JP3222329U - LED light - Google Patents

Abstract

Provided is an LED lamp that does not generate a high flasher phenomenon and a warning display due to an abnormal control of the LED lamp even when the lighting operation is performed for a long time. An LED group 1 in which three LEDs 1a are connected in series is made into one set, and six LED groups 1 are connected in parallel, and a high-flare prevention resistor 6 connected in parallel with the LED group 1 is provided. The high-flare prevention resistor 6 is 6Ω or more. If the power consumption of the LED lamp is about 17 W, the control unit does not mistakenly indicate that the LED lamp is out of order, and the high flasher phenomenon and the warning display due to the abnormal control of the LED lamp do not occur. If a resistance of 6Ω or more is used, the power consumption of the LED lamp is 17 W or more. [Selection] Figure 3

Description

  The present invention is an LED lamp mounted on a vehicle such as an automobile or a two-wheeled vehicle, specifically, an LED which does not generate a warning signal or a flasher phenomenon caused by an abnormal control of the LED lamp even when lighting operation is performed for a long time It relates to a lamp.

Turn signals are mounted on the left and right sides of vehicles such as automobiles. This blinker indicates the traveling direction by blinking a valve. Among the blinkers mounted on the left and right sides of a car or the like, for example, the valve of one of the blinkers may be cut. In this case, the control unit provided on the vehicle side detects that current does not flow to one of the valves, and brings the other blinker into the state of the high flasher that makes the blink cycle of the valve faster. This allows the driver to be notified that the valve has been cut.
Also in the tail lamp and the back lamp other than the turn signal lamp, a warning (an indicator light indicating an abnormality) or the like is displayed when the bulb is cut.

In recent years, LEDs have been used for lighting of vehicles and the like, signal lamps, and the like. Among these, with regard to the LED lamp, when the LED is lit, it is set to the predetermined power consumption equivalent to the bulb of a genuine turn signal. However, since the current flowing through the LED is small and the power consumption at this time does not reach the predetermined power consumption, the control unit determines that the LED lamp has failed (falsely recognizes), and the lighting cycle of the LED Control to make it faster (make it into a high flat state).
Also in the tail lamp and the back lamp other than the turn signal lamp, a warning (an indicator light indicating an abnormality) or the like is displayed when the power consumption differs from the genuine valve.

  As described above, in order to prevent the flasher phenomenon due to the misidentification of the control unit, as in the technology described in Patent Document 1, various measures are taken such as passing current through the switch element and the resistor before passing current through the LED. It has been subjected.

Patent No. 5947964 gazette

  The flasher phenomenon caused by the control abnormality of the LED lamp and the warning display occur because the current flowing to the LED is small and the power consumption at that time is less than the predetermined power consumption. In addition, since heat is generated by the light emission of the LED, when the LED lamp is operated for a long time, a high flasher phenomenon occurs because the generated heat reduces the resistance value of the resistor attached inside.

  Therefore, the inventor pays attention to the power consumption when the flasher phenomenon or warning display occurs due to the temporal change of the current value flowing to the LED lamp and the control abnormality of the control unit, and the value of the resistance connected in series to the LED Even if lighting is performed for a long time by setting the appropriate value and by not giving the heat generated from the LED to the resistor, the high flasher phenomenon caused by the control abnormality of the LED lamp and the warning display We found that it did not occur and completed the present invention.

  An object of the present invention is to provide an LED lamp which does not generate a flasher phenomenon or a warning display due to a control abnormality of the LED lamp even when lighting is performed for a long time.

  The LED lamp according to the present invention is a sequential LED lamp having a plurality of LEDs and a resistor connected in parallel with the LED, in order to solve the above-mentioned problems, wherein a resistor of 6 Ω or more is used. It is characterized by

  According to the present invention, a plurality of LEDs connect resistances of 6 Ω or more in parallel to the LEDs to realize the same power consumption of about 21 W as a genuine halogen bulb. Direct current flows to the LED and resistor through the constant current circuit. The current flowing at this time is about 0.05 A or more. Although the power consumption for operating the LED lamp normally is about 21 W, if the power consumption is about 17 W, the control unit does not misunderstand that the LED lamp is broken, and the control abnormality of the LED lamp occurs. The resulting flasher phenomenon does not occur. Therefore, by connecting a resistor of 6 Ω or more in parallel to the LED, the heat generated from the LED lowers the resistance value of the LED, and even if the power consumption of the LED decreases, the power consumption is 17 W or more Thus, the controller does not misunderstand that the LED lamp is broken, and the flasher phenomenon caused by the control abnormality of the LED lamp does not occur.

