Luminous device

Abstract

A light-emitting device includes a flexible circuit board, a battery, a plurality of predetermined color light-emitting diodes, a sensor, and a control chip. The battery, the plurality of predetermined color light-emitting diodes, the sensor, and the control chip are all mounted on the flexible circuit board. The sensor detects an external force to generate a control signal. The control chip is connected to the sensor, the plurality of predetermined color light-emitting diodes, and the battery. Based on the control signal, the control chip uses power supplied by the battery to drive the plurality of predetermined color light-emitting diodes to emit light. This light-emitting device utilizes a flexible circuit board to sense external force or vibration to emit light, eliminating the need for external wiring, reducing the overall size, and allowing it to be mounted on detachable objects and arbitrarily attached to wearable devices.

Description

[Technical Field]

[0001] This invention relates to a light-emitting device, and more particularly to a light-emitting device that integrates a predetermined color light-emitting diode, a sensor, and a chip onto a flexible circuit board. [Previous Technology]

[0002] With the continuous development of technology, people's demand for wearable devices is also increasing. Wearable devices not only provide practical functions, but sometimes they can also become accessories with decorative effects. For example, in recent years, light-emitting devices have been set in shoes, so that shoes can not only be used to alert passersby, but also serve as decorations.

[0003] However, in conventional shoes with light-emitting functions, the light-emitting device is usually designed using a rigid circuit board. The battery and controller are placed on the rigid circuit board, and the predetermined color light-emitting diode (such as an LED chip) is connected to the rigid circuit board using wires. The rigid circuit board needs to be encapsulated, so it is usually designed to be placed in the sole of the shoe, but this also increases the weight of the shoe, takes up space, and is inconvenient to install. Once the conventional rigid circuit board is installed in the shoe, it is impossible to update to a new light-emitting mode or make any adjustments.

[0004] Conventional designs using rigid circuit boards require additional external wiring to electrically connect multiple predetermined color light-emitting diodes to the rigid circuit board. However, the more light-emitting devices or multiple light-emitting modes are needed, the more external wiring is required to meet the design requirements; furthermore, the required wire lengths vary depending on the placement of the predetermined color light-emitting diodes. All of these factors not only cause inconvenience in production and installation but also significantly increase the weight of the shoes, potentially affecting their comfort and appearance.

[0005] Furthermore, in conventional shoes with light-emitting functions, different predetermined color light-emitting diodes are usually used simultaneously to emit different colors of light. For example, light-emitting elements that emit red, yellow, yellow-green, and orange light (e.g., red LED chips, yellow LED chips, and orange LED chips) require lower driving voltages or operating voltages Vf (e.g., 1.8~2.4V); conversely, light-emitting elements that emit blue light (e.g., blue LED chips) require higher driving voltages or operating voltages Vf (e.g., 3V). When the red light-emitting element of the shoe emits light, the light-emitting device needs to output the driving voltage value required for the red light-emitting element. However, when switching to the blue light-emitting element, the light-emitting device needs to provide a higher voltage to drive the blue LED chip, thus causing complexity in the power supply circuit design. On the other hand, when the red LED chip with a low Vf voltage is lit, it pulls the battery voltage circuit down to the low Vf voltage of the red LED chip. When the blue LED chip with a high Vf voltage needs to be lit, the battery voltage circuit has not yet recovered to a sufficient voltage. Therefore, high-Vf voltage blue LED chips will not light up, resulting in insufficient lifespan.

[0006] Therefore, it is necessary to provide a light-emitting device that can effectively simplify and lighten the circuit board and is easy to replace in order to solve the conventional problems. [Summary of the Invention]

[0007] In view of the above, the present invention provides a light-emitting device to solve the problems of the prior art.

[0008] A light-emitting device includes a flexible circuit board, a battery, a plurality of predetermined color light-emitting diodes, a sensor, and a control chip. The battery is disposed on the flexible circuit board. The plurality of predetermined color light-emitting diodes are disposed on the flexible circuit board and electrically coupled to the battery. The plurality of predetermined color light-emitting diodes includes a first predetermined color light-emitting diode and a second predetermined color light-emitting diode. The first predetermined color light-emitting diode includes a first light-emitting diode chip and a first phosphor layer covering it; the second predetermined color light-emitting diode includes a second light-emitting diode chip. The driving voltage of the first light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the first predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode. The sensor is disposed on the flexible circuit board, and the sensor detects an external force to generate a control signal. The control chip is mounted on a flexible circuit board and is electrically coupled to a sensor, a plurality of predetermined color light-emitting diodes, and a battery. The control chip receives control signals generated by the sensor and drives the plurality of predetermined color light-emitting diodes to emit light in a certain light-emitting mode according to the control signals.

[0009] The first predetermined color light-emitting diode emits light in the following colors: pink, light pink, light green, light green, light yellow, light yellow, or white; the second predetermined color light-emitting diode emits light in the following colors: blue. Both the first and second light-emitting diode chips are blue light-emitting diode chips, and the second light-emitting diode chip is not covered with a phosphor layer.

[0010] The plurality of predetermined color light-emitting diodes further includes a third predetermined color light-emitting diode, the third predetermined color light-emitting diode includes a third light-emitting diode chip and a third phosphor layer covering it, wherein the driving voltage of the third light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the third predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode.

[0011] Wherein, the light emission color of the first predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode further includes a second phosphor layer covering the second light-emitting diode chip, and the light emission color of the second predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; wherein both the first light-emitting diode chip and the second light-emitting diode chip are blue light-emitting diode chips.

