TWI763210B - Clamp lamp and light control method applying the same - Google Patents

Abstract

A clamp lamp used to clamp on a screen. The screen has a front surface, a back surface, and a top surface connecting the front surface and the back surface. The clamp lamp includes a first light source and a clamp body. The clamp body comprises a second light source, a first clamping member and a second clamping member. The first clamping member has a first clamping portion and a lamp connecting portion connected to the first clamping portion. The lamp connecting portion is connected to the first light source. The second clamping member has a second clamping portion. When the lamp clamps the screen, the first clamping part is used to lean against the front surface, and the second clamping member is used to lean against the back surface, so that the first light source is above the top surface and the second light source is below the top surface. When the first light source is turned on, it is used to emit light toward the first area facing the front surface, and when the second light source is turned on, it is used to emit light toward the second area facing the back surface.

Description

Clip lamp and lighting control method using the same

The present invention relates to a clip lamp, and more particularly, to a clip lamp that can be clipped to a screen.

When using the screen, the ambient brightness is sometimes higher than the lighting in front of the screen (such as placing a lamp). At this time, the display screen brightness of the screen plus the total brightness of the desk lamp lighting is compared with the wall brightness behind the screen. The difference is too large, resulting in Users tend to get tired of this high-brightness contrast. In view of this, it is necessary to propose a new lamp for a screen to solve the above problems.

The present invention relates to a clip lamp clamped on a screen and a lighting control method using the same, which can provide beneficial eye protection effects when viewing the screen by human eyes.

According to a first aspect of the present invention, a clip lamp is provided for clipping to a screen. The screen has a front surface, a rear surface, and an upper surface connecting the front surface and the rear surface. The clip lamp includes a first light source and a clip body. The clamping body includes a second light source, a first clip and a second clip. The first clamp has a first clamp portion and a lamp connection portion connected to the first clamp portion. The lamp connection part is connected to the first light source. The second clamp has a second clamp portion. When the clamp lamp clamps the screen, the first clamp part is used for abutting against the screen On the front surface of the screen, the second clamping part is used for abutting against the rear surface of the screen, so that the first light source is above the upper surface of the screen and the second light source is below the upper surface of the screen. When the first light source is turned on, it is used to emit light toward a first area facing the front surface of the screen, and when the second light source is turned on, it is used to emit light toward a second area facing the rear surface of the screen.

According to the second aspect of the present invention, a light-emitting control method using the clip lamp proposed in the first aspect of the present invention is provided. The lighting control method includes the following steps: clamping the clip light on the screen; sensing the illuminance value of the use environment of the screen; calculating the luminous intensity of the first light source according to the illuminance value of the use environment; controlling the first light source to face the front surface of the screen A first area facing the screen emits light; judging whether the illuminance value of the first area meets a predetermined threshold; if the predetermined threshold is met, the second light source is controlled to emit light toward a second area facing the rear surface of the screen; if the predetermined threshold is not met value, the luminous intensity of the first light source is calculated according to the illuminance value of the first area.

In order to have a better understanding of the above-mentioned and other aspects of the present invention, the following specific examples are given and described in detail in conjunction with the accompanying drawings as follows:

10: Screen

10t: upper surface

10f: Front surface

10b: Back Surface

100: clip lights

110: The first light source

120: clamping body

121: Second light source

1211: The first light-emitting array

1212: Second light-emitting array

1213: The third light-emitting array

122: The first clip

1221: The first clamping part

1222: Lamp connection

123: Second clip

1231: Second clamping part

1232: Translucent Guard

130: Counterweight

130S1: first side

130S2: Second side

130S3: Third side

D: distance

DS: Distance sensor

IR: Irradiation range

LI: clip light interface

LS: Light Sensor

PM: Processing module

PR: Contour range

R: wall

S110~S150, S161~S162: Steps

Z1: The first zone

Z2: The second zone

θ: included angle

Figure 1 shows a side view of the clip lamp according to an embodiment of the present invention disposed on a screen; Figure 2 illustrates a rear view of the clip lamp according to an embodiment of the present invention disposed on the screen; Figure 3 illustrates the implementation of the present invention Figure 4 shows a perspective view of some components of the clip lamp according to an embodiment of the present invention; Figure 5 illustrates a functional block diagram of some components of the clip lamp according to an embodiment of the present invention; FIG. 6 is a flowchart of a light-emitting control method of a clip lamp according to an embodiment of the present invention.

