JPH11176216A - Emergency luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emergency luminaire in which the height of a luminaire body is small and deterioration of a storage battery caused by heat from a heat generating part can be suppressed. SOLUTION: A circuit block 10 and a battery case 4 are contained inside a substantially cylindrical luminaire body 1. The circuit block 10 is constituted of a case 11, a printed circuit board 12 and a terminal block 13. A terminal block container 11b of the case 11 in the circuit block 10 projects from the upper portion of a printed circuit board container 11a sideways on a side opposite to the printed circuit board 12. Consequently, it is possible to reduce the height of the circuit block 10 in comparison with the prior art without changing the dimension of the printed circuit board 12, thus resulting in reduction of the height of the luminaire body 1. Moreover, a heat generating part 14 is disposed near the upper portion of the case 11, so that clearance is formed between the opposite packaging surface of the printed circuit board 12 and the case 11, thereby relieving the heat from the heat generating part 14 so as to suppress the deterioration of a storage battery 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency lighting device for turning on a light source by a storage battery in an emergency such as a power failure.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show an example of a conventional emergency lighting device. The fixture main body 1 'of the emergency lighting fixture is formed in a substantially cylindrical shape having an open lower surface, and is embedded and disposed in a ceiling or the like. A bowl-shaped reflecting mirror 2 is provided at an opening of the instrument body 1 ', and a lamp 3 such as a halogen lamp is provided as a light source at a substantially central portion of the reflecting mirror 2.

On the other hand, a circuit block 10 'and a battery case 4' are housed above the reflecting mirror 2 in the instrument body 1 '. The circuit block 10 'is a box-shaped case 1.
1 ′, a printed circuit board 12 arranged in an upright state in a printed circuit board storage section 11 a ′ provided below the case 11 ′, and a recess 11 b ′ in which the upper side wall of the case 11 ′ is recessed downward. And a terminal block 13 disposed at the same time.

[0004] The printed circuit board 12 receives a power supply from an external commercial power supply (AC power supply) via a terminal block 13 to charge the storage battery 5 and a storage circuit when the power supply from the commercial power supply is stopped. Circuit components constituting a circuit for lighting the lamp 3 using the power supply 5 as a power supply are mounted. Note that such circuit components include a heat-generating component (for example, a transformer for stepping down a power supply voltage of a commercial power supply) 14 that generates heat when energized.

The terminal block 13 is connected to a power supply line from an external commercial power supply, and is electrically connected to circuit components mounted on the printed circuit board 12 by lead wires (not shown) or the like. ing. On the other hand, the battery case 4 'is formed in a shape corresponding to substantially half of the octagonal prism, and is arranged back to back with the case 11' of the circuit block 10 '. Also, four storage batteries 5 are provided inside the battery case 4 '.
It is stored in layers. The electrical connection between the storage battery 5 and the circuit components mounted on the printed circuit board 12 is made by appropriate means such as lead wires and connectors.
Although the number of storage batteries 5 increases or decreases according to the power consumption of the light source used, the same battery case 4 ′ is used regardless of the number of storage batteries 5 used even when space is created in the battery case 4 ′. Is used.

[0006]

By the way, in the above conventional example, the printed circuit board 12 and the terminal block 13 are arranged so as to overlap with the case 11 'in the vertical direction (vertical direction). The height dimension of 1 'becomes higher,
It may not be possible to dispose (construct) the so-called ceiling floor behind the ceiling.

If the temperature of the storage battery 5 rises due to heat from the heat-generating components 14 mounted on the printed circuit board 12, the life of the storage battery 5 will be shortened and the characteristics will be deteriorated. In order to avoid such a problem, there has been proposed a configuration in which only the heat-generating component 14 is mounted on another printed circuit board and arranged at a position distant from the battery case 4 ′. However, there are disadvantages such as an increase in cost and an operation of electrically connecting two printed circuit boards, which deteriorates the assemblability. In addition,
In the above conventional example, since the storage battery 5 is stored in the battery case 4 'in a two-tiered manner, two types of long and short heat transfer paths indicated by symbols A and B in FIG. The amount of heat transmitted to the upper storage battery 5 through the shorter heat transfer path A increases, and only the temperature of the storage battery 5 becomes higher than the other storage batteries 5. As a result, there is a problem that the surface temperature varies among the plurality of storage batteries 5 and the life and characteristics of each storage battery 5 also vary.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the height of an appliance body and to suppress the deterioration of a storage battery due to heat generated by a heat-generating component. A lighting fixture is provided.

[0009]

According to the present invention, in order to achieve the above object, a storage battery, a printed circuit board constituting at least a charging circuit of the storage battery and having mounted thereon circuit components including heat-generating components, And a terminal block connected to an external power source is arranged so as to protrude from the upper side to the side opposite to the printed circuit board, and at least an emergency power supply from the storage battery is provided. A light source that is lit by receiving power supply, wherein at least a circuit block is housed in a substantially box-shaped appliance main body, and a storage battery is arranged below the terminal block. By being arranged to protrude sideways from the top, the height of the instrument body can be reduced without changing the dimensions of the printed circuit board, and
Since the heat of the heat-generating components is radiated upward from the space created between the printed circuit board and the terminal block, it is difficult for the heat of the heat-generating components to be transmitted to the storage battery, preventing a rise in temperature and suppressing the deterioration of the storage battery. Become.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. Since the basic configuration of this embodiment is the same as that of the conventional example, common portions are denoted by the same reference numerals and description thereof is omitted. As shown in a side sectional view of FIG. 1 and a partially omitted perspective view of FIG. 2, a bowl-shaped reflecting mirror 2 is disposed in a lower opening of a substantially cylindrical instrument main body 1,
The circuit block 10 and the battery case 4 are housed in the appliance main body 1 above it. The circuit block 10 is the case 1
1, a printed circuit board 12 and a terminal block 13.