[0012] In this case, a plurality of predetermined color light-emitting diodes are disposed on a first surface of one of the flexible circuit boards, and a control chip is disposed on a second surface of the flexible circuit board corresponding to one of the first surfaces.

[0013] The flexible circuit board further includes a first connecting member and a second connecting member. The first connecting member is connected to a first electrode of the battery and bypasses a side wall of the battery. The second connecting member is connected to a second electrode of the battery but does not bypass the side wall of the battery.

[0014] The battery is disposed on the second surface of the flexible circuit board, one end of the first connecting member is welded to the first surface of the flexible circuit board, and one end of the second connecting member is welded to the first surface of the flexible circuit board and passes through the flexible circuit board.

[0015] The flexible circuit board includes a recess, and the sensor is disposed in the recess.

[0016] The present invention further provides a light-emitting device comprising a circuit board, a battery, a plurality of predetermined color light-emitting diodes, a sensor, and a control chip. The battery is disposed on the circuit board. The plurality of predetermined color light-emitting diodes are electrically coupled to the battery, and the plurality of predetermined color light-emitting diodes include a first predetermined color light-emitting diode and a second predetermined color light-emitting diode. The first predetermined color light-emitting diode includes a first light-emitting diode chip and a first phosphor layer covering it; the second predetermined color light-emitting diode includes a second light-emitting diode chip. The driving voltage of the first light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the first predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode. The sensor is disposed on the circuit board, and the sensor detects an external force to generate a control signal. The control chip is disposed on the circuit board, and the control chip is electrically coupled to the sensor, the plurality of predetermined color light-emitting diodes, and the battery. The control chip receives the control signal generated by the sensor and drives a plurality of predetermined color light-emitting diodes to emit light in a light-emitting mode according to the control signal.

[0017] The light emission mode includes a first light emission sequence and a second light emission sequence following the first light emission sequence. The first light emission sequence consists of a plurality of predetermined color light-emitting diodes emitting light at a first flashing frequency, and the second light emission sequence consists of a plurality of predetermined color light-emitting diodes emitting light at a second flashing frequency, wherein the second flashing frequency is different from the first flashing frequency.

[0018] The first predetermined color light-emitting diode emits light in the following colors: pink, light pink, light green, light green, light yellow, light yellow, or white; the second predetermined color light-emitting diode emits light in the following colors: blue. Both the first and second light-emitting diode chips are blue light-emitting diode chips, and the second light-emitting diode chip is not covered with a phosphor layer.

[0019] The plurality of predetermined color light-emitting diodes further includes a third predetermined color light-emitting diode, which includes a third light-emitting diode chip and a third phosphor layer covering it. The driving voltage of the third light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the third predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode.

[0020] Wherein, the light emission color of the first predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode further includes a second phosphor layer covering the second light-emitting diode chip, and the light emission color of the second predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; wherein both the first light-emitting diode chip and the second light-emitting diode chip are blue light-emitting diode chips.

[0021] Wherein, the first light emission sequence consists of a plurality of predetermined color light-emitting diodes emitting light sequentially at a first flashing frequency; the second light emission sequence consists of a plurality of predetermined color light-emitting diodes emitting light sequentially at a second flashing frequency, wherein the second flashing frequency is a gradually changing frequency.

[0022] In the first light emission sequence, the light emission period of each predetermined color light emission diode is the same, and the light emission periods of two adjacent predetermined color light emission diodes are adjacent, or the light emission periods of two adjacent predetermined color light emission diodes include a non-light emission gap.

[0023] Wherein, the first light emission sequence consists of a plurality of predetermined color light-emitting diodes that emit light N times in sequence at a first flashing frequency; the second light emission sequence consists of a plurality of predetermined color light-emitting diodes that emit light simultaneously at a second flashing frequency.

[0024] The present invention further provides a light-emitting device comprising a circuit board, a battery, a plurality of predetermined color light-emitting diodes, a sensor, a counting device, and a control chip. The battery is disposed on the circuit board. The plurality of predetermined color light-emitting diodes are electrically coupled to the battery. The plurality of predetermined color light-emitting diodes includes a first predetermined color light-emitting diode and a second predetermined color light-emitting diode. The first predetermined color light-emitting diode includes a first light-emitting diode chip and a first phosphor layer covering it; the second predetermined color light-emitting diode includes a second light-emitting diode chip. The driving voltage of the first light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the first predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode. The sensor is disposed on the circuit board, and the sensor detects an external force to generate a control signal. The counting device counts the number of times the sensor generates the control signal and selectively generates a counting signal. The control chip is mounted on a circuit board and is electrically coupled to a sensor, a counting device, a plurality of predetermined color light-emitting diodes, and a battery. The control chip includes a memory device to store a plurality of light emission modes. Based on control signals and counting signals, the control chip selects one of the plurality of light emission modes to drive the plurality of predetermined color light-emitting diodes to emit light.

[0025] The first predetermined color light-emitting diode emits light in the color of pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode emits light in the color of blue; both the first and second light-emitting diode chips are blue light-emitting diode chips, and the second light-emitting diode chip is not covered with a phosphor layer.

[0026] The plurality of predetermined color light-emitting diodes further includes a third predetermined color light-emitting diode, the third predetermined color light-emitting diode includes a third light-emitting diode chip and a third phosphor layer covering it, wherein the driving voltage of the third light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the emission color of the third predetermined color light-emitting diode is different from the emission color of the second predetermined color light-emitting diode.

