JP2770649B2 - AC adapter with battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC adapter widely used for terminal equipment such as a personal computer and a word processor, or electronic equipment such as a communication terminal such as a modem and a digital service unit (DSU).

[0002]

2. Description of the Related Art An AC adapter is used to generate a DC power supply required for an electronic device from a commercial AC power supply. However, if there is no battery, the DC output is cut off when the commercial AC power supply is cut off. There is no problem if the electronic device has a battery backup, but in many cases the battery backup is not performed. The commercial power interruption may occur not only due to a power outage, but also due to a premature power interruption in an office and a breaker operation at home due to overuse of other home electric appliances. If the power is turned off while working with a personal computer or word processor, or while communicating with a modem or DSU, the work up to that point may be lost. For this reason, incorporating a battery into the AC adapter is a highly versatile power supply backup method. Thereby,
On the electronic device side, there is no need to prepare a battery and a space for accommodating the battery.

[0003]

However, as shown in FIG. 4, in a style in which the battery 2 is simply incorporated into a conventional AC adapter and the heat-generating component 7 is cooled by the internal radiator 18, the case 16 becomes large. In addition, the performance of the battery 2 is adversely affected in terms of heat. Inevitably, heat is generated inside the AC adapter main body, and the battery 2 itself generates heat while being charged, so that the temperature of the battery 2 becomes too high and the battery performance is deteriorated. If the influence of this heat generation is to be suppressed, the parts 19 and the space 17 of the AC adapter main body must be enlarged, and the case 16 must be enlarged, which is disadvantageous in terms of size and weight. If it becomes heavier and heavier, it is inconvenient to carry it. There is also a method of lowering the temperature by opening ventilation holes in the AC adapter, but spilling metal staples, clips, solder debris, or liquids such as water or coffee may cause a short circuit in the internal circuit or cause a failure. In some cases, safety was not perfect.

[0004] The present invention overcomes these drawbacks, skillfully radiates heat from the body circuit heat-generating parts while maintaining safety by substantially sealing the body circuit portion, and makes the shape small and light.
Another object of the present invention is to provide a battery-equipped AC adapter that suppresses thermal stress on the battery and makes effective use of battery performance.

[0005]

SUMMARY OF THE INVENTION An AC with a battery according to the present invention is provided.
The adapter is an AC adapter incorporating a battery, wherein a through hole is provided vertically between the AC adapter main body and the battery mounting part, and a radiator is provided on a side surface of the through hole on the side of the AC adapter main body. I have.

[0006]

Next, the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. FIG. 1 (a) is a perspective view, FIG. 1 (b) is a sectional view, FIG. 2 is a front view showing the state of use of this embodiment, and FIG. It is a perspective view which shows the Example of FIG.

In this embodiment, basically, a through hole 1a is provided in the vertical direction between an AC adapter main body contained in an AC adapter case 1 and a battery mounting portion containing a battery 2. The radiator 3 is provided on the side of the AC adapter main body side of the through hole 1a. That is, FIG.
As shown in FIG. 1, A including heat-generating components 7 and other components 9
A through-hole 1a is provided between the C-adapter main body and the battery mounting section containing the battery 2, and a heat-generating component 7 of the AC adapter main-body is provided on the side of the through-hole 1a on the side of the AC adapter main body.
Is provided. The main body circuit other than the radiator 3 is partitioned by the main body side surface 1b which is in close contact with the radiator 3 so as not to come out of the through hole 1a. This allows AC
Suppress the temperature rise in the adapter main body, apply small parts 9 to the main body circuit, and reduce the space 10 due to the small amount of accumulated heat, thereby reducing the size and suppressing the thermal effect on the battery 2 It is.

