JP2017010693A - Lighting device and socket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device and a socket for further improving safety, since damages due to overheating are prevented when a type of the light bulb is erroneously attached.SOLUTION: Provided is a lighting device in which an illumination light source is detachably provided in a lighting device body. The lighting device main body comprises a socket for detachably holding the illumination light source, an output terminal section provided in the socket and configured to electrically connect power from an external power supply to the illumination light source, and a plurality of overcurrent protection elements connected in cascade to a high potential side or a low potential side in a circuit configuration from the external power supply to the output terminal section.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an illuminating device and a socket, and more particularly to an illuminating device and a socket provided in an illuminating device main body so that an illuminating light source can be attached and detached.

  2. Description of the Related Art Conventionally, illumination devices provided with a detachable illumination light source in the illumination device main body are becoming mainstream using light emitting elements as the illumination light source in accordance with recent energy savings.

  On the other hand, the types of lighting devices include a type using an incandescent bulb and a type using a light emitting element type bulb. There is a risk of accidentally mounting the type bulb.

  Therefore, by utilizing the fact that the maximum bulb diameter of the light-emitting element type bulb is smaller than the maximum bulb diameter of the incandescent bulb, center the radial direction so that the cap of the incandescent bulb cannot be inserted into the socket. There has been known an illumination device in which erroneous attachment preventing means including projecting portions projecting in the direction is arranged (see, for example, Patent Document 1).

  However, in such an illuminating device that prevents erroneous attachment of an incandescent bulb, for example, a silica having a maximum diameter of 55 mm is used even if the general cap size is an E26 type incandescent bulb. Although effective against light bulbs, for example, ball balls with a maximum diameter of 40 mm (http://www.denzaido.com/cm/260140/) and sign balls with a maximum diameter of 45 mm (http: //www.akaricenter .com / hakunetu / asahi / sign.htm), or because it cannot be used for incandescent bulbs called slim type with meandering or spiral tubes. There was a problem.

  Therefore, in order to prevent damage due to overheating when an incandescent light bulb is accidentally mounted, an electric circuit includes a single self-recovering type current interrupting element having a positive temperature coefficient that interrupts current when a predetermined temperature is exceeded. There is known a lighting device arranged in (see, for example, Patent Document 2).

JP 2013-143229 A JP 2013-229138 A

  However, even when the cap size is the same, further safety improvement is desired in consideration of the situation where a wide variety of incandescent bulbs exist.

  In order to solve the above-described problems, the present invention has an object to provide an illuminating device with improved safety in order to suppress damage due to overheating when the type of light bulb is erroneously mounted. To do.

  In order to achieve the above object, an illumination device according to the present invention is an illumination device in which an illumination light source is detachably provided on the illumination device body. The illumination device body includes a socket for detachably holding the illumination light source, and a socket. And an output terminal unit that provides electric power from the external power source to the illumination light source, and a plurality of circuits connected in cascade to the high potential side or the low potential side in the circuit configuration from the external power source to the output terminal unit. A current protection element.

  According to the present invention, since the damage due to overheating when the type of the light bulb is mistakenly attached is suppressed, the safety can be further improved.

It is a side view of the illuminating device which concerns on one embodiment of this invention. It is a longitudinal cross-sectional view of the socket applied to the illuminating device which concerns on one embodiment of this invention. It is a top view of the principal part of the state which removed the socket cover of the socket applied to the illuminating device which concerns on one embodiment of this invention. It is a schematic circuit diagram of the illuminating device which concerns on one embodiment of this invention.

<Overview>
An illumination device according to one embodiment of the present invention is an illumination device in which an illumination light source is detachably provided in the illumination device body, and the illumination device body is provided in a socket that detachably holds the illumination light source, and the socket. An output terminal unit for powering the electric power from the external power source to the illumination light source, and a plurality of overcurrent protection elements cascade-connected to the high potential side or the low potential side on the circuit configuration from the external power source to the output terminal unit. Is provided.

  In the lighting device according to another aspect, the plurality of overcurrent protection elements are a return type that self-resets when the characteristic value is equal to or lower than a predetermined characteristic value.