[0027] Wherein, the light emission color of the first predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode further includes a second phosphor layer covering the second light-emitting diode chip, and the light emission color of the second predetermined color light-emitting diode is pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; wherein both the first light-emitting diode chip and the second light-emitting diode chip are blue light-emitting diode chips.

[0028] Among them, the plurality of light-emitting modes include a sequential flashing mode, a simultaneous flashing mode, a back-and-forth flashing mode, an alternating flashing mode, or a marquee flashing mode.

[0029] The first and second sides of the flexible circuit board each contain a plurality of circuit lines that are flatly disposed on the flexible circuit board. The battery, sensor, predetermined color light-emitting diode and control chip are electrically connected through the circuit lines.

[0030] Among them, the predetermined color light emitting diode system is a blue light emitting diode.

[0031] The light emission mode includes an alternating flashing mode and a marquee flashing mode. In the alternating flashing mode, the control chip drives the predetermined color light-emitting diode to flash alternately, and in the marquee flashing mode, the control chip drives the predetermined color light-emitting diode to flash sequentially in a marquee format.

[0032] When the control chip selects the running light flashing mode, the control chip controls each predetermined color light-emitting diode to emit light in sequence once to form a light emission cycle, and repeats the light emission cycle N times, where N is an integer greater than 0.

[0033] When the control chip selects the running light flashing mode, the control chip controls each predetermined color light-emitting diode to emit light in sequence once and then emit light in reverse sequence once to form a light emission cycle, and repeats the light emission cycle N times, where N is an integer greater than 0.

[0034] When the control chip selects the alternating flashing mode, the control chip first controls the light-emitting diodes of every two predetermined colors to emit light twice in sequence to form a light-emitting cycle, and repeats the light-emitting cycle N times, where N is an integer greater than 0.

[0035] When the control chip selects the alternating flashing mode, the control chip first controls the predetermined color light emitting diodes to emit light at least once simultaneously, and then controls each predetermined color light emitting diode to emit light at least once in sequence to form a light emission cycle, and repeats the light emission cycle N times, where N is an integer greater than 0.

[0036] The light emission mode further includes a first light emission sequence and a second light emission sequence. The control chip drives a predetermined color light-emitting diode to emit light at a fixed light emission frequency according to the first light emission sequence, and then emits light at a progressively changing frequency according to the second light emission sequence.

[0037] The present invention further provides a light-emitting device, comprising a sensor, a plurality of predetermined color light-emitting diodes, and a control chip. The sensor detects an external force to generate a control signal. Each predetermined color light-emitting diode has a phosphor selectively coated on its surface. The phosphor absorbs the predetermined color light emitted by the predetermined color light-emitting diode and emits light of other colors. The driving voltage of each predetermined color light-emitting diode is the same. The control chip is electrically connected to the sensor and the predetermined color light-emitting diodes. The control chip stores a light-emitting mode, receives the control signal generated by the sensor, and controls the predetermined color light-emitting diodes to emit light in the light-emitting mode according to the control signal.

[0038] Among them, the predetermined color light emitting diode system is a blue light emitting diode.

[0039] The light emission mode is controlled by the control chip to control each predetermined color light-emitting diode to emit light in sequence once to form a light emission cycle, and repeat the light emission cycle N times, where N is an integer greater than 0.

[0040] The light emission mode is controlled by the control chip to control each predetermined color light-emitting diode to emit light in sequence once and then emit light in reverse sequence once to form a light emission cycle, and repeat the light emission cycle N times, where N is an integer greater than 0.

[0041] The light emission mode is controlled by the chip to first control the light emission diodes of every two predetermined colors to emit light twice in sequence to form a light emission cycle, and repeat the light emission cycle N times, where N is an integer greater than 0.

[0042] The present invention further provides a light-emitting device, comprising a sensor, a plurality of predetermined color light-emitting diodes, and a control chip. The sensor detects an external force to generate a control signal. Each predetermined color light-emitting diode has a phosphor selectively coated on its surface. The phosphor absorbs the predetermined color light emitted by the predetermined color light-emitting diode and emits light of other colors. The driving voltage of each predetermined color light-emitting diode is the same. The control chip is electrically connected to the sensor and the predetermined color light-emitting diodes. The control chip further stores a first light emission sequence and a second light emission sequence. The control chip receives the control signal generated by the sensor and drives the predetermined color light-emitting diodes to emit light at a fixed emission frequency according to the first emission sequence, and then emit light at a progressively changing frequency according to the second emission sequence.

[0043] Among them, the predetermined color light emitting diode system is a blue light emitting diode.

[0044] In summary, the present invention provides a light-emitting device that, through the circuit lines in a flexible circuit board, allows the battery, a predetermined color light-emitting diode, a sensor, and a control chip to be directly mounted on the surface of the flexible circuit board without the need for external wiring, thus significantly reducing the overall size. Furthermore, the present invention provides multiple light-emitting modes without increasing circuit complexity or external wiring, allowing the control chip to select the corresponding light-emitting mode based on the control signal detected by the sensor. [Simplified Explanation of the Diagram]

[0045] Figure 1 is a schematic diagram illustrating the structure of a light-emitting device according to a specific embodiment of the present invention.

[0045] Figure 2 is a schematic diagram of the structure of the light-emitting device according to Figure 1 from another perspective.

[0045] Figure 3 is a schematic diagram of the structure of the light-emitting device according to Figure 1 from another perspective.