Please refer to FIGS. 1 to 2. FIG. 1 shows a side view of the clip light 100 disposed on the screen 10 according to an embodiment of the present invention, and FIG. 2 illustrates the clip light 100 disposed behind the screen 10 according to an embodiment of the present invention. view.

The screen 10 has a front surface 10f, a rear surface 10b, and an upper surface 10t, wherein the upper surface 10t connects the front surface 10f and the rear surface 10b. The clip lamp 100 includes a first light source 110 and a clip body 120 . The clamping body 120 includes a second light source 121 , a first clip 122 and a second clip 123 . The first clip 122 has a first clip part 1221 and a lamp connection part 1222 , wherein the lamp connection part 1222 is connected to the first clip part 1221 . The first light source 110 is connected to the lamp connecting portion 1222 , and the first light source 110 can pivot relative to the lamp connecting portion 1222 to adjust its lighting angle. The second clip 123 has a second clip portion 1231 . In one embodiment, the first clamping part 1221 and the second clamping part 1231 are movably connected, for example, they can move with each other through a hinge or a sliding manner. In one embodiment, the second light source 121 can be optionally disposed on the second clamping portion 1231; when changing the structural length of the clamping body 120 as shown in FIG. 1, for example, the first clamping portion 1221 is extended to the rear surface 10b or The second light source 121 is changed to a structure for adjusting the projection direction, and the second light source 121 can also be disposed on the first clamping portion 1221 .

As shown in FIG. 1, when the clip lamp 100 clamps the screen 10, the first clamping portion 1221 is used to abut the front surface 10f, and the second clamping portion 1231 is used to abut the rear surface 10b, so that the first light source 110 The second light source 121 may be located above the upper surface 10t, and the second light source 121 may be located below the upper surface 10t (the Z axis in the figure represents the reference direction of up and down). The front surface 10f of the screen 10 faces the first area Z1 to provide a display image for the user to watch. When the first light source 110 of the clip light 100 is turned on, it is used to emit light toward the first area Z1 to provide illumination in front of the screen 10 . The rear surface 10b of the screen 10 faces the second area Z2 and has a distance D from a reference object (eg, a wall R) in the second area Z2. When the second light source 121 holding the main body 120 is turned on, it is used to emit light toward the second area Z2 to provide illumination behind the screen 10 .

It should be noted that when the use environment of the screen 10 is relatively dim, if only the first area Z1 is provided with illumination, the brightness difference between the front and the rear of the screen 10 is quite large, and the stimulation to the human eyes is too large and the eyes are easily fatigued. Compared with the case of providing illumination only in the first area Z1, the first light source 110 of the clip lamp 100 emits light in the first area Z1 and the second light source 121 of the clamping body 120 emits light in the second area Z2 at the same time, so as to reduce the screen size 10 The difference in brightness between the front and rear can reduce the discomfort of the human eye to the contrast between bright and dark.

In addition, the first light source 110 is designed to be located above the upper surface 10 t of the screen 10 to provide illumination of the main reading area (ie, the first area Z1 ) and avoid blocking the display screen of the screen 10 . However, the second light source 121 is used to provide supplementary light in the rear area of the screen 10 (ie, the second area Z2 ) to reduce the difference in brightness, so the height of the second light source 121 is designed to be located below the upper surface 10 t of the screen 10 . Since the first light source 110 is used in a reading environment requiring higher brightness, the luminous intensity of the first light source 110 can be set higher than the luminous intensity of the second light source 121, and there is a ratio between the two.

