TW201809832A - Monitor assistant illumination apparatus - Google Patents

Abstract

A monitor assistant illumination apparatus includes a lamp frame, a first light source, a second light source, a switch, a first light sensor and a second light sensor. The lamp frame has a support shaft and a lamp cover disposed on the support shaft. The first light source is disposed on a first surface of the lamp cover for emitting light in a first exit direction. The second light source is disposed on a second surface of the lamp cover for emitting light in a second exit direction different from the first exit direction. The switch is disposed on the lamp frame for switching between the first and second light sources. The first light sensor is disposed on the lamp cover for detecting a luminance value of a background light emitted from the rear of the monitor. The second light sensor is disposed on the lamp cover for detecting an illuminance value of ambient light source. When the luminance value of the background light from the rear of the monitor is less than a first setting value, the first light source is turned on; when the illuminance value of an ambient light source is less than a second setting value, the second light source is turned on.

Description

Screen-assisted lighting

This invention relates to a lighting device, and more particularly to a screen assisted lighting device.

In recent years, Internet information has exploded, and the channel for obtaining information has been largely replaced by electronic media. The frequency of consumer use of screens has increased from TVs and computer monitors to tablet computers and mobile phones. The screen can't be separated.

However, an excessively dark background environment can cause the brightness of the screen to be too bright, resulting in strong contrast glare, or indirect glare that causes discomfort through the screen when the ambient light source is too bright, which will accelerate eye fatigue. Therefore, it is necessary to improve the brightness of the light source and the illumination position in the background environment to reduce the incidence of contrast glare and indirect glare.

The invention relates to a screen-assisted illumination device for detecting the brightness value of a background light source behind the screen to provide a suitable background light.

The invention relates to a screen auxiliary lighting device for detecting The illuminance value of the ambient light source around the screen to provide the appropriate lighting.

According to an aspect of the present invention, a screen-assisted illumination device includes a light stand, a first light source, a second light source, a switch, a first light sensor, and a second light sensor. . The lamp holder includes a support shaft and a lamp cover disposed on the support shaft. The first light source is disposed on the first surface of the lamp cover and emits light in a first light emitting direction. The second light source is disposed on the second surface of the lamp cover and emits light in a second light emitting direction. The first light exiting direction is different from the second light exiting direction. The switch is disposed on the light frame for switching the first light source and the second light source. The first photo sensor is disposed on the lamp cover to detect the brightness value of a background light source behind the screen. The second photo sensor is disposed on the lamp cover to detect the illuminance value of the ambient light source. When the brightness value of the background light source behind the screen is less than a first set value, the first light source is activated; when the light source value of the ambient light source is less than a second set value, the second light source is activated.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

100‧‧‧Screen-assisted lighting

110‧‧‧Light stand

112‧‧‧Support shaft

114‧‧‧ bushings

115‧‧‧ first partition

116‧‧‧Extension arm

117‧‧‧Second partition

115a, 117a‧‧‧ surface

118‧‧‧shade

120‧‧‧First light source

122‧‧‧second source of illumination

130‧‧‧Switcher

131‧‧‧First conductive sheet

133‧‧‧Second conductive sheet

132, 134‧‧‧ Limit notches

135‧‧‧Steering joint

136‧‧‧Metal sphere

137‧‧‧Flexible parts

140‧‧‧First light sensor

142‧‧‧Second light sensor

144‧‧‧Brightness controller

150‧‧‧ display

152‧‧‧ screen

S1‧‧‧ first surface

S2‧‧‧ second surface

X‧‧‧The first light direction

Y‧‧‧second light direction

A1‧‧‧ first side

A2‧‧‧ second side

C‧‧‧ accommodating slots

D‧‧‧Desktop

W‧‧‧Background

In‧‧‧Inside

Out‧‧‧ output

1A and 1B are respectively a perspective view of a screen-assisted illumination device and a cross-sectional view of a lampshade portion thereof according to an embodiment of the invention.