[0045] Figure 4A is a schematic diagram illustrating the light emission modes of a plurality of predetermined color light-emitting diodes according to Figure 1.

[0045] Figure 4B is a schematic diagram illustrating the light emission modes of a plurality of predetermined color light-emitting diodes according to Figure 1.

[0045] Figure 4C is a schematic diagram illustrating the light emission modes of a plurality of predetermined color light-emitting diodes according to Figure 1.

[0045] Figure 4D is a schematic diagram illustrating the light emission modes of a plurality of predetermined color light-emitting diodes according to Figure 1.

[0045] Figure 4E is a schematic diagram illustrating the input signals of a plurality of predetermined color light-emitting diodes according to Figure 1.

[0045] Figure 5 is a schematic diagram illustrating a wearable object with light-emitting function according to another specific embodiment of the present invention.

Implementation Method

[0046] To make the advantages, spirit, and features of the present invention easier and clearer to understand, detailed descriptions and discussions will follow with reference to the accompanying drawings and specific embodiments. It should be noted that these specific embodiments are merely representative examples of the present invention, and the specific methods, apparatus, conditions, materials, etc., exemplified are not intended to limit the present invention or the corresponding specific embodiments. Furthermore, the elements in the figures are only used to express their relative positions and are not drawn to scale; the step numbers in the present invention are only for distinguishing different steps and do not represent the order of the steps, as will be stated previously.

[0047] Please refer to Figures 1 and 2 together. Figure 1 is a schematic diagram illustrating the structure of a light-emitting device 1 according to a specific embodiment of the present invention, and Figure 2 is a schematic diagram illustrating the structure of the light-emitting device according to Figure 1 from another perspective. As shown in Figures 1 and 2, the light-emitting device 1 of this specific embodiment includes a flexible circuit board 11 (length L; width W), a battery 12, a plurality of predetermined color light-emitting diodes 131, 132, 133, 134, 135, 136, a sensor 14, and a control chip 15. The battery 12, the predetermined color light-emitting diodes 131-136, the sensor 14, and the control chip 15 are all disposed on the flexible circuit board 11, and the width W of the flexible circuit board 11 is smaller than the width or diameter of the battery 12. In another embodiment, the flexible circuit board 11 has a recess to accommodate the sensor 14. The sensor 14 may be a motion sensor used to detect external forces to generate control signals. The control chip 15 is electrically connected to the battery 12, the predetermined color light-emitting diodes 131-136, and the sensor 14 via the flexible circuit board 11. The control chip 15 selects a light emission mode based on the control signal or sensing signal generated by the sensor 14 detecting the external force, and drives the predetermined color light-emitting diodes 131-136 to emit light according to the selected light emission mode.

[0048] In practice, the flexible circuit board of the present invention uses a flexible printed circuit board (FPCB), and the flexible circuit board is a double-sided board. Please refer to Figures 1, 2, and 3 together. Figure 3 is a structural schematic diagram of the light-emitting device 1 according to Figure 1 from another perspective. As shown in Figure 2, the predetermined color light-emitting diodes 131-136 and the sensor 14 are disposed on the first surface 111 of the flexible circuit board 11; as shown in Figure 3, the control chip 15 and the battery 12 can be disposed on the second surface 112 corresponding to the first surface. That is, when the light-emitting device 1 of the present invention is disposed on the surface of any product, the first surface 111 can emit light outward; in addition, the control chip 15 and the battery 12 are disposed on the second surface 112 of the flexible circuit board 11, thereby saving space on the first surface 111 of the flexible circuit board 11, which is more conducive to the arrangement of the predetermined color light-emitting diodes 131-136. Based on the above configuration, the predetermined color light-emitting diodes are not limited to the single-row arrangement shown in Figures 1 to 3, but can be configured more flexibly (e.g., staggered) to make the light emitted by the light-emitting device 1 more varied.

[0049] Furthermore, the first surface 111 and the second surface 112 of the flexible circuit board 11 each contain a plurality of circuit lines (not shown in the figure) that are flatly mounted on the flexible circuit board 11, allowing the battery 12, the predetermined color light-emitting diodes 131-136, the sensor 14, and the control chip 15 to be electrically connected through the plurality of circuit lines. In a conventional rigid circuit board architecture, the control chip 15 and the battery 12 are mounted on the rigid circuit board, while the predetermined color light-emitting diodes are mounted on the wearable device away from the rigid circuit board, thus requiring additional external wiring to connect the predetermined color light-emitting diodes to the rigid circuit board. However, the present invention, through the flexible circuit board, can design the internal circuit lines to have transmission line characteristics by controlling capacitors, inductors, characteristic impedances, etc., during the design process, allowing the predetermined color light-emitting diodes, the control chip 15, and the battery 12 to be directly mounted on the surface of the flexible circuit board, and the predetermined color light-emitting diodes at different positions on the flexible circuit board correspond to the positions of different wearable devices. Therefore, the flexible circuit board of the light-emitting device of the present invention can simplify the overall circuit structure design, reduce external circuits, and reduce the overall size.

