WO2024041656A1

WO2024041656A1 - Light guide plate structure of sign light

Info

Publication number: WO2024041656A1
Application number: PCT/CN2023/115120
Authority: WO
Inventors: 钟敏华
Original assignee: 广东敏华电器有限公司
Priority date: 2022-08-26
Filing date: 2023-08-26
Publication date: 2024-02-29

Abstract

The present application relates to the technical field of emergency lighting, and provides a light guide plate structure of a sign light, comprising a housing, and a light guide plate and a light source plate provided in the housing. The light guide plate is provided with a light incident end and a light exit end; the thickness of the light incident end is larger than that of the light exit end; the light source plate is provided with an LED light source; and light from the LED light source is transmitted to the light exit end by means of the light incident end. The thickness of the light incident end is larger than that of the light exit end, and the light from the LED light source is transmitted to the light exit end by means of the light incident end; by locally increasing the area of the light incident end, the light from the LED light source is fully utilized; and the thickness of the light exit end is not limited by the size of the LED light source any more, and can be reduced, such that materials for the light guide plate are saved, and products have proper thicknesses, and are more harmonious and beautiful in process design.

Description

A kind of sign light light guide plate structure

Technical field

The present invention relates to the technical field of lamps, and in particular to a light guide plate structure of a sign lamp.

Background technique

The light guide plate has been widely used in fire emergency sign lamps because it can better exert the light effect of the LED light source and excellent light guide performance. The existing light guide plate lighting structure is to set the LED light source on the edge of the light guide plate, and through the LED light source point The entire light guide plate is illuminated and displayed through the housing of the lamp. Fire emergency sign lights using light guide plates are very popular in the market because of their simplicity, safety and other characteristics.

In order to make full use of the light effect, the thickness of the light guide plate should be greater than the thickness of the LED light source; with the rapid development of optical technology and light guide plate manufacturing technology, the thickness of the light guide plate is getting smaller and smaller, and due to the existing LED light source Due to size restrictions, the thickness of the light guide plate cannot continue to be reduced. The thickness of the light guide plate determines the thickness of the lamp. The thinner the light guide plate, the less material is required and the lower the cost. The thinner the lamp, the more popular it is with users. Welcome, how to break through the size limitations of LED light sources and apply thinner light guide plates is an urgent problem that the industry needs to solve.

On the other hand, light guide plates have been widely used in fire emergency sign lamps because they can better utilize the light efficiency of LED light sources and excellent light guide performance. With the rapid development of the emergency lighting industry, signs with ultra-thin lamp bodies Lamps are very popular in the market because of their simplicity, safety and other characteristics.

The thickness of the ultra-thin sign light is determined by the thickness of the light guide plate and circuit board. The thinner the light guide plate and circuit board in the light body, the thinner the light body, the more popular it will be with users, and the smaller the light body will be. Small, the cost of the lamp is also reduced accordingly. However, due to the size limitation of the electronic components on the circuit board, in order to place the circuit board, the thickness of the lamp body must match the thickness of the circuit board. Due to the structural limitations of the existing lamps, As a result, light guide plates that are thinner than the circuit board cannot be installed.

Contents of the invention

One object of the present invention is to provide an ultra-thin sign lamp with a simple structure and which can be installed with a light guide plate that is thinner than a circuit board.

In order to achieve the above object, the present invention provides an ultra-thin sign lamp, which includes a casing, a light guide plate and a circuit board arranged in the casing. The casing is provided with a lighting position and a board placing position, and the light guide plate is disposed at the In the lighting position, the circuit board is arranged in the board placing position, and the cross-sectional width of the lighting position and the housing is smaller than the width of the board placing position and the housing.

Preferably, the light-emitting position is adapted to the cross-sectional width of the housing and the thickness of the light guide plate.

Preferably, the housing is provided with an inwardly concave support, the support is disposed in the light-emitting position, and the cross-sectional width between the support and the housing is smaller than the width of the plate placement position. .

Preferably, the board placing position is arranged at the edge of the light-emitting position, and the circuit board is arranged at the edge of the light guide plate.

Preferably, the board placing position is arranged in the middle of the light-emitting position, and the circuit board is arranged in the middle of the light guide plate.

Preferably, the circuit board is provided with an LED light source, and the light guide plate is optically connected to the LED light source.

Preferably, the housing includes a first housing and a second housing, the first housing and/or the second housing are provided with a marking hole, and the position of the marking hole is consistent with the position of the light-emitting position. adaptation.

Preferably, the support is provided on the first housing and/or the second housing.

Preferably, a battery is provided in the housing, the housing is provided with a battery position, the cross-sectional width of the battery position is greater than the cross-sectional width of the light-emitting position, and the storage battery is arranged in the battery position.

Preferably, the circuit board is provided with components, and the components are arranged in the board placement position.

Preferably, the peripheral edge of the housing is an edge portion, the cross-sectional width of the edge portion is greater than the cross-sectional width of the light-emitting position and the housing, and the edge portion surrounds the light-emitting position.

Compared with the prior art, the beneficial effects of the present invention are: the light guide plate is placed at the light-emitting position, the circuit board is placed at the board position, the cross-sectional width of the light-emitting position and the housing matches the thickness of the light guide plate, and the thickness of the housing matches the thickness of the light guide plate. The thickness of the light guide plate is no longer relevant. While the circuit board can be installed, even a thinner light guide plate can be installed in the housing, which can greatly improve the installation diversity of the light guide plate and effectively save product costs.

In another embodiment of the present application, an ultra-thin sign light is also disclosed, which includes: a casing, a light guide plate and a circuit board arranged in the casing. The casing is provided with a lighting position and a board placing position, so The light guide plate is arranged in the lighting position, the circuit board is arranged in the board placing position, and the cross-sectional width of the lighting position and the housing is smaller than the width of the board placing position and the housing. The light guide plate is placed in the light-emitting position, and the circuit board is placed in the board position. The cross-sectional width of the light-emitting position and the shell matches the thickness of the light guide plate. The thickness of the shell is no longer related to the thickness of the light guide plate. The circuit board can be installed At the same time, even thinner light guide plates can be installed in the housing, which can greatly improve the installation diversity of light guide plates and effectively save product costs.

In another aspect of the present application, the second object of the present invention is to provide a light guide plate structure for a sign light that is simple in structure and low in cost.

In order to achieve the above object, the present invention provides a light guide plate structure for a sign light, which includes a housing, a light guide plate and a light source plate arranged in the housing. The light guide plate is provided with a light inlet end and a light emitting end. The thickness of the light inlet end is Greater than the thickness of the light-emitting end, an LED light source is provided on the light source board, and the light from the LED light source is transmitted to the light-emitting end through the light inlet end.

Preferably, the housing is provided with a marking hole, the position of the light-emitting end matches the position of the marking hole, and is displayed to the outside through the marking hole, and the light-incoming end is arranged outside the marking hole.

Preferably, the light entrance end includes a light entrance surface, and the light entrance surface faces the LED light source.