As shown in FIG. 1 , the second clip 123 can optionally include a light-transmitting cover 1232 , and the light-transmitting cover 1232 can be used to shield the second light source 121 , so that the second light source 121 can be disposed on the second clip 123 to protect the second light source 121 from being damaged by contact with the external environment. At the same time, the light-transmitting cover 1232 has light-transmitting properties so that the light emitted by the second light source 121 can pass therethrough, so it does not affect the lighting behind the screen 10 and can provide waterproof and dustproof effects.

As shown in FIG. 2, the irradiation range IR of the second light source 121 can be designed to be larger than the outline range PR of the rear surface 10b of the screen 10, so as to more effectively reduce the brightness difference between the front and rear of the screen 10. On the contrary, if the irradiation range IR If it is too small, most of the light emitted by the second light source 121 will be covered by the rear surface 10b of the screen, and an effective light supplement effect cannot be formed.

Please refer to FIGS. 3 to 4. FIG. 3 shows a rear view of the second clip 123 of the clip lamp 100 and the second light source 121, and FIG. 4 illustrates the relationship between the second clip 123 of the clip lamp 100 and the second light source 121. Stereogram.

It should be noted that, in the third to fourth figures, the light-transmitting shield 1232 in the first figure is omitted in order to clearly illustrate the internal configuration of the second clip 123 . As shown in FIG. 3 , the second light source 121 includes a first light emitting array 1211 , a second light emitting array 1212 and a third light emitting array 1213 , the first light emitting array 1211 and the second light emitting array 1212 are arranged in parallel, and the third light emitting array 1213 One end is connected to the first light-emitting array 1211 , and the other end of the third light-emitting array 1213 is connected to the second light-emitting array 1212 . Specifically, the clip lamp 100 further includes a counterweight 130 disposed inside the second clip 123 . The first light emitting array 1211 and the second light emitting array 1212 are respectively disposed on two opposite sides of the counterweight 130 , that is, disposed corresponding to the first side surface 130s1 and the first side surface 130s2 . The third light-emitting array 1213 is disposed on one side connected between the two sides of the counterweight 130, that is, disposed corresponding to the third side surface 130s3. That is, the third light emitting array 1213 is disposed between the first light emitting array 1211 and the second light emitting array 1212 . The third light emitting array 1213 may be, but not limited to, be perpendicular to the first light emitting array 1211 and the second light emitting array 1212 to form a U-shaped arrangement. The first light emitting array 1211 is used for emitting light on the right side facing the front surface 10f of the screen 10t, the second light emitting array 1212 is used for emitting light on the left side facing the front surface 10f of the screen 10t, and the third light emitting array 1213 is used for emitting light on the left side facing the front surface 10f of the screen 10t. The upper side of the front surface 10f facing the screen 10t emits light. In this way, supplementary lighting for the periphery of the rear of the screen 10 is provided.

As shown in FIG. 4 , the light-emitting direction of the third light-emitting array 1213 has an included angle θ with the third side surface 130s3 of the adjacent counterweight 130 . Similarly, the first light emitting array 1211 and the second light emitting array 1212 may have an included angle θ with the first side 130s1 and the second side 130s2 of the adjacent counterweight 130 , respectively. If the included angle θ is about 90 degrees, the first light-emitting array 1211 and the second light-emitting array 1212 are facing the left and right regions of the screen 10 to emit light, and the third light-emitting array 1213 is facing the top of the screen 10 . When the area emits light, the second light source 121 has a weak effect on the fill light behind the screen 10 and will directly illuminate the eyes of people passing through/located in the left and right areas of the screen 10 . Therefore, preferably, the included angle θ is designed to be an acute angle, so that the first light-emitting array 1211 , the second light-emitting array 1212 and the third light-emitting array 1213 can emit light toward the rear and side of the screen 10 , which is not an acute angle compared to the included angle θ In this case, a better fill light effect behind the screen 10 can be provided and direct exposure to the human eyes passing through/located in the left and right regions of the screen 10 can be avoided.