[0050] Furthermore, as shown in FIG1, the flexible circuit board 11 may further include two sets of connecting members. One connecting member 161 is connected at one end to the positive terminal of the battery 12 and the flexible circuit board 11; the other connecting member 162 is connected to the negative terminal of the battery 12 and the flexible circuit board 11, and the connecting members 161 and 162 are electrically coupled to the flexible circuit board 11. For example, one end of the connecting member 161 is connected to or soldered to the first surface 111 of the flexible circuit board 11, and is soldered to the positive terminal of the battery 12, bypassing the sidewall of the battery 12; one end of the connecting member 162 is connected to or soldered to the first surface 111 of the flexible circuit board 11, and is directly soldered to the negative terminal of the battery 12 without bypassing the sidewall of the battery 12, wherein the connecting member 162 can pass through the flexible circuit board 11. In practice, the battery may be a primary battery such as a carbon-zinc battery or an alkaline battery, or a rechargeable secondary battery or a rechargeable battery with a USB port may also be used.

[0051] The predetermined color light-emitting diodes 131-136 of the light-emitting device 1 in this specific embodiment can be LEDs of different colors, such as pink, light pink, light green, light green, light yellow, light yellow, white, etc. However, LEDs of different colors all have the same light-emitting diode chip, such as a blue light-emitting diode chip, and selectively coat the surface of the blue light-emitting diode with phosphors of different colors or proportions. These phosphors absorb the blue light emitted by the blue light-emitting diode and then emit light of other colors. For example, a pink LED is a blue light-emitting diode chip coated with phosphors that produce pink light. To make a pink LED, the amount of pink phosphors coated on the blue light-emitting diode chip is increased. A light green LED is a blue light-emitting diode chip coated with phosphors that produce green light. To make a light green LED, the amount of light green phosphors coated on the blue light-emitting diode chip is increased, and so on. In this way, the light-emitting device 1 can emit light of different colors using a predetermined color light-emitting diode coated with a phosphor layer. Since all the predetermined color light-emitting diodes in the light-emitting device 1 use the same type of light-emitting diode chip (such as a blue light-emitting diode chip), the driving voltage or operating voltage Vf required for all predetermined color light-emitting diodes to emit light is the same or substantially the same (for example, even for the same blue light-emitting diode chip, the driving voltage may have slight differences due to the manufacturing process; for example, if the median value is 3V, the blue light-emitting diode chip may have a difference of ±1% to 5%, such as between 2.85V and 3.15V, between 2.9V and 3.1V, or between 2.97V and 3.03V). Through the above-mentioned technical means, even if several predetermined color light-emitting diodes in the light-emitting device emit several different colors of light, the battery will continue to output the same voltage stably, thereby extending the service life of the light-emitting device. Of course, in the specific embodiment, the light-emitting device 1 may include at least one blue light-emitting diode chip among the predetermined color light-emitting diodes 131-136, but without a phosphor layer covering it, so the predetermined color light-emitting diode emits blue light. For example, the predetermined color light-emitting diodes 131-136 are respectively a first predetermined color light-emitting diode 131, a second predetermined color light-emitting diode 132, a third predetermined color light-emitting diode 133, a fourth predetermined color light-emitting diode 134, a fifth predetermined color light-emitting diode 135, and a sixth predetermined color light-emitting diode 136. The first, third to sixth predetermined color light-emitting diodes are covered with a phosphor layer on their chips and can emit light of colors other than blue light, while the chip of the second predetermined color light-emitting diode is not covered with a phosphor layer, so the second predetermined color light-emitting diode emits blue light.Conventional technology utilizes different light-emitting diodes (LEDs) that emit different colors of light to present different color changes. When switching between LEDs of different colors, the battery also needs to switch the corresponding output voltage to drive the LED. When switching is frequent, the battery voltage change rate cannot keep up with the switching rate, which will reduce the lifespan of the battery and the LED. Therefore, compared with the prior art, the light-emitting device of the present invention has the advantage of a longer lifespan.

[0052] Furthermore, using the same light-emitting diode at the same voltage output can significantly simplify the time cost of circuit board design. In addition, besides the aforementioned advantages of small size and long lifespan, the light-emitting device of the present invention also pre-stores multiple light-emitting modes in the control chip (such as in the memory of the control chip). Please refer to Figures 2, 4A to 4E. Figure 4A is a schematic diagram illustrating the light-emitting modes of the plurality of predetermined color light-emitting diodes according to Figure 1. Figure 4B is a schematic diagram illustrating the light-emitting modes of the plurality of predetermined color light-emitting diodes according to Figure 1. Figure 4C is a schematic diagram illustrating the light-emitting modes of the plurality of predetermined color light-emitting diodes according to Figure 1. Figure 4D is a schematic diagram illustrating the light-emitting modes of the plurality of predetermined color light-emitting diodes according to Figure 1. Figure 4E is a schematic diagram illustrating the input signals of the plurality of predetermined color light-emitting diodes according to Figure 1. In Figures 4A to 4E, the horizontal axis represents time, and the vertical axis represents the numbers 131, 132, 133, 134, 135, and 136 of a plurality of predetermined color light-emitting diodes. Each square wave peak in each figure represents that the predetermined color light-emitting diode is emitting light. Each figure in Figures 4A to 4E illustrates a light emission cycle of a light emission mode. In other embodiments, the plurality of predetermined color light-emitting diodes may emit light at square wave troughs.

