TWM524800U - Multiple lamp sets failure control circuit device - Google Patents

Description

Multi-lamp group failure control circuit device

The present invention relates to a multi-lamp failure control circuit device, and more particularly to a multi-lamp failure control circuit device capable of avoiding the occurrence of another group being inoperable due to a short-circuit failure of one of the lamp groups.

The rapid development of the technology of the current transportation has brought many conveniences to the users, especially the number of vehicles has risen rapidly, so the importance of the safety design of the vehicles is increasing day by day. Among them, the design of the lamp is also a warning function for the moving vehicle in addition to the lighting function.

At present, the vehicle headlights need to be equipped with high-beam lights and low-beam lights according to different driving conditions. The high beam lights can achieve the following effects: (1) The angle of the high beam lights will change even if the angle of the lights is different. far. (2) The high beam light will make the opposite lane driving extremely dazzling. (3) The high beam can be used when the road is dark or the line of sight is poor.

Compared with the high beam, the low beam can achieve the following effects: (1) The low beam is relatively close, which is the most common method of use. (2) It can be used when there is plenty of light at night or when it is raining during the day. (3) In general urban areas, the lighting is sufficient.

It can be seen from the above that the high beam and low beam of the vehicle are very necessary, so today's current vehicles will be equipped, but as can be seen from Fig. 1, there is a low beam group (LED1 and LED2) and a far distance. Light group 2 (LED3), when Q _{4 is} in the OFF state, it will cause the low beam group 1 to open the circuit, and the high beam group 2 will be opened because the low beam group 1 is open. The current cannot pass through the high beam group 2, so it can't be activated. This will cause the two groups to fail. This situation will make both groups unable to illuminate, so it is very Serious need to solve.

Therefore, if a simple circuit is used, in the case where one of the groups of lamps is open, it is possible to detect a voltage rise and form a short circuit through a fail-safe switch, so that the other group of lamps does not open because of the lamp group. This is not the case, so this creation should be the best solution.

A multi-lamp failure control circuit device includes at least: a lamp unit, comprising at least a first lamp group and a second lamp group, wherein the first lamp group is connected in series with the second lamp group; The measuring unit is configured to detect the voltage across the lamp unit, and the detecting unit has a fail-safe switch connected in parallel with the first lamp group, and the fail-safe switch is used for the lamp unit After the voltage at both ends rises, the fail-safe switch can form a short-circuit state, so that the current entering the lamp unit can pass through the fail-safe switch before entering the second lamp group.

In a preferred embodiment, the first light group and the second light group are composed of one or more light emitting diodes.

In a preferred embodiment, wherein the first lamp group is in an open state, the voltage across the lamp unit is increased.

In a preferred embodiment, the current entering the lamp unit first passes through the fail-safe switch and then enters the second lamp group to stop the operation of the first lamp group and enable the first lamp group to be activated. The two light groups can continue to operate.

In a preferred embodiment, the fail-safe relationship is a transistor.

In a preferred embodiment, the fail-safe relationship is a field effect transistor.

In addition, the present invention further has another embodiment, the multi-lamp group failure control circuit device includes at least one lamp unit, and includes at least a first lamp group and a second lamp group, wherein the first lamp group is Connected to the second lamp group; a detecting unit is configured to detect the voltage across the lamp unit, and the detecting unit has a fail-safe switch in parallel with the second lamp group, the failure After the protection switch is used to increase the voltage across the lamp unit, the fail-safe switch can form a short-circuit state, so that the current entering the lamp unit can directly enter the failure protection after passing through the first lamp group. switch.

In a preferred embodiment, the first light group and the second light group are composed of one or more light emitting diodes.

In a preferred embodiment, wherein the second lamp group is in an open state, the voltage across the lamp unit is increased.

In a preferred embodiment, the current entering the lamp unit first passes through the first lamp group and then enters the fail-safe switch to stop the operation of the second lamp group and enable the first The light group can continue to operate.

In a preferred embodiment, the fail-safe relationship is a transistor.

In a preferred embodiment, the fail-safe relationship is a field effect transistor.