2A and 2B are respectively schematic diagrams showing operation of the screen-assisted illumination device in different usage modes according to an embodiment of the invention.

3A and 3B are respectively schematic diagrams showing a mode switching mode of a screen-assisted illumination device according to an embodiment of the invention.

4A is a diagram showing the power of a screen-assisted illumination device according to an embodiment of the invention. Road block diagram.

4B is a circuit block diagram of a screen-assisted illumination device in accordance with an embodiment of the present invention.

In one embodiment of the invention, a screen assisted illumination device is proposed that is improved for the lighting environment in which the screen is in use. In general, proper use of the screen includes sitting, screen settings, and lighting conditions, where the brightness of the lighting environment is often neglected and causes eye fatigue. It is recommended that the brightness of the background light source be moderate when using the screen. The brightness of the background material (such as the wall) is about one-third of the brightness of the screen to reduce the contrast glare or indirect glare.

In order to detect the background brightness, the screen auxiliary illumination device of the present invention is provided with a first light sensor on the lamp cover for detecting the brightness value of a background light source behind the screen, and adjusting the brightness according to the brightness value of the background light source. Background lighting to reduce contrast glare. In addition, in order to detect the ambient light source, the screen auxiliary illumination device of the present invention additionally provides a second light sensor on the lamp cover for detecting the illuminance value of the ambient light source around the screen, and adjusting the appropriate value according to the illuminance value. Lighting lights to reduce indirect glare. In addition, the screen auxiliary illumination device of the present invention can adjust the brightness of the illumination source according to the feedback brightness signal of the screen and the brightness value of the background light source detected by the photo sensor to provide a suitable background light.

The embodiments are described in detail below, and the embodiments are only intended to be illustrative and not intended to limit the scope of the invention.

Please refer to FIGS. 1A and 1B, which respectively illustrate a real according to the present invention. A perspective view of a screen-assisted illumination device 100 of the embodiment and a cross-sectional view of a portion of the lamp cover 118. The screen-assisted illumination device 100 includes a light fixture 110, a first illumination source 120, a second illumination source 122, a switch 130, a first photo sensor 140, and a second photo sensor 142. The lamp holder 110 includes a support shaft 112, a sleeve 114, and a lamp cover 118 disposed on the support shaft 112 by the sleeve 114. The first light source 120 is disposed on the first surface S1 of the lamp cover 118 and emits light toward a first light emitting direction X. The second light source 122 is disposed on the second surface S2 of the lamp cover 118 and emits light toward a second light exiting direction Y. The first light exiting direction X is different from the second light exiting direction Y, for example, perpendicular to each other or intersecting a predetermined angle.

As shown in FIG. 1A, one end of the lamp cover 118 has an extension arm 116 that is fixed to the support shaft 112 by a sleeve 114, and the extension arm 116 and the sleeve 114 are rotatable relative to the support shaft 112. However, the present invention is not limited to being connected between the lamp cover 118 and the support shaft 112 by a single extension arm 116 and a single sleeve 114, and may also be connected by a three-link, four-link or other movable member to enable the lamp cover 118 and the support. There is not only a single axial rotational motion between the shafts 112, but also multiple axial rotations, stent extensions, and retraction movements.

In addition, the lamp cover 118 is configured to form a plurality of accommodating spaces for arranging the first illuminating source 120 and the second illuminating source 122, and illuminating the first illuminating source 120 and the second illuminating source 122 toward different light emitting directions. . The first illumination source 120 and the second illumination source 122 may be a light emitting diode array, a fluorescent tube or other illumination source, which is not limited in the present invention.

