is a schematic view showing the lighting device of the first embodiment of the present invention lighting within a range of 70 ° to 110 °;

fig. 6 is a schematic view showing the lighting device of the first embodiment of the present invention lighting in the range of 160 ° to 290 °;

fig. 7 is a schematic front view of a lighting device according to a second embodiment of the present invention;

fig. 8 is a front schematic view (one) of a lighting device according to a third embodiment of the present invention;

fig. 9 is a schematic view showing the lighting device of the third embodiment of the present invention lighting in the range of 90 ° to 150 °;

fig. 10 is a schematic view showing the lighting device of the third embodiment of the present invention lighting in the ranges of 80 ° to 110 ° and 180 ° to 240 °;

FIG. 11 shows a lighting device according to a third embodiment of the present invention

A schematic view of a lamp being lit within a periodic range;

FIG. 12 shows a lighting device according to a third embodiment of the present invention

A schematic view of a lamp being lit within a periodic range;

fig. 13 is a schematic front view (ii) of a lighting device according to a third embodiment of the present invention;

fig. 14 is a schematic front view (iii) of a lighting device according to a third embodiment of the present invention;

fig. 15 is a schematic front view of a lighting device according to a fourth embodiment of the present invention.

Description of reference numerals:

1. a PCB board; 2. a control unit; 3. a substrate; 4. a lighting unit (LED strip); 5. LED surface mounting; 6. a central light emitter; 7. a light guide plate; 7a, a free end; 7b, a first side edge; 7c, a second side edge; 8. a positive light emitter; 9. a motor; 10. a zero signal detection unit; 11. an infrared emitter; 12. an infrared receiver; 13. a light projecting body; 14. a lens; p, a base point; o, zero crossing point; OP, baseline.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The structure and the like of the lighting device are schematically simplified and shown in the drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Implementation mode one

A first embodiment of the present invention provides a lighting device, as shown in fig. 1 and 2, including a substrate 3, at least one lighting unit, and a control unit 2 electrically connected to the lighting unit. Each of the lighting units is composed of at least one light emitting portion, and the at least one lighting unit is disposed on the substrate 3 and arranged in a fan shape with the same base point P as the center. The control unit 2 is used for controlling the lighting and extinguishing of different lighting units, so that the lighting device is controlled to be turned on and extinguished in different ranges and angles, and the control device has the advantages of being simple in control, accurate and rapid in control and the like.

Because the control unit 2 is electrically connected to at least one lighting unit, each lighting unit can be individually dimmed, including on and off, and a plurality of lighting units within a specific range can be turned on as required by matching with the arrangement mode, such as fan-shaped arrangement, of the at least one lighting unit, so that the lighting units are preferentially irradiated toward an area with a specific central angle. In the same lighting device, it is possible to release more various and adjustable directivity information in the indication range by turning on and off the lamp light with a simple device configuration. Moreover, for some lighting devices adopting the technical scheme, such as large-scale lamps, the power consumption can be reduced by only lighting part of the lighting units.

The lighting units in the present embodiment are arranged in a fan shape, and the lighting units in a specific fan shape can be turned on as needed, so that local illumination is performed toward the specific fan-shaped area with a tendency and a directivity. The plurality of lighting units are arranged in a fan shape, the lighting units are arranged in order, when the lighting units are turned on or turned off, a single lighting unit is used as one action unit, and one or more lighting units consisting of the plurality of light emitting parts are turned on or turned off, so that the lighting device can emit light in order and in local directivity.

In brief, the control unit 2 controls the lighting units to be turned on and off, so that the lighting device can realize lighting in different ranges and angles.

In the following, a lighting device in a conference room is taken as an example, and a specific application scene of the lighting device is analyzed.