FIG. 2 is a diagram for explaining the use of an embodiment of the present invention having an AC plug 11, and FIG.
Plugged in. FIG. 2 is the same as FIG. 1 except that it is plugged into an AC plug 11 and an AC outlet 12. In FIG. 2, the through hole 1a has A
The radiator 3 provided with the heat-generating component 7 is cooled by the ventilation 13 entering from the bottom surface of the C adapter and the ventilation 14 entering from the notch Ic, thereby achieving the above-described object. Notch Ic
Therefore, even if the AC outlet 12 blocks the ventilation 13, the ventilation 14 remains, so that fail-safe operation (minimum heat radiation) can be achieved. Since the radiator 3 is not provided on the outer surface of the AC adapter with a battery according to the present embodiment, which is in contact with human hands, it is considered that the radiator 3 does not impair the safety.

Another embodiment shown in FIG. 3 further enhances safety. A plastic grid 1d is provided at the entrance of the through hole 1a to prevent the radiator 3 from being intentionally touched. Further, a ventilation hole 1e is provided in a connection portion between the adapter main body and the battery mounting portion, and a ventilation hole 1f is provided in the battery mounting portion to further improve the above-described effect. Ventilation hole 1
e, a relatively low voltage (usually 20
Volts or less) to the battery 2
There is no problem with the setting of e and security. The ventilation hole 1f is for maintaining the battery performance by radiating heat during charging of the battery 2 itself. Like the ventilation hole 1e, a low voltage does not impair safety. Even if liquid leaks from battery 2, A
Since it is separated from the C adapter main body, a secondary effect of not causing a failure can be expected.

In the above embodiment, the switching power supply system has been described as an example. However, the present invention can also be applied to a dropper system. For example, a similar effect can be expected by attaching a three-terminal regulator or a transformer to a radiator. The shape and specification of the battery 2 are arbitrary, and the ventilation holes 1e and 1f may be formed in a vertical row. The heat-generating component 7 has a high heat radiation effect, can be mounted near the through-hole 1a, may be arbitrarily selected by an AC adapter design, and may be the space 10 in some cases, and is not particularly limited. . The embodiment shown in FIG. 3 does not impair the safety even on the high pressure side.

[0012]

As described above, the present invention maintains the safety from metal debris and liquid due to the substantial sealing property,
The radiator provided in the through hole between the AC adapter main unit and the battery mounting unit dissipates heat more efficiently from the heat generating parts of the main unit. As a result, the AC adapter with battery can be reduced in size and weight safely, and its practical value can be improved. Great effect. It should be noted that the present invention covers all claims.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of the present invention, in which (a) is a perspective view and (b) is a sectional view.

FIG. 2 is a front view showing a use state of one embodiment of the present invention.

FIG. 3 is a perspective view of another embodiment of the present invention, which is a highly-completed embodiment in which safety is further improved.

4A and 4B are views showing a conventional example, in which FIG. 4A is a perspective view, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 AC adapter case 1a Through hole 1b Body side surface 1c Notch 1d Plastic lattice 1e, 1f Ventilation hole 2 Battery 3 Radiator 4 AC code 5 DC code 6 Battery cover 7 Heat generating component 8 Mounting screw 9, 19 Other components 10, 17 Space 11 AC plug 12 AC outlet 13 Ventilation from bottom 14 Ventilation from notch Ic 15 Ventilation (outflow) 16 Case 18 Internal radiator

Claims (6)

(57) [Claims] In an AC adapter incorporating a battery, a through hole is provided in a vertical direction between an AC adapter main body and a battery mounting part, and a radiator is provided on a side surface of the through hole on the side of the AC adapter main body. An AC adapter with a battery. 2. The AC adapter with a battery according to claim 1, wherein a plastic lattice is provided at an entrance of the through hole. 3. The AC adapter with a battery according to claim 1, wherein a notch extending to the through hole is provided at a lower portion of a connection portion where the battery mounting portion and the AC adapter main body are connected. . 4. The battery-equipped battery according to claim 1, wherein a first ventilation hole extending to the through hole is provided at the connection portion between the battery mounting portion and the AC adapter main body portion. AC adapter. 5. The AC adapter with a battery according to claim 1, wherein the AC adapter has both the notch and the first ventilation hole. 6. The AC adapter with a battery according to claim 1, wherein a second ventilation hole is provided in the battery mounting portion.