Referring to FIG. 1B, the lampshade 118 is provided with, for example, a cross. A partition 115 and a second partition 117, wherein the first partition 115 divides the second partition 117 into two regions, and the second partition 117 also divides the first partition 115 into two regions. The first light source 120 is disposed on the surface 115a of the first separator 115 (that is, on the first surface S1), and emits light toward the normal direction of the first separator 115 (that is, the first light exiting direction X). In addition, the second light source 122 is disposed on the surface 117a of the second separator 117 (that is, on the second surface S2), and emits light toward the normal direction of the second separator 117 (that is, the second light exiting direction Y). The first light-emitting source 120 and the second light-emitting source 122 are separated from each other by the first partition 115 and the second light-emitting source 122. Therefore, the first light-emitting direction X of the first light-emitting source 120 and the second light-emitting source 122 are The two light exit directions Y can not only be perpendicular to each other, but also do not interfere with each other.

In addition, referring to FIG. 1B, the first photo sensor 140 is disposed on the surface 115a of the first spacer 115 (that is, on the first surface S1) for detecting the brightness value of the background light source, and The light source 120 and the first light sensor 140 are separated by the second partition 117, so that the light emitted by the first light source 120 can be prevented from directly entering the first light sensor 140, thereby causing the first light sense. The detector 140 cannot accurately measure the brightness value of the background light source. Furthermore, the second photo sensor 142 is disposed on the surface 117a of the second spacer 117 (that is, on the second surface S2) for detecting the illuminance value of the ambient light source, and because the second illumination source 122 and the second The two photosensors 142 are separated by the first spacer 115, so that the light emitted by the second illumination source 122 can be prevented from directly entering the second photo sensor 142, thereby causing the second photo sensor 142 to be inaccurate. Measure the illuminance value of the ambient light source.

Please refer to FIGS. 2A and 2B, which respectively illustrate a real according to the present invention. A schematic diagram of the operation of the screen-assisted illumination device 100 of the embodiment in different modes of use. The support shaft 112 of the screen-assisted illumination device 100 can be disposed upright (or laterally) behind the screen 152 of the display 150 or on a table D or plane below the display 150, and the height of the shade 118 is substantially higher than the display 150. The height is such that the shade 118 is rotatable relative to the support shaft 112 to move horizontally to the rear of the display 150 (away from the user; as shown in Figure 2A) or to the front (near the user; as shown in Figure 2B).

In the second embodiment of the present embodiment, the lamp cover 118 is rotated relative to the support shaft 112 to the rear of the screen 152, and the usage mode of the first light-emitting source 120 of the first illumination source 120 toward the rear of the screen 152 is referred to as "screen usage mode". At this time, the user is opposite to the screen 152. The first light source 120 emits the first light L1 substantially toward the rear of the screen 152, and the first light L1 is reflected by the background W and then travels toward the screen 152 to make The background light source LB is the screen 152. At the same time, in the "screen use mode", the first photo sensor 140 is disposed on the lamp cover 118 and faces the rear of the screen 152 for detecting the brightness value of the background light source LB behind the screen 152. In an embodiment, when the brightness value of the background light source LB behind the screen 152 is less than a first set value, indicating that the ambient light is too dark, the first light source 120 is activated to reinforce the brightness of the background light source LB behind the screen 152. .

The background light source LB described above is not limited to be generated by the first light source 120, but may also be generated by an ambient light source. In addition, the brightness value of the background light source LB is generated by the light projected from the rear of the screen 152 to the background object W and reflected by the background object W to the screen 152, and may also be directly directed to the screen 152 by the rear of the screen 152. The traveling light is generated, and the present invention is not limited to having to set an illumination light source to be referred to as the background light source LB behind the screen 152, and it is not necessary to provide an illumination light source in front of the screen 152 and to project light to the background object W to generate The background light source LB, whether direct or reflected, may be referred to as a background light source LB as long as it can include light traveling from the rear of the screen 152 toward the screen 152.