A conference room in which a conference table and a plurality of seats surrounding the conference table are arranged, a lighting device is installed on a ceiling of the conference room, and a base point P and a zero point O are generated based on seat adjustments of an actual person of the conference table. The base point P, the zero point O and the number of the fan-shaped lighting units are variable according to the number of people and the number of seats. The conference table is assumed to be oval, the centre of which is on the same vertical line as the very centre of the ceiling and the base point P. The seats are uniformly or non-uniformly arranged around the oval conference table, and are sequentially a first seat, a second seat, a third seat, a fourth seat, a fifth seat, a sixth seat, a seventh seat and an eighth seat in a clockwise direction, for example, the position of the first seat is used as a zero point O. When a person sitting in the first seat speaks, the control unit 2 controls the lighting unit located right above the first seat to be turned on, and the lighting units at other positions are turned off to light a speaker sitting in the first seat, so that the attention of people is focused on the speaker. When a speaker raises a question, the person sitting in the third seat and the seventh seat discusses the question, and at this time, the control unit 2 controls the lighting unit located directly above the first seat to be turned off, controls the lighting unit located directly above the third seat and the seventh seat to be turned on, and illuminates the subject sitting in the third seat and the seventh seat, so that the attention of the person is shifted from the speaker to the subject.

Of course, in a specific application scenario of the above-mentioned lighting device, it may be possible to adjust the brightness of the lighting unit, such as to illuminate the speaker or the subject in a highlight manner, and the brightness of the projected colored light is greater, while the brightness of the projected colored light is darker in general illumination of other speakers, so that people focus on the speaker or the subject.

Alternatively, in a specific application scenario of the lighting device, it may be also possible to adjust the lighting device to have different colors, such as projecting white light to the speaker or the forumster and projecting yellowish light to the other non-speakers, so that the attention of people is focused on the speaker or the forumster.

The base plate 3 is formed of a plurality of fan-shaped blades arranged at predetermined intervals in the circumferential direction around a base point P. Alternatively, a plurality of fan-shaped blades may be formed on an entire substrate 3 in a partitioned manner, and a corresponding lighting unit may be accommodated in each fan-shaped blade, thereby simplifying the position division and the circuit connection of each corresponding fan-shaped blade and the lighting unit.

Referring to fig. 2, the lighting device further includes a PCB 1 disposed on the substrate 3, the lighting unit is an LED strip 4 disposed on the PCB 1, the LED strip 4 is fan-shaped, the light-emitting portion is a plurality of LED patches 5 disposed on the LED strip 4, and the PCB 1 is electrically connected to the control unit 2. The control unit 2 controls the lighting and extinguishing of the different LED lamp belts 4, namely the lighting and extinguishing of the lighting device in different ranges and angles can be controlled, the structure of the lighting unit is simple, the LED lamp belts 4 are low in manufacturing cost and easy to obtain, and the lighting device can realize the random control of the lighting range and the angle of 0-360 degrees at low cost. The LED lamp strip 4 is used as the lighting unit, the connection between the LED lamp strip 4 and the PCB board 1 is convenient, the mounting structure and the mounting procedure of the lighting unit and the PCB board 1 are simplified, and the lighting device is produced and processed with low cost and high efficiency.

The control unit 2 can also adjust the overall illumination brightness of the illumination device by controlling the turning on and off of different LED patches 5 on the same illumination unit. Or, different light emitting colors of different LED patches 5 on the same lighting unit are set to be different, or different light emitting colors between different lighting units are set to be different, so that different light colors are obtained by controlling the on and off of different lighting units or the on and off of different LED patches 5 on different lighting units.

Preferably, the plurality of lighting units are uniformly distributed along the circumferential direction of the base plate 3, and may be in a fan shape as shown in fig. 5 and uniformly distributed at intervals along the circumferential direction of the base plate 3, or may be in a fan shape as shown in fig. 7 and uniformly distributed closely along the circumferential direction of the base plate 3, or may even be uniformly distributed with uniform distances from top to bottom and from left to right as the plurality of lighting units. In this embodiment, the LED strips 4 are uniformly distributed in a fan shape along the center of the substrate 3. Evenly distributed's LED lamp area 4 is favorable to the orderly luminescence in control unit 2 control LED lamp area 4 for lighting device's illumination zone and angle are orderly, illuminating effect is excellent. Particularly, the LED strips 4 are uniformly distributed, each LED strip 4 or every two arbitrary LED strips 4 at this time can be used as a unit of a lighting angle range, and then a new lighting unit is combined, and the covered lighting angle range is conveniently calculated through the product relationship between the number and the lighting angle range, and lighting driving is provided according to an application scene.