  In the lighting device according to another aspect, a plurality of overcurrent protection elements having at least high and low and two different characteristic values are used.

  In the lighting device according to another aspect, of the plurality of overcurrent protection elements, an overcurrent protection element having a low characteristic value is arranged on the external power supply side, and an overcurrent protection element having a high characteristic value is arranged on the illumination light source side .

  In the lighting device according to another aspect, the overcurrent protection element is a thermistor having a positive temperature coefficient that cuts off the current when a predetermined temperature is exceeded, and the characteristic value is the maximum rating of the overcurrent protection element. One or more of voltage (V), holding current value (A), trip current value (A), or a predetermined temperature against overheating of the overcurrent protection element itself is used as a reference.

  In the lighting device according to another embodiment, a plurality of overcurrent protection elements having the same characteristic value are used.

In a lighting device according to another aspect, a thermistor having a positive temperature coefficient that cuts off a current when a predetermined temperature is exceeded is used as the overcurrent protection element.
A socket according to another aspect includes a base that engages with a base of an illumination light source, a board that is disposed on the back side of the base, a plurality of overcurrent protection elements that are disposed on the board, and power from an external power source. A power source line that contacts the power source, a socket main body on which the cap and the substrate are mounted, and a socket cover that penetrates the power source line and holds the socket main body in a fitted state.

<Embodiment>
Next, a lighting device according to an embodiment of the present invention is applied to a pendant light type lighting device and will be described with reference to the drawings. The embodiments described below are preferred specific examples of the lighting device of the present invention, and may have various technically preferable limitations. However, the technical scope of the present invention particularly covers the present invention. As long as there is no description which limits, it is not limited to these aspects. In addition, the constituent elements in the embodiments described below can be appropriately replaced with existing constituent elements, and various variations including combinations with other existing constituent elements are possible. Therefore, the content of the invention described in the scope of claims is not limited by the description of the embodiment below.

  In FIG. 1, an illuminating device 1 suspends an illuminating device body 3 from which an illuminating light source 2 is detachably mounted, a illuminating device body 3 from a ceiling or the like (not shown), and supplies power from an external power source to the illuminating light source 2. A power line 4.

  The illumination light source 2 uses a light-emitting element type bulb mounted with one or more light-emitting elements (not shown). Note that, for example, a surface-emitting LED element is used as the light emitting element, and a plurality of types having different numbers and color tones can be arbitrarily selected according to the brightness desired by the user. In the illumination light source 2, for example, the LED element and the power circuit are covered with a colorless transparent or milky white cover on an E17 base or an E26 base.

  The illuminating device body 3 includes an umbrella portion 5 that diffuses and reflects part of the illumination light beam emitted from the illumination light source 2 downward, and a socket 6 that holds the umbrella portion 5 and holds the illumination light source 2.

  As shown in FIGS. 2 and 3, the socket 6 is disposed on the base 8, a base 8 that is engaged with a base (not shown) of the illumination light source 2, a base 8 that is disposed on the back side of the base 7, and the base 8. Two overcurrent protection elements 9, a power supply line 4 for supplying electric power from an external power source to the board 8, a socket body 10 on which the cap 7 and the board 8 are mounted, and a socket body that penetrates the power supply line A socket cover 11 that holds 10 in a fitted state, and a holder 12 that supports the umbrella portion 5 from below. The base 7 is composed of an output terminal 13 connected to the high potential side power input terminal 21 and a base part 14 connected to the low potential side power input terminal 22.

  The substrate 8 is connected to the substrate 8 at one end and the output terminal 13 having the other end facing the inside of the receptacle 7, the overcurrent protection element 9, and the high potential side power input terminal 21 to which the power supply line 4 is connected. And a low potential side power input terminal 22 are mounted.

