JP2007121593A - Camera apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera apparatus achieving miniaturization and advanced design by efficiently radiating the heat of a light source. <P>SOLUTION: The camera apparatus has: a light source unit 2 where an LED 20 is housed in a housing formed of material excellent in heat radiating property; and a main body unit 1 where a recessed part for holding the light source unit 2 is formed while a predetermined gap 30 is kept between the light source unit 2 and the main body unit 1, and where a control circuit for controlling the LED 20 is housed in the housing. The light source unit 2 has a plurality of fins for forming a channel of air on its surface on the main body unit 1 side. The heat of the LED 20 is radiated by the plurality of fins of the light source unit 2, whereby the air in the channel formed by the plurality of fins is warmed and an updraft is generated, and then air flows in the gap between the light source unit 2 and the main body unit 1 by the updraft. The heat of the LED 20 is therefore cooled down by the flowing air and efficiently radiated. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a camera device having a light source.

  For security purposes, there is a camera device that detects a human movement with a pyroelectric sensor and automatically captures the moment with a camera. This type of camera device installed outdoors has a light for night photography. A light bulb such as a halogen bulb is generally used as the light source of this light, but it is difficult to reduce the size. Therefore, a camera device using a small light emitting diode (LED) as a light source has been developed (for example, see Patent Document 1).

  However, when an LED is used as the light source, heat is accumulated inside the device due to the heat generated by the LED, which may adversely affect the pyroelectric sensor and other devices. Moreover, depending on the case, there exists a problem that LED exceeds junction temperature by own heat_generation | fever.

Then, in the lighting fixture using LED, the trial which suppresses a temperature rise is made by improving heat dissipation. For example, the luminaire described in Patent Document 2 has an LED substrate on which a plurality of LED lamps are disposed in a state where the LED substrate is in contact with a substrate formed of a material having excellent heat dissipation.
JP 2005-101881 A JP 2002-33006 A

  However, in the example shown in FIG. 2 of Patent Document 2, since the power supply board is also provided in the base body, the heat of the LED lamp may travel through the base body and heat the power supply board, which may have an adverse effect. In the example shown in FIGS. 4, 7, and 9 of Patent Document 2, the LED substrate is provided in the base and the power supply circuit is provided in the support. In this case, the base and the support are completely separated. As a result, the entire instrument becomes large.

  Therefore, an object of the present invention is to provide a camera device that realizes downsizing and high-level design by making it possible to efficiently dissipate heat from a light source.

  In order to solve the above problems, the camera device of the present invention is a light source unit in a state where a predetermined gap is maintained between the light source unit housing the light source in a housing formed of a material having excellent heat dissipation and the light source unit. And a main body unit in which a control circuit for controlling the light source is housed in the housing, and the light source unit forms an air flow path on the surface on the main body unit side. Therefore, a configuration having a plurality of fins is provided.

According to the present invention, the heat of the light source is radiated by the plurality of fins on the surface of the light source unit on the body unit side, so that the air in the flow path formed by the plurality of fins is warmed, and the rising airflow Therefore, the rising airflow causes the wind to flow through the gap between the light source unit and the main unit. As a result, the heat of the light source is cooled by the wind flowing through a predetermined gap between the light source unit and the main unit and is efficiently dissipated, so that it is not transmitted to the main unit. Further, since the light source unit is held so as to be embedded in the recess formed in the main body unit, it can be miniaturized while maintaining a sense of unity, and a high degree of design can be realized.

  The first invention of the present application is formed of a material excellent in heat dissipation, a light source unit containing a light source, and a recess for holding the light source unit in a state where a predetermined gap is maintained between the light source unit, A main unit having a control circuit for controlling a light source housed in the housing and a camera for photographing, the light source unit for forming an air flow path on the surface on the main unit side The camera device has a plurality of fins and dissipates heat by the air flowing through the gap. The heat of the light source is dissipated by the plurality of fins on the surface of the light source unit on the body unit side. Since the air in the flow path formed by the fins is warmed and an ascending air current is generated, the ascending air current causes the air to flow through the gap between the light source unit and the main body unit. As a result, the heat of the light source is cooled by the wind flowing through a predetermined gap between the light source unit and the main unit and is efficiently radiated, so that it is not transmitted to the main unit. Further, since the light source unit is held so as to be embedded in the recess formed in the main body unit, it can be reduced in size while maintaining a sense of unity, and a high degree of design can be realized. Further, it is possible to prevent damage to the optical system parts and electrical system parts of the camera due to heat.