In the embodiment of the present invention, the shape of the substrate 3 is not particularly limited, and may be an ellipse as shown in fig. 2, a square with a hollow center as shown in fig. 3 or 4, or a circle as shown in fig. 7.

The lighting unit disposed on the substrate 3 may be formed by the LCD strip 4 disposed on the PCB 1, or may be formed by the LED strip 4 directly disposed on the substrate 3, and is not necessarily disposed on the PCB 1.

As described above, the "lighting units" of the present invention are distributed in a fan shape, and the "fan shape" is not limited to the fan shape in the meaning of the textbook, and the "fan shape" of the present invention refers to a figure formed by two straight lines or curved lines crossing each other, and also includes any part of the figure. For example, the LED strip 4 as the illumination unit in the present invention is distributed in a "fan shape", and may be a fan shape with a point P as a base point as shown in fig. 2, or may be a partial shape surrounded by two straight lines intersecting at a point P at a certain angle as shown in fig. 3, or may be a partial shape surrounded by two straight lines intersecting at a point P at a certain angle as shown in fig. 4, without any particular limitation.

Any pattern defined by two straight lines or curved lines intersecting each other at the same point, that is, the base point, and also including a part of the pattern, is within the scope of the "sector" of the present invention, and is not limited to the "sector" defined in the textbook.

The corresponding application scenario shown in fig. 3 or 4 is different from the application scenario shown in fig. 2 in that the application scenario shown in fig. 3 or 4 assumes a square conference table, and the lighting device provided in correspondence with the square conference table is a square hollow lighting device shown in fig. 3 or 4, but may be a square lighting device other than a hollow lighting device. In this case, a base point P and a zero point O may be generated according to the number and positions of persons actually sitting around the square conference table, and the control unit 2 controls the fan-shaped lighting unit located, for example, directly above the speaker seat to be turned on, and the lighting units at other positions to be turned off to illuminate the speaker according to the base point P and the zero point O, so that the attention of people is focused on the speaker. The control unit 2 may control the fan-shaped lighting unit corresponding to the upper part of the seat of the person in discussion to be positioned immediately after the speaker to be lit at a lower brightness than the fan-shaped lighting unit corresponding to the speaker, so as to remind the next conference participant or participants to speak as the person in discussion.

As shown in fig. 3 and 4, the base point P, the zero point O, and the number of the fan-shaped lighting units are all adjusted under the control of the control unit 2 according to the number of people and the actual seating position, and are not constant.

Further, the example is described by taking on/off as an example, and the brightness, the color temperature, or the color of the fan-shaped lighting unit may be adjusted differently, and is not particularly limited. The embodiment of the utility model provides an in, the number in LED lamp area 4 can be between 4 ~ 30, more preferably, between 8 ~ 24, in this embodiment, the number in LED lamp area 4 is 4, and every LED lamp area 4 uses basic point P to be 40 for the central angle at center, sets up a LED lamp area 4 every 90 central angles promptly. The more the number of the LED strips 4 is, the smaller the central angle of each LED strip 4 centered on the base point P is, and the higher the lighting adjustable accuracy of the LED strip 4 is. Each LED strip 4 is used as a unit of a lighting angle, and when one LED strip 4 is lighted, the lighting angle range is 40 degrees, 2 adjacent LED strips 4 are lighted, and the combined lighting angle range is 130 degrees.

In addition, although the present embodiment has been described with an example in which the LED strips 4 are 4 and spaced apart from each other, the present invention is not limited to this, and the technical effects of the present invention can be achieved by using the center of the substrate 3 as a base point and a plurality of LED strips 4 that are uniformly and continuously distributed in a fan shape in the circumferential direction of the substrate 3.

More specifically, referring to fig. 2, before the control unit 2 controls the LED strips 4 to operate, a zero-crossing point O is preset, the control unit 2 uses a connection line between the zero-crossing point O and a base point P as a reference line OP, and the control unit 2 is configured to control lighting and extinguishing of each LED strip 4 according to an angle of each LED strip 4 with respect to the reference line OP. The control unit 2 controls the LED strip 4 within the set included angle range from the reference line OP to be powered on and emit light, so that the lighting device can illuminate within the set range and angle.