  The socket main body 10 is an integrally molded product of resin made of flame retardant polycarbonate or the like, and holds the base 10a that supports the substrate 8, the lance-like engagement claws 10b that rise from the base 10a, and the mouthpiece 7 in the stored state. A cylindrical support portion 10c. Further, the outer periphery of the support portion 10c is formed with a spiral groove 10d that is screwed with the spiral protrusion 12a formed on the inner periphery of the holder 12, and the holder 12 can be displaced along the axial direction. To support.

  The socket cover 11 has a dome shape made of a resin such as flame retardant polycarbonate, and covers the base 10a while being engaged with the socket body 10 by being engaged with the engaging claws 10b. A top hole of the socket cover 11 is provided with a through hole 11 a for penetrating the power supply line 4 and connecting to the high potential side power input end 21 and the low potential side power input end 22 of the substrate 8. The socket body 10 and the socket cover 11 are engaged by the engaging claws 10 b to form the socket 6.

  Next, based on FIG. 4, the circuit structure of the illuminating device 1 is demonstrated. The external power source AC is supplied with power from the power line 4 to the socket 6. The socket 6 includes a substrate 8 provided with a high potential side power input end 21, a low potential side power input end 22, an overcurrent protection element 9 for connecting the power supply line 4 for supplying power, an output terminal 13 of the cap 7, A mouthpiece 14 is provided. In addition, illustration and description of the power supply circuit of the illumination light source 2 can be omitted here because known techniques can be applied.

  The plurality of overcurrent protection elements 9 are cascade-connected to the high potential side (or low potential side) in the circuit configuration from the external power supply AC to the output terminal 13. The plurality of overcurrent protection elements 9 are a return type that self-recovers when they become below a predetermined characteristic value, and have a positive temperature coefficient that cuts off current (prevents by increasing resistance) when a predetermined temperature is exceeded. A thermistor (poly switch) is used.

  Next, an application example of the plurality of overcurrent protection elements 9 will be described. In the present embodiment, a plurality of overcurrent protection elements 9 having different characteristic values are used.

  Here, the characteristic value indicates a maximum rated voltage (V) at the time of manufacture, a holding current value (A), a trip current value (A), or a predetermined temperature with respect to overheating of the overcurrent protection element 9 itself. In addition, different types of overcurrent protection elements 9 are intentionally used so that two different characteristic values are intentionally at least high and low.

  For example, in the present embodiment, different types are used so that at least one characteristic value (for example, a predetermined temperature) is high or low in the standard. At this time, among the plurality of overcurrent protection elements 9, the overcurrent protection element 9 having a low characteristic value may be arranged on the external power supply AC side, and the overcurrent protection element 9 having a high characteristic value may be arranged on the illumination light source 2 side. desirable.

  As a result, the overcurrent protection element 9 senses the current value when the illumination light source 2 is mounted on the cap 7 depending on whether the illumination light source 2 is a light emitting element type bulb or an incandescent type bulb, and thereby the incandescent type bulb. In this case, current can be prevented from flowing.

  On the other hand, a plurality of overcurrent protection elements 9 having the same characteristic values according to the standard may be used. In addition, on the standard here, the maximum rated voltage (V), the holding current value (A), the trip current value (A) at the time of manufacture, or a predetermined temperature against overheating of the overcurrent protection element 9 itself are set. It means that the value is the same characteristic value.

  With such a configuration, when some trouble occurs in the plurality of overcurrent protection elements 9, it is possible to ensure the safety to operate even with one threshold value, and the illumination light source 2 is a light emitting element type. In the case of an incandescent light bulb and in the case of an incandescent light bulb, it is possible to sense the current value when it is attached to the cap 7 and to prevent current from flowing in the case of an incandescent light bulb.

  By the way, the illuminating device 1 of this invention is implemented by adding various changes within the range which does not deviate from the meaning.

  For example, the manufacturing environment of temperature / humidity, gravity, electric power, and the like of the overcurrent protection element 9 is greatly different when the manufacturing company and the manufacturing factory are located in different countries. For this reason, the standard characteristic values such as the maximum rated voltage (V), the holding current value (A), the trip current value (A), or the predetermined temperature against overheating of the overcurrent protection element 9 itself are the same. However, there may be some differences including manufacturing errors.