  2nd invention of this application installs a light source unit in the vertical direction upper part with respect to the camera of a main body unit, and there exists an effect | action that the heat | fever generated from a light source unit moves to the upper part by the convection of air, There is an effect that damage to the optical system of the camera can be prevented.

  According to a third invention of the present application, the light source unit has a light source unit side connector for electrically connecting the light source and the control circuit on the surface on the main unit side, and the main unit is on the surface on the light source unit side. The camera unit has a body unit side connector to be connected to the light source unit side connector, and a waterproof packing is provided around the connection portion between the light source unit side connector and the body unit side connector. There is a predetermined gap between the main unit and rainwater and the like will enter the gap. The connector on the light source unit side and the main unit side that are the connection between these light source units and the main unit Since waterproof packing is provided around the connector, rainwater etc. enters the light source unit and the main unit from these connections. It is possible to prevent the. As an effect thereof, it is possible to prevent damage to the light source unit and the main body unit, particularly electric system parts.

  According to a fourth aspect of the present invention, the light source unit includes a substrate on which the light source is disposed on the front side, a back side member on which a plurality of fins are formed, a front side member that forms a casing together with the back side member, and a light source on the substrate. And a waterproof packing that seals a contact surface between the front side member and the back side member, and is interposed between the light source and the front side member. Heat conduction from the light source to the front side member can be improved by the heat conduction sheet thus made, and heat dissipation can be improved. Further, by sealing the contact surface between the front side member and the back side member with the waterproof packing, it is possible to prevent rainwater or the like from entering the light source unit. As an effect thereof, it is possible to prevent damage to the light source unit and the main body unit, particularly electric system parts.

  According to a fifth aspect of the present invention, the housing of the light source unit is made of metal, and the light source unit can efficiently radiate heat by being made of metal having excellent heat dissipation.

  6th invention of this application can make the heat of a light source unit hard to be transmitted by making a main body unit into resin made from low heat conductivity.

  The seventh invention of the present application is a camera device in which the light source is a light emitting diode, and a small camera device can be realized by using a small light emitting diode as the light source. As an effect, the degree of freedom of design is increased by downsizing.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a perspective view of a camera device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state where a light source unit and a decorative panel of the camera device of FIG. 1 are removed, and FIG. 3 is a perspective view of the light source unit viewed from the back side. 4 is a perspective view of the disassembled light source unit as viewed from the front side, and FIG. 5 is a perspective view of the disassembled light source unit as viewed from the back side.

  As shown in the figure, the camera device according to the embodiment of the present invention includes a main body unit 1 and a light source unit 2 using a plurality of white LEDs 20 as light sources. The main unit 1 accommodates devices such as a pyroelectric sensor 3 as a human body sensor, a camera 4, and a control circuit (not shown) for controlling the LED 20. Further, the main body unit 1 is formed with a recess 10 for holding the light source unit 2. Although the housing of the main unit 1 is made of resin, the housing of the light source unit 2 that houses the LED 20 that serves as a heating element is formed of a material having excellent heat dissipation, that is, metal (for example, aluminum). A decorative panel 5 is attached to the front of the pyroelectric sensor 3 and the camera 4 of the main unit 1.

  The light source unit 2 includes a front side member 21 in which an opening 21a for irradiating the light of the LED 20 to the front side is formed, a heat conductive sheet 22, a light guide plate 23 for guiding the light of the LED 20 toward the opening 21a, The LED 20 includes a substrate 24 disposed on the front side (the back side in FIG. 5), a waterproof packing 25, and a back side member 26 that forms a casing together with the front side member 21. The heat conductive sheet 22 is interposed between the LED 20 on the substrate 24 and the front side member 21, and conducts heat of the LED 20 to the front side member 21. The waterproof packing 25 seals the contact surface between the front side member 21 and the back side member 26.

  A plurality of fins 26 a are formed on the surface of the light source unit 2 on the main unit 1 side, that is, on the back member 26. The plurality of fins 26 a serve as a heat radiating plate of the light source unit 2 and form an air flow path between the light source unit 2 and the main unit 1. The light source unit 2 is held in a state where a predetermined gap 30 is maintained with respect to the recess 10 of the main unit 1.

  Further, a connector for passing a connector (not shown) for electrically connecting the LED 20 of the light source unit 2 and the control circuit in the main unit 1 to the surface of the light source unit 2 on the main unit 1 side. It has a mouth 27. On the other hand, the main unit 1 also has a connector mounting port 11 for passing a connector (not shown) connected to the connector on the light source unit 2 side on the surface on the light source unit 2 side. Further, a waterproof packing 12 is provided around the connection portion between the light source unit side connector and the main unit unit side connector, that is, in the connector attachment port 11.