For example, as shown in fig. 5, if the lighting device is required to emit light in a range of 70 ° to 110 ° with the clockwise direction as the direction of the calculation angle, the LED strips 4 on 70 ° to 110 ° of the reference line OP are turned on, and the other LED strips 4 are turned off. For another example, as shown in fig. 6, if the lighting device is required to emit light in the range of 160 ° to 290 ° with the clockwise direction as the direction of the calculated angle, the LED strips 4 on the 160 ° to 290 ° of the reference line OP are turned on, and the other LED strips 4 are turned off.

Note that the position of the zero-crossing point O is not fixed, and it can be set and selected by the unit-angle light source cycle lighting. The zero crossing point O of the position can be adjusted, so that strict requirements on the installation angle are not required to be generated when the lamp is installed, and the installation convenience is improved.

In addition, it should be noted that in other embodiments, the substrate 3 or the PCB board 1 may be rotatably disposed, and by rotating the substrate 3 or the PCB board 1, the number and the position of the LED strips 4 may not be limited, the zero-crossing point O may stay at any position, and the arrangement of the LED strips 4 may also be in any range and angle. The rotation of the substrate 3 or the PCB 1 can be realized by a driving motor or any other mechanism capable of driving the substrate 3 or the PCB 1 to rotate, which is not described herein again.

Second embodiment

The second embodiment of the present invention provides a lighting device, which is a further improvement of the first embodiment, and the parts not specifically illustrated include the same reference numerals and text descriptions as the first embodiment, and are not repeated herein.

The main improvement of the second embodiment over the first embodiment is that, in the second embodiment of the present invention, as seen in fig. 7, the substrate 3 is a circular arrangement, the LED strips 4 are closely and evenly distributed on the substrate 3, and correspondingly, the LED patches 5 are closely and evenly distributed on the substrate 3. Compared with the arrangement of the LED lamp strips 4 at intervals in the first embodiment, more lighting modes can be obtained by controlling the on and off of different lighting units in the second embodiment, the lighting range is more selected, and the lighting requirements of more different scenes can be met.

Third embodiment

The third embodiment of the present invention provides a lighting device, which is a further improvement of the second embodiment, and the parts not specifically illustrated include the reference numerals and the description of the characters, which are the same as the second embodiment, and are not repeated herein.

The third embodiment is mainly improved from the second embodiment in that, in the third embodiment of the present invention, as seen in fig. 8, the fan-shaped blade is composed of a light guide plate 7, the light emitting part includes a central light emitting body 6 and a side light emitting body (not shown), one end of the light guide plate 7 is connected to the central light emitting body 6, and the other end extends radially outward. The side light emitter (not shown) is disposed on a side of the light guide plate 7 close to the central light emitter 6, and cooperates with the light guide plate 7, and projects light toward the light guide plate 7, passes through the light guide plate 7, changes direction, and projects light from a side surface of the light guide plate 7. By utilizing the light guide plate 7, the light emitted by the side luminous body can be uniformly diffused, so that the light emitted by the lighting device is softer, and the lighting device has the advantages of high luminous efficiency and low power consumption.

The central luminous body 6 is circularly arranged at the central position of the lighting device, the geometric center of the central luminous body 6 passes through the base point P, the light guide plates 7 are multiple, and the light guide plates 7 are uniformly distributed at the outer side of the central luminous body 6. The light guide plate 7 includes a connection end (not shown) connected to the central illuminant 6, a free end 7a far away from the central illuminant 6, and a first side 7b and a second side 7c respectively connecting the connection end and the free end 7 a. The light emitting portion further includes positive light emitters 8 disposed on the light guide plate 7 in a one-to-one correspondence, and the positive light emitters 8 are disposed in an elongated shape on an edge of each fan-shaped blade-shaped light guide plate 7, as disposed on the first side 7b in the drawing. The positive luminous body 8 is used as a single luminous body and is matched with the light guide plate 7 for illumination, so that more various illumination effects can be demonstrated.