FIG. 5 is a functional block diagram of some components of the clip lamp 100 according to an embodiment of the present invention. The clip lamp 100 may further include a light sensor LS, a distance sensor DS, a processing module PM and a clip lamp interface LI. The light sensor LS can be disposed outside the clip lamp 100 to sense the illuminance value of the first area Z1, and the processing module PM is coupled to the light sensor LS and senses the illuminance of the first area Z1 according to the sensed illuminance value. value to control the luminous intensity of the second light source 121, so that the illuminance value of the second area Z2 is lower than the illuminance value of the first area Z2. In one embodiment, the processing module PM can control the luminous intensity of the second light source 121 so that the illuminance value of the second area Z2 is about 1/3 of the illuminance value of the first area Z1, that is, the illuminance value of the first area Z1 It is about three times the illuminance value of the second region Z2, which is a range of illuminance difference that makes human eyes less prone to fatigue.

The distance sensor DS can be disposed outside the clip light 100 . When the clip light 100 is clipped on the screen 10 , the distance sensor DS is used to sense the information of the distance D between the rear surface 10 b of the screen 10 and the wall R , and the processing module PM controls the luminous intensity of the second light source 121 according to the distance D. Specifically, the distance D has a positive correlation with the luminous intensity of the second light source 121 . If the distance D is larger, the brightness of the light reflected by the wall R will be weaker. Therefore, the luminous intensity of the second light source 121 must be increased to maintain the front and rear of the screen 10 . On the contrary, if the distance D is smaller, the brightness of the light reflected by the wall R is stronger, so the luminous intensity of the second light source 121 can be reduced. By adjusting the luminous intensity of the second light source 121 according to the distance between the rear surface 10b of the screen 10 and the reference object, a suitable lighting environment can be provided.

The clip light 100 can be coupled to a transmission interface of the screen 10 through its clip light interface LI to receive a setting value related to the real-time display screen of the screen 10. The clip light street L1 and the transmission interface of the screen 10 are, for example, mutually common sequences. Master port of the Universal Serial Bus. This setting value is, for example, parameter settings such as brightness, color temperature, sharpness, contrast, etc. of the display image of the current screen. The processing module PM can control the brightness value and color value of the first light source 110 and the second light source 121 according to the setting value, so as to More reference is made to the display information of the real-time display image of the screen 10 to adjust the lighting, so as to automatically provide lighting control adapted to the display situation of the screen. In one embodiment, the clip light 100 can be adapted to be coupled with the transmission interface of the screen 10 to obtain the brightness value of the screen, and the processing module PM can be used to turn off the first light source, that is, without turning on the first light source 110, Through the processing module PM, the luminous intensity of the second light source 121 is correspondingly adjusted according to the brightness value of the screen, so as to realize the effect that the second light source 121 can be independently controlled by the first light source 110 . In addition, the brightness value of the above-mentioned screen is not limited to be obtained and adjusted only through the coupling of the transmission interface of the screen 10, but can also be obtained directly through the clip light 100, for example, it can be obtained through a button switch matched with or included in the clip light 100. Clip the internal setting value of the lamp 100 and adjust the brightness value.

Specifically, referring to the first light-emitting array 1211 , the second light-emitting array 1212 and the third light-emitting array 1213 in FIGS. 3 to 4 for description, the set values include the right areas of the real-time display screen corresponding to the screen 10 respectively. , a first setting value, a second setting value and a third setting value of the left area and the upper area, the processing module PM according to the first setting value, the second setting value and the third setting value of the area corresponding to different real-time display images The set value is used to control the first light-emitting array 1211 , the second light-emitting array 1212 and the third light-emitting array 1213 to set corresponding luminance values and color values. For example, if the brightness value of the right area of the real-time display image corresponding to the screen 10 is low/high, the processing module PM controls the corresponding first light-emitting array 1211 to lower/higher the light-emitting brightness, so as to reduce the brightness of the screen 10 and the environment Difference. Similarly, the corresponding third light-emitting array 1213/second light-emitting array 1212 can be individually controlled to adjust the light-emitting luminance corresponding to the luminance value of the upper area/left area of the real-time display image of the screen 10. In this way, each light-emitting array can be controlled to match the area of the display screen corresponding to each light-emitting array, so as to achieve a more accurate independent zone light control effect.