[0053] As shown in Figure 4A, when the control chip selects the light emission mode of Figure 4A according to the external force value detected by the sensor or the control signal generated by the sensor, the control chip 15 drives a plurality of predetermined color light-emitting diodes 131 to 136 to emit light once in sequence to form a light emission cycle, and then repeats the light emission cycle N times, where N is an integer greater than 0, to form a light emission mode with a forward flashing effect. Furthermore, the flashing direction is not limited to this. As shown in Figure 4B, the control chip 15 drives a plurality of predetermined color light-emitting diodes 131 to 136 to emit light once in sequence, and then the plurality of predetermined color light-emitting diodes 136 to 131 emit light once in sequence. At this time, from the perspective in Figure 2, you can see a plurality of predetermined color light-emitting diodes emitting light in a light emission cycle from right to left and then from left to right to form a back-and-forth flashing light emission mode, and then repeats the light emission cycle N times, where N is an integer greater than 0.

[0054] In another embodiment, after the plurality of predetermined color light-emitting diodes 131, 133, 132, 135, 134, and 136 flash forward or backward once or twice, they may flash again in the same order one or more times. However, the flashing duration or flashing frequency of the subsequent flashes may differ from the flashing duration or flashing frequency of the previous forward flashes, so as to provide a visual effect of different flashing frequencies. For example, the flashing duration of the subsequent flashes may gradually increase or decrease; or the flashing frequency of the subsequent flashes may gradually increase or decrease.

[0055] Next, in addition to the aforementioned flashing modes, other flashing modes can also be pre-stored in the control chip. As shown in FIG4C, the control chip 15 drives a plurality of predetermined color light-emitting diodes 131~136 to emit light sequentially in the order of light-emitting diodes 131, 133, 132, 135, 134, 136 to form a light emission cycle N times, where N is an integer greater than 0. However, the number of times each predetermined color light-emitting diode emits light and the order of light emission are not limited thereto. For example, in another embodiment, the plurality of predetermined color light-emitting diodes each emit light M times and emit light sequentially in the order described above. When M is 2, after light-emitting diode 131 emits light twice, light-emitting diode 133 then emits light twice, where M is a natural number; in another embodiment, K predetermined color light-emitting diodes emit light simultaneously. When K is 2, light-emitting diodes 131 and 133 emit light simultaneously, where K is a natural number less than or equal to the number of the plurality of predetermined color light-emitting diodes.

[0056] Furthermore, the light emission mode can be designed with different light emission durations according to requirements, as shown in Figure 4D. The difference between the light emission modes in Figure 4D and Figure 4C is that after the light-emitting diode 136 finishes flashing at time t6, the light-emitting diodes 131, 133, 132, 135, 134, and 136 flash one or more times in the same order. However, the flashing duration or flashing frequency from time t6 to t12 can be different from the previous flashing duration or flashing frequency to provide a visual effect of different flashing frequencies. For example, the flashing duration of the subsequent flashes gradually increases or decreases; or the flashing frequency of the subsequent flashes can gradually increase or decrease.

[0057] In addition to the alternating flashing mode and the marquee flashing mode mentioned above, the present invention provides other types of light emission modes. As shown in FIG4E, the control chip first controls the predetermined color light emitting diodes 131 to 136 to emit light simultaneously once, and then controls each predetermined color light emitting diode to emit light sequentially at least once to form a light emission cycle, and repeats the light emission cycle N times, where N is an integer greater than 0. In other embodiments, the control chip can control all predetermined color light emitting diodes to emit light simultaneously L times, where L is an integer greater than 0.

[0058] Regardless of the light emission flashing mode, there may be a gap between two adjacent light emission periods of the predetermined color light emission diodes, or there may be no gap between two light emission periods of the predetermined color light emission diodes (as shown in Figure 4A or Figure 4A), or the light emission periods of two predetermined color light emission diodes may partially overlap.

[0059] The sensor 14 can be a vibration sensor, a spring sensor, or something else that generates a control signal or sensing signal when it senses an external force. The sensor 14 can also generate different control signals or sensing signals depending on the magnitude of the external force. In practical applications, the control chip can be further designed to pre-store corresponding light emission modes for different external force ranges. For example, when the sensor senses a small external force (such as a light touch with a hand), the control chip selects the first light emission mode (as shown in Figure 4A) based on the first sensing signal detected by the sensor to drive a plurality of predetermined color light-emitting diodes; when the sensor senses a larger impact force or a larger vibration frequency, the control chip selects the second light emission mode (as shown in Figure 4B) based on the second sensing signal detected by the sensor to drive a plurality of predetermined color light-emitting diodes. The number, arrangement, color, and light emission mode of the predetermined color light-emitting diodes in the light emission device of the present invention are not limited thereto, and users can design different types of light emission devices and light emission modes according to their own needs.

[0060] In another embodiment, the light-emitting device of the present invention further includes a counting device (which may be located in a flexible circuit board or within a control chip). The counting device can count the number of times the sensor 14 generates a control signal (or a sensing signal) and selectively generate a counting signal. The control chip selects a preset light-emitting mode from several light-emitting modes stored in memory to drive a plurality of predetermined color light-emitting diodes based on the control signal generated by the sensor 14 and the counting signal generated by the counting device. The counting device has a set number of bits. Once the count is exceeded, it resets to zero and starts counting again. For example, if the counting device is two-bit, the counting device does not generate a counting signal when the counter value is 0 or 1, and generates a counting signal when the counter value is 2 or 3. If the counting device is three-bit, it does not generate a counting signal when the counter value is 0 to 2, generates a first preset counting signal when the counter value is 3 to 5, and generates a second preset counting signal when the counter value is 6 to 7. The counting device with other bit counts follows the same principle. When the control chip receives only a control signal and no counting signal, it selects the first preset light emission mode to drive a plurality of predetermined color light-emitting diodes; when the control chip receives both the control signal and the first preset counting signal, it selects the second preset light emission mode to drive a plurality of predetermined color light-emitting diodes; when the control chip receives both the control signal and the second preset counting signal, it selects the second preset light emission mode to drive a plurality of predetermined color light-emitting diodes.