The number of the light guide plates 7 is 1 to 10, preferably 3 to 6, and in the third embodiment, the number of the light guide plates 7 is 3, and the number of the positive luminescent bodies 8 is also 3 correspondingly.

Specifically, as shown in fig. 8, the lighting device further includes a motor 9 for driving the plurality of light guide plates 7 to rotate, and the motor 9 is electrically connected to the control unit 2. The light guide plate 7 can rotate under the drive of the motor 9, so that the light emitting part is driven to rotate, the positions of the positive light emitting body 8 and the side light emitting body are changed, the light emitting range and the angle of the lighting unit which is on are changed, and the light emitting range and the angle can be changed randomly within the range of 0-360 degrees.

Specifically, as described above, the zero crossing point O is set in advance, and the clockwise direction is taken as the direction of the calculation angle, and as shown in fig. 9, the illumination device is required to emit light in the range of 90 ° to 150 °, and the light guide plate 7 is turned on when the positive light emitter 8 passes through the range of 90 ° to 150 ° from the reference line OP in the process of rotation, and is turned off in other angle ranges. For example, as shown in fig. 10, if the lighting device needs to emit light in the ranges of 80 ° to 110 ° and 180 ° to 240 ° with the clockwise direction as the direction of the calculated angle, the light guide plate 7 is turned on when the positive light emitter 8 passes through the ranges of 80 ° to 110 ° and 180 ° to 240 ° with respect to the reference line OP, and is turned off when the light guide plate rotates in other angle ranges. When the light guide plate 7 rotates rapidly and reaches a certain rotation frequency, the positive luminous body 8 which emits light only through a specific range forms a fan-shaped light source which exists stably in the range. Through the mode, the lighting device in the embodiment can realize accurate regulation and control of the light emitting range and the angle by matching with a high-speed rotating mechanism and a dimming system through light bands with relatively small quantity. Moreover, in some technical solutions, the lighting effect of the surface light source within a specific angle range can also be obtained by adjusting the time axis of the periodical switching of the on-off of the lighting unit.

The function of the temporal change according to which the control unit 2 controls the turning on and off of the positive luminous body 8 can be obtained by calculation from the rotation period of the light guide plate 7. Referring to fig. 11, when the rotation period of the light guide plate 7 driven by the motor 9 is T and the lighting device is required to emit light within a range of 90 ° to 150 °, the positive light emitter 8 on each light guide plate 7 is controlled to move to the reference line OP

And the lamp is turned on within the period range, and is turned off within other time ranges. As another example, referring to FIG. 12, it is desirable that the lighting device be at 60 °Light is emitted within the range of 90 DEG to 150 DEG to 240 DEG, and the positive luminous body 8 on each light guide plate 7 is controlled to move to the reference line OP

And the lamp is turned on within the period range, and is turned off within other time ranges.

Referring to fig. 13, the period T can be determined by the zero-crossing signal detection unit 10. The zero crossing point signal detection unit 10 comprises an infrared transmitter 11 and an infrared receiver 12 which are used in a matched mode, the infrared transmitter 11 is arranged on the lighting device through a reference line OP, the infrared receiver 12 is arranged on each light guide plate 7, and the light guide plates 7 rotate and sequentially pass through the infrared transmitter 11. When the signal reception on each light guide plate 7 is blocked, a high pulse is generated and then the L level is pulled, thereby determining one period T. The periods T corresponding to different rotating speeds are different, and then the time T range corresponding to the period T can be calculated according to the scene or the angle of illumination required by the user. The infrared receiver 12 may be disposed on the positive light emitting body 8 so as to use the signal of the infrared receiver 12 as a period starting point when being blocked, and the infrared receiver 12 may also be disposed on the light guide plate 7 at a position away from the positive light emitting body 8 so as to calculate the period starting point according to the rotation speed and the angle formed by the infrared receiver 12 and the positive light emitting body 8 and the base point P.

When angle control is carried out, power output can be adjusted by adjusting PWM, so that the brightness of a light-emitting range can be adjusted.