Other technical contents, features, and effects of the present invention will be apparent from the following detailed description of the preferred embodiments.

Please refer to FIG. 2, which is a schematic diagram of a simple circuit structure of the multi-lamp failure control circuit device. The multi-lamp failure control circuit device includes at least one lamp unit 1 and one detection unit 2, The light unit 1 includes at least a first light group 11 and a second light group 12, wherein the first light group 11 is connected in series with the second light group 12, and the first light group 11 and the first The second lamp group 12 is composed of one or more light emitting diodes;

In addition, the detecting unit 2 is configured to detect the voltage across the lamp unit 1, and the detecting unit 2 has a fail-safe switch 21 connected in parallel with the first lamp group 11. The fail-safe switch 21 After the voltage across the lamp unit 1 is increased, the fail-safe switch 21 can form a short-circuit state, so that the current entering the lamp unit 1 can pass through the fail-safe switch 21 before entering the first Two light groups 12.

It can be seen from FIG. 3A and FIG. 3B that the first lamp group 11 is composed of two light emitting diodes, and the second lamp group 12 is composed of one light emitting diode (in actual cases, The light-emitting diodes constitute a light group, which can be changed according to actual conditions); and the detecting unit 2 includes a base diode D ₄ , a controlled rectifier Q ₅₀ , a transistor Q ₁ and a resistor R ₁ , R ₂ , R ₄ , wherein the setting is as shown in FIG. 3B, the maximum voltage of the LED is 19.5V, and the trigger setting voltage is 25V. When the first lamp group 11 is open, the voltage at the Vt point rises to 28V, so The Zener diode D _{4 can be} turned on, and the voltage controlled rectifier Q ₅₀ can be triggered to enable the transistor Q ₁ to be in an ON state (short-circuit state), so the current I is in a similar short circuit when the control module 3 is in a short circuit. In the state, it will directly pass through the transistor Q ₁ and re-enter the second lamp group 12 to enable the second lamp group 2 to be actuated, so that even if the first lamp group 11 is open, it will not be affected. The second lamp group 2 is activated;

The setting of the resistor R ₂ can facilitate the detection unit 2 to be relatively stable when detected, and does not cause a malfunction due to detection errors.

From the measured waveform (when the normal operation, the first light group is open), as shown in Figure 4, there are three states: (a) During normal operation, the first light group 11 and the second light group The operating voltage of 12 is 18V; (b) When the first lamp group 11 is open, the Vt voltage will rise to 28V; (c) the detecting unit 2 will detect 28V, and then operate as shown in Figure 3A. As shown in FIG. 3B, after the trigger line is passed, the second light group 12 can still be activated, and the operating voltage of the second light group 2 is 6V, so even the first light group 11 Opening the road will not affect the actuation of the second light group 2.

From another measured waveform (when the power is turned on, the first light group is open), as shown in Figure 5, there are three states: (a) Before starting, the first light group 11 and the second light group The operating voltage of 12 is 0V; (b) When the first lamp group 11 is open, the Vt voltage after starting will rise to 28V; (c) the detecting unit 2 will detect 28V, and then operate as the first 3A and 3B illustrate that the second light group 12 can still be activated and illuminated when the trigger line is passed, and the operating voltage of the second light group 2 is 6V, so even the first The light group 11 is open, and does not affect the actuation of the second light group 2.

In addition to the above embodiment, as shown in FIG. 6, the fail-safe switch 21 of the detecting unit 2 can also be connected in parallel with the second lamp group 12. In this architecture, the operation principle is Similarly, when the second lamp group 12 fails (open circuit), the voltage across the lamp unit 2 increases, and the fail-safe switch 21 can form a short-circuit state, thus entering the current of the lamp unit 2. After passing through the first lamp group 11, the fail-safe switch is directly entered without passing through the second lamp group 12, so that the first lamp group 11 can be avoided due to the failure of the second lamp group 12. It also does not work.

