KR100600134B1 - Digital clock for vehicle - Google Patents

Abstract

The present invention relates to a vehicle-type digital clock of the LCD system, in place of the backlight module of the existing LCD light distribution, a plurality of LEDs are arranged on the PCB properly arranged, and around the LED toward the LCD back By adopting a new backlight structure made by installing its own reflector that can be attached and detached from the PCB while acting as a light reflection, it has the advantages of cost reduction and light distribution performance improvement, and makes it easy for the designer to control the light distribution performance by adjusting the number of LEDs. The present invention relates to a vehicle digital clock having an advantage in that light distribution matching with other displays around a clock can be improved.

Vehicle, digital clock, back light, PCB, LED, reflector, LCD

Description

Digital clock for vehicle             

1 is a front view showing a state where a normal digital clock is installed in an instrument panel;

2A and 2B are perspective views illustrating an LCD digital clock according to the prior art;

3A and 3B are perspective views of the LCD digital clock according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: digital clock 101: PCB

101a: mounting hole 102: LED

103: reflector 104: mounting projection

104a: hook hook 105: LCD

105a: lead

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital clock for a vehicle, and instead of a backlight module having a conventional LCD light distribution, a plurality of LEDs are properly arranged and installed on a PCB, and the LED reflects light toward the rear of the LCD. By adopting a new backlight structure made by installing its own reflector that can be detached and detached from the PCB, it has the advantages of cost reduction and light distribution performance improvement, and enables designers to easily control light distribution performance by adjusting the number of LEDs. Accordingly, the present invention relates to a vehicle digital clock having an advantage in that light distribution matching with other displays around a clock can be improved.

In general, the vehicle is equipped with a variety of electronic equipment for the convenience of the driver and passengers, one of such convenience electronic equipment is a digital clock that displays the current time in the form of 'hour: minute: second' on the display There is).

In the digital clock of the vehicle, when the driver inserts the ignition key into the key cylinder and turns the ignition key to the ACC of the ignition switch, the battery power is applied to the IC chip through the stabilization circuit. Outputs a control signal for displaying the counting time on the display, so that the display indicates the time.

The digital clock is usually installed at a predetermined position in front of a vehicle, such as an instrument panel, and the accompanying FIG. 1 shows a state in which a vehicle digital clock is installed at one side of the instrument panel.

In FIG. 1, reference numeral 1 denotes an instrument panel, reference numeral 2 denotes a crash pad, and reference numeral 10 denotes a digital clock.

On the other hand, in the method of employing a liquid crystal display (hereinafter referred to as LCD) of the display method of the vehicle digital clock, the backlight module is installed on the PCB toward the rear of the LCD.

2A and 2B are perspective views illustrating an LCD digital clock according to the prior art, in which FIG. 2A illustrates an assembled state and FIG. 2B illustrates a separated state.

First, an LCD 14 is installed on the PCB 11 as a display means for displaying the current time numerically. The LCD 14 is provided on the PCB 11 to receive a signal and power for driving. It has a plurality of leads 14a connected to each terminal by soldering, and a diffuser plate (not shown) is attached to the rear surface thereof.

Next, a backlight module 12, which serves as a light distribution of the LCD, is installed on the PCB 11 on the rear side of the LCD 14, and the backlight module 12 includes a plurality of LEDs 13 on the front surface. The LED 13 generates light from the LCD 14 back side, and the module itself serves as a reflector.

The backlight module 12 is also configured to receive the necessary power from the PCB 11 through a lead (not shown), and the thin transparent membrane 12a is disposed on the front surface of the module 12 where the LED 13 is located. It has a structure covered in the state bonded by this silicone bonding means.

However, the digital clock made as described above has the following problems.

First, in order to match with other displays (eg, various warning lights) around the digital clock, it is necessary for the designer to easily adjust the light distribution performance in the digital clock.

However, in the case of a backlight module conventionally adopted for LCD light distribution, it is not easy to adjust the light distribution performance by a designer, so it is not easy to match light distribution with another display.

In addition, the conventional backlight module performs a reflector function when emitting LEDs by itself, but does not sufficiently reflect light toward the back of the LCD, and thus does not satisfy sufficient light distribution performance required to be matched with other displays of the vehicle. There is a situation.

In addition, the price of the backlight module for LCD light distribution is increasing the cost.

Therefore, the present invention has been invented to solve the above problems, and in place of the conventional backlight backlight module used in the LCD, a plurality of LEDs are properly arranged on the PCB and installed around the LEDs. By adopting a new backlight structure, which reflects the light toward the LCD backside and installs its own reflector, which is free from attachment and detachment from the PCB, it has the advantages of cost reduction and light distribution performance improvement, and designers can control the light distribution performance by adjusting the number of LEDs. It is possible to facilitate, through which the purpose is to provide a vehicle digital clock having the advantage that the light distribution matching with other displays around the clock can be improved.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a vehicle digital clock comprising an LCD for displaying time, a backlight means serving as a light distribution of the LCD, and a PCB for applying a driving signal and power to the LCD.

As the backlight means, a plurality of LEDs arranged on the PCB, the LCD is installed in such a way as to surround the LED array on the PCB, and the LCD is located on the front side so that the light emitted from the LED is back through the inner surface of the LCD. It is characterized by having a backlight structure composed of a reflector reflecting toward.