Please refer to FIG. 6 , which shows a flowchart of a light emission control method S of the clip lamp 100 according to an embodiment. In step S110 , the clip lamp 100 is clamped to the screen 10 , so that the first light source 110 is located above the upper surface 10 t of the screen 10 , and the second light source 121 is located below the upper surface 10 t of the screen 10 .

In step S120, the illuminance value of the usage environment of the screen 10 is sensed. For example, the light sensor LS can be used for sensing, and the illuminance value of the use environment is comprehensively sensed about the screen light displayed on the screen 10 and the reflected light of the desktop on which the screen 10 is placed.

In step S130, the luminous intensity of the first light source 110 is calculated according to the illuminance value of the use environment. For example, the luminous intensity required by the first light source 110 can be preliminarily calculated by the processing module PM to match the ambient illuminance of the general screen usage.

In step S140 , the first light source 110 is controlled to emit light toward the first area Z1 facing the front surface 10 f of the screen 10 . For example, the first light source 110 can be controlled to emit light through the processing module PM, so as to serve as the main lighting supply for the first area Z1 where the user faces the screen 10 .

In step S150, it is determined whether the illuminance value of the first zone Z1 satisfies a predetermined threshold. For example, it can be judged by the processing module PM, and the predetermined threshold can be defined as about 500 lux, which is in line with the recommended ambient brightness for general screen use.

In step S161 , if the predetermined threshold is satisfied, the second light source 121 is controlled to emit light toward the second area Z2 facing the rear surface 10 b of the screen 10 . For example, the second light source 121 can be controlled to emit light through the processing module PM, so as to reduce the brightness difference between the front and rear of the screen 10 and improve the For supplementary light. Specifically, the processing module PM can control the luminous intensity of the second light source 121 so that the illuminance value of the second area Z2 is about 1/3 of the illuminance value of the first area Z1, which is designed to make the human eye less tired. . For example, if the first region Z1 reaches about 500 lux, the illuminance value of the second region Z2 is controlled to be about 170 lux.

In step S162, if the predetermined threshold is not met, the luminous intensity of the first light source Z1 is calculated according to the illuminance value of the first area Z1. For example, the luminous intensity required by the first light source 110 can be calculated again through the processing module PM, so as to intelligently adjust the luminous intensity in accordance with the current environment.

In addition, through the processing module PM, the luminous intensity of the first light source 110 can be made higher than the luminous intensity of the second light source 121 in a proportional relationship.

In addition, the illuminance value of the first area Z1 can be sensed through the light sensor LS, and the processing module PM controls the luminous intensity of the second light source 121 according to the illuminance value of the first area Z1, so that the illuminance value of the second area Z2 lower than the illuminance value of the first zone Z1.

In addition, the distance D between the rear surface 10b of the screen 10 and the wall R1 can be sensed through the distance sensor DS, and the processing module PM controls the luminous intensity of the second light source 121 according to the distance D.

In addition, through the processing module PM, the luminous intensity of the first light source 110 can be made higher than the luminous intensity of the second light source 121 in a proportional relationship.

In addition, the clip light 100 can be coupled to a transmission interface of the screen 10 to obtain the brightness value of the screen 10, and the processing module PM controls the luminous intensity of the second light source 121 according to the brightness value. The clip lamp 100 can receive the setting value related to the real-time display image of the screen 10 through the coupling with the screen 10 , and the processing module PM controls the brightness value and the color value of the second light source 121 according to the setting value.

Through the description of the above-mentioned embodiments, the first light source and the second light source of the clip lamp clamped on the screen can emit light at the front and rear of the screen at the same time, so as to reduce the brightness difference between the front and the rear of the screen, compared with only the screen. In the lighting condition of a single light emitting in front, the clip lamp of the present invention can make people's eyes not easily tired when using the screen, and achieve the beneficial effect of eye protection.