Preferably, the thickness of the light entrance end is greater than the thickness of the LED light source.

Preferably, the thickness of the light entrance end is adapted to the thickness of the housing.

Preferably, the light-input end and the light-emitting end are connected through a bevel.

Preferably, the light entrance end includes a light entrance surface, the light entrance surface extends in the direction of the light emitting end to form an extension end, and the extension end and the light emitting end are connected through an inclined surface.

Preferably, one side of the light guide plate extends upward to form a light inlet end, the light inlet end is provided with a slope connected to the light emitting end, and the other side is flat.

Preferably, both sides of the light guide plate extend outward to form a light entrance end, and are provided with a bevel connecting the light emitting end.

Preferably, the light inlet end is arranged at the edge of the light emitting end, and the LED light source is arranged at the edge of the light guide plate.

Preferably, the light source plate is disposed in the middle of the light guide plate, and the light guide plate is provided with a light entrance end facing the LED light source.

Preferably, the light entrance end is provided with a recessed light entrance position.

Preferably, the housing is provided with a light-emitting position and a board-placement position, the light-emitting end is arranged in the light-emitting position, the light source plate and the light-input end are arranged in the board-placement position, and the light-emitting position and The cross-sectional width of the housing is smaller than the width of the board placement position and the housing.

Preferably, the light-emitting position is adapted to the cross-sectional width of the housing and the thickness of the light-emitting end.

Compared with the prior art, the beneficial effects of the present invention are: (1) The thickness of the light-input end is greater than the thickness of the light-emitting end, and the light from the LED light source is transmitted to the light-emitting end through the light inlet end. area, so that the light from the LED light source can be more fully The thickness of the light-emitting end is no longer limited by the size of the LED light source and can be set thinner, thereby saving the material of the light guide plate, making the product more orderly in thickness, more coordinated and beautiful, and more beautiful in process design; (2) All The thickness of the light entrance end is greater than the thickness of the LED light source. When the housing is stressed, the light entrance end can support the housing to prevent the housing from contacting the LED light source and causing damage to the LED light source; (3) Between the light entrance end and the light emitting end Equipped with a slope, the light energy can better enter from the light-input end to the light-emitting end, so that the light efficiency of the light guide plate can be fully utilized.

As an important safety facility, emergency lighting is powered by a host connected to it, where the host is an emergency lighting controller, an emergency power supply box, or an emergency distribution box; changes in the output power of the host may cause The flickering effect of electrical appliances will be detrimental to fire emergency lighting.

In order to solve this problem, in some embodiments of the present application, an energy storage device is connected inside the host or on the light source board of the fire emergency lighting fixture powered by the host as a buffer unit of electrical energy, so that when the power supply provided by the host fluctuates In the process, the power supply to the light source board in the fire emergency lighting fixture can be kept stable, so that the luminous power of the light source board is basically constant.

Based on this concept, the emergency lighting fixtures (or lamps, ultra-thin sign lights) in some embodiments of the present application also include the above-mentioned energy storage device. The lamp (ultra-thin sign lamp) in any embodiment of the present application may also include: a power supply board and an energy storage device. The energy storage device is provided on the power supply board, is electrically connected to the light source board, and is used for external connection. Electrical energy from the battery assembly; the energy storage device further includes:

A plurality of electricity storage components, the plurality of electricity storage components respectively include anodes and cathodes;

the second power storage component; and

one or more switching units, wherein said one or more switching units comprise at least two or more poles, and wherein:

In the high-level mode of the one or more switching units, the first power storage component and the second power storage component are coupled in series, and

In the low-level mode of the one or more switching units, the first electrical storage component and the second electrical storage component are coupled in parallel.

Optionally, in one embodiment of this application:

The one or more switch units include a first single-pole double-throw switch and a second single-pole double-throw (also known as: single-pole double-throw) switch;

In the high-level mode, the first single-pole double-throw switch and the second single-pole double-throw switch are both in the first switch position, thereby connecting the anode of the first power storage component to the cathode of the second power storage component; as well as

In low level mode:

The first single-pole double-throw switch is in the second switch position, thereby connecting the cathode of the first electrical storage component to the cathode of the second electrical storage component; and

The second single-pole double-throw switch is in the second switch position, thereby connecting the anode of the first electrical storage component to the anode of the second electrical storage component.

Optionally, in one embodiment of this application:

The one or more switch units include two single-pole single-throw switches;

In high level mode:

The first of the two single-pole single-throw switches is in the open position, and

a second of the two single-pole single-throw switches in an engaged energized position thereby connecting the anode of the first electrical storage component to the cathode of the second electrical storage component; and

In low level mode:

a first of the two single-pole single-throw switches is in an engaged energized position, thereby connecting the cathode of the first electrical storage component to the cathode of the second electrical storage component, and

The second of the two single-pole single-throw switches is in the open position.

Optionally, in one embodiment of the present application, the energy storage device further includes at least one charging unit switch, and the at least one charging unit switch is configured to connect the first power storage component and the second power storage component to the charging port. unit and disconnected from the charging unit.

Optionally, in the lamp according to an embodiment of the present application, in the high-level mode:

The anode of the light source panel is connected to the anode of the first power storage component; and

The cathode of the light source plate is connected to the cathode of the first power storage component.

Optionally, in one embodiment of the present application, the energy storage device further includes at least one load switch, and the at least one load switch includes at least two or more poles, wherein in the high-level mode middle:

When the at least one load switch is set to one or more first switching positions:

The anode of the light source panel is connected to the anode of the first power storage component, and

The cathode of the light source panel is connected to the cathode of the first power storage component; and when the at least one load switch is set to one or more second switch positions:

The anode of the light source panel is connected to the anode of the second power storage component, and

Optionally, in one embodiment of the present application, a control circuit is further included, and the control circuit is configured to, when in the high-level mode, operate according to at least one of the first power storage component and the second power storage component. Status parameter to set the position of the at least one load switch.

Optionally, in one embodiment of this application:

In the high level mode, the energy storage device is configured to receive a charging voltage above 220 volts or above 240 volts and above 800 volts.

Optionally, in one embodiment of the present application, in the charging configuration, the energy storage device is configured to provide a voltage of 48 volts or more than 36 volts to the fire emergency lighting fixture or the light source panel.

Optionally, the lamp according to an embodiment of the present application further includes an energy storage control unit configured to select between a low-level mode and a high-level mode.

In corresponding embodiments, according to changes in the external power supply voltage, the electrical connection relationship between the energy storage device and the external power supply is dynamically adjusted, and/or the electrical connection between the energy storage device and the light source panel is dynamically adjusted. Connected relationships. Therefore, through the central energy storage device, a stable feed channel is established between the external battery and other power sources and the light source panel, thereby making the optical power of the light source panel in the fire emergency lighting fixture basically constant.