  In addition, the sequential LED lamp according to the present invention has a substantially cylindrical LED member including an LED substrate on which the LED is mounted, the LED is attached to the surface of the LED member, and the LED is mounted inside the LED member. The resistor is characterized in that it is inserted.

It is generally known that when the temperature is high, the resistance increases. Since the light emission heat generated by the light emission of the LED causes an increase in the resistance value of the resistor, the resistance and the LED are separated in order to minimize the light emission heat generated from the LED to the resistance. This makes it possible to prevent the occurrence of the flasher phenomenon due to the control abnormality of the LED lamp.
In addition, by providing a heat insulating member between the LED member and the resistor, it is possible to give the light emission heat generated from the LED as little as possible to the resistor, and the high flasher phenomenon due to the control abnormality of the LED lamp and the warning display It can prevent the occurrence.

Here, the type, color, and number of LEDs are not particularly limited, and an LED group including a plurality of LEDs may be handled as one LED. In this case, the respective LEDs may be connected in series or in parallel, or a combination of series connection and parallel connection may be used.
With regard to resistances, any resistance may be used regardless of the type and number of resistances as long as the resistance is 6 Ω or more, and a group of resistances may be handled as one resistance. In this case, the resistance of the entire resistor group may be 6 Ω or more, and the respective resistors may be connected in series or in parallel, or a combination of series connection and parallel connection may be used.
The heat insulating member may also be air (a structure in which a gap is provided between the LED member and the resistor), as long as it does not affect the control unit or the circuit.

According to the present invention, by connecting a plurality of LEDs in parallel with a resistance of 6 Ω or more to the LEDs, the controller does not misunderstand that the LED lamp is broken, and the flasher is caused by the control abnormality of the LED lamp. Phenomenon, warning display does not occur.
Further, since the light emission heat generated by the light emission of the LED causes a decrease in the resistance value of the resistor, the resistance and the LED are separated in order to minimize the light emission heat generated from the LED to the resistance. Alternatively, a heat insulating member is provided between the resistor and the LED member. Thereby, it is possible to prevent the occurrence of the highlighter phenomenon and the warning display due to the control abnormality of the LED lamp.

It is an appearance perspective view showing an LED lamp concerning an example of the present invention. (A) It is sectional drawing of the LED lamp which concerns on the Example of this invention. (B) It is arrangement | positioning figure which shows the positional relationship of LED in the LED lamp which concerns on the Example of this invention, high-frae prevention resistance, and a constant current circuit. 1 is a circuit diagram of an LED lamp according to an embodiment of the present invention.

  Hereinafter, an LED lamp according to an embodiment of the present invention (used as a substitute for a regular LED lamp attached to a car, hereinafter simply referred to as an "LED lamp") will be described in detail based on the drawings.

FIG. 1 is an external perspective view of an LED lamp according to an embodiment of the present invention. The LED lamp 10 according to the first embodiment has three LEDs 1a, one LED group 1 in parallel in series, and six LED groups 1 connected in parallel.
The LED 1 a is fixed to the surface of the LED fixing member 2 made of metal (made of aluminum) and having a cylindrical shape. The LED fixing member 2 is fixed to be integral with the base member 3 (made of aluminum). The outer peripheral shape of the end of the base member 3 on the side fixed to the LED fixing member 2 substantially matches the outer peripheral shape of the LED fixing member 2. The outer peripheral diameter of the LED fixing member is determined by the size of the regular LED lamp in the vehicle to be attached, but is approximately 1 to 3 cm, and the inner peripheral diameter is determined by the size of the high-flare prevention resistor 6 described later But about 0.5 to 2 cm.