In the second embodiment of the present embodiment, the lamp cover 118 is rotated relative to the support shaft 112 to the front of the screen 152, and the second light-emitting direction Y of the second illumination source 122 is perpendicular to the normal direction of the screen 152 and is directed toward the desktop D. The mode is called "desktop usage mode." Compared with the "screen usage mode", the "desktop usage mode" does not need to provide the background light source LB, but provides the illumination light of the desktop D. At this time, the user sits in front of the screen 152 (opposite the screen 152), may be using a keyboard or reading a book, the second illumination source 122 substantially emits the second light L2 toward the desktop D, and the second light L2 is by the keyboard or After the book is reflected, it travels in the opposite direction and enters the user's eyes as an illumination source for reading or typing. Meanwhile, in the "desktop use mode", the second photo sensor 142 is disposed on the lamp cover 118 and faces the table D for detecting the illuminance value of the ambient light source LS to the desktop D. In an embodiment, when the illuminance value of the ambient light source LS to the desktop D is less than a second set value, indicating that the illuminance of the ambient light source LS to the desktop D is insufficient, the second illuminating source 122 is activated to reinforce the ambient light source LS.

The illuminance value of the ambient light source LS is not limited to the illuminance value of the ambient light source LS to the projection light of the desktop D, and may also be the illuminance value of the projected light on the keyboard, the book or the screen display surface, when the second light sensor 142 is oriented. Only when the desktop D The illuminance value of the ambient light source LS to the desktop D is measured. Therefore, it is necessary to detect the illuminance value of the ambient light source LS according to the object to be detected by the second light sensor 142.

In addition to the above-described "screen usage mode" and "desktop usage mode", the present invention can also add other usage modes, and it is not limited to use only the above two types. In addition, in the "screen use mode", in addition to the first light source 120 to reinforce the background light source LB, the first light source 120 and the second light source 122 may be used to reinforce the background light source LB, or The two illumination sources 122 are used to reinforce the background light source LB, which is not limited in the present invention. In addition, the above usage mode can be switched by the mechanical or electronic switch 130 to achieve the function of manual or automatic switching. The following is a description of an embodiment, but the invention is not limited thereto.

Please refer to FIGS. 3A and 3B , which are schematic diagrams showing mode switching modes of the screen-assisted illumination device 100 according to an embodiment of the invention. The switch 130 includes a first conductive sheet 131, a second conductive sheet 133, and a steering joint 135. The first conductive sheet 131 and the second conductive sheet 133 are disposed on the first side A1 and the second side A2 of the support shaft 112, and the first side A1 and the second side A2 are, for example, opposite sides or two separated by a predetermined distance. Location. The steering joint 135 is disposed in the sleeve 114 of the support shaft 112 for electrically connecting the first conductive piece 131 or the second conductive piece 133 , and the sleeve 114 is pivotally connected between the extending arm 116 of the lamp cover 118 and the support shaft 112 . .

In FIG. 3A, when the first illumination source 120 is in the screen use mode, the steering joint 135 is rotated to the first side A1 of the support shaft 112 and electrically connected to the first conductive sheet 131 to activate the first illumination source 120. . In other words, the power supply The current at the terminal end can be conducted to the first light source 120 via the switch 130 to emit light in the first light exit direction X.

In FIG. 3B, when the second illumination source 122 is in a desktop use mode, the steering joint 135 is rotated to the second side A2 of the support shaft 112 and electrically connected to the second conductive sheet 133 to activate the second illumination source. 122. That is, the current of the power supply terminal can be conducted to the second illumination source 122 via the switch 130 to emit light in the second light exit direction Y.

In an embodiment, the steering joint 135 includes a metal ball 136 and an elastic member 137. Both the metal sphere 136 and the elastic member 137 are electrically conductive. The elastic member 137 is disposed in one of the receiving grooves C of the sleeve 114 for pressing the metal ball 136 to elastically contact the metal ball 136 between the first conductive piece 131 and the elastic member 137 or the second conductive piece 133. Between the elastic members 137.