In particular, the reflector is provided with a rectangular case structure having an opening and closing front and rear surface is characterized in that it has a removable means for fixing / detachable on the PCB.

In addition, the detachable means is characterized in that the mounting projection having a resilient hook structure, the end of which is fitted into the mounting hole of the PCB protruding from the left and right sides of the reflector long.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to an LCD type digital clock for a vehicle. Instead of installing a conventional backlight module, a new backlight structure formed by installing an LED on a PCB and a reflector around the LED is adopted, thereby reducing the cost and In addition, the present invention relates to a digital clock for a vehicle having an advantage of allowing the designer to easily adjust the light distribution performance by adjusting the number of LEDs, thereby improving light distribution matching with other displays.

Referring to the accompanying drawings, the configuration of the present invention will be described.

3A and 3B are perspective views illustrating an LCD digital clock according to the present invention, in which FIG. 3A shows an assembled state and FIG. 3B shows a separated state.

In the accompanying drawings, reference numeral 101 denotes a PCB, 104 denotes an LCD, and the basic configuration of the PCB and the LCD is the same as in the related art.

The digital clock 100 of the present invention improves the backlight structure that serves as the light distribution of the LCD 105. First, a plurality of LEDs 102 are provided on the PCB 101 to provide light for light distribution.

Of course, the LED 102 is made to emit light by the power applied from the PCB 101, these LED 102 is appropriately arranged at the position of the PCB 101 corresponding to the space inside the reflector 103 to be described later Is installed.

The LED 102 may be a high-brightness LED can be used to satisfy a sufficient light distribution performance, and thus, in the present invention, the LED 102 has a structure that is installed directly on the PCB 101, other displays around the clock The number of LED installations can be easily adjusted by the designer according to the level of light distribution required for matching with the bar, and thus the light distribution performance can be easily adjusted, and the matching with the surrounding display can be improved in a simple manner.

Meanwhile, a reflector 103 is installed around the LED 102 on the PCB 101 to reflect the light emitted from the LED toward the back of the LCD 105.

The reflector 103 is installed so as to surround the LED 102 array on the PCB 101, which is installed directly on the PCB 101, preferably in a structure that can be easily detached / attached from the PCB. .

The structure of the reflector 103 will be described in more detail. In the present invention, the reflector 103 is provided in a rectangular case structure in which front and rear surfaces are opened, and an LCD 105 is installed at its front surface and an inner surface at its inner surface. The reflective material is attached (coated) to reflect the light from the LED 102 positioned toward the back of the LCD 105.

As described above, the LCD 105 is installed to cover the front of the reflector 103. Of course, the LCD 105 is soldered to each terminal on the PCB so that the signal and power can be applied from the PCB 101. There are two leads 105a, and in the present invention, the leads 105a are connected to the PCB 101 through the reflector 103 outside.

In addition, the left and right rear end portions of the reflector 103 have elasticity, and the mounting protrusion 104 having a locking hook 104a formed at the end thereof is protruded to the rear, and the two mounting protrusions 104 on both the left and right sides are formed. Is inserted into each mounting hole 101a formed in the PCB 101, the reflector 103 is to be fixed on the PCB (101).

In addition, by the application of the hook structure as described above, when the reflector 103 of the present invention is pressed by the hook hook 104a to be released from the back of the PCB 101, the mounting protrusion 104 is the PCB 101 It can be easily removed while being pulled out of the mounting hole 101a.

In this way, in the vehicle digital clock of the present invention, in place of the relatively expensive backlight module, a plurality of LEDs installed on the PCB, and the PCB is installed around the LEDs and serve as light reflection toward the LCD back side. By adopting a new backlight structure made of a detachable reflector from the, there is an advantage of cost reduction, and also has the advantage that the light distribution performance is more easily adjusted by adjusting the number of LED installation.

As described above, according to the vehicle digital clock according to the present invention, a plurality of LEDs are appropriately arranged and installed on the PCB in place of the conventional LCD backlight module, and the LCD around the LEDs is installed. By adopting a new back light structure that reflects the light toward the back and installs its own reflector, which is detachable from the PCB, it has the advantages of cost reduction and light distribution performance improvement, and designers can control the light distribution performance by adjusting the number of LEDs This may facilitate the light distribution matching with other displays around the clock.

Claims (3)

delete A plurality of LEDs including an LCD for displaying a time, a backlight means serving as a light distribution of the LCD, a PCB for applying a driving signal and power to the LCD, wherein the plurality of LEDs are arranged on the PCB as the backlight means; In the digital clock for a vehicle having a backlight structure that is installed to surround the LED array on the PCB and the reflector to reflect the light from the LED toward the rear of the LCD through the inner surface so that the LCD is located in the front, The reflector is a vehicle digital clock characterized in that it has a rectangular case structure having an open front and rear surface has a detachable means for fixing / detachable on the PCB. The method according to claim 2, The detachable means, And a mounting hook having a resilient hook structure having an elastic end and fitted into a mounting hole of the PCB to protrude rearwards on both left and right sides of the reflector.

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