The case 11 of the circuit block 10 according to the present embodiment is formed in a substantially box shape that opens sideways and upwards, and a printed circuit board storage portion 11a in which the printed circuit board 12 is stored and arranged in an upright state. A terminal block storage section 11b projecting from the upper portion of the board storage section 11a to the side opposite to the printed circuit board 12 and opening upward and laterally to store the terminal block 13; In addition, the upper surface of the terminal block housing 11b is formed substantially flush. Note that the printed circuit board 12 and the terminal block 13 are electrically connected by lead wires (not shown).

The printed circuit board 12 has mounted thereon circuit components constituting a charging circuit for charging the storage battery 5 and a circuit for lighting the lamp 3. It is arranged in. That is, heat radiation can be promoted by arranging the heat generating component 14 near the upper part of the case 11 opened upward. Further, since the printed circuit board 12 is housed in the printed circuit board housing section 11a with a gap provided between the anti-mounting surface of the printed circuit board 12 and the bottom surface of the case 11 on the printed circuit board housing section 11a, heat is also generated from the gap. The heat of the component 14 can be released.

On the other hand, the battery case 4 is formed in a shape corresponding to substantially half of the octagonal prism similarly to the conventional example, and is arranged below the terminal block housing portion 11b of the case 11 with the printed board housing portion 11a back to back. Here, the height of the battery case 4 in the present embodiment is lower than that of the conventional battery case 4 ', and a plurality (four) of storage batteries 5
They are stored and arranged in parallel in stages.

By arranging the storage batteries 5 in one stage in the battery case 4, two types of heat-generating components
4 becomes one kind (shown by symbol B in FIG. 1) and the distance can be made longer than in the conventional example.
The variation in temperature between the storage batteries 5 can be reduced, and the amount of heat transfer itself can be reduced, so that the surface temperature of the storage battery 5 can also be reduced. Furthermore, since a gap is provided between the printed circuit board 12 and the case 11 and the upper part of the case 11 is opened,
The convection of the air heated by the heat from the air is promoted, and the heat can be efficiently released to the outside of the appliance body 1, whereby the amount of heat transfer to the storage battery 5 can be reduced. As a result, the characteristics of the storage battery 5 are stabilized and the surface temperature of the storage battery 5 is lowered, so that the life of the storage battery 5 can be prolonged.

The feature of the present embodiment is that the terminal block storage 11b of the case 11 of the circuit block 10 is projected from the upper part of the printed circuit board storage 11a to the side opposite to the printed circuit board 12. Therefore, as shown in FIG. 3, the height of the circuit block 10 in the present embodiment (see FIG. 3A) is not changed in the present embodiment (see FIG. Can be reduced, and as a result, the height of the instrument body 1 can also be reduced. In the present embodiment, the printed circuit board housing portion 11a of the case 11 of the circuit block 10 and the battery case 4
Has the same horizontal cross-sectional shape as that of the conventional example, the height can be reduced without changing the bottom area of the appliance body 1 from the conventional example, and the common storage battery 5 can be used with the conventional example. There is an advantage that the repair parts and the like can be shared.

[0016]

According to the present invention, as described above, a storage battery, a printed circuit board which forms at least a charging circuit of the storage battery and on which a circuit component including a heat-generating component is mounted, and a state in which the printed board stands up to one side. A circuit block that is disposed and has a terminal block connected to an external power supply protruding from the upper side to the side opposite to the printed circuit board, and a light source that is turned on at least in an emergency by receiving power supply from a storage battery Since at least the circuit block is housed in the substantially box-shaped device main body and the storage battery is arranged below the terminal block, the terminal block is disposed so as to protrude from the upper side of the circuit block to the side. As a result, the height of the device body can be reduced without changing the dimensions of the printed circuit board. There because heat is radiated upward, heat of the heating part prevents the temperature rise in easily transmitted to the battery, there is an effect that it is possible to suppress the deterioration of the battery.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an embodiment.

FIG. 2 is a perspective view with a part omitted from the above.

FIG. 3 is an explanatory diagram for explaining the above.

FIG. 4 is a partially omitted perspective view showing a conventional example.

FIG. 5 is a side sectional view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Appliance main body 4 Battery case 5 Storage battery 10 Circuit block 11 Case 11a Printed circuit board storage part 11b Terminal block storage part 12 Printed circuit board 13 Terminal block 14 Heat generation component

Claims (1)

[Claims] 1. A storage battery, a printed circuit board constituting at least a charging circuit of the storage battery and having mounted thereon circuit components including a heat-generating component, and a printed circuit board arranged in a state of standing up to one side and connected to an external power supply. A terminal block to be connected is provided with a circuit block disposed so as to protrude from the upper side to the side opposite to the printed circuit board, and a light source that is turned on by receiving power supply from a storage battery at least in an emergency, and has a substantially box shape An emergency lighting device comprising at least a circuit block housed in a device main body and a storage battery disposed below a terminal block.