The first conductive piece 131 and the second conductive piece 133 are respectively provided with limiting notches 132 and 134 for accommodating a part of the surface of the metal ball 136. The two limiting notches 132, 134 can stably position the metal ball 136 at a predetermined position. The position to maintain good electrical connection quality. In FIG. 3A, when the user wants to rotate the steering joint 135, the resistance of the metal ball 136 must be overcome first, so that the metal ball 136 protruding outside the receiving groove C can compress the elastic member 137 and return to the receiving groove C. After that, the steering joint 135 can be smoothly rotated.

In FIG. 3B, when the metal ball 136 reaches the second side A2 and is again pushed into the other limiting recess 134 by the elastic member 137, the movement stops, and the metal ball 136 is electrically connected to the second conductive piece 133. To achieve automatic switching Features.

The metal ball 136 and the elastic member 137 have the functions of electrical connection and clamping position, so that the user can automatically switch between different usage modes when adjusting the direction of the lamp cover 118 according to the use condition, which is more convenient and effective in use. Other types of steering joints 135 can be used for the above-mentioned switch 130, which is not limited in the present invention.

In addition, when neither the first conductive sheet 131 nor the second conductive sheet 133 is in contact with the metal sphere 136, the steering joint 135 is in a non-conductive state to turn off the power.

Next, please refer to FIG. 4A, which is a circuit block diagram of a screen-assisted illumination device 100 in accordance with an embodiment of the present invention. In the above-mentioned "screen use mode", the screen auxiliary illumination device 100 further includes a brightness controller 144 for controlling the brightness of the first light source 120. In one embodiment, the two input terminals In of the brightness controller 144 are electrically connected to the screen 152 and the first photo sensor 140 respectively, and the output end Out of the brightness controller 144 is electrically connected to the first illumination source 120. The brightness controller 144 is configured to receive a screen brightness signal output by the screen 152, and determine the brightness of the current background light source LB according to the brightness information of the screen and the brightness value of the background light source LB detected by the first light sensor 140. Is it enough? For example, the brightness of the background light source LB is controlled to be one third of the brightness of the screen. Therefore, the first setting value can be set to about one third of the brightness of the screen. When the brightness value of the background light source LB is less than one third of the brightness of the screen, the first illumination source 120 is activated and the first illumination source is controlled. The brightness of 120 is used to reinforce the brightness value of the background light source LB.

In an embodiment, the brightness controller 144 can obtain the current brightness signal of the screen by wired or wireless transmission, such as USB, WIFI, Bluetooth, or the like, or obtain the current brightness signal of the screen by means of light sensing.

In addition, please refer to FIG. 4B, which is a circuit block diagram of the screen-assisted illumination device 100 in accordance with an embodiment of the present invention. In the above-mentioned "desktop use mode", the brightness controller 144 of the screen auxiliary illumination device 100 can also be used to control the brightness of the second illumination source 122. The input end In of the brightness controller 144 is electrically connected to the second photo sensor 142 , and the output end Out of the brightness controller 144 is electrically connected to the second illumination source 122 . In an embodiment, the second photo sensor 142 faces the desktop to detect the illumination of the ambient light source LS to the desktop. The brightness controller 144 is configured to receive the illuminance value of the ambient light source LS detected by the second light sensor 142 to determine whether the illuminance value of the ambient light source LS around the current screen is sufficient. For example, the illuminance value of the ambient light source LS can be controlled within a range that does not cause indirect glare to the eye, thereby setting the second set value. When the illuminance value of the ambient light source LS is too low and less than the second set value, the second illuminating source 122 is activated and the brightness of the second illuminating source 122 is controlled to reinforce the ambient light source LS.