[0061] In another embodiment, the light-emitting device of the present invention further includes a signal receiver disposed within a flexible circuit board or within a control chip. Users can wirelessly or wiredly connect to the signal receiver of this embodiment via their own smart handheld device to transmit different flashing modes to the control chip and store them in the memory within the control chip.

[0062] In another embodiment, the light-emitting device of the present invention further includes an ON / OFF switch disposed on a flexible circuit board. When the ON / OFF switch is closed, the battery does not supply power, so the control chip will not drive the predetermined color light-emitting diode to emit light regardless of whether the sensor 14 detects an external force; and when the ON / OFF switch is open, the battery supplies power, so the control chip will drive the predetermined color light-emitting diode to emit light when the sensor 14 detects an external force.

[0063] In another embodiment, the light-emitting device of the present invention further includes a selection switch disposed on a flexible circuit board. Different flashing modes can be switched by pressing the selection switch each time. When the first flashing mode is selected, when the sensor 14 detects an external force, the control chip will drive a predetermined color light-emitting diode to emit light according to the first flashing mode.

[0064] This invention provides another light-emitting device, comprising a sealed housing, a circuit board, a battery, a sensor, a plurality of predetermined color light-emitting diodes, and a control chip. The battery, circuit board, sensor, and control chip are located within the sealed housing, and are disposed on the circuit board. A wire assembly extends from the circuit board, passes through the sealed housing, and connects to the plurality of predetermined color light-emitting diodes. The sensor detects external force to generate a control signal. Each predetermined color light-emitting diode has the same light-emitting diode chip, but different phosphors are coated on the surface of different light-emitting diode chips. The phosphors absorb the light emitted by the light-emitting diode chips and convert it into other colors of light. Furthermore, the driving voltage of each predetermined color light-emitting diode is the same. In practice, blue light-emitting diodes can be used as the light-emitting diode chips. The control chip is electrically connected to a sensor and a plurality of predetermined color light-emitting diodes. The control chip stores a light emission mode, receives control signals generated by the sensor, and controls the plurality of predetermined color light-emitting diodes to emit light in the light emission mode according to the control signals. In practical applications, the light emission device of this specific embodiment can also store the light emission modes of Figures 4A to 4E in the control chip, allowing users to store the required light emission mode as needed, and can also be combined with the aforementioned different embodiments for light emission.

[0065] The present invention provides another light-emitting device, comprising a sensor, a plurality of predetermined color light-emitting diodes, and a control chip. The difference between this embodiment and the above embodiments is that the control chip in this embodiment further stores a first light-emitting sequence and a second light-emitting sequence. The control chip receives a control signal generated by the sensor and drives the predetermined color light-emitting diodes to emit light at a fixed light-emitting frequency according to the first light-emitting sequence, and then emits light at a progressively changing frequency according to the second light-emitting sequence.

[0066] In summary, the light-emitting device provided by the present invention integrates all components through a double-sided flexible circuit board, which significantly reduces the size of the light-emitting device without the need for external wiring. Furthermore, the flexible circuit board has good elasticity, heat resistance, and solderability, thus allowing for further integration into wearable devices currently on the market. Please refer to Figure 5, which is a schematic diagram illustrating a wearable device E with light-emitting function according to another specific embodiment of the present invention. As shown in Figure 5, in this specific embodiment, the wearable device E includes a wearable device body 2 (as shown in Figure 5), a connector 21, and the aforementioned light-emitting device 1. The light-emitting device 1 can be fixed to the wearable device body 2 by the connector (such as tape, adhesive layer, or rivets) 21, or can be connected in various ways. Further, the light-emitting device 1 can be covered by a cover (not shown, such as a translucent plate or an outer cover with a preset pattern). In practical applications, when sensor 14 detects external force generated by a user walking or running, sensor 14 generates a control signal. Then, control chip 15 receives the control signal from the sensor, selects a light-emitting mode, and controls battery 12 and predetermined color light-emitting diodes 131-136 to emit light according to the light-emitting mode. The designed light-emitting color and flashing pattern are then displayed through a cover. It is worth noting that because flexible circuit boards have advantages such as good elasticity and small size, they can be arbitrarily set in different positions on shoes (such as the tongue, upper, and side of the sole) through connectors to achieve different decorative effects. They can even be set in the body of wearable objects with softer and more deformable materials, thereby overcoming the disadvantage of conventional rigid circuit boards which cannot be used versatilely. Please note that other devices and functions in the light-emitting device of this specific embodiment are the same as the corresponding elements in the aforementioned specific embodiments, and therefore will not be repeated here. In another embodiment, the light-emitting device of the wearable object with light-emitting function includes the aforementioned signal receiver. Users can operate the light-emitting mode control chip 15 on the shoe surface through a smart handheld device according to their needs.

[0067] In summary, the present invention provides a light-emitting device that, through the circuit lines in a flexible circuit board, allows the battery, a predetermined color light-emitting diode, a sensor, and a control chip to be directly mounted on the surface of the flexible circuit board without the need for external wiring, thus significantly reducing the overall size. Furthermore, the present invention provides multiple light-emitting modes without increasing circuit complexity or external wiring, allowing the control chip to select the corresponding light-emitting mode based on the control signal detected by the sensor.