For example, in some embodiments, a) the electrical connection relationship between the energy storage device and the light source board is dynamically switched between series and parallel connection through the coordinated work of the switch unit, or b) the entire energy storage device and the external power supply. The electrical connection relationship is dynamically switched between series and parallel connection through the coordinated work of the switch unit, which enables the feed channel of "external power supply → energy storage device", and/or, the feed of "energy storage device → light source board" The channel can dynamically adapt to the voltage changes of the external power supply, so that the power obtained by the terminal's light source board remains stable.

Optionally, the lamps of some embodiments can also be connected to a voltage stabilizing circuit at the output end, thereby further providing more stable electrical energy, such as voltage, to external lamps.

Therefore, in the emergency lighting fixture in some embodiments of the present application, a voltage stabilizing circuit is also proposed, including:

a linear DC voltage stabilizing unit configured to receive an input voltage through an input terminal of a transistor and to provide a regulated output voltage at an output terminal of said transistor;

A DC-to-DC converter configured to output a DC-to-DC converter voltage that supplies power to the drive circuit of the linear DC voltage stabilizing unit;

A DC-DC converter control circuit configured to control the DC-DC converter such that the DC-DC converter voltage (i) is greater than the input voltage and (ii) does not exceed a high voltage threshold ;and

An undervoltage lockout unit is an undervoltage lockout unit that is set to operate once the DC-to-DC converter voltage (i) is greater than the minimum voltage for operation of the linear DC voltage stabilizing unit and ( ii) When the voltage is greater than the regulated output voltage, the linear DC voltage stabilizing unit is enabled.

Optionally, in the above voltage stabilizing circuit, the transistor is an N-channel MOSFET controlled by the driving circuit; the linear DC voltage stabilizing unit is a low dropout voltage regulator.

Optionally, the above voltage stabilizing circuit, wherein:

The minimum voltage corresponds to the potential difference between the gate terminal and the source terminal of the N-channel MOSFET to provide a non-zero output current to the output terminal of the linear DC voltage stabilizing unit; and

The high voltage threshold corresponds to the safe operating area of the N-channel MOSFET.

Optionally, in the above voltage stabilizing circuit, the DC-to-DC converter is a symmetrical cross-coupled symmetrical DC-to-DC converter.

Optionally, in the above voltage stabilizing circuit, the DC-DC converter voltage corresponds to the frequency of the clock signal from the DC-DC converter control circuit.

Optionally, the above-mentioned voltage stabilizing circuit, wherein the frequency of the clock signal is controlled by a voltage-controlled oscillator driven by a differential amplification unit of the control circuit of the direct-to-DC converter; and

The differential amplification unit is a four-input operational amplifier. Once the DC-DC converter voltage is less than the high voltage threshold, the output of the four-input operational amplifier is relatively higher than the input voltage by a predetermined value and fluctuates. Voltage, the predetermined value is determined by the operating characteristics of the transistor of the linear DC voltage stabilizing unit.

Description of drawings

Figure 1 is a perspective view of the first embodiment.

Figure 2 is an exploded perspective view of the first embodiment.

FIG. 3 is an enlarged cross-sectional view along line A-A of FIG. 1 .

Figure 4 is a perspective view of the second embodiment.

Figure 5 is an exploded perspective view of the second embodiment.

FIG. 6 is an enlarged cross-sectional view taken along line B-B of FIG. 4 .

Figure 7 is a perspective view of the third embodiment.

Figure 8 is an exploded perspective view of the third embodiment.

FIG. 9 is an enlarged cross-sectional view taken along C-C of FIG. 7 .

Figure 10 shows a schematic diagram of a feed topology according to an embodiment of the present invention;

Figure 11 is an exploded perspective view of the fourth embodiment.

FIG. 12 is a partial enlarged view of A-A in FIG. 11 .

FIG. 13 is an enlarged cross-sectional view of the B-B section of the embodiment of FIG. 11 after assembly.

Figure 14 is an exploded perspective view of the fifth embodiment.

FIG. 15 is a partial enlarged view of C-C in FIG. 14 .

FIG. 16 is an enlarged cross-sectional view D-D of the embodiment of FIG. 14 after assembly.

Figure 17 is a structural block diagram of a voltage stabilizing circuit at the input end of a lamp according to an embodiment of the present invention.

In Embodiments 1 to 3, the following reference signs are used: 1-case; 11-first case; 12-second case; 13-marking hole; 14-support; 15-battery position; 2 -Light guide plate; 3-circuit board; 31-LED light source; 32-components; 4-light-emitting position; 5-board position; 6-edge; 7-battery.

In Embodiments 4 to 5, the following reference signs are used: 1-casing; 11-marking hole; 12-light-emitting position; 13-board placement position; 2-light guide plate; 3-light source plate; 31-LED light source ; 4-Light entrance end; 41-Light entrance surface, 42-Extension end; 5-Light-emitting end; 6-Bevel.

Detailed ways

The technical solution of the present invention will be further described below with reference to specific embodiments 1-3.

Embodiment 1

As shown in Figures 1, 2, and 3, an ultra-thin sign light includes a housing 1, a light guide plate 2 and a circuit board 3 arranged in the housing 1. The housing 1 is provided with a light-emitting position 4 and the board placing position 5, the light guide plate 2 is arranged in the light-emitting position 4, the circuit board 3 is arranged in the board placing position 5, the cross-sectional width of the light-emitting position 4 and the housing 1 is smaller than the The width of the board placement position 5 and the housing 1, the cross-sectional width of the light-emitting position 4 and the housing 1, and the thickness of the light guide plate 2 are matched. The board placement position 5 is set at the edge of the light-emitting position 4, and the circuit board 3 is set at the edge of the light guide plate 2. The circuit board 3 is provided with an LED light source 31. The light guide plate 2 is optically connected to the LED light source 31.

The housing 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are provided with a marking hole 13, and the position of the marking hole 13 is consistent with the light-emitting position 4. The light guide plate 2 is placed at the light-emitting position 4, and the circuit board 3 is placed at the board position 5. The light-emitting position 4 matches the cross-sectional width of the housing 1 and the thickness of the light guide plate 2. The thickness is no longer related to the thickness of the light guide plate 2. While a thicker circuit board 3 can be installed, even a thinner light guide plate 2 can be installed in the housing 1, which can greatly improve the installation diversity of the light guide plate 2. And effectively save product costs.

Embodiment 2

As shown in Figures 4, 5, and 6, an ultra-thin sign light includes a housing 1, a light guide plate 2 and a circuit board 3 arranged in the housing 1. The housing 1 is provided with a light-emitting position 4 and the board placing position 5, the light guide plate 2 is arranged in the lighting position 4, the circuit board 3 is arranged in the board placing position 5, the cross-sectional width of the lighting position 4 and the housing 1 is smaller than the The board placement position 5 matches the width of the casing 1, the light-emitting position 4 matches the cross-sectional width of the casing 1 and the thickness of the light guide plate 2. The casing 1 is provided with an inwardly recessed support 14, The support 14 is arranged in the light-emitting position 4. The cross-sectional width between the support 14 and the housing 1 is smaller than the width of the plate placement position 5. The light guide plate 1 is tightly connected through the support 14. Close to the front housing 1, the board placement position 5 is set in the middle of the light-emitting position 4, the circuit board is set in the middle of the light guide plate, the circuit board 3 is provided with an LED light source 31, the light guide plate 2 It is optically connected to the LED light source 31 .