The screen-assisted illumination device disclosed in the above embodiment of the present invention is configured to provide a first light sensor on the lamp cover for detecting the brightness value of a background light source behind the screen, and adjusting the brightness according to the brightness value of the background light source. Background light source to reduce contrast glare. In addition, in the screen-assisted illumination device disclosed in the above embodiments of the present invention, a second photo sensor is additionally disposed on the lamp cover for detecting the illuminance value of the ambient light source around the screen, and the illuminance value is adjusted according to the illuminance value. Lighting, To reduce the occurrence of indirect glare. Also, since the switch is provided in the screen auxiliary illumination device of the present invention, when the user adjusts the direction of the lamp cover according to the use condition, the different usage modes are automatically switched at the same time, so that it is more convenient and effective to use.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

Claims (13)

A screen-assisted illumination device includes: a lamp holder including a support shaft and a lamp cover disposed on the support shaft; a first illumination source disposed on the first surface of the lamp cover and emitting light toward a first light-emitting direction a second illumination source disposed on the second surface of the lamp cover and emitting light in a second light-emitting direction, the first light-emitting direction being different from the second light-emitting direction; a switch disposed on the light frame for use To switch the first light source and the second light source; a first light sensor is disposed on the light cover for detecting a brightness value of a background light source behind the screen: and a second light sensing The device is disposed on the lamp cover for detecting an illuminance value of an ambient light source, wherein when the brightness value of the background light source behind the screen is less than a first set value, the first light source is activated; When the illuminance value of the light source is less than a second set value, the second illuminating source is activated. The screen-assisted illumination device of claim 1, wherein the first light-emitting direction is perpendicular to the second light-emitting direction. The screen-assisted illumination device of claim 1, wherein when the first illumination source is in a screen use mode, the lamp cover is rotated relative to the support axis to the rear of the screen, and the first illumination source is The first light exiting direction is toward the rear of the screen. The screen-assisted illumination device of claim 1, wherein the lampshade is rotated relative to the support shaft when the second illumination source is in a desktop use mode Turning to the front of the screen, the second light exiting direction of the second light source is perpendicular to the normal direction of the screen and facing the table top. The screen-assisted illumination device of claim 1, wherein the switch comprises a first conductive sheet, a second conductive sheet and a steering joint, wherein the first conductive sheet and the second conductive sheet are disposed a first side and a second side of the support shaft, and the steering joint is disposed in a sleeve of the support shaft for electrically connecting the first conductive piece or the second conductive piece, the sleeve is pivotally connected to the lamp cover Between the support shaft and the support shaft. The screen-assisted illumination device of claim 5, wherein when the first illumination source is in a screen use mode, the steering joint is rotated to the first side of the support shaft, and the first conductive sheet Electrically connected to activate the first illumination source. The screen-assisted illumination device of claim 5, wherein when the second illumination source is in a desktop use mode, the steering joint is rotated to the second side of the support shaft, and the second conductive sheet Electrically connected to activate the second illumination source. The screen-assisted illumination device of claim 5, wherein the steering joint comprises a metal ball and an elastic member, and the elastic member is disposed in a receiving groove of the sleeve for pressing the metal sphere So that the metal sphere is in elastic contact between the first conductive sheet and the elastic member or between the second conductive sheet and the elastic member. The screen-assisted illumination device of claim 8, wherein the first conductive sheet and the second conductive sheet are respectively provided with a limiting recess for receiving a part of the surface of the metal sphere. Such as the screen-assisted lighting device described in claim 1 of the patent scope, a brightness controller is electrically connected to the first light source and the screen for receiving a screen brightness signal output by the screen, and according to the screen brightness signal and the first light sensor detecting The brightness value of the background light source controls the brightness of the first light source to reinforce the brightness value of the background light source. The screen-assisted illumination device of claim 1, further comprising a brightness controller electrically connected to the second illumination source and illuminating the ambient light source according to the second photo sensor a value that controls the brightness of the second illumination source to reinforce the ambient light source. The screen-assisted illumination device of claim 1, wherein the first photo sensor is disposed on the first surface of the lamp cover, and the lamp cover is coupled to the first light source and the first light sensor. A partition is provided between the devices. The screen-assisted illumination device of claim 1, wherein the second photo sensor is disposed on the second surface of the lamp cover, and the lamp cover is coupled to the second illumination source and the second light sensor. A partition is provided between the devices.