As shown in FIG. 2, the high flat resistance 6 (6Ω) is held by the resistance holding member 5, and the protruding portion 5 a of the resistance holding member 6 is inserted into the inside of the LED fixing member 2. The high flat prevention resistor 6 is inserted into the inside of the second case 2.
The resistance holding member 5 is made of metal (made of aluminum), and the outer peripheral diameter of the lower portion (insertion side of the LED fixing member 2) is larger than the outer peripheral diameter of the upper portion (opposite side of the LED fixing member 2 insertion side). Is long, and the inner peripheral diameter of the resistance holding member is substantially the same frusto-conical cylindrical shape (the shape in which the through-hole is formed in a substantially frusto-conical shape) in both upper and lower portions. Then, in the lower part of the resistance holding member 5, a cylindrical projecting portion 5a whose outer peripheral diameter is shorter than the inner peripheral diameter of the LED fixing member and whose inner peripheral diameter is equal to the inner peripheral diameter of the resistance holding member 5 is integrated. It is fixed. The inside of the resistance holding member and the inside of the protrusion are continuous. Inside the resistance holding member 5, a metal fitting (not shown) for holding the high flat preventing resistance 6 fixed to the inner peripheral wall thereof is provided. The high-fracture prevention resistance 6 is held by the resistance holding member 5 using this metal fitting. At this time, a gap is provided between the high flat prevention resistor 6 and the resistance holding member 5. By configuring in this manner, air can play a role as a heat insulating material.

The anti-high-fray resistor 6 uses a plate-like resistor commercially available, but its resistance value is 17 Ω. The high flat preventing resistance 6 is held by the resistance holding member 5 using a metal fitting. At this time, the high flare prevention resistor 6 is held by the resistance holding member 5 so as to be housed inside the resistance holding member 5 and the inside of the projecting portion 5 a.
The protrusion 5 a of the resistance holding member 5 is inserted into the inside of the LED fixing member 2, and the resistance holding member 5 is connected to the LED fixing member 2 using a connecting member 7 (connection fitting).

  The constant current circuit 100 connects a constant current diode in parallel, and stably supplies a constant current to the LED 1 a and the high flat prevention resistor. The constant current circuit 100 is disposed inside the LED fixing member 2.

  Next, the circuit configuration of the LED, the resistor, and the constant current circuit will be described with reference to FIG. Three LEDs 1a are connected in series to make an LED group 1 as one set. A resistor 4 is connected in series to the LED group 1. The LED group 1 and the resistor 4 form an LED-resistor pair, and six LED-resistor pairs are connected in parallel. Furthermore, the high flat resistance 6 is connected in parallel to the LED-resistor set. The LED 1 a, the resistor 4, and the high flat preventing resistor 6 constitute one circuit in a form connected to the constant current circuit 100.

  The current supplied from the on-vehicle battery (not shown) flows to the constant current circuit 100, and thereafter, flows to the high flat prevention resistor 6, the resistor 4 and the LED 1a. Thereafter, the current returns to the battery via the constant current circuit 100.

The LED lamp configured in this way was attached to a general vehicle and tested for lighting for 5 minutes. As a result, no high flasher phenomenon and warning display occurred. On the other hand, the LED lamp which did not have the high flat resistance 6 was tested for lighting for 5 minutes when the initial power consumption was 21 W. After 4 minutes, the high flasher phenomenon occurred.
As described above, according to the present invention, it has been confirmed that the high flasher phenomenon caused by the control abnormality of the LED lamp does not occur even when the sequential operation is performed for a long time.

Claims (3)

With multiple LEDs,
An LED lamp having a resistor connected in parallel with the LED,
The said resistance is an LED lamp using 6 ohms or more. A substantially cylindrical LED member including an LED substrate on which the LED is mounted;
The LED is attached to the surface of the LED member,
The LED lamp according to claim 1, wherein the resistor is inserted inside the LED member. The LED lamp according to claim 2, further comprising a heat insulating member between the LED member and the resistor.

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