The housing 1 is provided with a battery 7, and the housing 1 is provided with a battery position 15. The cross-sectional width of the housing 1 and the battery position 15 is greater than the cross-sectional width of the housing 1 and the light-emitting position 4, The battery 7 is arranged in the battery position 15 .

The housing 1 includes a first housing 11 and a second housing 12. The first housing 11 is provided with a marking hole 13. The position of the marking hole 13 matches the position of the light-emitting position 4. The light guide plate 2 is placed at the light-emitting position 4, and the circuit board 3 is placed at the board position 5. The light-emitting position 4 matches the cross-sectional width of the housing 1 and the thickness of the light guide plate 2. The thickness of the housing 1 is consistent with the thickness of the light guide plate 2. Thickness is no longer relevant. While a thicker circuit board 3 can be installed, even a thinner light guide plate 2 can be installed in the housing 1, which can greatly improve the installation diversity of the light guide plate 2 and effectively save product costs.

Embodiment 3

As shown in Figures 7, 8, and 9, an ultra-thin sign light includes a housing 1, a light guide plate 2 and a circuit board 3 arranged in the housing 1. The housing 1 is provided with a light-emitting position 4 and the board placing position 5, the light guide plate 2 is arranged in the lighting position 4, the circuit board 3 is arranged in the board placing position 5, the cross-sectional width of the lighting position 4 and the housing 1 is smaller than the The board placing position 5 is adapted to the width of the casing 1, the cross-sectional width of the luminous position 4 and the casing 1, and the thickness of the light guide plate 2. The board placing position 5 is arranged in the middle of the luminous position 4, The circuit board is arranged in the middle of the light guide plate. An LED light source 31 is provided on the circuit board 3 . The light guide plate 2 is optically connected to the LED light source 31 .

The housing 1 includes a first housing 11 and a second housing 12. Both the first housing 11 and the second housing 12 are provided with a marking hole 13. The position of the marking hole 13 is consistent with the position of the marking hole 13. Match the position of the light-emitting position 4, place the light guide plate 2 through the light-emitting position 4, and place the plate position 5. Place the circuit board 3. The light-emitting position 4 matches the cross-sectional width of the housing 1 and the thickness of the light guide plate 2. The thickness of the housing 1 is no longer related to the thickness of the light guide plate 2. Thicker circuit boards can be installed. 3, even a thinner light guide plate 2 can be installed in the housing 1, which can greatly improve the installation diversity of the light guide plate 2 and effectively save product costs.

The peripheral edge of the housing 1 is an edge portion 6. The cross-sectional width of the edge portion 6 is greater than the cross-sectional width of the light-emitting position 4 and the housing 1. The edge portion 6 surrounds the light-emitting position 4. Most of the existing housings 1 are assembled through buckling. The edge portion 6 can ensure that there is enough space on the side of the housing 1 to install a buckling mechanism, making the assembly of the lamp more convenient. It should be noted that the buckling is not the shell. The only way to assemble the body 1 is to assemble the shell 1 using glue or fixing with screws. When using glue or fixing with screws, the shell 1 does not need to be provided with the edge portion 6 .

The circuit board 3 is provided with components 32, and the components 32 are arranged in the board placement position 5; it should be noted that due to the electronic component manufacturing technology, the overall thickness of the circuit board 3 is determined by the thickness of the components 32. It is decided that the size of the LED light source 31 on the circuit board 3 can be extremely small according to the current production process of the LED light source 31. Therefore, when the circuit board 3 is equipped with the LED light source 31, it is set at the light-emitting position 4 and This structure can also be used when the part connected to the light guide plate 2 and provided with the components 32 is placed in the board placement position 5, and it should be within the protection scope of the present invention.

The technical solution of the present invention will be further described below with reference to specific embodiments 4-5.

Embodiment 4

As shown in Figures 11, 12, and 13, a sign light light guide plate structure includes a housing 1, a light guide plate 2 and a light source plate 3 arranged in the housing 1. The light guide plate 2 is provided with a light inlet end. 4 and the light-emitting end 5. The thickness of the light-input end 4 is greater than the thickness of the light-emitting end 5. The light source plate 3 is provided with an LED light source 31, and the light of the LED light source 31 is transmitted to the light-emitting end 4 through the light-input end 4. End 5, the light entrance end 4 includes a light entrance surface 41, the light entrance surface 41 is facing the LED light source 31, the light of the LED light source 31 is transmitted to the light emitting end 5 through the light entrance end 4, and the light entrance end 4 is partially enlarged. The area of the light end 4 enables the light of the LED light source 31 to be more fully utilized, and the thickness of the light emitting end 5 is no longer limited by the size of the LED light source 31 and can be set thinner, thereby saving the material of the light guide plate 2, making the The thickness of the product is orderly, more coordinated and beautiful, and has the beauty of craftsmanship design. It should be noted that the length of the light entrance surface 41 can be set according to the position of the LED light source 31, the illumination angle and the brightness requirements of the light guide plate 2. The thickness of the light entrance surface 41 is equal to the thickness of the light entrance end 4, and the thickness is low. The portion on the light entrance surface 41 is set as the light emitting end 5 .

The housing 1 is provided with a marking hole 11. The position of the light-emitting end 5 matches the position of the marking hole 11 and is displayed to the outside through the marking hole 11. The light-incoming end 4 is arranged outside the marking hole 11. , which can prevent the light entrance end 4 from affecting the luminous effect of the sign light. The light-emitting end 5 is displayed to the outside through the sign hole 11, which means that the light from the light-emitting end 5 is displayed to the outside through the sign hole 11. For example, if there is light-transmitting paper, light-transmitting plastic and other light-transmitting materials between the light-emitting end 5 and the sign hole 11, it belongs to within the scope of external display.

The thickness of the light entrance end 4 is greater than the thickness of the LED light source 31, and the thickness of the light entrance end 4 is adapted to the thickness of the housing 1. When the housing 1 is stressed, the light entrance end 4 can Support the housing 1 to prevent the housing 1 from contacting the LED light source 31 and causing damage to the LED light source 31.

One side of the light guide plate 2 extends upward to form a light-input end 4. The light-input end 4 is provided with a slope 6 connected to the light-emitting end 5. The other side is a flat surface. The slope 6 can better allow light to enter the light-emitting end 4 from the light-input end 4. End 5, the light effect can be fully utilized.

The light-input end 4 is arranged at the edge of the light-emitting end 5 , and the LED light source 31 is arranged at the edge of the light guide plate 2 . It should be noted that the edge of the light guide plate 2 generally guides the up, down, left, and right directions of the light guide plate 2 . , does not only refer to the lower edge as shown in the attached picture.