The multi-lamp failure control circuit device provided by this creation has the following advantages when compared with other conventional technologies: 1. The multi-lamp failure control circuit device of the present invention can open a group of light groups through a simple circuit. In this case, it is possible to detect a voltage rise and form a short circuit condition through a fail-safe switch, so that the other group of lamps does not operate because the lamp group is open.

The present invention has been disclosed above in the above embodiments, but it is not intended to limit the present invention. Anyone skilled in the art having ordinary knowledge will understand the foregoing technical features and embodiments of the present invention without departing from the present invention. In the spirit and scope, the scope of patent protection of this creation shall be subject to the definition of the requirements attached to this manual.

1‧‧‧Light unit
11‧‧‧First Light Set
12‧‧‧Second light group
2‧‧‧Detection unit
21‧‧‧Failsafe switch

[Fig. 1] is a schematic diagram of a failure circuit of a conventional multi-lamp set. [Fig. 2] is a schematic diagram of a simple circuit structure of the multi-lamp failure control circuit device of the present invention. [Fig. 3A] is a schematic diagram of the actual operating circuit of the multi-lamp group failure control circuit device of the present invention. [Fig. 3B] is a schematic diagram showing the actual operating voltage change of the multi-lamp failure control circuit device of the present invention. [Fig. 4] is a schematic diagram of the implementation of the first measured state of the multi-lamp failure control circuit device of the present invention. [Fig. 5] is a schematic diagram of the second actual measurement state of the multi-lamp failure control circuit device of the present invention. [Fig. 6] is a schematic diagram of another simple circuit structure of the multi-lamp group failure control circuit device of the present invention.

1‧‧‧Light unit

11‧‧‧First Light Set

12‧‧‧Second light group

2‧‧‧Detection unit

21‧‧‧Failsafe switch

Claims (12)

A multi-lamp failure control circuit device includes at least: a lamp unit, comprising at least a first lamp group and a second lamp group, wherein the first lamp group is connected in series with the second lamp group; The measuring unit is configured to detect the voltage across the lamp unit, and the detecting unit has a fail-safe switch connected in parallel with the first lamp group, and the fail-safe switch is used for the lamp unit After the voltage at both ends rises, the fail-safe switch can form a short-circuit state, so that the current entering the lamp unit can pass through the fail-safe switch before entering the second lamp group. The multi-lamp failure control circuit device of claim 1, wherein the first lamp group and the second lamp group are composed of one or more light emitting diodes. The multi-lamp failure control circuit device of claim 1, wherein the first lamp group is in an open state, which causes the voltage across the lamp unit to rise. The multi-lamp failure control circuit device of claim 1, wherein the current entering the lamp unit passes through the fail-safe switch and then enters the second lamp group to stop the first lamp group. Actuate and enable the second light group to continue to operate. The multi-lamp failure control circuit device of claim 1, wherein the fail-safe relationship is a transistor. The multi-lamp failure control circuit device of claim 1, wherein the fail-safe open relationship is a field effect transistor. A multi-lamp failure control circuit device includes at least: a lamp unit, comprising at least a first lamp group and a second lamp group, wherein the first lamp group is connected in series with the second lamp group; The detecting unit is configured to detect the voltage across the lamp unit, and the detecting unit has a fail-safe switch connected in parallel with the second lamp group, and the fail-safe switch is used for the lamp unit After the voltage at both ends rises, the fail-safe switch can form a short-circuit state, so that the current entering the lamp set unit directly enters the fail-safe switch after passing through the first lamp group. The multi-lamp failure control circuit device of claim 7, wherein the first lamp group and the second lamp group are composed of one or more light-emitting diodes. The multi-lamp failure control circuit device of claim 7, wherein the second lamp group is in an open state, causing the voltage across the lamp unit to rise. The multi-lamp failure control circuit device of claim 7, wherein the current entering the lamp unit passes through the first lamp group and then enters the fail-safe switch to stop the second lamp group. Actuate and enable the first light group to continue to operate. The multi-lamp failure control circuit device of claim 7, wherein the fail-safe open relationship is a transistor. The multi-lamp failure control circuit device of claim 7, wherein the fail-safe open relationship is a field effect transistor.