To sum up, although the present invention has been disclosed by the above embodiments, it is not intended to limit the present invention. Those skilled in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

10: Screen

10t: upper surface

10f: Front surface

10b: Back Surface

100: clip lights

110: The first light source

120: clamping body

121: Second light source

122: The first clip

1221: The first clamping part

1222: Lamp connection

123: Second clip

1231: Second clamping part

1232: Translucent Guard

D: distance

R: wall

Z1: The first zone

Z2: The second zone

Claims (21)

A clip lamp is used for clipping on a screen, the screen has a front surface, a rear surface and an upper surface connecting the front surface and the rear surface, the clip lamp comprises: a first light source; and a clip The main body includes: a second light source; a first clip having a first clamping part and a lamp connecting part connected to the first clamping part, the lamp connecting part is connected to the first light source; and a The second clamping part has a second clamping part; wherein, when the clip lamp clamps the screen, the first clamping part is used for abutting against the front surface, and the second clamping part is used for abutting against the front surface The rear surface, so that the first light source is above the upper surface and the second light source is located below the upper surface, when the first light source is turned on, it is used to emit light toward a first area facing the front surface, the When the second light source is turned on, it is used to emit light toward a second area facing the rear surface. The clip lamp of claim 1, wherein the luminous intensity of the first light source is higher than the luminous intensity of the second light source in a ratio relationship. The clip lamp according to claim 1, further comprising: a processing module for turning off the first light source and correspondingly adjusting the luminous intensity of the second light source according to a brightness value, wherein the brightness value is optional The clip lamp is coupled with a transmission interface of the screen to obtain the internal setting value of the clip lamp. The clip lamp according to claim 1, further comprising: a photo sensor for sensing the illuminance value of the first area; and a processing module coupled to the first photo sensor and used for controlling the illuminance value of the second light source according to the illuminance value of the first area luminous intensity, so that the illuminance value of the second area is lower than the illuminance value of the first area. The clip lamp of claim 4, wherein the processing module controls the luminous intensity of the second light source so that the illuminance value of the second area is about 1/3 of the illuminance value of the first area. The clip lamp of claim 4, wherein the clip lamp is adapted to be coupled with a transmission interface of the screen to obtain a display brightness value of the screen, and the processing module controls the second light source according to the display brightness value luminous intensity. The clip lamp according to claim 4, further comprising: a distance sensor disposed on the second clamping portion, wherein when the clip lamp is clamped on the screen, the distance sensor is used to sense the rear The distance between the surface and a reference object facing the rear surface, the processing module controls the luminous intensity of the second light source according to the distance so that the luminous intensity of the second light source is positively related to the distance size. The clip lamp according to claim 1, wherein the illumination range of the second light source is larger than the contour range of the rear surface. The clip lamp as claimed in claim 1, wherein the second light source is disposed inside the second clip, the second clip further comprises a light-transmitting cover for shielding the second light-transmitting cover The light source is used for the light emitted by the second light source to pass through. The clip lamp of claim 1, wherein the second light source comprises a first light-emitting array, a second light-emitting array and a third light-emitting array, the first light-emitting array and the second light-emitting array are arranged in parallel, and the first light-emitting array is arranged in parallel with the second light-emitting array. One end of the three light-emitting arrays is connected to the first light-emitting array, and the other end of the third light-emitting array is connected to the second light-emitting array. The clip lamp as claimed in claim 10, wherein the clip lamp further comprises a counterweight, the first light-emitting array and the second light-emitting array are respectively disposed on two sides of the counterweight, wherein the first light-emitting array, the second light-emitting array The light-emitting directions of the second light-emitting array and/or the third light-emitting array respectively have an included angle with a side surface of the adjacent counterweight, and the included angle is an acute angle. The clip lamp according to claim 1, further comprising: a clip lamp interface coupled to a transmission interface of the screen to receive a setting value; and a processing module for controlling the brightness value of the second light source according to the setting value and color values, wherein the set value is associated with a real-time display of the screen. The clip lamp of claim 12, wherein the second light source comprises a first light-emitting array, a second light-emitting array and a third light-emitting array, and the third light-emitting array is disposed between the first light-emitting array and the second light-emitting array Between the light-emitting arrays, and the third light-emitting