The light entrance end 4 is provided with a recessed light entrance position. The light entrance position can be recessed to form a shape matching the LED light source 31, or can be formed into a zigzag shape. The purpose is to bend the light of the LED light source 31. Refraction, improve light utilization.

The housing 1 is provided with a light-emitting position 12 and a board-placement position 13. The light-emitting end 5 is arranged in the light-emitting position 13. The light source plate 3 and the light-input end 4 are arranged in the board-placement position 13. , the cross-sectional width of the light-emitting position 12 and the housing 1 is smaller than the width of the board placement position 13 and the housing 1, and the cross-sectional width of the light-emitting position 12 and the housing 1 matches the thickness of the light-emitting end 5 .

Embodiment 5

As shown in Figures 14, 15, and 16, a sign light light guide plate structure includes a housing 1, a light guide plate 2 and a light source plate 3 arranged in the housing 1. The light guide plate 2 is provided with a light inlet end. 4 and the light-emitting end 5. The thickness of the light-input end 4 is greater than the thickness of the light-emitting end 5. The light source plate 3 is provided with an LED light source 31, and the light of the LED light source 31 is transmitted to the light-emitting end 4 through the light-input end 4. End 5. The light entrance end 4 includes a light entrance surface 41. The light entrance surface 41 is facing the LED light source 31. The light of the LED light source 31 is transmitted to the light emitting end 5 through the light entrance end 4. The area of the light end 4 enables the light of the LED light source 31 to be more fully utilized, and the thickness of the light emitting end 5 is no longer limited by the size of the LED light source 31 and can be set thinner, thereby saving the material of the light guide plate 2, making the The thickness of the product is orderly, more coordinated and beautiful, and has the beauty of craftsmanship design. It should be noted that the length of the light entrance surface 41 can be set according to the position of the LED light source 31, the illumination angle and the brightness requirements of the light guide plate 2. The thickness of the light entrance surface 41 is equal to the thickness of the light entrance end 4, and the thickness is low. The portion on the light entrance surface 41 is set as the light emitting end 5 .

Both sides of the light guide plate 2 extend outward to form a light entrance end 4, and are provided with a slope 6 connected to the light emitting end 5. The light entrance end 4 includes a light entrance surface 41, and the light entrance surface 41 faces the light emitting end 5. direction extends to form an extension end 42. The extension end 42 and the light-emitting end 5 are connected by a slope 6. The light enters the light guide plate 2 through the light entrance surface 41 and is converged by the extension end 42 and then enters the light-emitting end 5 through the slope 6. The slope 6 and the extension end 42 can make the light enter the light-emitting end 5 from the light-input end 4 better, and the light efficiency can be fully utilized.

The light source plate 3 is arranged in the middle of the light guide plate 2, and the light guide plate 2 is provided with a light inlet at the position facing the LED light source 31. End 4, the light guide plate 2 is divided into two or more independent light-emitting groups. The light-emitting groups are optically isolated from each other and can emit light independently. The light-emitting groups are equipped with a light inlet end 4, a light emitting end 5 and an LED light source 31. .

The lamp in some embodiments of the present application includes a power storage component connected to the power input end of the lamp.

Figure 10 shows a macro schematic diagram of the electrical connection topology C311 between the electrical storage components and the light source board of the electrical storage components 210 and 211, electrical components and sub-assemblies according to some embodiments of the present application. Each of the power storage components 210 and 211 includes a connection terminal anode and a connection terminal cathode. For example, the power storage component 210 has a connection terminal anode connected to the bus bar 234 and a connection terminal cathode connected to the bus bar B341. In addition, the power storage component 211 has a connection terminal anode connected to the bus bar B343 and a connection terminal cathode connected to the switch ONOFF361.

As shown in Figure 10, switches ONOFF361, ONOFF362, ONOFF365, and ONOFF367 are single-pole double-throw (unipolar double-throw). For example, any or all of switches ONOFF361, ONOFF362, ONOFF365 and ONOFF367 may be of the "ON-ON" or "ON-OFF-ON" type of single pole double throw switches. Any or all of switches ONOFF361, ONOFF362, ONOFF365 and ONOFF367 may include one or more contactors, relays, transistors. For example, switches ONOFF361, ONOFF362, ONOFF365 and ONOFF367 can all be single-pole double-throw contactors. In another embodiment, switches ONOFF 361 , ONOFF 362 , ONOFF 365 and ONOFF 367 may each include two SPST (single pole single throw) contacts suitably wired to achieve single pole double throw connectivity. As shown in Figure 10, switches ONOFF371 and ONOFF373 are both single-pole single-throw switches configured to connect and disconnect a corresponding connection end of the battery charging unit EU381 to and from buses B341 and B343. Either or both switches ONOFF 371 and ONOFF 373 may include contactors, relays, and transistors.

As shown in FIG. 10 , power storage components 210 and 211 are coupled in series. For example, switch ONOFF361 and switch ONOFF362 are configured to connect an anode of a connection terminal of the power storage component 210 to a cathode of a connection terminal of the power storage component 211 . The light source panel 31 of the emergency lighting fixture is shown connected to the power storage assembly 210 via switch ONOFF 367 and switch ONOFF 365 . As shown in FIG. 10 , the switch ONOFF367 connects the bus bar B341 to the cathode connection end of the light source board 31 , and the switch ONOFF365 connects the bus bar 234 to an anode connection end of the light source board 31 .

In some embodiments, the power storage assembly 210 may also be referred to as a battery unit, and may also include modules 313, 315, 317, and 319. In some embodiments, the power storage assembly 211 may also include sub-modules 203, 205, 207, and 209, which may also be referred to as battery cells. For example, electrical storage assembly 210 may be referred to as a "string of battery cells" (ie, series-coupled battery cells). The voltage of the power storage component 210 may be a combination of the battery cells 313, 315, 317, and 319. For example, as schematically shown in FIG. 10 , the voltage of the power storage component 210 is the sum of the voltages of each of the battery cells 313 , 315 , 317 and 319 . In another embodiment, a power storage component (eg, power storage component 210 or power storage component 211 ) may include one or more battery cells coupled in parallel (eg, to increase the current capacity of the power storage component). For clarity, the present application is described in terms of electrical storage components.

For simplicity, topology C311 illustrates two power storage components, but more than two power storage components may be managed according to the present application. For example, three power storage components each operating at 220V may be connected using a switch configuration in parallel (eg, charging at 110V) or in series (eg, charging at 220, 240 volts). In another embodiment, three power storage assemblies each operating at 220 volts may be configured in parallel (i.e., in parallel) (eg, charged at 220 volts), or two of the three may be configured in parallel and then in series with a third (for example, charging at 220V, 240 volts). Any suitable number of electrical storage components may be managed in accordance with the present application (eg, coupled in series or parallel with a switching configuration). It will be understood that an electrical storage assembly may include one or more sub-modules (eg, individual sub-modules that may be coupled together to form a module).