[0068] The detailed description of the preferred embodiments above is intended to more clearly describe the features and spirit of the present invention, and is not intended to limit the scope of the present invention by the preferred embodiments disclosed above. On the contrary, the aim is to cover various changes and equivalent arrangements within the scope of the patent claims of the present invention. Therefore, the scope of the patent claims of the present invention should be interpreted in the broadest possible sense based on the foregoing description, so as to cover all possible changes and equivalent arrangements.

Claims

1. A light-emitting device, comprising: a flexible circuit board including a first connecting member and a second connecting member; a battery disposed on the flexible circuit board, the first connecting member connecting to a first electrode of the battery and bypassing a sidewall of the battery, the second connecting member connecting to a second electrode of the battery but not bypassing the sidewall of the battery; a plurality of predetermined color light-emitting diodes disposed on the flexible circuit board and electrically coupled to the battery, the plurality of predetermined color light-emitting diodes including a first predetermined color light-emitting diode and a second predetermined color light-emitting diode, the first predetermined color light-emitting diode including a first light-emitting diode chip and a first phosphor layer covering thereon, the second predetermined color light-emitting diode including a second light-emitting diode chip; wherein the driving voltage of the first light-emitting diode chip and the driving voltage of the second light-emitting diode chip are the same or substantially the same; A sensor is disposed on the flexible circuit board and is used to detect an external force to generate a control signal; and a control chip is disposed on the flexible circuit board. The control chip is electrically coupled to the sensor, the predetermined color light-emitting diodes and the battery. The control chip receives the control signal generated by the sensor and drives the predetermined color light-emitting diodes to emit light in a light-emitting mode according to the control signal.

2. The light-emitting device as described in claim 1, wherein the first predetermined color light-emitting diode emits light in the color of pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode emits light in the color of blue; wherein both the first light-emitting diode chip and the second light-emitting diode chip are blue light-emitting diode chips, and the second light-emitting diode chip is not covered with a phosphor layer.

3. The light-emitting device as described in claim 2, wherein the plurality of predetermined color light-emitting diodes further includes a third predetermined color light-emitting diode, the third predetermined color light-emitting diode including a third light-emitting diode chip and a third phosphor layer covering thereon, wherein the driving voltage of the third light-emitting diode chip is the same as or substantially the same as the driving voltage of the second light-emitting diode chip, and the light emission color of the third predetermined color light-emitting diode is different from the light emission color of the second predetermined color light-emitting diode.

4. The light-emitting device as described in claim 1, wherein the first predetermined color light-emitting diode emits light in the color of pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; the second predetermined color light-emitting diode further comprises a second phosphor layer covering the second light-emitting diode chip, and the second predetermined color light-emitting diode emits light in the color of pink, dotted pink, light green, dotted light green, light yellow, dotted light yellow, or white; wherein both the first light-emitting diode chip and the second light-emitting diode chip are blue light-emitting diode chips.

5. The light-emitting device as described in claim 1, wherein the predetermined color light-emitting diodes are disposed on a first surface of the flexible circuit board, and the control chip is disposed on a second surface of the flexible circuit board corresponding to the first surface.

6. The light-emitting device as described in claim 5, wherein the battery is disposed on the second surface of the flexible circuit board, one end of the first connecting member is welded to the first surface of the flexible circuit board, and one end of the second connecting member is welded to the first surface of the flexible circuit board and passes through the flexible circuit board.

7. The light-emitting device as described in claim 1, wherein the flexible circuit board includes a recess and the sensor is disposed in the recess.

8. The light-emitting device as described in claim 1, wherein the light-emitting mode includes a first light-emitting sequence and a second light-emitting sequence following the first light-emitting sequence, the first light-emitting sequence being the plurality of predetermined color light-emitting diodes emitting light at a first flashing frequency, the second light-emitting sequence being the plurality of predetermined color light-emitting diodes emitting light at a second flashing frequency, and the second flashing frequency being different from the first flashing frequency.

9. The light-emitting device as described in claim 8, wherein the first light-emitting sequence is the plurality of predetermined color light-emitting diodes emitting light sequentially at the first flashing frequency; and the second light-emitting sequence is the plurality of predetermined color light-emitting diodes emitting light sequentially at the second flashing frequency, wherein the second flashing frequency is a gradient frequency.

10. The light-emitting device as described in claim 9, wherein in the first light-emitting sequence, the light-emitting period of each predetermined color light-emitting diode is the same, and the light-emitting periods of two adjacent predetermined color light-emitting diodes are adjacent, or the light-emitting periods of two adjacent predetermined color light-emitting diodes include a non-light-emitting gap.

11. The light-emitting device as described in claim 8, wherein the first light-emitting sequence is that the plurality of predetermined color light-emitting diodes emit light N times in sequence at the first flashing frequency; and the second light-emitting sequence is that the plurality of predetermined color light-emitting diodes emit light simultaneously at the second flashing frequency.

12. The light-emitting device as described in claim 1 further comprises: a counting device that counts the number of times the sensor generates the control signal and selectively generates a counting signal; wherein the control chip includes a memory device that stores a plurality of light-emitting modes, and the control chip selects a light-emitting mode from the plurality of light-emitting modes according to the control signal and the counting signal to drive the plurality of predetermined color light-emitting diodes to emit light.

13. The light-emitting device as described in claim 12, wherein the plurality of light-emitting modes includes a sequential flashing mode, a simultaneous flashing mode, a back-and-forth flashing mode, an alternating flashing mode, or a marquee flashing mode.

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