  In the camera device having the above configuration, the heat of the LED 20 is transmitted from the LED 20 to the front side member 21 by the heat conductive sheet 22 interposed between the LED 20 and the front side member 21 of the light source unit 2, and heat is radiated from the surface of the front side member 21. Is done. The heat of the LED 20 is also radiated from the plurality of fins 26 a of the back side member 26 of the light source unit 2. At this time, heat is radiated from the plurality of fins 26a, whereby the air in the flow path formed by the plurality of fins 26a is warmed, and an upward airflow is generated. The updraft causes the wind to flow through the gap 30 between the light source unit 2 and the main unit 1. Thereby, the heat of the LED 20 is cooled by the wind flowing through the gap 30 between the light source unit 2 and the main unit 1 and is efficiently radiated, so that it is not transmitted to the main unit 1.

Therefore, in the camera device according to the present embodiment, the heat of the LED 20 is not transmitted to the pyroelectric sensor 3 and the control circuit in the main unit 1 and does not adversely affect them. Also,
Since the light source unit 2 is held so as to be embedded in the recess 10 formed in the main unit 1, the light source unit 2 can be downsized while maintaining a sense of unity, and has a high degree of design.

  In addition, since there is a gap 30 between the light source unit 2 and the main unit 1, rainwater or the like enters the gap 30, but at the connection portion between the light source unit 2 and the main unit 1. Since the waterproof packing 12 is provided around the connector on the light source unit side and the connector on the body unit side, intrusion of rainwater or the like into the light source unit 2 and the body unit 1 from these connection portions is prevented. Yes. Moreover, since the contact surface between the front side member 21 and the back side member 26 of the light source unit 2 is sealed with the waterproof packing 25, rainwater or the like does not enter the light source unit 2 from the contact surface.

  In the camera device according to the present embodiment, the light source unit 2 is made of metal having excellent heat dissipation and the body unit 1 is made of resin having low thermal conductivity. Further, it is difficult to be transmitted to the main unit 1 side. Note that the casing of the light source unit 2 may be molded by any method such as die casting, extrusion molding, or cutting.

  The camera device of the present invention is useful as a camera device for crime prevention such as a door phone or a surveillance camera. In particular, it is suitable as a camera device that realizes downsizing and advanced design by making it possible to efficiently dissipate heat from the light source.

The perspective view of the camera apparatus in embodiment of this invention The perspective view which shows the state which removed the light source unit and the decorative panel of the camera apparatus of FIG. Perspective view of the light source unit seen from the back side A perspective view of the disassembled light source unit as seen from the front side The perspective view which looked at the disassembled light source unit from the back side

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body unit 2 Light source unit 3 Pyroelectric sensor 4 Camera 5 Cosmetic panel 10 Recessed part 11 Connector attachment port 12 Waterproof packing 20 LED
21 Front side member 21a Opening 22 Thermal conductive sheet 23 Light guide plate 24 Substrate 25 Waterproof packing 26 Back side member 26a Fin 27 Connector mounting port 30 Gap

Claims (7)

A light source unit containing a light source, formed of a material with excellent heat dissipation,
A recess for holding the light source unit with a predetermined gap between the light source unit, a control circuit for controlling the light source housed in a housing, and a camera for photographing; Main body unit
The light source unit has a plurality of fins for forming an air flow path on a surface on the main unit side, and radiates heat by the air flowing through the gap. The camera device according to claim 1, wherein the light source unit is in an upper part in a vertical direction with respect to the camera of the main body unit. The light source unit has a light source unit side connector for electrically connecting the light source and the control circuit on the surface of the main unit.
The body unit has a body unit side connector connected to the light source unit side connector on the light source unit side surface,
The camera device according to claim 1, wherein a waterproof packing is provided around a connection portion between the light source unit side connector and the main body unit side connector. The light source unit includes a substrate on which the light source is arranged on the front side, a back side member on which the plurality of fins are formed, a front side member that forms the casing together with the back side member, a light source on the substrate, The camera device according to claim 1, further comprising: a heat conductive sheet interposed between the front side member and a waterproof packing that seals a contact surface between the front side member and the back side member. The camera device according to claim 1, wherein a housing of the light source unit is made of metal. The camera device according to claim 1, wherein a housing of the main unit is made of resin. The camera device according to claim 1, wherein the light source is a light emitting diode.

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