  Therefore, even if the characteristic values in the standard are the same, the actual characteristic values including such an error at the time of manufacture have a difference in height, so that different kinds of characteristic values may not be used. As a result, a plurality of overcurrent protection elements 9 having strictly different characteristic values while using substantially the same characteristic values are used.

  For this reason, in addition to ensuring safety with respect to one threshold value when a plurality of overcurrent protection elements 9 having the same characteristic values in the above-described standard are used, a plurality of overcurrent protection elements 9 having different characteristic values are used. The safety | security with respect to several threshold value when using is ensured.

  As a result, the overcurrent protection element 9 senses the current value when the illumination light source 2 is mounted on the cap 7 depending on whether the illumination light source 2 is a light emitting element type bulb or an incandescent type bulb, and thereby the incandescent type bulb. In this case, current can be prevented from flowing.

  In addition, the reset-type overcurrent protection element 9 can suppress malfunction due to a surge or the like because the reaction is not instantaneous, and further increases the certainty and safety with respect to a threshold corresponding to one overheat temperature. Can be improved.

  In addition, by using a plurality of overcurrent protection elements 9 with different types, for example, domestic and overseas, it is possible to cope with product variations and reliability.

  For example, in the above embodiment, the lighting device 1 of the present invention applied to the pendant light type is disclosed, but for example, a downlight type, an upright type, a spotlight type, etc. can be applied to the lighting device of the present invention. It is.

  In the above-described embodiment, two overcurrent protection elements 9 are arranged in series on the high potential side. However, three or more may be used, and the overcurrent protection elements 9 may be distributed between the high potential side and the low potential side. May be arranged.

  As described above, since the lighting device 1 according to the present invention suppresses damage due to overheating when the type of bulb is installed incorrectly, it has the effect of improving safety and the illumination light source can be attached and detached. It is useful for all lighting devices provided in the lighting device body.

DESCRIPTION OF SYMBOLS 1 Illumination device 2 Illumination light source 4 Power supply line 6 Socket 9 Overcurrent protection element 13 Output terminal part

Claims (8)

An illumination device in which the illumination light source is detachably provided on the illumination device body,
The lighting device body includes:
A socket for detachably holding the illumination light source;
An output terminal portion provided in the socket, for powering an electric power from an external power source to the illumination light source;
A plurality of overcurrent protection elements cascade-connected to the high potential side or the low potential side on the circuit configuration from the external power source to the output terminal unit;
A lighting device comprising: The plurality of overcurrent protection elements are:
The lighting device according to claim 1, wherein the lighting device is a return type that self-resets when it becomes a predetermined characteristic value or less. In the plurality of overcurrent protection elements,
The lighting device according to claim 1, wherein the lighting device has at least two different characteristic values. Among the plurality of overcurrent protection elements,
The overcurrent protection element having a low characteristic value is arranged on the external power supply side,
The lighting device according to claim 3, wherein the overcurrent protection element having a high characteristic value is arranged on the illumination light source side. The overcurrent protection element uses a thermistor having a positive temperature coefficient that cuts off the current when a predetermined temperature is exceeded,
The level of the characteristic value is
Based on one or more of the maximum rated voltage (V), holding current value (A), trip current value (A) of the overcurrent protection element, or the predetermined temperature against overheating of the overcurrent protection element itself. The lighting device according to claim 4, wherein: In the plurality of overcurrent protection elements,
What has the same characteristic value is used. The illuminating device of Claim 1 or Claim 2 characterized by the above-mentioned. The lighting device according to claim 6, wherein the overcurrent protection element is a thermistor having a positive temperature coefficient that cuts off a current when a predetermined temperature is exceeded. A base that engages the base of the illumination light source;
A substrate disposed on the back side of the receptacle,
A plurality of overcurrent protection elements disposed on the substrate;
A power line for powering an electric power from an external power source to the board;
A socket body on which the mouthpiece and the substrate are mounted;
A socket cover for penetrating the power line and holding the socket body in a fitted state;
A socket characterized by comprising:

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