FIG. 17 shows a structural block diagram of the voltage stabilizing circuit 555 according to an embodiment of the present application. Circuit 555 can be configured to operate in a luminaire The corresponding power input terminals accept the input voltage (VIN) and the ground voltage (GND). Circuit 555 may be configured to transmit (eg, output) an output voltage (VOUT) at the output. The output voltage is regulated so that fluctuations (for example, fluctuations) in the input voltage are not reflected in the output voltage. The output voltage is lower than the input voltage by a voltage drop.

The circuit 555 includes a linear DC voltage stabilizing unit (for example, a linear DC voltage stabilizing unit) 110, which is configured to regulate the output voltage (VOUT) within a small voltage difference (for example, VD0 is less than or equal to 100mV). Less than the input voltage (VjN) o the power dissipated by the linear DC voltage stabilizing unit 666 during the regulation period. The power dissipated is proportional to the voltage drop (VDO). Therefore, reducing VDO reduces regulation losses and reduces thermal requirements.

A block diagram of the linear DC regulator unit 666 is shown in FIG. 17 . Linear DC voltage stabilizing unit 666 includes transistor 111 . Transistor 111 may be implemented using a variety of transistor types such as BJT, MOSFET, JFET, etc. For example, transistor 111 may be an N-channel MOSFET or a P-channel MOSFET. In fact, channel MOSFET linear DC regulator units offer advantages over other types of transistors. For example, a channel MOSFET linear DC voltage regulator unit can provide a lower dropout voltage (for example: VDO) than a P-channel MOSFET linear DC voltage regulator unit.

Regulation may be achieved by controlling the voltage drop across transistor 111 . For example, the voltage drop between the drain terminal (D) 112 and the source terminal ⑸113 of the channel MOSFET can be adjusted by the voltage applied to the gate terminal (G) 114 of the N-channel MOSFET.

The linear DC voltage stabilizing unit 666 includes a driver circuit (eg, a driver circuit) 115 to provide a voltage at the gate terminal 114 of the transistor 111 . The driver circuit 115 may be configured to accept the output voltage (VOUT) via a feedback loop (also referred to as a feedback loop) 116 formed between the driver circuit 115 and the transistor 111 . The drive circuit 115 may also be configured to accept a reference voltage (VREF). Once enabled, the driver circuit can be used as a differential amplification unit with an output voltage (VG) based on the difference between the reference voltage and the output voltage (eg, Vref-Vout). The output voltage VG of the driver circuit may be applied to the gate 114 of the transistor 111 to control the operating point of the transistor (eg, its conduction, its voltage drop (VDO), etc.).

The driver circuit 115 is powered by a high voltage (VCHP) (eg, high rail) and a low voltage (GND) (eg, low rail) for operation. The low voltage (GND) of the driver circuit can also be the reference voltage of VIN. In other words, the linear DC regulator unit and the input voltage share the same voltage range. To provide adequate control of transistor 111, VCHp may be greater than the input voltage VIN. For example, when the input voltage VIN is 1 volt (for example: at the drain terminal 112) and the voltage difference is 0.1V (ie, VIN=1V, VDO=0.1V), then the output port of the transistor device (for example: the source terminal 113 The voltage at ) can be 0.9V (for example: Vout=0.9V). To cause the transistor device 111 to conduct (eg, operate in a conductive state), the voltage at the output port of the driver circuit 115 may be at least 0.9V plus the threshold voltage (VT) of the transistor device 111 . For a threshold voltage of 0.7V (for example: t=0.7), the driving circuit outputs a voltage of at least 1.6V (for example: Vg≥1.6V). Therefore, the driving circuit can be powered by a high voltage that enables the driving circuit to output at least 1.6V. Therefore, in the implementation of the linear DC voltage stabilizing unit 666, the high voltage provided to the driving circuit 115 is set to be greater than the input voltage (ie, Vchp>Vin). A high voltage (VCHP) that is set to a single value greater than all expected input voltages (VIN) may be inefficient (eg once VIN is low). The circuits and methods of the present application provide an upper limit (VCHP) based on the input voltage (VIN) in order to provide efficient operation.

The driver circuit 115 may be enabled for operation by the enable signal EN. The enable signal EN may be a digital signal whose low voltage disables the operation of the driving circuit 115 and whose high voltage enables the operation of the driving circuit 115 . In scenarios where the voltage drops below the desired target, the desired threshold, the enable signal may be used to turn off the linear DC regulator unit 666. This control may be used to protect (eg, equipment coupled to circuit 555). The circuit of the present application advantageously utilizes multiple criteria to determine the state of the enable signal EN.

Returning to FIG. 17 , the circuit 555 also includes a DC-DC converter 888 and a DC-DC converter control circuit 999 to generate the high voltage VchP, and an under-locking unit and an under-locking unit 120 to generate the enable signal EN.

An example of a DC-to-DC converter circuit is shown in Figure 17 . The exemplary DC-to-DC converter shown is provided to aid understanding and not as a limiting example of the present application. The disclosed circuits and methods may be used with other DC-DC converter types and architectures. In this application, a DC-DC converter circuit similar to that shown in Figure 17 is described. However, the DC-DC converter circuit includes input switches and output switches independently controlled by different clock signals as an alternative to coupling a storage capacitor to the input port and the output port. Customizable switching control allows the use of clock signals without overlapping transitions to improve switching efficiency. In addition, the input switch is controlled by a clock signal (clock signal) that is level-shifted with respect to the input voltage. Control of level-shift switching improves efficiency and allows a range of input voltages to be constructed for DC voltage conversion.

DC-to-DC converter 888 is a symmetric cross-coupled DC-to-DC converter that accepts input voltage VN and generates high voltage VCHP for powering circuit 555 (eg, drive circuit 115). The voltage is increased by charging and discharging the two capacitors C1 and C2 using a network of transistors that operate as switches controlled by a clock signal (CLK) and its inverse signal (CLK-i). For example, once CLK is high level and CLK-i is low level, the transistor M1 and the transistor M3 are in the on state, while the transistor M4 and the transistor M2 are in the off state. In this state, capacitor C1 is coupled to the input port and charged by VIN. Once CLK is low level and CLK-i is high level, the transistors M1 and M3 are in the off state, and the transistors M4 and M2 are in the on state. In this state, capacitor C1 is coupled to the output port. By charging and discharging the corresponding capacitors C1 and 2, VCHP is generated at a value greater than VIN. The exact upper limit depends on the clock signal (CLK, CLK-i). For example, the frequency of the clock signal may correspond to the voltage vchp at the output port of the DC-DC converter.