As described above, referring to fig. 8, the end of the light guide plate 7 away from the central light emitter 6 is a free end 7a, and the light emitting unit further includes a light emitter 13 provided at the free end 7a of the light guide plate 7. Through setting up light projector 13, can enlarge lighting unit's illumination zone, light projector 13 cooperates with central luminous body 6, positive luminous body 8, can enrich lighting unit's illumination form.

In particular, the positive light emitter 8 and the light projecting light emitter 13 may be formed by a plurality of LED beads arranged on the first side 7b and the free end 7a of the light guide plate 7.

Preferably, the positive illuminant 8 and/or the light projector 13 is slot-in connected to the fan-shaped blade, i.e. the light guide plate 7. For example, a slot (not shown) is provided on the light guide plate 7, and the positive light emitter 8 and/or the light projecting light emitter 13 are inserted into the slot. The slot type connection has the advantage of convenient disassembly and assembly, is convenient for the disassembly and assembly of the positive luminous body 8 and/or the light projecting luminous body 13, is also convenient for subsequent replacement and maintenance, and has simple structure and convenient production and processing.

As shown in fig. 14, a lens 14 is further provided on the outer side of the light emitter 13 in the radial direction, and the lens 14 has a magnifying function to enlarge the irradiation area of the light emitter 13, thereby projecting light in a wider range of directions and areas by using a relatively narrow space at the end edge of the light guide plate 7.

Embodiment IV

The fourth embodiment of the present invention provides a lighting device, which is a further improvement of the third embodiment, wherein the parts not specifically illustrated include the same reference numerals and characters as the third embodiment, and are not repeated herein.

The main improvement of the fourth embodiment over the third embodiment is that, in the fourth embodiment of the present invention, as seen in fig. 15, the lighting device may be in the form of a fan lamp, the plane of the light guide plate 7 is not perpendicular to the rotation axis of the motor 9, but is disposed obliquely at an angle ranging from 60 ° to 80 °, and the light guide plate 7 is in the shape of a fan blade as a whole. The lighting device can be used as a fan lamp, rotates at a high speed, converts a linear light source into a surface light source, and simultaneously achieves the air supply function, and has two functions of lighting in a specific range and air supply.

It will be appreciated by those of ordinary skill in the art that in the embodiments described above, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the invention.

Claims

1. An illumination device, comprising:

a substrate;

a control unit electrically connected to at least one of the lighting units, respectively,

each of the lighting units is composed of at least one light emitting section.

2. The lighting device according to claim 1, wherein a plurality of the lighting units are uniformly distributed along a circumferential direction of the substrate.

3. The lighting device according to claim 1 or 2, wherein the base plate is constituted by a plurality of fan-shaped blades which are provided at predetermined intervals in a circumferential direction with the base point as a center.

4. The lighting device according to claim 1 or 2, further comprising a PCB board provided on the substrate, wherein a plurality of LED patches are provided as the light emitting portion on the PCB board, and a fan-shaped LED strip is configured as the lighting unit.

5. The lighting device as defined in claim 3, further comprising a motor for driving the substrate to rotate, wherein the motor is electrically connected to the control unit.

6. The lighting device according to claim 3, wherein the fan-shaped blade is constituted by a light guide plate, and the light emitting portion further comprises:

a central luminous body disposed at a position corresponding to the base point;

and the light emitting surface of the side face luminous body corresponds to one side end face of the light guide plate close to the base point.

7. The illumination device according to claim 6, wherein the light emitting portion further comprises:

8. The illumination device according to claim 7, wherein the light emitting portion further comprises:

and the light projecting luminous bodies are arranged at one ends of the fan-shaped blades far away from the base point.

9. A lighting device as recited in claim 8, wherein said forward light emitter and/or said light projector are in slotted connection with said fan blades.

10. A lighting device as recited in claim 8 or 9, wherein a lens capable of enlarging an irradiation area of said light projecting body is further provided on a radially outer side of said light projecting body.

11. A lighting device as claimed in claim 5, wherein the plane of said fan-shaped blades is inclined at an angle of 60 ° to 80 ° to the axis of rotation of said motor.