array is perpendicular to the first light-emitting array and the second light-emitting array, the setting value includes a first setting value, a second setting value and a third setting value, the first setting value The setting value, the second setting value and the third setting value respectively correspond to a right area, a left area and an upper area of the real-time display screen, and the first setting value, the second setting value and the third setting The values correspond to the first light-emitting array, the second light-emitting array and the third light-emitting array respectively, and the processing module is based on the first setting The fixed value, the second setting value and the third setting value set the luminance value and the color value of the first light emitting array, the second light emitting array and the third light emitting array. A clip lamp is used for clipping on a screen, the screen has a front surface, a rear surface and an upper surface connecting the front surface and the rear surface, the clip lamp comprises: a first light source; and a clip The main body includes: a second light source; a first clip having a first clamping part and a lamp connecting part connected to the first clamping part, the lamp connecting part is connected to the first light source; and a The second clamping part has a second clamping part; wherein, when the clip lamp clamps the screen, the first clamping part is used for abutting against the front surface, and the second clamping part is used for abutting against the front surface The rear surface, so that the first light source is above the upper surface, when the first light source is turned on, it is used to emit light toward a first area facing the front surface, and when the second light source is turned on, it is used to face the rear A second area facing the surface emits light; wherein, the second light source is arranged inside the second clip, and the second clip further includes a light-transmitting shield for shielding the first Two light sources for the light emitted by the second light source to pass through. A clip lamp is used for clipping on a screen, the screen has a front surface, a rear surface and an upper surface connecting the front surface and the rear surface, the clip lamp comprises: a first light source; and a clamping body, comprising: a second light source; a first clamping member having a first clamping portion and a lamp connecting portion connected to the first clamping portion, the lamp connecting portion connected to the first light source; and a second clip having a second clip; wherein, when the clip lamp clips the screen, the first clip is used to abut the front surface, the first clip The two clamping portions are used for abutting against the rear surface, so that the first light source is located above the upper surface and the second light source is located below the upper surface. When the first light source is turned on, it is used to face the front surface. A pair of first regions emit light, and when the second light source is turned on, it is used to emit light toward a second region facing the rear surface; wherein, when the clip light clamps the screen, the second clamping portion is adjacent to the A plane formed by a periphery of the second light source is substantially parallel to the front surface. A light-emitting control method applying the clip lamp according to claim 1, comprising: clamping the clip lamp on the screen; sensing the illuminance value of the use environment of the screen; calculating the first illuminance value according to the illuminance value of the use environment The luminous intensity of a light source; controlling the first light source to emit light toward a first area facing the front surface; judging whether the illuminance value of the first area satisfies a predetermined threshold; if the predetermined threshold is satisfied, controlling the second light source to face A second area facing the rear surface emits light; Sensing the distance between the rear surface and a reference object facing the rear surface, and controlling the luminous intensity of the second light source according to the distance so that the luminous intensity of the second light source is positively related to the the size of the distance; and if the predetermined threshold is not met, calculating the luminous intensity of the first light source according to the illuminance value of the first area. The light-emitting control method of claim 16, further comprising: making the light-emitting intensity of the first light source higher than the light-emitting intensity of the second light source in a proportional relationship. The lighting control method according to claim 16, further comprising: sensing the illuminance value of the first area, and controlling the luminous intensity of the second light source according to the illuminance value of the first area, so that the illuminance of the second area is The value is lower than the illuminance value of the first area. The light emission control method of claim 16, further comprising: controlling the light emission intensity of the second light source so that the illuminance value of the second area is approximately 1/3 of the illuminance value of the first area. The lighting control method of claim 16, further comprising: coupling the clip light with a transmission interface of the screen to obtain a brightness value of the screen, and controlling the lighting intensity of the second light source according to the brightness value. The lighting control method of claim 16, further comprising: receiving a setting value related to a real-time display image of the screen; and controlling the luminance value and the color value of the second light source according to the setting value.

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