To control the DC-DC voltage VCHP, circuit 555 may include DC-DC control circuit 999 as shown in FIG. 17 . The DC-DC converter control circuit controls the DC-DC converter 888 based on the input voltage (VIN) present at the input port of the linear DC regulator unit 666 and based on feedback from the DC-DC converter to the input port of the DC-DC converter control circuit. DC-DC converter voltage to generate DC-DC converter voltage (VCHP). The amplitude of the generated DC-DC converter voltage (VCHP) is regulated to exceed the input voltage. The precise value of VCHP or the relationship between VCHP and VIN can be based on operation (eg, stability, efficiency) within the range of VIN (eg, 1.1V ~ 3.6V). In some embodiments, the charge pump control circuit 999 may also be configured to limit the DC-DC converter voltage (VCHP) to a high voltage threshold (VCHPMAX) to prevent damage (eg, as determined by the process safe operating area).

A structural block diagram of the DC-DC converter control circuit 999 is shown in FIG. 17 . The DC-DC control circuit 999 may be configured to generate/control the clock signal (CLK, CLK-i) of the DC-DC converter based on the accepted voltage (VjN, Vchp). For example, the amplitude of the clock signal (CLK, CLK-i) may be equal to the amplitude of the received input voltage. Alternatively, the frequency of the clock signal (CLK, CLK-i) can be proportionally adjusted based on the amplitude of the accepted input voltage (VIN). The dc-to-dc converter control circuit 999 may also be configured to limit regulation of the frequency of the clock signal to a maximum value to damage the dc-to-dc converter and/or to prevent the output of the dc-to-dc converter (VCHP) from damaging peripheral circuits.

As shown in FIG. 17 , the DC-DC converter control circuit may include a potential difference sensing module 141 . The potential difference sensing module is configured to generate a floating varying voltage level relative to VCHP. Therefore, the potential difference sensing module may include a voltage divider or voltage regulating device to set at least one voltage value relative to VIN and/or VCHP. This facilitates adapting the voltage levels of VIN and VCHP to other voltage ranges.

The DC-DC converter control circuit 999 also includes a differential amplification unit 142 arranged to perform one or more comparisons. The first comparison result 146 compares the relative amplitudes associated with VCHP and Vin. The second comparison result 147 compares the relative magnitude of VCHP to the voltage associated with the high voltage threshold for safety and proper functioning of the DC-DC converter. Differential amplifier 142 can respond to the comparison in different ways. For example, a second comparison result that determines that VCHP is equal to or greater than the high voltage threshold may cause the amplifier to ignore (eg, suppress) the result of the first comparison result. Once the second comparison determines that VCHP is less than the high voltage threshold, the output of the amplifier can be determined by the relationship between VCHP and VIN.

The differential amplification unit 142 drives a voltage controlled crystal oscillator (VCO) 143 . The VCO is configured to accept an input voltage and generate a crystal oscillator signal that has a frequency that is the same as the voltage at the input port of the vco (eg, vin-vchp). The direct-to-DC converter control circuit also includes a clock logic circuit 145 that receives an oscillation signal from the crystal oscillator and generates a corresponding digital clock signal (CLK) and a complementary clock signal (CLK-i). The clock signal controls the DC-to-DC converter 888 as previously described.

The DC-DC converter 888 and the DC-DC converter control circuit 999 may work together to generate a voltage (VCHP) that is higher than the input voltage (VIN) by a predetermined value (e.g., regardless of how VIN floats but is never greater than the high voltage threshold). (VCHPMAX). The high voltage threshold can be selected to correspond to the high voltage threshold rating of the device technology of the linear DC regulator unit.

As shown in FIG. 17 , circuit 555 may include undervoltage lockout unit (UVLO) circuit 777 . Generally speaking, UVLO circuit 777 (via enable signal EN) ceases operation once the DC-DC converter voltage (VCHP) is at or below the minimum voltage (VCHPMIN). In other words, a single criterion is used to determine whether to enable or disable driver circuit 115 . One advantageous aspect of the disclosed undervoltage lockout unit is that it can utilize multiple standards and logic to determine whether to enable or disable the drive circuit 115. For example, the UVLO circuit may additionally determine that the DC-DC converter voltage (VCHP) is greater than the output voltage of the linear DC regulator unit 666 by a predetermined amount, and then enable the operation of the driving circuit to ensure that the transistor 111 can be controlled.

A block diagram of an embodiment of undervoltage lockout unit 777 is shown in FIG. 17 . The undervoltage lockout unit receives the DC-DC converter voltage (VCHP) and outputs an enable signal (EN). The enable signal can be a digital signal EN, which can enable/disable based on its high/low level state. The operation of the drive circuit 115 of the linear DC voltage stabilizing unit 666 is disabled. Voltage underlock unit 777 includes a potential difference sensing module that accepts, creates and/or manipulates voltages for comparison. Accordingly, voltage sensing 121 may include circuits such as voltage sources, voltage reference sources, voltage regulators, etc., to output a voltage level relative to another voltage level (eg, VCHP) and to output a voltage relative to ground voltage. The undervoltage lockout unit can deliver an output voltage to the comparison stage circuit for comparison. Accordingly, comparator 123 may include a first circuit for determining relative voltage states. For example, a comparator may be used to indicate that the first voltage is greater than the second voltage. Compare output 123 one or more signals indicating the result of the voltage level comparison. The undervoltage lockout unit also includes logic level circuitry. Logic circuit 125 may include one or more logic gates, such as inverters, AND, OR, XOR, etc., which may generate enable signals (EN) based on logical operations applied to one or more results of comparison 123 ). Therefore, the status of the high and low ratings of the enable signal may be determined based on at least one criterion. To avoid confusion, it can be understood that other enable signals may also control the voltage stabilizing circuit. An externally applied enable (EN) signal can be used to control the overall operation of the voltage regulator circuit. The enable signal (EN) mentioned in this application is a signal generated within the voltage stabilizing circuit and used to control the driving circuit.

[Alternative embodiment]:

Example

1. A sign light light guide plate structure, which is characterized in that it includes:

case,

A light guide plate and a light source plate are arranged in the housing;

The light guide plate is provided with a light-input end and a light-emitting end. The thickness of the light-input end is greater than the thickness of the light-emitting end. The light source plate is provided with an LED light source, the light of which can be transmitted to the light-emitting end through the light inlet end. end.

2. The sign light light guide plate structure according to Embodiment 1, characterized in that: the housing is provided with a sign hole, the position of the light-emitting end matches the position of the sign hole, and is displayed to the outside through the sign hole. , the light entrance end is arranged outside the sign hole;

A light-transmitting material is provided between the light-emitting end and the sign hole, and the light-transmitting material includes light-transmitting paper or light-transmitting plastic.

3. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light entrance end includes a light entrance surface, and the light entrance surface faces the LED light source.

4. The sign light light guide plate structure according to Embodiment 1, characterized in that: the thickness of the light entrance end is greater than the thickness of the LED light source.

5. A sign light light guide plate structure according to Embodiment 1, characterized in that: the thickness of the light entrance end matches the thickness of the housing.

6. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light inlet end and the light emitting end are connected through a slope.

7. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light inlet end includes a light inlet surface, and the light inlet surface extends in the direction of the light emitting end to form an extension end, and the extension end is connected to the light emitting end. The ends are connected by bevels.

8. The sign light light guide plate structure according to Embodiment 1, characterized in that: one side of the light guide plate extends upward to form a light inlet end, the light inlet end is provided with a slope connected to the light emitting end, and the other side is flat.

9. The sign light light guide plate structure according to Embodiment 1, characterized in that: both surfaces of the light guide plate extend outward to form a light inlet end, and are provided with a bevel to connect the light emitting end.

10. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light inlet end is arranged at the edge of the light emitting end, and the LED light source is arranged at the edge of the light guide plate.

11. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light source plate is arranged in the middle of the light guide plate, and the light guide plate is provided with a light entrance end at a position facing the LED light source.

12. The sign light light guide plate structure according to Embodiment 1, characterized in that: the light entrance end is provided with a recessed light entrance position.

13. The sign light light guide plate structure according to Embodiment 1, characterized in that: a light-emitting position and a board placement position are provided in the housing, the light-emitting end is arranged in the light-emitting position, the light source plate and the inlet The optical end is arranged in the board placing position, and the cross-sectional width of the light-emitting position and the housing is smaller than the width of the board placing position and the housing.

14. The sign light light guide plate structure according to Embodiment 13, wherein the light-emitting position is adapted to the cross-sectional width of the housing and the thickness of the light-emitting end.

15. An ultra-thin sign light, characterized in that it includes a casing, a light guide plate and a circuit board arranged in the casing. There is a light-emitting position and a board-placement position, the light guide plate is arranged in the light-emitting position, the circuit board is arranged in the board-placement position, and the cross-sectional width of the light-emitting position and the housing is smaller than the board-placement position. and the width of the casing.

16. An ultra-thin sign light according to Embodiment 15, characterized in that the luminous position is adapted to the cross-sectional width of the housing and the thickness of the light guide plate.

17. An ultra-thin sign light according to Embodiment 15, characterized in that: the housing is provided with an inwardly recessed support, the support is arranged in the light-emitting position, and the support is connected to the light-emitting position. The cross-sectional width between the shells is smaller than the width of the plate placement position.

18. An ultra-thin sign lamp according to Embodiment 15, characterized in that: the board placing position is arranged at the edge of the light-emitting position, and the circuit board is arranged at the edge of the light guide plate.

19. An ultra-thin sign lamp according to Embodiment 15, characterized in that: the board placing position is arranged in the middle of the light-emitting position, and the circuit board is arranged in the middle of the light guide plate.

20. An ultra-thin sign lamp according to Embodiment 15, characterized in that: the circuit board is provided with an LED light source, and the light guide plate is optically connected to the LED light source.

21. An ultra-thin sign light according to Embodiment 15, characterized in that: the housing includes a first housing and a second housing, and the first housing and/or the second housing are provided with Marking hole, the position of the marking hole is adapted to the position of the light-emitting position.

22. An ultra-thin sign lamp according to Embodiment 20, characterized in that: the circuit board is provided with components, and the components are arranged in the board placement position.

23. An ultra-thin sign light according to Embodiment 15, characterized in that: a battery is provided in the housing, a battery position is provided in the housing, and the cross-sectional width of the battery position is greater than that of the light-emitting position. Cross-sectional width, the battery is arranged in the battery position.

24. An ultra-thin sign light according to Embodiment 15, characterized in that: the peripheral edges of the housing are edge portions, and the cross-sectional width of the edge portion is greater than the cross-sectional width of the light-emitting position and the housing. , the edge portion surrounds the light-emitting position.

Each embodiment in this specification is described in a progressive manner. The same and similar parts between various embodiments can be referred to each other. Each optional technical feature can be combined with other embodiments in any reasonable manner. , any reasonable combination of content between various embodiments and under each title can also occur. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For relevant details, please refer to the partial description of the method embodiment.

The terminology used in the embodiments of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application. As used in the embodiments and the appended claims, the singular forms "a", "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. Usually contains at least two kinds. It should be understood that the term "and/or" used in this article is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and A exist simultaneously. B, there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

Although specific embodiments of the present application have been described above, those skilled in the art will understand that these are only examples, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

A sign light light guide plate structure, which is characterized by including:

case,

A light guide plate and a light source plate are arranged in the housing;

The light guide plate is provided with a light-input end and a light-emitting end. The thickness of the light-input end is greater than the thickness of the light-emitting end. The light source plate is provided with an LED light source, the light of which can be transmitted to the light-emitting end through the light inlet end. end.
The sign light light guide plate structure according to claim 1, characterized in that: the housing is provided with a sign hole, the position of the light-emitting end matches the position of the sign hole, and is displayed to the outside through the sign hole. The light entrance end is arranged outside the sign hole;

A light-transmitting material is provided between the light-emitting end and the sign hole, and the light-transmitting material includes light-transmitting paper or light-transmitting plastic.
The sign light light guide plate structure according to claim 1, wherein the light entrance end includes a light entrance surface, and the light entrance surface faces the LED light source.
The sign light light guide plate structure according to claim 1, wherein the thickness of the light entrance end is greater than the thickness of the LED light source.
A sign light light guide plate structure according to claim 1, characterized in that: the thickness of the light inlet end matches the thickness of the housing.
The sign light light guide plate structure according to claim 1, characterized in that: the light inlet end and the light emitting end are connected through a slope.
The sign light light guide plate structure according to claim 1, characterized in that: the light inlet end includes a light inlet surface, and the light inlet surface extends in the direction of the light emitting end to form an extension end, and the distance between the extension end and the light emitting end is are connected by an inclined plane.
The sign light light guide plate structure according to claim 1, characterized in that: one side of the light guide plate extends upward to form a light inlet end, the light inlet end is provided with a slope connected to the light emitting end, and the other side is flat.
The sign light light guide plate structure according to claim 1, characterized in that both surfaces of the light guide plate extend outward to form light inlet ends, and are provided with inclined surfaces to connect the light emitting ends.
The sign light light guide plate structure according to claim 1, characterized in that: the light inlet end is arranged at the edge of the light emitting end, and the LED light source is arranged at the edge of the light guide plate.
The sign light light guide plate structure according to claim 1, characterized in that: the light source plate is arranged in the middle of the light guide plate, and the light guide plate is provided with a light inlet end at a position facing the LED light source.
The sign light light guide plate structure according to claim 1, wherein the light entrance end is provided with a recessed light entrance position.
The sign light light guide plate structure according to claim 1, characterized in that: a light-emitting position and a board placing position are provided in the housing, the light-emitting end is arranged in the light-emitting position, the light source plate and the light inlet end It is arranged in the board placing position, and the cross-sectional width of the light-emitting position and the housing is smaller than the width of the board placing position and the housing.
The sign light light guide plate structure according to claim 13, wherein the light-emitting position is adapted to the cross-sectional width of the housing and the thickness of the light-emitting end.